Home > Products > Humidity & Temperature Sensors > RHT 2-wire Humidity Transmitter
RHT 2-wire Humidity Transmitter
- 1000 Piece / Pieces per Month
- HK
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- 7 days
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Product Details
Brand Name: | Comeco | Place of Origin: | Russian Federation | Model Number: | RHT |
Usage: | Humidity Sensor | Theory: | Capacitance Sensor | Output: | Analog Sensor |
Product Description
2-wire RH/T Transmitter RHT
• Low cost
• Temperature compensation system
• Two 2-wire transmitters for RH and temperature
• Optional built-in Pt temperature sensor
• Optional stainless steel sintered filter
• IP65 protection
Using thin-film sensor with capacitance changing proportionally to medium relative humidity, RHT measures RH of air and non-aggressive gases and converts it into standard 4-20mA 2-wire signal. A built-in temperature drift compensation system guarantees good stability of measurement and an additional temperature sensor or second 2-wire transmitter may be built-in for measurement of both medium relative humidity and temperature. The RH transmitter is factory calibrated and does not need custom adjustment, while the temperature transmitter can be additionally calibrated on-site. The device is available in 3 variants with different mounting and temperature ranges. All this, in addition to the high protection class, the small size, and the low price, make RHT a convenient solution for many RH measurement applications.
RHT 2-wire Humidity Transmitter Technical specifications
Input | |
Humidity | capacitive sensor, 0 - 100 %RH |
Temperature (option) | Pt100...1000 (w=1.385), -20 ~ 90 °C |
RH adjustment | not needed (factory set) |
Temperature ZERO adjustment | ± 20% |
Temperature SPAN adjustment | ± 20% |
Output | |
RH current output | 4 - 20 mA, 2-wire |
- input range correspondence | 0 - 100 %RH |
Temperature current output (option) | 4 - 20 mA, 2-wire |
Linearity proportional to | measured value |
RH output limit | 100% RH for condensation |
Power supply | |
Supply voltage | 8 - 36 VDC |
Admissible variations | 1 Vp-p at 50 Hz |
Maximum line load | 800 Ω at 24V/20mA |
Accuracy | |
RH measurement error | ≤ 2.5% from span |
Temperature measurement error | ≤ 0.5% from span |
Non-linearity | within measurement error |
Temperature drift for RH | 0.05% from span for 1°C |
Temperature drift for temperature | 0.01% from span for 1°C |
Operating conditions | |
Ambient temperature | -10 ~ 60°C |
Ambient humidity | 0 - 98 %RH, non-condensing |
Design and materials | |
Case material | ABS plastic |
Sensor protection | plastic cap with stainless steel mesh |
Sintered filter (option) | stainless steel, 75 μm |
Wiring | screw terminals inside housing |
Protection class | IP65 (NEMA 4, 4x) |
RHT 2-wire Humidity Transmitter Ordering code RHT* - G6 - #1.#2
Code | Feature or option | Code values |
* | Variant | A - for wall mounting, B - for in-hole mounting, D - high-temperature |
G6 | Stem length 'n' [mm] | 100…500 (step 10 mm) |
#1 | Built-in temperature sensor / transmitter | X - none, D - Pt100, F - Pt500, G - Pt1000, TT - 2-wire transmitter |
#2 | Sintered filter | X - none, S - sintered filter mounted |
Contact Us
- Shenzhen Isweek Ltd.
- Contact nameMs Rita yu
- Phone86-755-83289036
- Address16 Floor, Building #3, Zhongke Mansion, Gaoxin South 1st Rd, Hi-Tech Park, Nanshan Shenzhen,Guangdong
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