Vaisala HMP228 User Manual
Page 53
HMP228 Transmitters
M210282en-A
Appendix 1: Serial commands
47
For example, water activity is selected to be output on channel 1 and tem-
perature on channel 2; the temperature range is scaled to 0...100
°
C:
>ASEL RH T
Ch1
(aw) lo 0.000
?
Ch1
(aw) hi 1.000
?
Ch2
(T ) lo -40.000 'C
? 0
Ch2
(T ) hi +160.000 'C
? 100
When the ASEL command is given on its own, the transmitter outputs its cur-
rent settings:
>ASEL
Ch1
(aw) lo
0.000
Ch1
(aw) hi
1.000
Ch2
(T ) lo
-40.000 'C
Ch2
(T ) hi
+160.000 'C
The outputs and their scales can also be given directly with the ASEL com-
mand.
ASEL xxx yyy aaa.a bbb.b ccc.c ddd.d
xxx
=
channel 1's quantity
yyy
=
channel 2's quantity
aaa.a
=
lower limit of channel 1
bbb.b
=
upper limit of channel 1
ccc.c
=
lower limit of channel 2
ddd.d
=
upper limit of channel 2
ASCL
Scaling the analogue outputs
Disconnect the security lock jumper!
ASCL
Scales the outputs selected on channels 1 and 2.
For example, scaling water activity on the range of 0...1.00 and temperature -
40...+160 °C:
>ASCL
Ch1
(aw) lo
0.000
?
Ch1
(aw) hi
1.000
?
Ch2
(T ) lo
0.000 'C
? -40
Ch2
(T ) hi
100.000 'C
? 160