Key Points
- 2% or 3% accuracy (NIST certification options)
- 0-5V/10V and 4-20mA RH/Temp (thermistors optional)
- LCD display with field calibration menu
- Field replaceable element
Applications
- HVAC room humidity and temperature measurement and control
- Replaceable element is ideal for difficult environments such as swimming pools
The HT1D Series is designed with both the engineer and field technician in mind. The HT1D Series combines excellent stability with reliable operation in 2% or 3% RH accuracy options. Optional temperature transmitters, RTDs and thermistors add further flexibilty when ordering. The standard LCD and field replaceable elements make the intitial installation and future service a breeze.
Senva duct RH gives you the edge. Thanks to our chip on board CMOS sensor, you get stable, temperature compensated, noise-free performance. Add in field adjustbility 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. And should the element ever need replacing, you can do so by simply removing it without disturbing the installation making it ideal for harsh environments. Choose from temperature transmitter or RTD/thermistor options. Trust Your Better Senses.
Versatile
- 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.
- Field replaceable 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. Certification options: 8-point (NIST traceability—consult factory)
Quality
- Industry leading 7-year warranty/ 2-year replaceable element warranty
| SPECIFICATIONS |
| Power Supply |
0-5V or 0-10V operation |
12-30VDC/24VAC(1), 15mA max. |
| 4-20 mA operation |
12-30VDC, 30mA max. |
| Outputs |
RH% and Temperature |
3-wire 0-5/10V(4) (jumper) or 2-wire 4-20mA, selectable |
| Output scaling |
RH% |
0-100% RH |
| Temperature |
32-122°F (0-50°C) or -40-140°F (-40 to 60°C) (jumper) |
| Thermistor/RTD |
Optional |
See ordering table |
| Media filter |
|
PBT with water-vapor permeable membrane |
| 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% models, <±0.25°C; 0.1°C typ @ 25° C |
| 3% models, <±0.3°C; 0.25° C typ @ 25° C |
| Resolution |
0.01° C |
| Repeatability |
0.4° C |
| Response time (2) |
8s |
| 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 (+6.8" probe) |
- 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.
All prices shown are excluding tax unless otherwise specified.
