24
Dräger X-am 2500
Operation
If an O
2
sensor is fitted and this sensor measures an O
2
concentration of below 12 vol.-%, an error is indicated with
»
« on the ex-channel instead of a measured value if the
measured value is below the pre-alarm threshold.
After the measuring range of the TOX measuring channels has
been exceeded temporarily (up to one hour), checking the
measuring channels is not necessary.
4.6
Identifying alarms
An alarm is displayed visually, audibly and through vibration in a
specific pattern.
4.6.1
Concentration pre-alarm A1
Intermittent alarm:
Alternating display of
A1
and measured value.
Not for O
2
!
The pre-alarm A1 is not latching and stops when the concentration
has dropped below the alarm threshold A1.
In case of A1, a single tone is audible and the alarm LED flashes.
In case of A2, a double tone is audible and the alarm LED flashes
twice.
Acknowledge pre-alarm: Press the OK key. Only the audible alarm
and the vibration alarm are switched off.
4.6.2
Concentration main alarm A2
Intermittent alarm:
Alternating display of
A2
and measured value.
For O
2
:
A1
= lack of oxygen
A2
= excess oxygen
After leaving the area, when the concentration has dropped below the
alarm threshold:
Press the OK key. The alarm messages are switched off.
If the measuring range is exceeded significantly at the CatEx channel
(very high concentration of flammable materials), a blocking alarm is
triggered. This CatEx blocking alarm can be manually acknowledged
by switching the instrument off and on in fresh air.
NOTICE
Special states in which there is no measuring operation (quick
menu, calibration menu, warm-up of sensors, password
input) are indicated by a visual signal (slow flashing of the
alarm LED
).
NOTICE
Fast temperature and humidity changes influence the
measured signal. If temperature and humidity jumps are
anticipated, Dräger recommends using a humidity pre-tube
for the measurement.
WARNING
If the DrägerSensor CatEx 125 PR is used in the gas detector,
a zero point and span calibration must be carried out after
experiencing an impact load that results in a non-zero display
when exposed to fresh air. This warning does not apply if the
DrägerSensor CatEx 125 PR Gas is used.
NOTICE
At low temperatures the legibility of the display can be
improved by switching on the backlight.
i
i
i
i
!
i
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WARNING
Risk of fatal injury! Leave the area immediately. A main alarm
is self-retaining and cannot be acknowledged or cancelled.
!
Содержание X-AM 2500
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Страница 155: ...Dr ger X am 2500 155 1 5 168 Dr ger Dr ger Dr ger Dr ger Dr ger Dr ger 1 1 www draeger com ifu i i i i...
Страница 160: ...160 Dr ger X am 2500 A1 A2 TWA 1 STEL 1 H2S CO 2 OK 4 3 OK 3 2 1 4 4 1 2 3 1 Bump Test CatEx O2 21 5 i i...
Страница 185: ...Dr ger X am 2500 185 1 5 198 Dr ger Dr ger Dr ger Dr ger Dr ger Dr ger 1 1 www draeger com ifu i i i i...
Страница 191: ...Dr ger X am 2500 191 2 3 4 5 4 6 192 O2 O2 12 Vol Ex EC CatEx CatEx 12 Vol O2 CatEx CatEx 21 Vol O2 LED Dr ger i i i i...
Страница 215: ...Dr ger X am 2500 215 1 227 5 Dr ger Dr ger Dr ger Dr ger Dr ger Dr ger 1 1 www draeger com ifu i i i i...
Страница 223: ...Dr ger X am 2500 223 4 6 6 Dr ger 4 7 4 7 1 OK 3 OK TWA STEV 10 4 7 2 4 8 Dr ger CC Vision OK 60 1 2 3 4 5...
Страница 230: ...230 Dr ger X am 2500 1 245 5 Dr ger Dr ger Dr ger Dr ger 1 1 www draeger com ifu i i i i...
Страница 236: ...236 Dr ger X am 2500 4 5 238 4 6 12 Vol EC 1 CatEx CatEx 12 Vol CatEx CatEx 12 Vol 21 Vol Dr ger i i i i...
Страница 237: ...Dr ger X am 2500 237 CatEx 125 PR Dr gerSensor CatEx 125 PR Gas...
Страница 238: ...238 Dr ger X am 2500 4 6 4 6 1 A1 A1 O2 A1 A1 A1 A2 OK 4 6 2 A2 A2 O2 A1 A2 OK CatEx CatEx i i...
Страница 239: ...Dr ger X am 2500 239 4 6 3 STEL TWA A2 STEL TWA STEL TWA 4 6 4 OK 20 4 6 5 10 4 6 6 Dr ger STEL 1 i i...
Страница 240: ...240 Dr ger X am 2500 4 7 4 7 1 OK 3 OK TWA STEL 10 4 7 2 1 4 8 3 PC Dr ger CC Vision OK 60 1 2 3 4 5...
Страница 245: ...Dr ger X am 2500 245 5 5 1 1 1 EN 60079 29 2 EN 45544 4 4 Ex O2 H2S SO2 NO2 CO 6 O2 5 2 6 83 18 639 3 7 Dr ger Dr ger...
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