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Radix Electrosystems Private Limited


Dwyer Pressure Products

Radix is pleased to announce its appointment as Dwyer’s Channel Partner for the whole of India. Dwyer is known globally as one of the leading players in Instrumentation products in Pressure, Flow, Air Quality and other fields. “Magnehelic”, for example, is synonymous with Differential Pressure measurements for HVAC.


Radix has an all-India sales and service network to source all your Dwyer requirements and provide application support.

The full range of 3000 Dwyer products is now available from Radix.

Digihelic Differential Pressure Controller

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Digihelic Differential Pressure Controller
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Product Details:
Output Signal 4-20 mA
Response Time250 ms
Current1 A, 2 A
Pole Type Single Pole
Throw Type Single Throw
Control TypeHigh Limit

3-in-1 Instrument: Gage, Switch & Transmitter, Square Root Extractor for Air Flow

A 3-in-1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output.

Combining these three features allows the reduction of several instruments with one product, saving inventory, installation time & money.

The Digihelic® Controller is the ideal instrument for velocity, pressure and flow applications, achieving a 0.5% full scale accuracy on ranges from 5 to 100 in w.c.

The Digihelic® Controller allows the selection of pressure, velocity or volumetric flow operation in several commonly used engineering units.

Two SPDT control relays with adjustable deadbands are provided along with a scalable 4-20 mA process output.

The Series DH provides extreme flexibility in power usage by allowing 120/220 VAC and also 24 VDC power which is often used in control panels.

Features:
  • Service: Air and non-combustible, compatible gases
  • Wetted Materials: Consult factory
  • Housing Material: ABS plastic, UL approved 94-V-0
  • Accuracy: ±0.5% at 77°F (25°C) including hysteresis and repeatability
  • Stability: < ±1% per year
  • Pressure Limits: Ranges ≤ 2.5 in w.c. = 2 psi; 5: 5 psi; 10: 5 psi; 25: 5 psi; 50: 5 psi, 100: 9 psi
  • Temperature Limits: 32 to 140°F (0 to 60°C)
  • Compensated Temperature Limits: 32 to 140°F (0 to 60°C)
  • Thermal Effects: 0.020%/°F (0.036/°C) from 77°F (25°C)
  • Power Requirements: High voltage power = 100 to 240 VAC, 50 to 400 Hz or 132 to 240 VDC. Low voltage power= 24 VDC ±20%
  • Power Consumption: Low voltage power = 24 VDC - 130 mA max; High voltage power = 100 to 240 VAC, 132 to 240 VDC - 7VA max
  • Output Signal: 4-20 mA DC into 900 Ωmax
  • Zero & Span Adjustments: Accessible via menus
  • Response Time:250 ms
  • Display: 4 digit LCD 0.4 height. LED indicators for set point & alarm status


Additional Information:

  • Item Code: SeriesDH
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Process Gauge with Dampened Movement

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Process Gauge with Dampened Movement
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Product Details:
Minimum Order Quantity1 Piece
Wetted Materials316L SS
Weight37 oz
Material gradeSS316L
MaterialStainless Steel

We are leading Manufacturer of Process Gauge with Dampened Movement and our product is made up of good quality.

±0.5% Accuracy, Safety Blow-Out Back

The Series 765 Process Gage with Dampened Movement minimizes effects of vibration without liquid filling. With this dampened movement the 765 gages are ideal for use in any application where high pulsation or vibration exists. The 765 gages offer dual scale range (psi/kPa) with ±0.5% full-scale accuracy. They are designed with a Phenolic safety-case and have a solid front with a blow-out back. Excellent chemical compatibility is insured with the 316L SS socket and Bourdon tube. A wide offering of ranges are available from full vacuum to 20,000 psi. The 765 process gage comes standard with bottom 1/4 or 1/2 male NPT connections.

SPECIFICATIONS
  • Service: Compatible gases & liquids
  • Wetted Materials: 316L SS socket and Bourdon tube
  • Housing: Phenolic plastic with safety blow-out back
  • Lens: Polycarbonate
  • Accuracy: ±0.5% ANSI/ASME Grade 2A
  • Pressure Limit: 125% FS < 1500 psi, 115% FS for 2000 to 5000 psi,110% FS >10,000 psi
  • Temperature Limits: -40 to 200°F (-40 to 93°C)
  • Size: 4-1/2 (114.3 mm) dial face
  • Process Connections:1/4 or 1/2 NPT male
  • Enclosure Rating: IP65 (NEMA 4)
  • Weight: 37 oz (1040 g)
  • Agency Approval: RoHS


Additional Information:

  • Item Code: Series765
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Magnehelic Pressure Gauge

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Magnehelic Pressure Gauge
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Select the SERIES 2000 Magnehelic Pressure Gauge for much higher accuracy--guaranteed within 2% of full scale--and for the wide choice of 81 models available to suit your needs precisely. Using Dwyer's frictionless Magnehelic®, simple, gage movement, it quickly indicates non-corrosive gas pressures or low air --either negative (vacuum), positive or differential. The design resists vibration, shock, and over-pressures.

