Device Type
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HF32 2-wire; HF33 3/4-wires
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Integrated sensors
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Yes
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Humidity sensor
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ROTRONIC Hygromer® IN-1
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Temperature sensor
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Pt100 1/3 Class B
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Accuracy at 23 ±5 °C
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±2.0 %rh / 0.3 K (±1.0 %rh / 0.2 K Type R)
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Resolution AirChip3000
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<0.02 %rh / 0.01 K
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Long-term stability humidity sensor
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<1 %rh / year
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Response time τ 63
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<10 s
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Measurement range
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-40…60°C / 0-100 %rh
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Electronics operating range
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-40…60°C / 0-100 %rh (-10…60°C with LCD)
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Display (Space version only)
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Graphic LCD (HF32S: no backlight) Parameters freely configurable.
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Alarm functions (programmable)
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Open or shorted sensor
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Output signals
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Freely scalable by user 0-1V, 0-5V, 0-10V, 0-20 mA & 4-20 mA
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Change in signal type
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HF33 only
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Power supply
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HF32: 10...28 VDC: 10 V + (0.02 x load) HF33: 15…40 VDC/12…28 VAC
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Power consumption
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HF32: max 40 mA, other models < 100 mA
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Circuit type
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HF32: 2 x 2 wires, HF33: 3/4 wires
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Min. / Max. load
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V-signal:≥1 kΩ/V / mA signal: ≤ 500 Ω
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Firmware update
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Via service connector, requires HW4 software
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Sensor diagnostics (Drift, state)
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Programmable.Default: off
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Sensor protection
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Polyethylene filter
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Max. air velocity
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20m/s at probe
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Adjustments
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Via ROTRONIC accessories Humidity: multi point; temperature: 2 points
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Hygro- /Thermostat
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2 Relays, HF34 only
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Data logging
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Internal, 2000 data point memory
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Dewpoint /frostpoint calculation
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Yes
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PC interface (service connector)
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With ROTRONIC interface cable, HW4 compatible
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Housing material / weight
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ABS / approx. 120g
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Cable connections
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1 x M16x1.5, on terminals
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Standards
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CE- compliant, 2007/108/EG
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Audit trail, Electronic Records
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FDA CFR21 Part 11 and GAMP compliant
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