AUTO-ZERO SELECT
To auto zero the AMS810 remove the tubing from the pressure
ports (to remove the normal pressure source). Make sure that the
pressure ports are sheltered from any drafts, including the techni-
cian’s breath. Ideally the two ports should be connected together
with a short piece of tubing. Turning on switch 7 starts the auto-
zero process. Switches 1 through 6 may be in any allowed configu-
ration. The LED will blink at a fast rate and the output will be forced
to zero (4mA or 0V) while the auto-zero is being performed. When
the LED blinks at a slow rate, turn off switch 7 and reconnect the
pressure source.
SWITCH 8
Switch 8 is reserved for factory use, leave in the off posiiton.
TROUBLESHOOTING
PROBLEMS:
POSSIBLE SOLUTIONS:
LED does not light
- Check power connections for proper power
LED is blinking fast
- The unit may be performing an auto-zero. Wait 10 seconds and check again.
(
1
/
2
second on,
1
/
2
second off)
- The dip switches are in an unsupported configuration, check the dip switch settings, both pressure
and output, and change them to ranges desired
Output stuck (high or low)
- Remove pressure from ports and perform auto-zero procedure
Output not tracking pressure properly
- Check dip switches for proper pressure range selection
- Check dip switches for proper output range selection
LED OPERATION
LED off
No Power
LED Blinking
1
/
2
sec on,
1
/
2
sec off
Auto-zero or dip switch in undefined configuration
LED on
Normal operation
LED Blinking
1
/
2
sec on, 4 sec off
Auto-zero complete
Auto-Zero