Important Features Dwyer Magnehelic Pressure Gauge:
  • Service: Air and non-combustible, compatible gases.
  • Wetted Materials: Consult factory.
  • Magnehelic® Housing: Die cast aluminum case & bezel with acrylic cover; Exterior finish is coated gray to withstand 168 hour salt spray corrosion test.
  • Housing Material: Aluminum.
  • Finishing: Texture epoxy coat RAL7038.
  • Pressure Limits: -20 in Hg to 15 psig (-0.677 bar to 1.034 bar); MP option; 35 psig (2.41 bar), HP option; 80 psig (5.52 bar)
  • Overpressure: Relief plug opens at approximately 25 psig (1.72 bar), standard gages only. See overpressure protection note on Magnehelic® Gage catalog page
  • Temperature Limits: 20 to 140°F (-6.67 to 60°C); Low temperature option: -20°F (-28.8°C);
  • Case: -58 to 140°F (-50 to 60°C) (Note: Product temperature limits are less than case limits)
  • Mounting Orientation: Diaphragm in vertical position.
  • Accuracy: ±2% of FS (±3% on -0, -100 Pa, -125 Pa, -10 mm and ±4% on -00, -60 Pa, -6 mm ranges), throughout range at 70°F (21.1°C).
  • Enclosure Rating: IP66. IP65 with option OPV, overpressure relief valve
  • Process Connections: 1/8 NPT female brass (SS optional). In presence of acetylene it is necessary to use SS.
  • Weight: 8.6 lb (3.9 kg).
  • ATEX Approved Product from Comhas with ECN: NEMKO 10ATEX1096.
  • Agency Approvals: CE 0470 II2 GD Ex d IIC Gb T6; -50°C ≤ Ta ≤ +60°C Ex tb IIIC Db T 85°C


Additional Information:

  • Item Code: Series2000-SP
  • Minimum Order Quantity: 1 Piece
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Magnehelic Differential Pressure Gauges

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  • Service : Air & non-combustible, compatible gases (natural gas option available). Order a Buna-N diaphragm. Pressures must be less than 35 psi
  • Wetted Materials: Consult factor
  • Housing: Die cast aluminum case & bezel, with acrylic cover. Exterior finish is coated gray to withstand 168 hour salt spray corrosion test
  • Accuracy: ±2% of FS (±3% on - 0, -100 Pa, -125 Pa, 10MM and ±4% on - 00, -60 Pa, -6MM ranges), throughout range at 70°F (21.1°C
  • Pressure Limits: -20 in Hg to 15 psig† (-0.677 to 1.034 bar); MP option: 35 psig (2.41 bar); HP option: 80 psig (5.52 bar).
  • Overpressure: Relief plug opens at approximately 25 psig (1.72 bar), standard gages only. See Overpressure Protection Note on next page
  • Temperature Limits: 20 to 140°F* (-6.67 to 60°C). -20°F (-28°C) with low temperature option
  • Size: 4 (101.6 mm) diameter dial face
  • Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations Standard Accessories: Two 1/8 NPT plugs for duplicate pressure taps, two 1/8 pipe thread to rubber tubing adapter, and three flush mounting adapters with screws. (Mounting and snap ring retainer substituted for three adapters in MP & HP gage accessories.)


Additional Information:

  • Item Code: Series2000
  • Minimum Order Quantity: 1 Piece(s)
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Minihelic Differential Pressure Gauges

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Product Details:
Minimum Order Quantity1 Piece
Wetted PartsSS 304, SS 316
Weight6 Oz
Temperature Limits20 To 120 Degree Farhenheit

We are leading Manufaturer of Minihelic Differential Pressure Gauges and our product is made up of good quality.

Features:
  • Service: Air and compatible gases.
  • Wetted Materials: Consult factory.
  • Housing: Glass filled nylon;acrylic lens.
  • Accuracy: ±5% of FS at 70°F (21.1°C).
  • Pressure Limits: 30 psig (2.067 bar) continuous to either pressure connection.
  • Temperature Limits: 20 to 120°F (-6.67 to 48.9°C).
  • Size: 2-1/16 (52.39 mm) diameter dial face.
  • Mounting Orientation:Diaphragm in vertical position.Consult factory for other position orientations.
  • Process Connections: Barbed, for 3/16 ID tubing (standard); 1/8 male NPT (optional).
  • Weight: 6 oz (170.1 g).
  • Agency Approvals: RoHS


Additional Information:

  • Item Code: MDPG
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Digital Differential Pressure and Flow Gauges

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Digital Differential Pressure and Flow Gauges
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Features:
  • Service: Air & non-combustible, compatible gases.
  • Wetted Materials: Consult factory.
  • Housing Materials: Glass filled plastic.
  • Accuracy: ±1% FS including linearity, hysteresis and repeatability; ±2% FS for ranges 1 in w.c. and below.
  • Temperature Limits: 0 to 140°F (-18 to 60°C).
  • Compensated Temperature Limits: 32 to 122°F (0 to 50°C).
  • Long Term Stability: ±1% FS per year.
  • Thermal Effect: ±0.05% FS/°F typ.; ±0.10% FS/°F for ranges 1 in w.c. and below.
  • Display: 4-digit LCD(digits:0.60H x 0.33W).
  • Display Update: Selectable for 1 second to 10 minutes or update only from button push.
  • Pressure Limits: Normal and bi-directional ranges 5 in w.c. and lower = 2 psi (13.7 kPa); Normal and bi-directional ranges 10 in w.c. and higher = 11 psi (75 KPa).
  • Selectable Engineering Units: in w.c., psi, kPa, Pa, mm w.c., mBar, in Hg, mm Hg, FS(0-100%).
  • Power Requirements: 9 V alkaline battery, included, user replaceable or external power supply 9-24 VDC.
  • Battery Service Life: Battery life depending on the display update setting:150 hours (typical) if display update=1 second; 9 month (typical) if display update = 10 minutes; 1.5 years (typical) if display update is disabled. Battery may last up to four times longer when using lithium-based battery ULTRALIFE U9VL-J.
  • Current Consumption: 5 mA max.
  • Electrical Connections: Removable terminal block for 16 to 26 AWG.
  • Electrical Entry: Cable gland for 0.114 to 0.250 (2.9 to 6.4 mm)diameter cable.
  • Process Connections:1/8 (3 mm) ID tubing.
  • Enclosure Rating: NEMA 4X (IP66).
  • Weight: 1.18 lb(535 g).
  • Size: 5 (127 mm) OD front face.
  • Agency Approvals:CE.


