0-5V/10V and 4-20mA RH/Temp (thermistors optional)
LCD display with field calibration menu
Field replaceable element
Applications
Outdoor humidity and temperature measurement for building control
The HT1O Series is designed to be mounted on the building exterior to provide outside air RH measurement. The HT1O Series combines excellent stability with reliable operation in 2% or 3% RH accuracy options. Optional temperature transmitters, RTDs and thermistors add further flexibility when ordering. The standard LCD, gasketed lid and field replaceable elements make the initial installation and future service a breeze.
At last, reliable outside RH/T Thanks to our chip on board CMOS sensor, you get stable, temperature compensated, noise-free performance. Add in field adjustability with LCD and you can address the most demanding applications with ease. Our sensor is protected by a sintered stainless steel media filter for long life. Choose from temperature transmitter or RTD/thermistor options. Trust Your Better Senses.
2% or 3% RH versions with field replaceable sensor
Switch selectable 5V/10V and 4-20mA RH/T transmitter outputs
Thermistor outputs for temperature optional
Easy to maintain
Field calibration. LCD and push-button menu allows easy adjustment of calibrated RH value as needed to maintain certification.
Replace a sensor without disturbing conduit
Superior RH sensing
On-board temperature compensation for RH. Eliminates temperature coefficient errors and achieves an excellent measurement accuracy as well as high repeatability and offset stability.
State of the art testing facilities. Multi-point calibration certifcation options. Consult factory.
Quality
Industry leading 7-year warranty/ 2-year replaceable element warranty
SPECIFICATIONS
Power Supply
3-wire voltage mode (0-5/10V)
12-30VDC/24VAC(1), 15mA max
2-wire current mode (4-20mA)
12-30VDC, 30mA max
Outputs
RH and Temperature
3-wire 0-5/10V(4) or 2-wire 4-20mA
Output scaling
RH
0-100% RH
Temperature
32-122°F (0-50oC) or -40-140°F (-50-60oC)
Thermistor/RTD
Optional
See ordering table
Media filter
Sintered Stainless Steel
Relative Humidity
Accuracy
2% models: ±2% max 0 to 100%RH; ±1.5% Typ 0 to 80% RH @25°C
3% models: ±3% max 0 to 100%RH; ±2% Typ 0 to 100% RH @25°C
Resolution
0.01%RH
Hysteresis
±0.8%RH
Non-Linearity
factory linearized <1%RH
Temperature coefficient
fully compensated by on-board temp sensor
Response time (2)
8s
Output update rate
0.5s
Operating range
0 to 100%RH (non-condensing)
Long term drift
<0.25%RH per year
Operating conditions (3)
41 to 140°F (5 to 60°C) @ 20 to 80% RH
Temperature
Accuracy
2% RH models, <±0.25°C; 0.1° C typ @ 25° C
3% RH models, <±0.3°C; 0.25° C typ @ 25° C
Resolution
0.01°C
Repeatability
0.4°C
Response time (2)
2s
Output update rate
0.5s
Operating range
-40 to 140°F (-40 to 60°C)
Enclosure
Materials
ABS/Polycarbonate
Dimensions
4.0"h x 4.4"w x 2.1"d (+2.8" solar shield)
One side of transformer,, secondary is connected to signal common. Dedicated transformer is recommended.
Time for reaching 63% of reading at 25° C and 1 m/s airflow.
Long term exposures to conditions outside normal range at high humidity may temporarily offset the RH reading (+3%RH after 60 hours)
15-30VDC/24VAC power supply voltage required for 10 volt output.
