MSA PrimaX - Page 25

If a COMB or a TOX sensor is connected this menu shows the response time [as calculated during zero span
calibration].
If an OX/TOX sensor is connected this menu shows the measured mV value.
If a COMB sensor is connected this menu shows the detector [U
D
], compensator [U
K
] and differential voltage
[U
X
] in mV.
1. Go through the information with the ENTER button.
[M-10] - Range Selection
WARNING!
Test gas concentration has to be checked and device has to be calibrated if the range is changed.
Failure to follow this warning can result in serious personal injury or death.
This menu allows to set up the optional measuring ranges for connected OX/TOX sensors.
1. Press ENTER and select menu 10.
2. Press ENTER button.
3. Enter password [→chapter4.5 Password].
4. Press UP or DOWN button to select the range and/or the measuring unit [TOX: ppm, mg/m
3
;
COMB: LEL, UEG].
5. Press ENTER button.
OK is displayed.
The calibration is set to invalid and service current is supplied until recalibrated.
[M-14] - Deadbands
Menu for suppressing negative values and enable/disable the deadband (zero window).
1. Press ENTER and select menu 14.
2. Press ENTER button.
3. Enter password [→ chapter 4.5 ].
4. Setting for suppressing negative values.
5. Set ON or OFF with the UP or DOWN button.
6. Press ENTER button.
7. Setting for zero window appears (values within -2% – 2% of range are set to zero/4 mA).
8. Set ON or OFF with the UP or DOWN button.
9. Press ENTER button.
[M-00] - Reset Alarm
Menu to reset a LOC of combustible sensor or an alarm. It appears only in the menu if there is a latched LOC
or alarm.
NOTE: Before a reset of an over range (LOC) indication is done it shall be verified that the gas concentration
is below full scale.
1. Press ENTER and select menu 0.
2. Press ENTER button.
3. Enter password [→chapter4.5 Password].
Success message confirms that latched alarm is reset.
25 PrimaX GB
4 Operation