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Air Velocity Monitor
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Product Details:
| Material | na |
| Hook Type | na |
| Brand | na |
| Display Type | na |
| Accuracy | na |
| Range | na |
Model 660 Air Velocity Monitors are a practical, affordable way to continuously monitor for safe air flows through laboratory fume hoods. They are typically installed in the fume hood side fascia and connected to the interior sidewall via 1-1/8" flexible tubing. As the exhaust fan draws air through the device, a sensitive constant temperature thermistor measures flow and lights a green (normal), yellow (high) or red (low) LED. An audible alarm also warns of low flow and requires manual resetting. Mounting holes fit standard single gang electrical box.
SPECIFICATIONS
- Service:Air and non-combustible, non-corrosive gases
- High Setpoint Range: 0-275 FPM (0-1.397 m/s)
- Low Setpoint Range: 0-150 FPM (0-.792 m/s)
- Repeatability: ±7% of full span, 0-50 and 150-275 FPM; ±5% of full span, 50-150 FPM
- Compensated Temperature Range: 50 to 90°F (10 to 32.2°C)
- Operating Temperature Range: 32 - 120°F (0 to 48.9°C)
- Power Supply: 24 VAC, 3 watts maximum
- Response Time: 6-10 seconds
- Warm-Up Time: 3-5 minutes (no flow)
- Audible Alarm: 75 dB between 3-10 feet
- Weight: 3 oz (85g)
- Mounting Hardware: (2) #6 x 1 sheet metal screws, (2) 6-32 x 7/8" machine screws
Additional Information:
- Item Code: Model660
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Hazardous Area Humidity/ Temperature Transmitter
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Product Details:
| Usage/Application | na |
| Model Name/Number | na |
| Brand | na |
| Voltage | na |
| Accuracy | na |
| Operating Range | na |
The Series HHT Hazardous Area Humidity/Temperature Transmitter takes accurate measurements in the harshest of environments. The transmitter is offered in explosion-proof and intrinsically-safe versions depending on the application’s requirements. The explosion-proof model is offered with 4 to 20 mA output for humidity only. The intrinsically-safe version is offered with 4 to 20 mA output for humidity and temperature. Both versions have an optional two line alphanumeric display to show the current humidity and temperature. The Series HHT humidity/temperature transmitter is excellent for offshore. HVAC applications, dust and grain applications. Intrinsically safe models require an intrinsically safe barrier.
SPECIFICATIONS
- Relative Humidity Range: 0 to 100% RH
- Temperature Range: -40 to 140°F (-40 to 60°C)
- Accuracy: ±2% 10 to 90% RH, ±0.9°F at 72°F (±0.3°C at 25°C)
- Hysteresis: ±1%
- Repeatability: ±0.1% typical
- Temperature Limits:-40 to 140°F (-40 to 60°C)
- Storage Temperature:-40 to 176°F (-40 to 80°C)
- Compensated Temperature: -40 to 140°F (-40 to 60°C)
- Power Requirements: For intrinsically safe models HHT-IX, 9.5 to 28 VDC. For explosion-proof models HHT-EX, 16.5 to 28 VDC
- Output Signal: 4 to 20 mA, 2 channels for humidity/temperature models (loop power on RH)
- Response Time: 15 seconds
- Electrical Connections: Screw terminal block
- Conduit Connection: 1/2 female NPT
- Drift: <1% RH/year
- RH Sensor: Capacitance polymer
- Temperature Sensor:Solid state band gap
- Housing Material:Aluminum
- Display: Optional 2 line alpha numeric, 8 characters/line. Temperature display is °F/°C selectable
- Display Resolution: RH: 0.1%: Temperature 0.1°F (0.1°C)
- Weight: 2 lb 8 oz (1134 g)
- Enclosure Rating: NEMA 4X (IP66). Models HHT-EX: FM ExplosionProof, Class I Div. 1 Group B, C, D, Class II Div. 1 Group E, F, G, Class
- III Div. 1; Models HHT-IX: FM Intrinsically Safe, Class I Div. 1 Group A, B, C, D, Class II Div. 1 Group E, F, G, Class III Div. 1 T4
- Agency Approvals: CE, FM
Additional Information:
- Item Code: SeriesHHT
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Outside Air Humidity Radiation Shield
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Product Details:
| Brand | na |
| Color | na |
| Material | na |
| Thickness | na |
| Country of Origin | Made in India |
| Outside | Air Humidity |
The Series RHRS Radiation Shield protects outside air humidity transmitters from rain and radiated heat. With the curved shape and color of the plates, air flow is able to move across the sensor to keep radiated temperatures from rooftops and surrounding surfaces from affecting humidity readings. For ease of installation, the Series RHRS has integral pipe mounting hardware which can be removed for surface mounting applications.The brackets on the Series RHRS are specifically designed to be installed on the Dwyer Series RHP outside air humidity transmitters with sintered filters.The pipe mounting bracket fits 3/4 to 1-1/2 iron pipe.
