1、 Humidity and temperature transmitters H2N (duct), H3N (outside) and H4N (remote) are designed for environment monitoring and controlling in industrial and commercial buildings.
2、 High performance digital sensors and circuits, ensure accurate measurement and temperature compensation
3、Digital technology applied, multiple outputs optional, over voltage and reverse polarity protection, high reliability and anti-interference capability
4、LCD display temperature and humidity alternatively
5、LCD & function keys can set parameters and calibrate output, so the product can be a stand alone controller
6、Good long term stability and reliability
7、 100% field changeable sensor without re-calibration
8、Fast response
9、 High protection rate up to IP65
| Relative Humidity |
| Sensor: | Digital polymer |
| Range: | 0~100%RH |
| Output: | see models |
| Accuracy: | 2%，3%@ 25℃ & 20~80%RH |
| Hysteresis: | <±1%RH |
| Response time: | <10s (25°C, in slow air) |
| Drift: | <±0.5%RH / year |
| Temperature |
| Sensor: | Digital temperature sensor or RTD/thermistor |
| Range: | 0~50°C, 0~100°C, -40~60°C, or others |
| Output: | 4~20mA (2wires), 0~10VDC (3wires), RS485/Modbus, or RTD/thermistor: seeModels and resistance table |
| Accuracy: | transmitter: ≤±0.4°C @ 5~60°C or 0.3°C @ 5~60°C RTD or thermistor: typical 0.2~0.4°C@ 25°C, see models |
| Power: | Current: 18.5~35VDC (Rload=500Ω) 8.5~35VDC (Rload=0Ω) Voltage: 16~28VAC/ 16~35VDC |
| Output Load: | ≤500Ω (current), ≥2KΩ (voltage) |
| Relay output: | 2×SPST, 3A/30VDC, 3A/250VAC |
| Display and keys: | 4 digits LCD, with unit indication, backlight (4-20mA N/A), 3 touch keys, see more details on LCD & Keys operation |
| Work Temp: | -30~70°C (LCD: 0~50°C), 5~95%RH (Non condensing) |
| Housing: | Fireproof ABS housing, UHMW-PE filter (H2/H4N), SS probe and sintered filter (H3N) |
| Protection: | IP65 |
| Weight: | H2N:360g;H3N:270g;H4N:430g |
| Approval: | CE |
Models：
| Models | H2N
H3N
H4N |
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| Duct mount Temp./RH transmitter Outside air Temp./RH transmitter Remote mount Temp./ RH transmitter |
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RH Accuracy |
| 2 3 |
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| ±2%RH(0.3℃) ±3%RH(0.4℃) |
RH Output |
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| 1 2 8 |
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| 0-10VDC(3 wires) 4-20mA(2 wires) RS485/Modbus |
Temp Output |
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| 0 1 2 3 4 5 6 7 8 9 A |
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| No 0-10VDC(3 wires) 4-20mA(2 wires) PT1000, ±0.2°C@25°C PT100, ±0.2°C@25°C NTC20K,±0.4°C@25°C Ni 1000, ±0.4°C@25°C NTC10K-II, 0.4°C@25°C RS485/Modbus NTC10K-III,0.4°C@25°C NTC10K-A, 0.4°C@25°C |
Temp Range |
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| 0 1 2 3 7 |
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| No 0~50℃ 0~100℃ -40~60℃ others |
Relay |
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| 0 1 |
| No 2×SPST(4-20mA N/A) |
LCD & Keys |
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| 0
1 2 | No LCD LCD & Keys |
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*1. H2,3,4N series current products are powered by RH circuit, so the RH circuit must be powered. Otherwise it could not work.
*2. Only when the temperature output is 1 or 2, the temperature range 1-7 is applicable. Otherwise, always use 0 as temerature range selection.
*3. See resistance table on page 1 of this catalog.
CN
