| Product Range |
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| PRESSURE INSTRUMENTS |
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| TEMPERATURE INSTRUMENTS |
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| LEVEL INSTRUMENTS |
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| FLOW INSTRUMENTS |
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| HUMIDITY INSTRUMENTS |
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| RH1 - Space Mount |
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| RH2 - Duct Mount |
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| RH3 - Wall Mount |
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| RH4 - Remote Mount |
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| HUM - Humidity Transmitter |
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| HP1 - Pen |
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| H5 - Wall Mount RH+T Transmitter |
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| TH03 - Temperature & Humidity Transmitter |
| Dew Point Transmitters |
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| CLEANROOM INSTRUMENT |
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| HVAC / BMS SENSORS |
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| AIR QUALITY SENSOR |
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| WATER QUALITY SENSOR |
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| VAV BOXES |
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| BTU METER |
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| VALVES |
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| INDICATORS & CONTROLLERS |
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| DATALOGGER |
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| PORTABLE INSTRUMENTS |
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| ACCESSORIES |
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| ONLINE CATALOGUE |
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| CATALOGUE REQUEST |
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RH4 : Remote Mount Humidity Temperature Transmitter |
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Model |
: RH4 |
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Range |
: 0 to 100%RH / -40 to 100ºC |
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Output |
: 4 - 20mA, 0 - 10V, RS485 Modbus |
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Display |
: NIL |
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Accuracy |
: ± 2%RH / ±0.3 K |
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Versions |
: Remote Mount |
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| Special Features |
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High performance digital sensors and circuits, ensure accurate measurement and temperature compensation |
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Good long term stability and reliability |
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100% field changeable sensors, no re-calibration needed |
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Fast response |
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Digital technology applied, multiple output optional, over voltage and reverse polarity protection, high reliability and \interference capability |
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Industrial design, SS probe and selectable filter |
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High protection rate up to IP65 |
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| Applications |
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| H2, 3 and 4 humidity and temperature transmitters are designed for environment monitoring and controlling in industrial and commercial buildings. These transmitters can be used for: |
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Humidity and temperature monitoring of supply, exhaust and return air (H2, duct mount) |
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Humidity and temperature monitoring in critical environment such as outside air (H3, outside mount) |
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Other applications of immersion humidity and temperature monitoring (H4, separate probe) |
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| Specifications |
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| Relative Humidity |
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Sensor |
: Digital polymer |
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Range |
: 0~100%RH |
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Output |
: 4~20mA(2 wires), 0~10VDC(3 wires), RS485 |
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Accuracy |
: 2,3,4.5%RH(25°C,20~80%RH) |
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Hysteresis |
: <±1%RH |
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Response time |
<10s(25°C,in slow air) |
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Drift |
: <±0.5%RH/year |
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| Temperature |
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Sensor |
: Solid state band gap, RTD or thermistor |
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Range |
: 0~50°C,0~100°C, -40~60, or others (transmitter) |
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Output |
: 4~20mA(2 wires) , 0~10VDC(3 wires) , RS485, or
RTD, thermistor |
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Accuracy |
: see model table |
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Power |
: Current 7.5~36VDC, Voltage & Other 15~35VAC/DC |
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Output Load |
: <600 ohm (current), >2Kohm (voltage) |
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Temperature Limit |
: -40~85°C, 0~95%RH (Non condensing) |
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Storage Temperature |
: -40~80°C |
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Housing |
: Fireproof ABS Enclosure, SS probe, SS mesh filter or
sintered filter |
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Protection |
: IP65 |
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