Additional Information:
- Item Code: SeriesRHRS
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Duct Mounted Airflow Measurement Station
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Product Details:
| Usage/Application | na |
| Material | na |
| Model Name/Number | na |
| Brand | na |
| Application Media | na |
| Process Pressure | na |
| Accuracy | na |
| Capacity | na |
| Temperature Range | na |
The Series FLST Airflow Measurement Stationis easy to install – simply connect the tubing to the station fittings, then to a differential pressure manometer, gage, transmitter or switch. Single or multiple airflow elements are factory mounted and pre-piped in a casing designed for flanged connection to the ductwork. Standard materials consist of a G90 galvanized casing and 6063- T5 anodized aluminum flow sensors, suitable for most HVAC applications.
The Series FLST utilizes an airflow averaging element in a head-type device, generating a differential (velocity) pressure signal similar to the orifice, venturi,and other head producing primary elements. Strategically located sensing ports continually sample the total and static pressures when inserted normal to flow.
Total pressures sensed by the upstream ports are continually averaged withinthe airflow element in an isolated chamber. The static sensing ports are averaged in a second isolation chamber. Multiple elements are joined together for connection to a differential measurement device (gage, transmitter, etc.) forflow measurement and indication purposes.
SPECIFICATIONS
- Accuracy: Within 2% of actual flow when installed in accordance with published recommendations
- K-Factor: 0.97
- Velocity Range:100 to 10,000 FPM (0.51-51 m/s)
- Temperature Limits: Galvanized casings and aluminum elements 350°F
- (177°C) continuous operation (in air) 400°F (204°C) intermittent operation (in air)
- Wetted Material: Elements: 6063-T5 anodized aluminum; Casings: 16 ga
- G90 galvanized steel
- Humidity:All airflow stations 0 to 100% non condensing
- Process Connections: 1/4 compression fittings
Additional Information:
- Item Code: SeriesFLST
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Inclined Vertical Manometers
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Product Details:
| Meauring Range | 10 mm WC |
| Connection Type | Nozzle Type |
| Tube | Acrylic |
| Brand | Dwyer |
| Manometer Fluid | Water |
| Column | 2 |
| Color | White |
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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Digihelic Differential Pressure Controller
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Product Details:
| Minimum Order Quantity | 1 Piece(s) |
| Pole Type | Single Pole |
| Throw Type | Single Throw |
| Control Type | High Limit |
| Current | 1 A |
| Output Signal | 4-20 mA |
| voltage power | 100 to 240 VAC |
Features:
- Service: Air & non-combustible, compatible gases
- Wetted Materials: Consult factory
- Housing Material: Aluminum, glass
- Accuracy: ±0.5% at 77°F (25°C) including hysteresis & repeatability(after 1 hour warmup)
- 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 240VAC, 50 to 400 Hz or 132 to 240VDC; Low voltage power = 24VDC ±20%
- Power Consumption: Low voltage power = 24 VDC - 130 mA max; High voltage power= 100 to 240 VAC, 132 to 240VDC - 7VA max
- Output Signal: 4-20 mA DC into 900 Ω max
Additional Information:
- Item Code: SeriesDHII
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Digihelic Differential Pressure Controller
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Product Details:
| Output Signal | 4-20 mA |
| Response Time | 250 ms |
| Current | 1 A, 2 A |
| Pole Type | Single Pole |
| Throw Type | Single Throw |
| Control Type | High Limit |
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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Wall Mount Humidity / Temperature / Dew Point Transmitter
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Product Details:
| Application | Industrial |
| Range | 0 to 100% RH |
| Temprature | -28.9 to 60 degree celsius |
| Weight | 0.3 lb |
The Series RHP-W Wall Mount Temperature/Humidity/Dew Point Transmitteris the most versatile room transmitter on the market. The stylish housing is well vented to provide air flow across the sensor to improve measurement accuracy.
