25
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ACCESS TO MAINTENANCE MENUS
With the BM25 in operation, menus can be accessed in the following manner:
•
Scroll to parameters with a central key until a request for a standard access code 0018 is
displayed
•
Scroll to each digit with the “Lighting” button, choose the figure with the
“Acknowledge” button and validate access code with the “Enter” key.
The list of available menus is then displayed:
-
programming
-
calibration
-
auto-zero
-
date and time
-
exit
1.1.
Channel programming menu
This is used to:
•
Select the channel to be programmed
•
Switch the selected channel On and Off
•
Inform the operator of the type of sensor for the measuring range
•
In the case of a explosive sensor, select the type of reference gas from 31 pre-selected
gases or enter the coefficient of a 32
nd
gas and program instantaneous thresholds.
•
When an oxygen sensor is used, to program the “min” and “max” alarm thresholds if this
option was selected.
•
When a toxic gas sensor is used, to program instantaneous thresholds.
•
When a catharometric sensor is used, to program low instantaneous thresholds.
(1) List of pre-programmed “explo" gases and coefficients
The explosive sensor of the BM25 is of thermo catalytic “Pont de Wheatstone” type. The
coefficients are given for information in relation to a CH
4
scale with LEL = 5.0% (the
BM25 already takes them automatically into consideration during the calibrations / range
changes)
Содержание BM25
Страница 1: ...BM25 O OP PE ER RA AT TI IN NG G M MA AN NU UA AL L REF NPB25GB REV E...
Страница 42: ......
