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Measures relative humidity and temperature, and calculates dew/frost point for HVAC applications, with a focus on reliability and repeatability. Ideal for use in offices and other indoor environments.
Measures relative humidity and temperature, and calculates dew/frost point for HVAC applications, with a focus on reliability and repeatability. Ideal for use in offices and other indoor environments.
The HygroFlex3 series is perfect for applications where precise humidity and temperature measurement is critical. These transmitters are versatile, suitable for HVAC systems, greenhouses, museums, warehouses, libraries, train stations, and climate control in office buildings. With exceptional long-term sensor stability and built-in auto-diagnostics, they offer reliable, low-maintenance operation that saves both time and money.
Features
| Integrated sensors | Yes |
| Humidity sensor | ROTRONIC Hygromer® IN-1 |
| Temperature sensor | Pt100 Class A |
| Accuracy at 23 ±5 °C | ±2.0 %rh / 0.3 K (±1.0 %rh / 0.1 K Type R) |
| Resolution AirChip3000 | <0.02 %rh / 0.01 K |
| Long-term stability humidity sensor | <1 %rh / year |
| Response time τ 63 | <10 s |
| Measurement range | -40…60 °C / 0…100 %rh |
| Electronics operating range | -40…60 °C / 0…100 %rh (-10…60 °C with LCD) |
| Display (Space version only) (HF32S: no backlight) | Graphic LCD Parameters freely configurable |
| Alarm functions (programmable) | Open or shorted sensor |
| Output signals | Freely scalable by user 0...1 V, 0...5 V, 0...10 V, 0(4)...20 mA |
| Change in signal type | HF33 only |
| Power supply | HF32: 10...28 VDC: 10 V + (0.02 x load) | HF33: 18…40 VDC/13…28 VAC |
| Power consumption | HF32: max 40 mA, other models <150 mA |
| Circuit type | HF32: 2 x 2 wires, HF33: 3/4 wires |
| Min. / Max. load | V-signal:≥1 kΩ/V / mA signal: ≤ 500 Ω |
| Firmware update | Via service connector, requires HW4 software |
| Sensor diagnostics (Drift, state) | Programmable. Default: off |
| Sensor protection | Polyethylene filter |
| Max. air velocity | 20 m/s at probe |
| Adjustments | Via ROTRONIC accessories Humidity: multi point; 2 points |
| Data logging | Internal, 2000 data point memory |
| Dew point /Frost point calculation | Yes |
| PC interface (service connector) | With ROTRONIC interface cable, HW4 compatible |
| Housing material / weight | ABS / approx. 120g |
| Cable connections | 1 x M16x1.5, on terminals |
| Standards | CE-compliant, 2014/30/EU |
| Audit trail, Electronic Records | FDA CFR21 Part 11 and GAMP compliant |
| IP protection rating & fire protection class | IP65 / Corresponds to UL94-HB |
| Integrated sensors | Yes |
| Humidity sensor | ROTRONIC Hygromer® IN-1 |
| Temperature sensor | Pt100 Class A |
| Accuracy at 23 ±5 °C | ±2.0 %rh / 0.3 K (±1.0 %rh / 0.1 K Type R) |
| Resolution AirChip3000 | <0.02 %rh / 0.01 K |
| Long-term stability humidity sensor | <1 %rh / year |
| Response time τ 63 | <10 s |
| Measurement range | -40…60 °C / 0…100 %rh |
| Electronics operating range | -40…60 °C / 0…100 %rh (-10…60 °C with LCD) |
| Display (Space version only) (HF32S: no backlight) | Graphic LCD Parameters freely configurable |
| Alarm functions (programmable) | Open or shorted sensor |
| Output signals | Freely scalable by user 0...1 V, 0...5 V, 0...10 V, 0(4)...20 mA |
| Change in signal type | HF33 only |
| Power supply | HF32: 10...28 VDC: 10 V + (0.02 x load) | HF33: 18…40 VDC/13…28 VAC |
| Power consumption | HF32: max 40 mA, other models <150 mA |
| Circuit type | HF32: 2 x 2 wires, HF33: 3/4 wires |
| Min. / Max. load | V-signal:≥1 kΩ/V / mA signal: ≤ 500 Ω |
| Firmware update | Via service connector, requires HW4 software |
| Sensor diagnostics (Drift, state) | Programmable. Default: off |
| Sensor protection | Polyethylene filter |
| Max. air velocity | 20 m/s at probe |
| Adjustments | Via ROTRONIC accessories Humidity: multi point; 2 points |
| Data logging | Internal, 2000 data point memory |
| Dew point /Frost point calculation | Yes |
| PC interface (service connector) | With ROTRONIC interface cable, HW4 compatible |
| Housing material / weight | ABS / approx. 120g |
| Cable connections | 1 x M16x1.5, on terminals |
| Standards | CE-compliant, 2014/30/EU |
| Audit trail, Electronic Records | FDA CFR21 Part 11 and GAMP compliant |
| IP protection rating & fire protection class | IP65 / Corresponds to UL94-HB |
