The Rotronic HygroFlex3 measurement range is -40 to 140ºF (-40 to 60ºC) / 0 to 100%RH with the accuracy of ±2 %RH / 0.3ºC at 23±5ºC.
The HF3 transmitter is designed for fixed installation and it comes with an AirChip3000 chip inside the unit. The chip allows the instrument to achieve a degree of accuracy not seen before. The HF3 transmitter with the combination of advances in sensor technology and integration provides superb precision and state-of-the-art functionality, taking humidity, temperature and dew point measurement to a whole new level of performance and reliability (< 2 % rh / 0.3 K).
Highly versatile • One or two selectable and scalable analog outputs • Analog outputs assignable to relative humidity,temperature or dew point • 2-wire or 3/4-wire systems available • Available with two integrated relay contacts for use as a thermo-hygrostat
AirChip3000 • Compensates humidity and temperatureover 30,000 reference points • 2,000 data point memory • Dew/frost point calculation • Sensor auto-diagnostics and automatic correction • Active alarming and information • ASIC (Application Specific Integrated Circuit), micro-controller and EEPROM on one chip
Fast response and precision measurement • By decoupling the Pt100 temperature sensor from the probe, thermal response is significantly improved • Use of Pt100 1/3 Class B sensors for maximum accuracy
Specifications
HF32 2-wires
HF33 3/4-wires
HF34 Hygro-/Thermostat
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) (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: 15…40 VDC/12…28 VAC HF34: 8…40 VDC /6…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
20 m/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
IP protection rating & fire protection class
IP65 / Corresponds to UL94-HB
Outputsof the HygroFlex3
Dimensions
Ordering Codes
Notes:
• Output 1: relative humidity or dew point
• Output 2: temperature
• The dew / frost point range uses the same unit (C or F) as the temperature output. The factory default setting is frost point below freezing
• Custom range: be sure to clearly specify the desired range at the time of the order. When a special range has been ordered, the letters ST, XSC or S are used in columns 4, 6 or 7 in the above table. These generic codes will be replaced with a specific code only for quantity and repeat orders
• Use column 4 to specify the unit system (M or E) when temperature is not one of the analog outputs
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