Datasheet Content
146_Layout 2 7/2/12 3:39 PM Page 146
Series
WHT
Weather-Resistant Humidity/
Temperature Transmitter
Compact Housing, Sintered Filter
2X 5/16 [7.94]
3-31/64
[88.5]
4-9/16 1-27/64 1-31/64
[115.89] 3 [36.12] [37.70]
AIR QUALITY
[76.2]
4
[101.6]
2-3/4
[69.85]
The Compact Series WHT Humidity/Temperature Transmitter is designed to SPECIFICATIONS 0 to 10 V Output Models:
withstand the elements. A removable sintered filter protects the polymer capacitance Relative Humidity Range: 0 to 100% Power requirements: 15 to 35 VDC
sensor from solid objects that may come in contact with the transmitter. The transmitter RH. or 15 to 29 VAC;
is available with 4 to 20 mA or 0 to 10 VDC output signals for both temperature and Temperature Range: -40 to 140°F Output signal: 0 to 10 V @ 5 mA
humidity. This transmitter is ideal for measuring outside air temperature and humidity (-40 to 60°C). max.
levels for air handling economizer applications. Accuracy, RH: ±3% 20 to 80% RH, 0 to 5 V Output Models:
±4% @ 10-20%, 80 to 90%. Power requirements: 10 to 35 VDC
Accuracy, Temp Models with 4 to 20 or 10 to 29 VAC;
Model Accuracy RH Output Temperature
Humidity/Temperature
mA Temp. Output: ±0.9°F @ 72°F Output signal: 0 to 5 V @ 5 mA max.
WHT-310 3% 4 to 20 mA None
(±0.3°C @ 25°C). Response Time: 15 seconds.
WHT-311 3% 4 to 20 mA 4 to 20 mA
Accuracy, Temp Models with Passive Electrical Connections: Removable
WHT-320 3% 0 to 10 V None
Thermistor Temp Sensor: ±0.36°F @ screw terminal block.
WHT-322 3% 0 to 10 V 0 to 10 V
77°F (±0.2°C @ 25°C). Drift: <1% RH/year.
Transmitters
WHT-330 3% 0 to 5 V None
Hysteresis, RH: ±1%. RH Sensor: Capacitance polymer.
WHT-333 3% 0 to 5 V 0 to 5 V
Repeatability, RH: ±0.1% typical. Temperature Sensor: 4 to 20 mA
WHT-31A 3% 4 to 20 mA 10 K Ohm
Temperature Limits: -40 to 140°F output, solid state band gap. Passive
WHT-32A 3% 0 to 10 V 10 K Ohm
(-40 to 60°C). output: 10K @ 25°C thermistor (Dwyer
Note: For 2% accuracy, change the leading 3 to a 2. Storage Temperature: -40 to 176°F curve A).
(For example, WHT-210) (-40 to 80°C). Enclosure: ABS.
Compensated Temperature Range, Enclosure Rating: Designed to meet
RH: -4 to 140°F (-20 to 60°C). NEMA 3S (IP54).
4 to 20 mA Loop Powered Models: Weight: 0.3 oz (8.5 g).
Power requirements: 10 to 35 VDC; Agency Approvals: CE.
Output signal: 4 to 20 mA.
Model ™
AQS-1
AQStick Ambient Volatile Organic
Compound Monitor
Powered by USB Port, Local Indication
2-1/64
[51.31]
49/64 3/8
[19.64] [9.59]
2-15/64
[56.81]
The AQStick™ Ambient Volatile Organic Compound (VOC) Monitor monitors SPECIFICATIONS
ambient air quality by detecting the VOC content in the air. Some common sources of VOC VOC’s Detected: Alcohols, aldehydes, ketones, organic acids, aliphatic and aromatic
contamination are carpets, building materials, paints, cleaners, and tobacco smoke. Even hydrocarbons.
low concentrations of these compounds can affect building occupants’ comfort. A computer’s Sensor: MEMS metal oxide semiconductor.
USB port provides power for the sensor and the LED lights which change color in Power: Powered from PC USB port.
accordance with the ambient air quality. In order to correspond with ASHRAE’s standards Temperature Limits: 32 to 122°F (0 to 50°C).
for air quality, the VOC reading from the monitor is converted from a percentage Humidity Limits: 5 to 95% RH (non-condensing).
contaminated to an equivalent PPM reading of CO2. The percentage contaminated Agency Approval: CE.
multiplied by 2000 PPM of CO2 gives the equivalent concentration of CO2. From the factory,
the LED is green under 1000 PPM CO2, yellow for 1000 to 1500 PPM CO2 and red above
1500 PPM CO2. These factory values can be changed using the free online software. When
using the free online software, the AQStick™ ambient VOC monitor can log and graph how Model AQS-1, Ambient Volatile Organic Compound Monitor
building conditions change over time.
AQStickTM is a trademark of Dwyer Instruments, Inc.
146 DWYER INSTRUMENTS, INC. | www.dwyer-inst.com
Série
WHT Transmetteur d’humidité et de température étanche
Boîtier Compact, Filtre Fritté
2X 5/16 [7.94]
3-31/64
4-9/16 [88.5] 1-27/64 1-31/64…
