Honeywell APT2000 Series User Manual page 28

Troubleshooting, Cleaning
Pressing CAL and entering mode code "0000" is
going to activate the cal info. Cal info shows the cur-
rent calibration data for approx. 20 sec. During cal
info the Transmitter is not in Hold state.
Pressing CAL and entering mode code "2222" is
going to activate the test mode. In the test mode you
can check the measuring equipment with a resistor.
Sensoface is disabled.
To do so, a comparison resistor is
looped through the sensor. The
comparison resistance value is indi-
cated in the main display in kW.
When the resistance value exceeds
2 kW, the display shows "– – – –".
R: e.g. 100 W
Pressing ENTER ends the test mode. The Transmit-
ter goes to Hold state.
Pressing CONF and entering mode code "0000" is
going to activate the error info. Error info shows the
most recent error message for approx. 20 sec. After
that the message will be deleted. During error info
the Transmitter is not in Hold state.
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Pressing ENTER in measuring mode displays the
loop current for a few seconds.
To check the connected peripherals (e.g. limit
switches, controllers), the loop current can be manu-
ally specified.
In the current source mode the loop
current no longer follows the mea-
sured value! It is manually speci-
fied.
Therefore, it must be ensured that
the connected devices (control
room, controllers, indicators) do not
interpret the current value as a
measured value!
Pressing CONF and entering mode code "5555" is
going to activate the current source mode. Specify
the loop current using ", Y and ENTER. The actu-
ally flowing loop current is shown in the lower dis-
play.
Pressing CONF exits the current source mode
again.
The manual instrument self-test is started by simulta-
neously pressing Y and ".
A display test is carried out, the software version is
displayed and the memory and measured-value
transmission are checked.