Oldham MX 43, Руководство пользователя

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20 MX43
User
manual
Icon Function
 Orange indicator of high-range excess (OVS: overscale, high-range excess). This
value is adjustable up to 110% of the range.
- Off: The measurement is lower than the OVS value programmed.
- Lit: The measurement is higher than the OVS value programmed. The alarm
relays are activated in accordance with the program. In parallel, the display
indicates « > ».
OVS resetting is done manually and is only possible if the value measured drops
below the programmed value.
Management of « Clear doubt »
The
Clear doubt alarm
is only applicable to the detection of explosive gases in a
range of 0-100%LEL, and is subject to the decision of the operator. Upon the
detection of a concentration of gas higher than 100% LEL, the LCD indicates a
measurement blocked at 100% LEL and the message > 100% LEL. The message
Strong concentaration Resetting by a person authorized in the maintenance menu
is displayed. The OVS and FAILURE indicators are activated. The alarm can only
be deactivated by stopping the detector via the maintenance menu once the gas
level decreases below this limit.
ALARM 3
ALARM 2
ALARM 1
Red indicators of alarm status:
- Off: Measurement lower than the threshold defined.
- Fixed light: At least one of the gas detectors has an active alarm. The release is
programmed in automatic mode or has already been requested by pressing the
Alarm reset
key on the front face.
- Blinking light: At least one of the gas detectors has an active alarm. The release
is programmed in manual mode.
The alarm relays are activated in accordance with the programming.
 Orange indicator of low- range excess (UDS: Under scale, low-range excess). This
value is adjustable from 0-10% of the range.
- Off: The measurement is higher than the UDS value programmed.
- Lit: The measurement is lower than the UDS value programmed. The alarms of
the relays are activated in accordance with the programming. In parallel, the
display indicates « < ».
UDS resetting is automatic once the failure disappears.
FAULT Orange failure indicator
- Off: No failing module or detector.
- Fixed light: Communication problem with one of the modules or invalid detector
measurement, that is to say either below -10% of the range or above 110% of
the range.
- Blinking light: Central unit in
maintenance
mode (test, calibration).
The Failure reset is automatic once the failure disappears.
POWER Green start/stop indicator for the detectors/modules of the zone.
- Off: All the detectors of the zone are stopped.
- Fixed light: At least one of the detectors of the zone is working.
- Blinking: The information details of one of the detectors/modules of the zone are
actually displayed on the LCD screen.
Flash and siren (D and E)
Siren (Figure 11, D)
Located in the upper portion of the box, the siren is optionally available solely
in the wall-mounted version. It is always discontinuous and is configured via
the COM43 application.