Additional Information:

  • Item Code: DPF
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Molded Plastic Manometers

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Molded Plastic Manometers
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Dwyer® Mark II series molded manometers are of the inclined and inclined-vertical types. The curved inclined-vertical tube of the Model 25 gage provides higher ranges with more easily read increments at low readings. The Model 25 is excellent for general purpose work. The Model 40 inclined gage provides linear calibration & excellent resolution throughoutits range. The Model 40 is ideally suited for air velocity & air filter gage applications. Both gage types are capable of pressure measurements above & below atmospheric as well as differential pressure measurements.

Features
  • Inclined/vertical
  • Accuracy: ±3% FS
  • Temperature Limits: 140°F (60°C).
  • Pressure-Limits:10 psi (70 kPa).
  • Weight:1.04lb (472 g).


Additional Information:

  • Item Code: MPM
  • Minimum Order Quantity: 1 Piece(s)
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Inclined Vertical Manometers

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Inclined Vertical Manometers
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Product Details:
Minimum Order Quantity1 Piece
Accurate +/- 1%
Column2
ColorWhite

We are leading Manufacturer of Inclined Vertical Manometers and our product is made up of good quality.

Dwyer inclined-vertical manometers are extremely accurate instruments designed & made especially for precision measurement of low differential pressures in laboratory and test applications.

The inclined range bore has a length of 20 to provide ample multiplication of indicating fluid movement in this critical lower part of the range.

Features
  • Double column manometer.
  • Total range of 0 to 10 of water
  • Single column models are also furnished
  • Accurate to ±1%
  • Suited for use with pitot tubes & in flow measurement or similar applications.


Additional Information:

  • Item Code: Series424
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Flex Tube Well Type Manometers

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Flex Tube Well Type Manometers
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Dwyer® Flex-Tube® Well Type Manometers are designed to meet the need for a direct reading single column instrument providing.Highly accurate pressure readings; negative, positive or differential. Unlike other makes, Dwyer® manometers have no hidden wells or packing glands. These instruments are constructed of shatterproof clear plastic tubing permanently bonded to well assemblies with leakproof glued joints. Well assemblies are precisely machined from solid acrylic plastic. Overpressure safety traps assure protection against loss of fluid. Heavy pure white acrylic plastic scales have sharp black silk screened figures & graduations sealed with clear mylar coating. Heavy heat treated aluminum back plates have durable gray hammerloid finish. These manometers are rated to 100 psig (6.89 bar). Not recommended for vacuum service beyond 5 in. Hg (68 in w.c.).

Features:
  • Highly accurate pressure readings; positive, negative or differential
  • No hidden wells or packing glands
  • Constructed of shatterproof clear plastic tubing permanently bonded to well assemblies
  • Leakproof glued joints
  • Machined from solid acrylic plastic
  • Overpressure safety traps assure protection against loss of fluid


Additional Information:

  • Item Code: Series1230
  • Minimum Order Quantity: 1 Piece(s)
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Photohelic Pressure Switch

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Photohelic Pressure Switch
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Photohelic® Pressure Switch/Gages: 3-in-1 Indicating Gage, Lo-Limit and Hi-Limit Control
Photohelic® Switch/Gages function as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time-proven Magnehelic® gage design. The Photohelic® gage measures and controls positive,negative or differential pressures of air and compatible gases. Standard models are rated to 25 psig (1.7 bar) with options to 35 (2.4) or 80 (5.5 bar) psig. Single pressure 36000S models measure to 6000 psig (413 bar) with a 9000 psig (620 bar) rating.
FeaturesGAUGE SPECIFICATIONS
  • Service: Non-combustible gases, Air &, compatible gases
  • Wetted Materials: Consult factory
  • Accuracy: ±2% of FS at 70°F (21.1°C). ±3% on -0 and ±4% on -00 models
  • Pressure Limits: -20 Hg. to 25 psig (-0.677 to 1.72 bar). MP option; 35 psig(2.41 bar), HP option; 80 psig (5.52 bar). A36003S – 36010S; 150 psig (10.34bar). A36020S and higher; 1.2 x full-scale pressure
  • Temperature Limits: 20 to 120°F (-6.67 to 48.9°C). Low temperature option available
  • Process Connections: 1/8 female NPT
  • Size: 4 (101.6 mm) dial face, 5 (127 mm) OD x 8-1/4 (209.55 mm)
  • Weight: 4 lb (1.81 kg)

SWITCH SPECIFICATIONS
  • Switch Type: Each setpoint has 2 form C relays (DPDT)
  • Repeatability: ±1% of FS
  • Electrical Rating: 10A @ 28 VDC, 10A @ 120, 240 VAC
  • Electrical Connections: Screw terminals. Use 167°F (75°C) copper conductors only
  • Power Requirements: 120 VAC, 50/60 Hz; 240 VAC & 24 VAC power optional
  • Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations
  • Set Point Adjustment: Adjustable knobs on face
  • Agency Approvals: CE, CSA, UL. Optional-EXPL explosion-proof enclosure does not possess any agency approvals.


Additional Information:

  • Item Code: SeriesA3000
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Photohelic Switch Gauges

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Product Details:
Wetted PartsSS 304, SS 316
Housing materialAluminum
Dial Size101.6 MM

Photohelic Switch/Gauges-with 120, 240 or 24 VAC Power

Flame-proof ATEX approved Photohelic® Switch/Gages, Series AT3A3000, function as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time-proven Magnehelic® gage design.

The Photohelic® switch/gage measures and controls positive, negative or differential pressures of air and compatible gases.

