User Manual

E-M-HF4-V1_22
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
HygroFlex HF4 Humidity Temperature
Transmitters: User Guide
Instruction Manual
Document Type
Page
26 of 29
Document title
© 2009-2011; Rotronic AG E-M-HF4-V1_22
Start-up time and data refresh rate
HF42
HF43
HF45
Start-up time
3.4s (typical)
1.9s (typical)
1.9s (typical)
Data refresh rate
3.4s (typical)
1.7s (typical)
1.7s (typical)
Configurable analog outputs
HF42
HF43
Output 1
Can be made to correspond to any parameter
Factory default parameter
Relative humidity or dew / frost point
Factory default scale
As per ordering code
Output 2
Can be made to correspond to any parameter
Factory default parameter
Temperature
Factory default scale
As per ordering code
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 kΩ (0…1 V output)
5 kΩ (0…5 V output)
10 kΩ (0…10 V output)
0 Ω (current output)
Digital interface
HF45
Interface type
RS-485, USB and RS-485 or Ethernet (TCP/IP) wired or wireless and RS-485
Service connector
HF42
HF43
HF45
Interface type
UART(Universal Asynchronous Receiver Transmitter)
Maximum service cable length
5 m (16.4 ft)
General specifications
HF42
HF43
HF45
Optional display
LC, 1 or 2 decimals
resolution, no backlight,
trend and alarm
indication
LC, 1 or 2 decimals resolution, backlight, trend and
alarm indication
Probe material
Polycarbonate
Probe dust filter material
Polyethylene
Housing material
ABS
Housing protection grade
IP 65 (except HF45 – USB or Ethernet)
Physical dimensions
See Models
Weight
250 g (8.8 oz)
250 g (8.8 oz)