The Veris HWX3XSTC deluxe wall humidity sensor provides an ideal solution for measuring relative humidity in all conditions. Equipped with a thin-film capacitive sensor that is easily replaceable in the field, the Veris HWX3XSTC's most common application is the management of energy systems such as controlling HVAC systems for improved comfort and energy savings in museums, schools, printing shops, and other locations requiring humidity control. The HWX3XSTC also facilitates compliance with ASHRAE standards for environmental control and indoor air quality.
The HWX3XSTC has the capabilitiy to sense humidity in harsh environments. The thin-film polymer capacitive sensor element recovers from 100% saturation. You may replace the element in the field, helping to maintain accuracy and minimize downtime. Easy installation includes polarity insensitive, two-wire 4-20mA and flexible systems compatibity which both save time in the field, and allow you to stock fewer devices.
Product Specifications
| HS Element |
Digitally profiled thin-film
capacitive (32 bit mathematics) U.S. Patent 5,844,138 |
| Accuracy at 25°C from 10-80% RH* |
±3%
±1% at 12-60% RH in voltage output mode;
±1% at 12-60% RH in mA output mode with temp transmitter;
±1% at 20-40% RH in mA output mode |
| Reset Rate** |
24 hours |
| Stability |
±1% @ 20°C (68°F) annually, for two
years |
| Operating Humidity Range |
0 to 100% RH (non-condensing) |
| Hysteresis |
1.5% typical |
| Temperature Coefficient |
±0.1% RH/°C above or below 25°C
(typical) |
| Analog Output 4-20mA version |
2-wire, polarity insensitive, (clipped
and capped) |
| Scaling |
0-100% RH |
| Operating Temperature Range |
10° to 35°C (50° to 95°F) |
| Input Power*** |
loop powered 12-30VDC only, 30mA max. |
| Optional Temperature Transmitter
Output |
Digital, 4-20mA, (clipped and capped);
accuracy ±0.5°C (±1°F) typical |
| EMC Conformance – CE Option |
EN 50081-1, EN 50082-1, EN 61000-4-4,
EN 61000-4-5, EN 61000-4-3, ENV 50204, EN 61000-4-6 |
| Dimensions |
4.8"H x 3.5"W x 1.2"D |
| Display |
None |
| NIST |
No |
| US or EU |
Standard |
| Temp |
Yes |
| Sensor Type |
1k Platinum, RTD |
*Specified accuracy with
24VDC supplied power with rising humidity. RTD/Thermistors are not compensated
for internal heating
of product. |
| **Reset Rate is the time
required to recover to 50% RH after exposure to 90% RH for 24 hours. |
***One side of
transformer secondary is connected to signal common, so an Isolation transformer
or dedicated power supply
may be required.Shielded cabling is required for conformance to EMC
standards. |