Features:
  • Service: Air and non-combustible, compatible gases.
  • Brass case option required for water based liquids.
  • Wetted Materials: Consult factory
  • Housing material: Aluminum
  • Finishing: Texture epoxy coat RAL7038
  • Accuracy: ±2% of FS at 70°F (21.1°C); ±3% on -0 and ±4% on -00 models
  • Pressure Limits: -20 in Hg to 25 psig (-0.677 to 1.72 bar). MP option; 35 psig (2.41 bar), HP option; 80 psig (5.52 bar)
  • Temperature Limits: 20 to 120°F (-6.67 to 48.9°C) LT low temperature option to -20°F available; Case: -58 to 140°F (-50 to 60°C) (Note: Product temperature limits differ from case)
  • Dial Size: 4 (101.6 mm)
  • Mounting Orientation: Diaphragm in vertical position.
  • Set Point Adjustment: Adjustable knobs on Photohelic® gage face behind enclosure cover.Follow instructions and safety warnings to open cover

SWITCH SPECIFICATIONS
  • Switch Type: Each setpoint has 2 Form C relays (DPDT)
  • Repeatability: ±1% of FS
  • Electrical Rating: 10 A @ 28 VDC, 10A @ 120, 240 VAC
  • Electrical Wiring: Screw terminals
  • Power Requirements: 120 VAC, 50/60 Hz; 240 VAC & 24 VAC power optional
  • Enclosure Rating: IP66. IP65 with option OPV, overpressure relief valve
  • Process Connections: 1/8 NPT female brass (SS optional). In presence of acetylene it is necessary to use SS
  • Electrical Connections: Three 1/2 NPT female.Cable gland not included.
  • Weight: 28.4 lb (12.9 kg).
  • ATEXApproved Products from Comhas with ECN: NEMKO 10ATEX1096.
  • Agency Approvals: CE 0470 II2 GD Ex d IIC Gb T6; -50°C ≤ Ta ≤ +60°C Ex tb IIIC Db T 85°C.
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Capsu Photohelic Pressure Gauges

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Capsu-Photohelic® Pressure Switch/Gages-Lo-Limit and Hi-Limit Control, Aluminum or Brass Case Available

Capsu-Photohelic® Switch/Gages function as versatile, highly repeatable pressure switches combined with a precise pressure gauge employing the time proved Magnehelic gauge design. The Capsu-Photohelic® gage employs an encapsulated sensing element for use with both liquids and gases at pressures to 500 psig (34 bar).Optional cast brass case is available for water or water based liquids.

Features:
GAUGE SPECIFICATIONS
  • Service: Compatible liquids and gases. 
  • Brass case option required for water based liquids.
  • Wetted Materials: Consult factory.
  • Accuracy: ±3% of FS at 70°F (21.1°C). ±4% on 43215, 43220 and 43500.
  • Pressure Limits: -20 Hg to 500 psig (-0.677 to 34.5 bar).
  • Temperature Limits: 20 to 120°F (-6.67 to 48.9°C). Low temperature option available.
  • Process Connections: 1/4 female NPT.
  • Size: 4 (101.6 mm) dial face, 5 (127 mm) OD x 9-3/16 (233.36mm).
  • Weight: 5 lb, 8 oz (2.49 kg).
  • Brass 11 lb, 2 oz (5.05 kg).

SWITCH SPECIFICATIONS
  • Switch Type: Each setpoint has 2 form C relays (DPDT).
  • Repeatability: ±1% of FS.
  • Electrical Rating: 10A @ 120 VAC, 6A @ 240 VAC, 60 Hz res. 10A @ 28 VDC.
  • Electrical Connections: Screw terminals.
  • Power Requirements: 120 VAC, 50/60 Hz; 240 VAC & 24 VAC power optional.
  • Mounting Orientation: Diaphragm in vertical position.
  • Consult factory for other position orientations.
  • Set Point Adjustment: Adjustable knobs on face.
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Photohelic Switch Gauges

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Product Details:
Wetted PartsSS 316, SS 304
Pressure Limit-20 Hg. to 25 psig
Weight816 g

Photohelic® Switch/Gauges: Combines Differential Pressure Gage with Low/High Set-points

Using solid state technology, the Series 3000MR and 3000MRS Photohelic® switch/gages combine the functions of a precise, highly repeatable differential pressure switch with a large easy-to-read analog pressure gage employing the durable, time-proven Magnehelic® gage design.

Switch setting is easy to adjust with large external knobs on the gage face.

Gage reading is unaffected by switch operation — will indicate accurately even if power is interrupted. Solid state design now results in greatly reduced size and weight.

Features:
  • Service: Air and non-combustible,compatible gases
  • Wetted Materials: Consult factory
  • Accuracy: ±2% of FS (3000-0 ±3% of FS). (3000-00 ±4% of FS)
  • Pressure Limit: -20 Hg. to 25 psig (-0.677 bar to 1.72 bar). MP option
  • 35 psig (2.41 bar), HP option; 80 psig (5.52 bar)
  • Temperature Limits: 20 to 120°F (-6.67 to 48.9°C)
  • Process Connections: 1/8 female NPT (duplicated side and back)
  • Size: 4 (101.6 mm) dial face, 5 (127 mm) OD x 3-1/8 (79.38 mm)
  • Weight: 1.8 Ib (816 g)
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Compact Economic Differential Pressure Switch

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Low Pressures down to 0.07 in w.c.

The Series PDPS’s large diameter diaphragm and snap action switch make it dependable and ideal for OEM applications. The Series PDPS Pressure Switches are available for pressure, vacuum, and differential applications and are factory preset for pressures from 0.07 of w.c. to 1.0 of w.c. with full-scale repeatability of ±0.02 of w.c. Other features of the PDPS pressure switch include standard multi-barb port connections, inherent mounting and quick disconnect terminals, which make the Series PDPS perfect for many OEM applications.

