HygroFlex3 - HF3 - HVAC transmitter

R-Type / S-Type
Measures relative humidity and temperature and calculates the dew/frost point in offices and rooms where good looks play a role.

W-Type / D-Type
Measures relative humidity and temperature and calculates the dew/frost point in HVAC applications focused on relability and repeatability.


• Accuracy: ±2 %rh / ±0.3 K at 23°C ±5 K
• Temperature limit at probe: -40…60 °C / 0…100 %rh
• Range of application electronics: -40…60 °C / 0…100 %rh, -10…60 °C with LCD
• Service interface
• Adjusted at 23 °C and 10, 35, 80 %rh

Accuracy at 23 ±5 °C ±2.0 %rh / ±1.0 %rh (Type R), ±0.3 K / ±0.2 K (Type R)
Probe type Integrated
Operating range -40…60 °C / -10…60 °C (Models with display) 0…100 %rh, non-condensing
Measuring range with integrated probe -40…60 °C / 0…100 %rh
Power consumption 15…40 VDC or 12…28 VAC/ <100 mA
Probe protection Polycarbonate plastic cage, white
Filter cartridge Polyethylene dust filter, gray, 20 um
Response time t 63 <12 s for 63% of a 35> 80% (1 m / sec air flow at the sensor)
Allowed wind speed 20 m/s, with filter
Psychrometric calculations Dew or frost point
Backlight with Backlight
Display type Optional graphics display. Presentation configurable.
Measurement interval typically 1 second (without calculations)
Reproducibility Airchip <0.02 %rh / 0.01 K
Alarm indicators Yes
Exploitation software ROTRONIC HW4
Trend indicator Yes, for models with display
Probe adjustment by software Yes, with service cable
Remote control functions Via HygroPalm and service cable
Software Update With internet and HW4 software
User information from Software HW4 (devicemanager)
Data processing via HW4 with interface cables
Device Protection by password Yes
Analogue outputs scaleable by the user Yes
Analog output signal (standard) 0…20 mA, 4… 20 mA; 0… 1 V, 0… 5 V, 0… 10 V
Change of output signal w/o adjustment Yes
Digital output signal (standard) UART
Min. / max. load voltage / current signal V min = 10 V + (0.02 x Load*) * = Resistance in ohms
Service Information Calibration interval
Type of output signals 2
Enclosure material ABS
Fire protection class Complies UL94-HB
IP protection rating HF3x-S/ HF3x-R: IP20
HF3x-W/ HF3x-D: IP65
Max. cable length Up to 5 m with passive cable. Up to 100 m with active cable.
Probe material Polycarbonate
Service Interface Mini USB (UART)
FDA/GAMP compatibility FDA 21 CFR Part 11 and GAMP compatible
Dimensions Wall: ø 82 x 43, probe length 100 mm Duct: ø 82 x 43, probe length 207 mm Room: 82 x 82 x 26 mm

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+1 631 427-3898

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