COSA Xentaur Hygrocontrol Type 83 - Manual (Page 5)

HYGROCONTROL Manual for Type 83 Page - 4 -
4. HART
Following universal commands are available:
0 Read unique identifier
1 Read primary variable
3 Read current and four variables
12 Read message
13 Read tag, description, date
14 Read primary variable sensor information
15 Read output information
16 Read finally assembly number
17 Write message
18 Write tag, description, date
19 Write finally assembly number
34 Write damping value
35 Write range values
44 Write primary variable units
49 Write primary variable sensor serial number
59 Write numbers of response preambles
109 Burst mode control
Sending following user messages will not cause their storage but
result in starting the functions below:
%Hxxx starts a humidity calibration with xxx * 0,1 %RH
%Txxxx will do a temperature adjustment to xxxx * 0,01 °C
%Y positive confirmation of humidity calibration
%N negative confirmation of humidity calibration
%F end of calibration and show of original users message
Command 3 results in the output of measurement values as follows:
primary variable Humidity in %RH shown unit = %
secondary variable Temperature in °C
tertiary variable Humidity digits shown unit = none
quaternary variable Reference digits shown unit = none
5. Operation
HYGROCONTROL Humidity and Temperature Meters detect relative
Humidity and Temperature. For this purpose the probes are
equipped with a capacity type humidity sensor of very small mass.
The temperature detection is done by a Pt-1000 type RTD , which is
placed very close to the humidity sensor to avoid differences in
temperature between the two sensors.
Incoming sensor signals are temperature compensated and
transferred into linearised analogue or digital outputs by digital