SPECIFICATIONS
  • Service: Air and compatible gases
  • Wetted Materials: Polyphenylene oxide-styrene housing, fluorosilicone diaphragm, stainless steel spring
  • Temperature Limits: -40 to 185°F (-40 to 85°C)
  • Operating Pressure: 0.07 in w.c. to 1.0 in w.c
  • Repeatability: ±0.02 of w.c
  • Burst Pressure: 3.5 psi (0.241 bar)
  • Proof Pressure: 1.0 psi (0.069 bar)
  • Switch Type: Conventional snap action switch
  • Electrical Rating: 5 A @ 125/250VAC
  • Process Connections: Multi-barb port connections for 1/4 and 3/8 ID tubing
  • Mounting Orientation: Mount switch with diaphragm in a vertical position unless customer has specified otherwise
  • Set Point Adjustment: Set point adjusted at factory
  • Weight: 2.7 oz (76.5 g)


Additional Information:

  • Item Code: SeriesPDPS
  • Minimum Order Quantity: 1 Piece(s)
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Bypass Damper Switch

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Controls Zone Static by Modulating Motorized Damper

The Series BYDS Bypass Damper Switch is designed to control motorized bypass dampers. As individual zone dampers open and close, the system static pressure will rise and fall. In order to maintain proper airflow and static pressure through the HVAC system, a bypass system incorporating a floating type motorized damper and a static pressure control should be incorporated. A typical on/off pressure switch cannot operate in this application due to the high cycle rate that would result, eventually causing contact burn-out. The BYDS static pressure control is equipped with a solid-state switching and timing circuit to enhance operation and improve long-term reliability in this demanding application.

SPECIFICATIONS
  • Service: Air and non-combustible, compatible gases
  • Materials: Diaphragm material:Silicone;Housing material: Switch body: PA 6.6 and POM; Cover:Polystyrene
  • Temperature Limits: Process and ambient temperature from 32 to 122°F(0 to 50°C)
  • Pressure Limits: Max. operating pressure:40 in w.c. (10 kPa) for all pressure ranges
  • Switch Type: SPDT
  • Electrical Rating: 1A @ 24 VAC
  • Electrical Connections:Screw terminal block. M20 x 1.5 with cable strain relief or 1/2 NPTconnection
  • Process Connections: 5/16 (7.94 mm)outside diameter tubing, 1/4 (6.0 mm) inside diameter tubing
  • Enclosure Rating:NEMA13 (IP54)
  • Mounting Orientation:Vertically, with pressure connections pointing downwards
  • Mechanical Working Life:Over 106 switching operations
  • Weight: 5.6 oz (160 g)
  • Agency Approvals: CE, RoHS


Additional Information:

  • Item Code: SeriesBYDS
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Adjustable Differential Pressure Alarm Switch

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24 Volt or Battery Powered, Built-in Audible and Visual Alarm

The Series BDPA Adjustable Differential Pressure Alarm with built-in audible and visual set point indication is designed for overpressure, vacuum, and differential pressure applications. The scaled adjustment knob allows changes to the switching pressure to be made without a pressure gage. The BDPA is available with settings from 0.08 in w.c. (20 Pa) to 20 in w.c. (5000 Pa). The silicone diaphragm and PA 6.6 body make the Series BDPA perfect for use with air and other noncombustible gases.

SPECIFICATIONS
    Service: Air and noncombustible, compatible gases
  • Wetted Materials: Diaphragm material: Silicone; Housing material, switch body: PA 6.6 and POM; Cover: Polystyrene
  • Temperature Limits: 32 to 122°F (0 to 50°C)
  • Pressure Limits: 40 in w.c. (10 kPa)
  • Electrical Rating:1.0 amp @ 30 VDC/VAC
  • Switch Type: SPDT
  • Alarm Indication: Red LED and audible alarm
  • Alarm Level:Approximately 90 db at 4 (10 cm)
  • Alarm Acknowledge: Button press
  • Power Requirements: 16 to 30 VDC, 18 to 30 VAC or 3.6 V LS14250 lithium metal battery, installed functional, user replaceable. Battery acts as back-up if power is lost
  • Battery Life: Approximately 1.5 years with 3.6 V/1.2 Ah
  • Repeatability: ±15% FS
  • Electrical Connections: Screw terminals. M20x1.5 with cable strain relief or optional 1/2 NPT connection
  • Process Connections: 5/16 (7.94 mm) outside diameter tubing, 1/4 (6.0 mm) inside diameter tubing
  • Enclosure Rating: IP21
  • Mounting Orientation: Vertically, with pressure connections pointing downwards
  • Weight: 6.1 oz (173 g)
  • Agency Approvals: CE, RoHS


Additional Information:

  • Item Code: SeriesBDPA
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Miniature Adjustable Pressure Switch

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Adjustable Set Points from 0.1 to 100 in w.c

Sense differential pressure with the Series MDA Miniature Adjustable Pressure Switch. The switch features field adjustable set point and gold inlay contacts. Air or other compatible fluids can be used on the “high side”. The lightweight and compact size make the MDA ideal for any application with space constraints.Applications include industrial, HVAC, pump and motor control, medical, automotive, pools and spas.
SPECIFICATIONS
  • Switch Type: SPST normally open
  • Switching Media: Air or compatible fluids on “high side”
  • Pressure Limits: MDA-011: 8 psi; MDA-111: 8 psi; MDA-211: 8 psi;MDA-311: 15 psi. MDA-411: 25 psi
  • Current Rating: 40 mA resistive for life in excess of 20 million cycles
  • Temperature Limits: 40 to 150°F (4 to 66°C)
  • Contacts: 18K gold inlay
  • Electrical Connections: Terminals - 0.187 x 0.20: spade (recessed) for use with quick disconnects
  • Pressure Connections: Smooth port 5/32 diameter for 1/8 ID tubing
  • Housing: Polycarbonate
  • Diaphragm Material: Polyurethane
  • Operating Voltage:AC/DC - 30V or less with resistive load
  • Mounting: Use #4 screws through mounting lugs or #2 screws through eyelets
  • Weight: Less than 0.353 oz (10 g)
  • Agency Approval:cUL, UL


Additional Information:

  • Item Code: SeriesMDA
  • Minimum Order Quantity: 1 Piece
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Floating Contact Null Switch

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Product Details:
Minimum Order Quantity1 Piece
BrandRadix
ModelModel 1640

Visual Set Point Adjustment...Adjustable Null Zone
The unique electric switch design in the 1640 is another Dwyer Instruments, Inc. innovation. The Dwyer® Model 1640 Differential Pressure Switch resembles the Series 1630 switches. However, the 1640 is equipped with a single pole, double throw floating contact switch (not snap acting) so it functions as a null switch. As the diaphragm moves in response to pressure changes, it moves the floating contact to cause switching action at two preset points with no switching action between these points. The “high” circuit will be closed when rising pressure differential reaches the preset level. The “low” circuit will be closed when falling pressure differential reaches the preset level.