An optional LCD display can be integral to the transmitter or a remote display can be ordered for building balancing or LEED® validation.
The LCD display indicates the ambient temperature along with the humidity or dew point. The transmitter has internal dip switches to select the temperature engineering units and whether the transmitter outputs humidity or dew point.The humidity and temperature sensors are field replaceable to reduce service cost and inventory.
The humidity and dew point can have either a current or voltage output, while the optional temperature output can be a current, voltage, RTD or thermistor.
Thermistor or RTD For models with current or voltage for the temperature output, the temperature range is field selectable.
SPECIFICATIONS
- Relative Humidity Range:0 to 100% RH
- Temperature Range:-40 to 140°F (-40 to 60°C) for thermistor and RTD sensors. -20 to 140°F (-28.9 to 60°C) for solid state band gap temperature sensors
- Dew Point Temperature Range:-20 to 140°F(-28.9 to 60°C); 0 to 100°F (-17.8 to 37.8°C); 40 to 90°F(4.4 to 32.3°C); -4 to 140°F (-20 to 60°C) field selectable ranges
- Accuracy:RH:Model RHP-2XXX ±2% 10-90%RH @ 25°C; Model RHP-3XXX ±3%
- 20-80% RH@ 25°C; Model RHP-5XXX ±5% 20-80% RH @ 25°C; Thermistor temperature sensor:±0.36°F @ 77°F (±0.2°C @ 25°C); RTD temperature sensor:DIN Class B; ±0.54°F @ 32°F (±0.3°C @ 0°C);Solid state band gap temperature sensor:±0.9°F @ 77°F (±0.3°C @ 25°C)
- Hysteresis:±1%
- Repeatability:±0.1% typical
- Temperature Limits:Operating: -40 to 140°F (-40 to 60°C); Storage:-40 to 176°F (-40 to 80°C)
- Compensated Temperature Range:-4 to 140°F (-20 to 60°C)
- 4-20 mA Loop Powered Outputs: Power requirements:10 to 35 VDC; Output signal:4 to 20 mA, 2 channels for humidity/solid state temperature sensor models (loop powered on RH). Switch selectable RH/dew point. Switch
- selectable normal or reverse output
- 0-5/10V Outputs:Power requirements:15 to 35 VDC or 15 to 29 VAC; Output load: 5 mA max., 2 channels for humidity/solid state temperature sensor models. Switch selectable 0-10V/2-10V or 0-5V/1-5V output. Switch selectable RH/dew point. Switch selectable normal or reverse output
- Solid State Band Gap Temperature Sensor Output Ranges:Switch selectable, -20 to 140°F(-28.9 to 60°C); 0 to 100°F (-17.8 to 37.8°C); 40 to 90°F(4.4 to32.3°C); -4 to 140°F (-20 to 60°C)
- Response Time:15 seconds
- Electrical Connections:Screw terminal block
- Drift:<1% RH/year
- RHSensor:Capacitance polymer
- Enclosure Material:Warm gray polycarbonate
- Display:Optional LCD, backlit on 0-5/10V models. Switch selectable %RH or dew point, °F/°C
- Display Resolution:RH:1%; Temperature:0.1°F(0.1°C); Dew Point:1°F(1°C)
- Weight:0.3 lb (0.14 kg)
- Agency Approvals:CE
Additional Information:
- Item Code: SeriesRHP-W
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Fume Hood Monitor
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Product Details:
| Minimum Order Quantity | 1 Piece |
| Alarm Range | 30-400 FPM |
| Alarm Indication | Red LED |
| Weight | 5.0 oz |
The Model 670 Fume Hood Monitor continuously senses air flow through the face of the fume hood, ensuring safe levels of fresh air are exhausting potentially hazardous fumes eliminating operator exposure.
