Vaisala PTU300 Betriebsanweisung Seite 119

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Seitenansicht 118
Chapter 4 ________________________________________________________________ Operation
VAISALA ______________________________________________________________________ 117
Example:
>asel rh t p <cr>
Ch1 RH low : 0.00 %RH ?
Ch1 RH high : 100.00 %RH ?
Ch2 T low : -40.00 'C ?
Ch2 T high : 60.00 'C ?
Ch3 P low : 500.00 hPa ?
Ch3 P high : 1100.00 hPa ?
>
Analog Output Tests
Use the display/keypad for testing the operation of the analog outputs by
forcing the outputs to known values. Measure then the outputs with a
current/voltage meter.
1. Press any of the arrow buttons to open the MAIN MENU.
2. Select System and press the right arrow button.
3. Select Diagnostics and press the right arrow button.
4. Select Analog output tests and press the right arrow button.
5. Select one of the testing options Force 0%/50%/100% of scale.
Press the TEST key. All outputs are tested simultaneously. The
actual output value depends on the selected range.
6. Press the OK key to stop testing. Then press the EXIT key to
return to the basic display.
ITEST
Use the serial line to test the operation of the analog outputs. Use the
command ITEST to force the analog outputs to entered values. The set
values remain valid until you enter the command ITEST without
parameters or RESET the transmitter.
ITEST [aa.aaa bb.bbb]
where
aa.aaa
= Current or voltage value to be set for channel 1 (mA or V)
bb.bbb
= Current or voltage value to be set for channel 2 (mA or V)
Example:
>itest 20 5
Ch1 (Td ) : * 20.000 mA H'672A
Ch2 (T ) : * 5.000 mA H'34F9
>itest
Ch1 (Td ) : -23.204 'C 16.238 mA H'FFFE
Ch2 (T ) : 22.889 'C 8.573 mA H'5950
>
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