SPECIFICATIONS
  • Service: Air and non-combustible, compatible gases
  • Wetted Materials: Consult factory
  • Temperature Limits: -30 to 110°F (-34.4 to 43.3°C)
  • Pressure Limits: 10 psig (68.95 kPa) continuous, 25 psig (172.4 kPa) surge
  • Switch Type: Single-pole double-throw(SPDT) floating contact (not snap action)
  • Electrical Rating: Non-inductive —2.5 A @ 110 VAC; 1.5 A @ 220 VAC; 1A @ 24 VDC; 0.5 A @ 110 VAC;Inductive — 1 A @ 110 VAC; 0.5 A @220 VAC; 0.5 A @ 24 VDC (de-rate 70-80% for very slow pressure changes)
  • Electrical Connections: 3 screw type,common, normally open and normally closed
  • Process Connections: 1/8 female NPT.
  • Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations
  • Set Point Adjustment: Screw type
  • Weight: 4 Ib 13 oz (2.18 kg)
  • Agency Approvals: CE


Additional Information:

  • Item Code: Series1640
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Differential Pressure Transmitter

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The Series 616KD Differential Pressure Transmitters with One-Touch® technology are designed for simplicity, making them the ideal choice for installers and maintenance professionals. The One-Touch® Differential Pressure Transmitters are cost-effective, compact transmitters that reduce up front costs as well as expenses over the life of the product. These instruments not only alleviate cumbersome turn pots typically found in most transmitters, but eliminate entirely the need to span the instrument during calibration. With a single digital push button, both ZERO AND SPAN are calibratedproperly, nothing else is required. No additional reference pressure sources and separate calibration devices are necessary; no need to remove from service and send to a lab. All that is required of the installer or user is to let the unit sit at zero reference pressure, then push a button. That is it! The transmitter is now ready for operation. Time savings are enormous over the life of the product compared to traditional transmitters which require time to annually remove the product from service plus the additional time to actually perform a complete full-span calibration.

SPECIFICATIONS
  • Service: Air and non-combustible, compatible gases
  • Wetted Materials: Consult factory
  • Accuracy: ±2% FS
  • Stability: ±1% FS/year
  • Temperature Limits: 32 to 122°F (0 to 50°C)
  • Pressure Limits: 2 psi (13.8 kPa)
  • Thermal Effect on Span: ±0.11% FS/°F (±0.19% FS/°C) typ
  • Thermal Effect on Zero: 616KD-X0: 0.6%/°F (1%/°C); 616KD-X1: 0.3%/°F (0.5%/°C); 616KD-X2: 0.2%/°F (0.33%/°C); 616KD-X3: 0.12%/°F (0.2%/°C);616KD-X4: 0.06%/°F (0.1%/°C) FS max
  • Power Requirements: 16 to 35 VDC(2 or 3 wire), 20 to 28 VAC (3 wire)
  • Output Signal: 4 to 20 mA or unit with field selectable 0 to 10 & 0 to 5 volt
  • Zero and Span Adjustments: Push button
  • Loop Resistance: DC=1000 Ω max.; AC=1200 Ω max
  • Current Consumption: 21 mA max
  • Electrical Connections: Screw-type terminal block
  • Process Connections: Barbed, dual size to fit 1/8 & 3/16 (3 mm & 5 mm) ID rubber or vinyl tubing
  • Enclosure Rating: NEMA1 (IP10)
  • Mounting Orientation: Position insensitive
  • Weight: 1.8 oz (51 g)
  • Agency Approval: CE, RoHS


Additional Information:

  • Item Code: Series616KD
  • Minimum Order Quantity: 1 Piece(s)
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DIN Rail Mount Differential Pressure Transmitter

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Mounts on 35 mm DIN Rail, LED Status Indication

The Series 607D DIN Rail Mount Differential Pressure Transmitter senses the pressure of air and compatible gases and sends a standard 4 to 20 mA output signal. The 607D housing is specifically designed to mount on a 35 mm DIN rail in a panel. This mounting style allows for several units to be mounted closely together reducing required space. A wide range of models are available factory calibrated to 0.25% full-scale accuracy in ranges from the very low 0.1 in w.c. to 25 in w.c. The zero control is for field calibration. Units also include red/green LED status of proper transmitter operation. Versatile circuit design enables operation in 2-wire current loops

Specifications
  • Service: Air and non-conductive, non-corrosive gases
  • Wetted Materials: 302 SS, glass,nickel, silicone rubber and brass
  • Accuracy: ±0.25% FS* at room temperature. *RSS includes
  • Stability: ±1% FS/yr
  • Temperature Limits:Operating and compensated: 0 to 170°F (-18 to 77°C);Storage: -65 to 185°F (-54 to 85°C)
  • Pressure Limits: 15 psi (100 kPa)
  • Thermal Effects: (Includes zero and span) ±0.01 FS/°F, 20 to 170°F (-7 to 77°C).
  • Power Requirements: 16 to 32 VDC
  • Output Signal: 4 to 20 mA
  • Zero Adjustment: Potentiometer for zero
  • Response Time:Approximately 10 ms
  • Max. Loop Resistance: DC: 0 to 800Ω
  • Electrical Connections: Screw-type removeable terminal block
  • Process Connections: Barbed fittings for 1/8 (3.12 mm) ID rubber or vinyl tubing
  • Mounting Orientation: Vertical, on a 1.378 (35 mm) DIN rail
  • Weight: 7.0 oz (198 g)
  • Agency Approval: CE


Additional Information:

  • Item Code: Series607D
  • Minimum Order Quantity: 1 Piece(s)
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Wet Differential Pressure Transmitter

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The Series 629 Differential Pressure Transmitter monitors differential pressure of air and compatible gases and liquids with 0.5% accuracy. The design employs dual pressure sensors converting pressure changes into a standard 4 to 20 mA output signal for two wire circuits. Small internal volume and minimum moving parts result in exceptional response and reliability. Terminal block, zero and span adjustments are easily accessed under the top cover. The Series 629 Differential Pressure Transmitter is designed to meet NEMA 4X (IP66) construction.

