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Rotronic Hygro Flex 4 Transmitters For Humidity and Temperature

Transmitters For Humidity and Temperature
Hygro Flex 4

The new HygroFlex 4-series is the latest development in HVAC transmitters for relative humidity, temperature and dew point. Based on AirChip3000 technology, the instruments achieve a degree of accuracy not seen before.

In combination with advances in sensor technology and integration, the HygroFlex HF42-, HF43- and HF45- transmitters provide superb precision and state-of-the-art functionality, taking humidity, temperature and dew point measurements to a whole new level of performance and reliability (< 1 %rh / 0.2 K).

Practical display
• Display of the measured values on a clear, backlit graphic display with trend indicators
• Configuration by keypad possible

Tried-and-tested housing
• Robust industrial housing
• Wall or duct mount versions

• Two freely selectable and scalable analog outputs
• 2-wire and 3/4-wire systems available
• Optional digital outputs allow integration on a network via RS485, Ethernet and even wireless connection

Fast response and precision measurement
• Integrated probe
• By decoupling the Pt100 temperature sensor from the probe, thermal response is significantly improved
• Heat from the electronic components is not transmitted to the sensors, thereby improving the accuracy of the system

• Compensates humidity and temperature over 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

• Relative humidity, temperature and dew point measurement
• Outstanding accuracy and repeatability
• Hygromer® IN-1 humidity sensor
• Auto-diagnostics and automatic correction
• Freely selectable and scalable analog outputs
• Network compatibility with digital outputs

Integrated sensors Yes
Humidity sensor ROTRONIC Hygromer® IN-1
Temperature sensor Pt100 1/3 Class B
Accuracy at 23 ±5 °C ±1.0 %rh / 0.2 K
Resolution AirChip3000 <0.02 %rh / 0.01 K
Long-term stability humidity sensor <1 %rh / year
Response time t 63 <10 s
Initialization time Typical 3 seconds
Measurement range -50…100 °C / 0…100 %rh
Electronics operating range -40…60 °C / 0…100 %rh (-10…60 °C with LCD)
Display (optional)
(HF42: not illuminated)
Backlit graphic LCD
Parameters freely configurable
Alarm functions (programmable) Sensor interruption or short circuit
Output signals Freely scalable by user
0...1 V, 0...5 V, 0...10 V, 0(4)...20 mA
Digital outputs (optional) Ethernet (LAN, WLAN), USB, RS485
Change in signal type U/I HF43 only
Power supply HF42: 20...28 VDC (10 V+(0.02 x load)
HF43/HF45: 15…40 VDC/12…28 VAC
Power consumption HF42: max 40 mA, other models < 100 mA
LAN option <300 mA
Circuit type HF42: 2 x 2 wires, HF43: 3/4 wires
Min. / Max. load V-signal:≥1 kΩ/V / mA-signal: ≤ 500 Ω
Firmware update Possible by HW4 software
Sensor diagnostics (Drift, state) Programmable. Default: off
Sensor protection Polyethylene filter
Max. wind speed 20 m/s at probe
Adjustments By Keypad: 1 point, by ROTRONIC accessories: Humidity Multi point, Temperature 2 points
Data logging function internal, 2000 data point memory
Dewpoint /frostpoint calculation Yes
PC interface With ROTRONIC interface cable HW4 compatible
Data processing by HW4 Graphs, statistics, analyses, qualification etc.
Housing material / weight ABS / Approx. 220g
Cable connections 1 x M16x1.5, on terminals
Norms 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

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