BATTERY |
| 4.6.6 BATTERY FAILURE |
| When the battery has insufficient charge to operate the | |
FAIL |
| instrument, “BATTERY FAIL” is displayed. The visual |
|
| alarm will be activated and the instrument will emit a |
|
| short beep once every second for approximately 30 |
|
| seconds after which the instrument will turn itself off. |
|
| Recharge or replace the battery (See Section 8.2). |
| 4.6.7 FAULT INDICATION | |
| The ATX612 will emit a short beep once a second if a | |
| newly installed sensor does not agree with the previous | |
| sensor type for that position. The corresponding display | |
| position will be blank. This fault indication also occurs | |
| when a sensor becomes disconnected or a combustible | |
| sensor fault is detected during normal operation. Installed | |
| sensor types are accepted and displayed only after a | |
| successful calibration has been completed. | |
| The sampling pump system is equipped with a low flow | |
| detection alarm. A low flow alarm condition will occur if | |
PUMP | ||
the dust filter/water stop becomes clogged or the sample | ||
line becomes blocked in any way. The instrument will | ||
FAULT | sound a continuous tone, the red alarm light bar will flash | |
| and the display will read PUMP FAULT. If this should | |
| occur, replace the dust filter/water stop immediately (See | |
| Section 9). The unit will not operate and a low flow alarm | |
| condition will remain if the dust filter/water stop is | |
| removed from the instrument. The PUMP FAULT alarm | |
| will be reset once the obstruction has been cleared from | |
| the sample line. |
5. CALIBRATING THE ATX612
The ATX612 is a potential life saving device. Recognizing this fact, Industrial Scientific Corporation recommends that a functional (“bump”) test be performed on every instrument prior to each use. A functional test is defined as a brief exposure of the monitor to a known concentration of gas(es) for the purpose of verifying sensor and alarm operation. It is not intended to be a measure of the accuracy of the instrument.
Industrial Scientific also recommends that a full instrument calibration be performed using a certified concentration(s) of calibration gas(es) monthly to ensure maximum accuracy.
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If an instrument fails to operate properly following any functional “bump” test, a full instrument calibration should be performed prior to use.
Calibration is most accurate when the instrument has been in a stable temperature environment for at least one hour prior to calibrating.
NOTE: Instrument zero and oxygen span calibration should be performed in clean air containing 20.95% (21%) oxygen. If you are measuring a known combustible gas, use a known concentration of that gas for calibration. For general combustible gas measurement, Industrial Scientific Corporation recommends calibrating to pentane in the
The ATX612 utilizes a
To calibrate the ATX612:
•From the normal READING mode, press the MODE switch twice to access the ZERO operating mode.
•Press the (E) key to start the instrument zeroing process. The instrument display will indicate ZEROING.
•When zeroing is complete the instrument display will indicate O2 CAL and will show the current full span value of the oxygen sensor. The oxygen sensor will be calibrated to 21.0 in approximately 30 seconds.
Instrument zeroing and oxygen calibration may be aborted at any time by pressing the MODE switch.
NOTE: Zeroing the instrument in clean air is preferred, provided that there is no trace of toxic or combustible gas. If the air purity is uncertain, use a cylinder of zero grade air to zero the instrument and span the oxygen sensor.
•At the completion of the oxygen sensor calibration, the instrument will emit a short beep and the display will indicate GO CAL. The message PRESS (E) to CAL will scroll across the bottom of the display. Press (E) to continue calibrating the remaining sensors. If you ignore this message the instrument will return to the normal operating mode in approximately eight seconds.
Z E R O
P R E S S
Z E R O I N G
2 1 . 0
02 CAL
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