SPECIFICATIONS
  • Service: Compatible gases & liquids
  • Wetted Materials: Without valve: 316,316L SS. Additional wetted parts with 3-way valve option: Buna-N, silicone grease, PTFE, brass 360, copper, reinforced acetal copolymer
  • Accuracy: ±0.5% FS (includes linearity, hysteresis & repeatability)
  • Temperature Limits: 0 to 200°F (-18 to 93°C)
  • Compensated Temperature Limits: 0 to 175°F (-18 to 79°C)
  • Pressure Limits:See chart
  • Thermal Effect: 0.02%/°F (0.036%/°C) includes zero & span
  • Power Requirements: 13 to 30 VDC (2-wire)
  • Output Signal: 4 to 20 mA. Optional 0 to 5, 0 to 10 VDC
  • Response Time: 50 ms
  • Loop Resistance:0 to 1300 Ω maximum for current output. For voltage outputs, minimum load resistance: 2000 Ω
  • Electrical Connections: Terminal block; 1/2 female NPT conduit
  • Process Connections:1/4 female NPT
  • Enclosure Rating: Designed to meet NEMA 4X (IP66)
  • Mounting Orientation: Not position sensitive
  • Weight: 10.1 oz (286 g)
  • Agency Approvals: CE


Additional Information:

  • Item Code: Series629
  • Minimum Order Quantity: 1 Piece(s)
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Utility Pressure Gauge

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1.5% FS Accuracy, Brass Wetted Parts, Dual PSI/Bar x100 kPa Scales

The Series UGK Gages have dual psi and bar (x100 kPa) scales with ±1.5% accuracy. The Series UGK gages are designed with brass and phosphor bronze wetted parts, and can withstand ambient temperatures up to 140°F (60°C). A wide variety of ranges are available in this economical gage in either bottom or back connection configurations.

SPECIFICATIONS
  • Service: Compatible gases & liquids
  • Wetted Materials: Brass connector,phosphor bronze tube
  • Housing: Black painted steel
  • Lens: Polycarbonate
  • Accuracy: ±1.5% FS
  • Pressure Limit: FS value
  • Temperature Limits: -4 to 140°F (-20 to 60°C)
  • Size: 2.5 (63 mm)
  • Process Connections: 1/4 male NPT
  • Weight: 5.1 oz (145 g) bottom,5.5 oz (155 g) back


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  • Minimum Order Quantity: 1 Piece(s)
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Spirahelic Direct Drive Pressure Gauge

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4-1/2” Turret Mount Gage, ASME Grades A & 2A

Series 7000B Spirahelic® Direct Drive Pressure Gages with turret mount housings feature a triple coil spiral/helical wound Bourdon tube to provide dependable service. Bourdon tube design eliminates gears, springs, linkages and complex movements which can wear and cause inaccuracy or early failure. Series 7000B gages come standard with a dual-size 1/2male NPT and 1/4 female NPT process connection.
SPECIFICATIONS
  • Service: Compatible gases & liquids
  • Wetted Materials: Grade A accuracy:Inconel® X-750 alloy Bourdon tube,nickel plated brass connection block.
  • Grade 2A accuracy: Inconel® X-750 alloy Bourdon tube, type 316L SS connection block
  • Housing: Black polycarbonate case and clear acrylic cover
  • Accuracy: Grade A (2%-1%-2%); Grade 2A (0.5% FS)
  • Pressure Limit: 150% of full-scale. Gage will maintain its specifications for overpressures up to 150% maximum range. Normal operation
  • should be between 25% and 75% of full-scale
  • Temperature Limits: -65 to 180°F (-53.9 to 82.2°C)
  • Size: 4-1/2 (114.3 mm) dial face – Design conforms to ASME B40.1
  • Process Connections: Dual size 1/2 male NPT X 1/4 female NPT, bottom connections
  • Weight: 18.2 oz (516 g)


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  • Minimum Order Quantity: 1 Piece(s)
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Tridicator Gauge

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Product Details:
Minimum Order Quantity1 Piece
Weight12.35 oz
AccuracyPressure +/- 3-2-3%
Temprature30- 40 degree celsius

Combination Pressure/Temperature Gage
The Series TRI2 combines the value of an individual pressure gage and thermometer in one instrument.

These tridicators simplify installation which reduces time and saves money.

The moveable dial with blue pressure markings and red temperature markings make the instrument easy to read.

Pressure is indicated in both psi and kPa, while temperature is measured in both Fahrenheit and Celsius. Series TRI2 comes in three different connection options including lower mount, center back mount, and center back mount with extension shank.

Instructions:-
  • Service: Compatible gases and liquid & phosphor bronze Bourdon tube
  • Housing: Drawn steel, black finish
  • Accuracy: Pressure ±3-2-3%; Temperature ±1 scale division
  • Temperature Range:All models: 80 to 290°F (30 to 140°C)
  • Temperature Limits: Ambient: -40 to 250°F (-40 to 120°C); Process: 80 to 290°F (30 to 140°C) Size: 3 (76 mm)
  • Process Connections: 1/2 male NPT back or bottom, 1/4 male NPT back connection.
  • Weight: 12.35 oz (350 g) center back mount and lower mount; 14.11 oz (400 g) center back mount with extension shank


Additional Information:

  • Item Code: SeriesTRI2
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Digital Pressure Gauge

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The Series DPGA is the only economic digital pressure gage with selectable engineering units on the market. With its 1% accuracy and digital push-button zero, the DPGA is the perfect choice for digitally monitoring the pressures of air andcompatible gases.
The Series DPGW is the only economic digital pressure gage for liquids with the ability to select engineering units on the market. With its 1% accuracy and digital push-button zero, the DPGW is the perfect choice for digitally monitoring thepressures of compatible liquids and gases.

