ROTRONIC HF3 - Manual (Page 24)

E-M-HF3-V1_22
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
HygroFlex HF3 Transmitters and Thermo-
hygrostats: User Guide Instruction Manual
Document Type
Page 24 of 27
Document title
© 2009-2011; Rotronic AG E-M-HF3-V1_22
Configurable analog outputs HF32 HF33
Output 1 Can be made to correspond to any parameter
Factory default parameter Relative humidity or dew / frost point
Factory default scale 0…100 %RH or -50…50 °C DP or -50…100 °F DP
Output 2 Can be made to correspond to any parameter
Factory default parameter Temperature
Factory default scale 0…50 °C or 0… 100 °F
Output 1 and Output 2
Signal type 4…20 mA
0…20 mA
4… 20 mA
0… 1 V
0… 5 V
0… 10 V
(user configurable)
User configurable scaling limits - 999.99 … 9999.99 engineering units
Maximum offset at bottom of
signal range
no offset
0…1V signal range : 3 mV
0…5 V signal range : 50mV
0…10 V signal range : 90mV
0…20 mA signal range : 4uA
4…20 mA signal range : no offset
Short circuit tolerant Yes
Maximum external load 500 Ω 500 Ω (current output)
Minimum external load 0 Ω
1 k Ω (0…1 V output)
5 kΩ (0…5 V output)
10 kΩ (0…10 V output)
0 Ω (current output)
Configurable relay outputs HF34
Relay 1 Can be made to correspond to any parameter
Factory default parameter Relative humidity or dew / frost point
Factory default set-point scale 0…100 %RH or -50…50 °C DP or -50…100 °F DP
Relay 2 Can be made to correspond to any parameter
Factory default parameter Temperature
Factory default set-point scale 0…50 °C or 0… 100 °F
Relay 1 and Relay 2
Set point adjustment Surface mount potentiometer
User configurable set-point limits
Potentiometer minimum and maximum:
0…100 for humidity
-
100…200 for temperature or the dew / frost point
Energized relay indication LED
Relay type SPDT (single pole double throw)
Maximum switching voltage 250 VAC 1)
Maximum switching current 6 A (AC) 1)
1) Resistive load
Digital interface (service connector) HF32 HF33 HF34
Interface type UART (Universal Asynchronous Receiver Transmitter)
Maximum service cable length 5 m (16.4 ft)