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Dwyer HHT-EU | Explosion-Proof Humidity Transmitter | 4-20 mA, ±2% RH
The Dwyer HHT-EU is an explosion-proof humidity transmitter for hazardous areas, giving a single 4-20 mA humidity output with ±2% accuracy from 10 to 90% RH. It is powered from 16.5 to 28 VDC and housed in a NEMA 4X (IP66) aluminium enclosure.
- Single 4-20 mA humidity output
- FM explosion-proof for Class I Div. 1 Groups B, C, D
- ±2% from 10 to 90% RH
- Capacitance polymer sensor, 15 s response
- NEMA 4X (IP66) aluminium housing
- Specifications
- Features
- Downloads
| Part Number | HHT-EU |
| Brand | Dwyer |
| Protection | Explosion-proof |
| Measures | Relative humidity |
| Output | 4-20 mA (humidity) |
| Power | 16.5 to 28 VDC |
| RH Range | 0 to 100% RH |
| Accuracy | ±2% (10 to 90% RH) |
| Sensor | Capacitance polymer |
| Response Time | 15 s |
| Enclosure | Aluminium, NEMA 4X (IP66) |
| Hazardous Area Rating | FM explosion-proof Class I Div. 1 Groups B, C, D; Class II Div. 1 Groups E, F, G; Class III Div. 1 |
| Operating Temperature | -40 to 140°F (-40 to 60°C) |
| Approvals | FM, CE |
- Explosion-proof and fundamentally safe models with FM approval.
- LCD option integrated.
- Two-way output models for relative humidity and temperature.
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