The 670 provides a highly accurate hot wire sensor to detect very low flows common on fume hoods.
LED safe and alarm status indicators, audible alarm with temporary or permanent horn silence, relay alarm output, sash alarm input and an input for night set-back.
The Model 670 comes with everything required to quickly install the unit including a mounting bracket, 24 of tubing for connecting to the inside of the hood wall and a 120 Volt AC power adapter.
Instructions:-
- Service: Fume hood face velocity air flow
- Alarm Range: 30-400 FPM (0.15-2.0 m/s)
- Alarm Indication: Red LED & audible alarm
- Low Air Velocity Alarm Delay: Fixed 5 secs
- Visual LED Display: Red: Alarm;Green: Normal
- Horn Silence: Yes-temporary and permanent
- Accuracy: Face velocity ±10%.
- Temperature Limits: Operating temperature: 55 to 86°F (13 to 30°C); Storage temperature: -40 to 150°F (-40 to 65°C)
- Power Requirement: 15 VDC 500 mA; 120 VAC, 60 Hz power transformer included
- Sash High Indication: Using a two wire micro switch or 3 wire proximity switch input, rated for 24 VDC usage
- Mounting: Semi flush, flush or surface mounted when using included bracket
- Weight: 5.0 oz (141 g)
- Agency Approval: CE
- Relay Output Low Air Flow Alarm: 5 amps @ 250 VAC
- Relay Input For Night Setback: 2 wire rated for 24 VDC usage
Additional Information:
- Item Code: Model670
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Duct Mounted Airflow Measurement Station
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Product Details:
| Minimum Order Quantity | 1 Piece |
| Process Connections | 1/4 compression fittings |
| Velocity Range | 100 to 10,000 FPM |
| Shape | Circular |
The Series STRA Airflow Measurement Stationis easy to install – simply connect the tubing to the station fittings, then to a differential pressure manometer, gage, transmitter or switch. Single or multiple airflow elements are factory mounted and pre-piped in a casing designed for flanged connection to the ductwork.
The Series STRA utilizes an airflow averaging element in a head-type device, generating a differential (velocity) pressure signal similar to the orifice, venturi, and other head producing primary elements.
Instructions:-
- Accuracy: Within 2% of actual flow when installed in accordance with published recommendations
- K Factor:0.97
- Velocity Range:100 to 10,000 FPM (0.51 to 51 m/s)
- Wetted Materials: Elements: 6063-T5 anodized aluminum;Casings: 16 ga G90 galvanized steel, 3003 aluminum air flow straightener
- Temperature Limits: Galvanized casings & aluminum elements 350°F (177°C) continuous operation (in air), 400°F (204°C) intermittent operation (in air)
- Humidity Limits:All airflow stations 0 to 100% non condensing
- Process Connections: 1/4 compression fittings
Additional Information:
- Item Code: SeriesSTRA
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Bypass Damper Switch
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Product Details:
| Brand | Dwyer |
| Model Name/Number | SERIES BYDS |
| Country of Origin | Made in India |
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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