©Copyright MAC Instruments 2005. All Rights Reserved. MAC155 Rev. 12
Pg 67
MANUAL CALIBRATION CHECK MODE
Figure 50 – Force Probe to Verify Calibration
This mode causes the calibrator section of the MAC155 Probe to generate a
calibration gas stream of 40% of full scale for a period of 11 minutes, then
generate a calibration gas stream of 80% of full scale for a period of 11 minutes.
At the end of that period the MAC155 Probe returns to the normal mode. The
calibration of the probe is left unchanged.
MANUAL PROBE MAINTENANCE MODE
Figure 51 – Force Probe Maintenance Mode
When this mode is manually activated the Filter Blow Back Solenoid will be
energized providing compressed air to clear the flow provided this option is
installed. Enabling this command will also activate the in–maintenance relay.
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