ENMET OX-2000 - Manual (Page 10)

ENMET Corporation TX2000 / OX2000
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3.5 Alarms
3.5.1 Gas Alarm
The “gas” audio and visual alarm is triggered when at least one of the two preprogrammed instantaneous thresholds
is exceeded.
TX2000 Toxic Version
• The adjustable threshold: (threshold 1): can be altered by using the maintenance / programming mode. See
section 4 for entrance to maintenance menus.
• The fixed threshold: (threshold 2): programmed by ENMET when the instrument is initialized and cannot be
altered by the user, the threshold is 60 % of scale.
OX2000 Oxygen Version
• The abundance threshold: adjustable up to 25% oxygen.
• The deficiency threshold: adjustable from 21% to 0% oxygen.
C AUTION : The OX2000 thresholds are adjustable to exceed safe levels, 17% deficiency if adjusted beyond these
levels, use instruments with caution. Failure to do so may result in injury or death.
When at least one of the two thresholds is exceeded, the TX2000 / OX2000 delivers a “pulsed” audio alarm and
simultaneously the red visual alarm flashes.
An “alarm” pictogram flashes simultaneously under the current measurement value displayed.
Table 1: “Pulsed” Audio and Visual Alarms
Display Cause Remedy
XXPPM
Alarm pictogram
Instantaneous threshold exceeded Alarm can be cleared manually.
battery pictogram The battery is beginning to discharge Audio and visual alarms can be
cleared Change batteries
3.5.2 Fault Alarm
The faults can be classed into 2 types:
• Those relating to the sensor (out-of-range, sensor worn out, unsuccessful calibration etc...).
• Those relating to the instrument itself: worn out batteries, OX / TX2000 fault. They cause the following
message to appear:
The various faults generate a “continuous” visual and audio alarm that cannot be cleared.
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