Device Type

HF32 2-wire; HF33 3/4-wires

Integrated sensors

Yes

Humidity sensor

ROTRONIC Hygromer® IN-1

Temperature sensor

Pt100 1/3 Class B

Accuracy at 23 ±5 °C

±2.0 %rh / 0.3 K (±1.0 %rh / 0.2 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)

Graphic LCD (HF32S: no backlight) Parameters freely configurable.

Alarm functions (programmable)

Open or shorted sensor

Output signals

Freely scalable by user 0-1V, 0-5V, 0-10V, 0-20 mA & 4-20 mA

Change in signal type

HF33 only

Power supply

HF32: 10…28 VDC: 10 V + (0.02 x load)  HF33: 15…40 VDC/12…28 VAC

Power consumption

HF32: max 40 mA, other models < 100 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

20m/s at probe

Adjustments

Via ROTRONIC accessories Humidity: multi point; temperature: 2 points

Hygro- /Thermostat

2 Relays, HF34 only

Data logging 

Internal, 2000 data point memory

Dewpoint /frostpoint 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, 2007/108/EG

Audit trail, Electronic Records

FDA CFR21 Part 11 and GAMP compliant