SPECIFICATIONS
  • Service: DPGA:Air and compatible gases; DPGW: Liquids and compatible gases
  • Wetted Materials: DPGA:316L SS, silicone sensor; DPGW:316LSS
  • Housing Materials:ABS plastic
  • Accuracy: ±1.0% FS (includes linearity, hysteresis, repeatability)
  • Pressure Limits: 2X pressure range. Vacuum range max. pressure is 30 psig
  • Temperature Limits: 30 to 120°F (-1 to 49°C)
  • Thermal Effect:0.05% FS/°F
  • Size: 2.62 OD x 1.52 deep
  • Process Connections: 1/4 male NPT
  • Display: 4-digit LCD (.425 H x .234 W digits)
  • Power Requirements: 9V alkaline battery, included, user replaceable
  • Auto Shut-off: 20 minute auto shut-off
  • Weight: 5.6 oz (160 g)


Additional Information:

  • Item Code: SeriesDPGA-DPGW
  • Minimum Order Quantity: 1 Piece(s)
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Digital Calibration Pressure Gage

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±0.05% FS Accuracy, 316 SS Wetted Parts

The Series DCGII Digital Calibration Pressure Gage offers a complete pressure gage with calibration capabilities. With a precise 0.05% full scale accuracy and large 5 digit resolution, this gage can be used in critical industrial applications where precision is most important. This versatile gage only requires one 9V battery or power adapter and can operate up to 5,000 working hours. The Series DCGII 0.05% Digital Pressure Gage can display percent of range, pressure swings or alarm set points. This pressure gage comes complete with eleven selectable pressure units, backlight and zeroing capability.

SPECIFICATIONS
  • Service: Compatible, non-combustible liquids and gases
  • Wetted Materials: 316 SS
  • Other Materials: Housing: Aluminum alloy; Display: Acrylic MR200; Buttons: Silicon gel; Back plate: 304 SS; Back seal: Oil-proof latex
  • Accuracy: 0.05% FS; ±1 least significant digit
  • Temperature Accuracy: ±1°C
  • Pressure Limits: 120% FS
  • Temperature Limits: 14 to 122°F (-10 to 50°C)
  • Compensated Limits: 32 to 122°F (0 to 50°C)
  • Process Connection: 1/2 male NPT
  • Display: 5-digit LCD with blue backlight
  • Power Requirements: 9 V alkaline battery,included, user replaceable,or power adapter accessory
  • Battery Life: Up to 10,000 hours (600 working hours @ default 3 times/s)
  • Auto Shut-off: Backlight: On/off, 10 s, 20 s, 30 s
  • Weight: 1.28 lb (0.58 kg)
  • Agency Approvals: CE


Additional Information:

  • Item Code: SeriesDCGII
  • Minimum Order Quantity: 1 Piece(s)
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Handheld Digital Tire Pressure Gauge

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±1 psi Accuracy, Handheld Design
The Model HTG-01 Handheld Digital Tire Gage reads tire pressure quickly and accurately to help improve fuel economy and increase tire life. Its lightweight, handheld design makes it portable and user friendly with its one button operation. A backlit 1/4 LCD display and illuminated tip ensures easy visibility in low light.The Series HTG also displays three different units of psi, bar and kPa with the push of a button.
Specifications :
  • Service: Compatible gases
  • Wetted Materials:ABSplastic; Rubber o-ring; Silicon
  • Housing Material:ABSplastic
  • Accuracy: ±1% FS
  • Pressure Range: 2 to 100 psi (0.15 to 6.90 bar)
  • Enclosure Rating: IP10
  • Temperature Limits: 32 to 104°F (0 to 40°C)
  • Process Connection: Tire valve stem or equivalent
  • Display: 3-1/2 digit, 1/4 backlit LCD
  • Shutoff: 90 seconds
  • Battery Life: 2000 hours
  • Weight: 0.10 lb (0.05 kg)


Additional Information:

  • Item Code: ModelHTG
  • Minimum Order Quantity: 1 Piece(s)
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Magnehelic Gauges

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Product Details:
Range.25-.75
Measuring pressure15 PSI
ShapeCircular

The Magnehelic gauge is the industry standard to measure fan and blower pressures, filter resistance, air velocity, furnace draft, pressure drop across orifice plates, liquid levels with bubbler systems and pressures in fluid amplifier or fluidic systems.

It also checks gas-air ratio controls and automatic valves, and monitors blood and respiratory pressures in medical care equipment.

Select the Magnehelic gauge for high accuracy, guaranteed within 2% of full scale. Designed for air and non-corrosive gases, 81 models are available to suit any requirement.

Using Dwyer's simple, frictionless Magnehelic gauge movement, this range of products quickly indicates low air or non-corrosive gas pressures - positive, negative (vacuum) or differential.

These gauges resist shock, vibration and over-pressures and contain no manometer fluid to evaporate, freeze or cause toxic or leveling problems.

They are very budget friendly as well!

Design features include a breakage resistant glass, easy-to-see red tipped pointer, near frictionless movement of internal mechanisms, a zero adjustment screw that can be accessed without removing the cover, resistance to overpressures, O-ring seal and die-cast iridite-dipped aluminium cases that have passed a 168 hour salt spray corrosion test.

Features : Magnehelic Gauge
  • Bezel with flange for flush mounting in panel
  • Breakage resistant clear plastic face
  • Precision litho-printed scale
  • Shock-resistant jeweled bearings
  • Easy access to zero-adjustment screw
  • Motion dampening with high viscosity silicone fluid
  • Corrosion resistant die-cast aluminium case
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