TELEDYNE OLDHAM SIMTRONICS CTX 300, Руководство пользователя

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CTX 300
ANALOGIC GAS DETECTOR
USER MANUAL
NP300GB
Rev.O.0
13
5 Maintenance
The adjustment operations in this paragraph are reserved for authorized, trained
personnel because they may compromise detection reliability.
Gas detectors are safety devices. TELEDYNE OLDHAM SIMTRONICS recommends the regular
testing of fixed gas detection installations. This type of test consists of injecting the calibration gas
into the detector at a sufficient concentration to activate the pre-set alarms. It is to be understood
that this test is in no way a replacement for a detector calibration.
The frequency of gas tests depends on the industrial application where the detector is in use.
Frequent inspections should be made in the months following the commissioning of the installation,
and should then become more widely spaced provided that no significant deviation is observed.
If a detector should fail to react in contact with the gas, calibration is essential. The frequency of
calibrations shall be appropriate according to the results of the tests (humidity, temperature, dust,
etc.); however, it must not exceed one year.
The general manager should put safety procedures in place on-site. TELEDYNE OLDHAM
SIMTRONICS cannot be held responsible for their enforcement.
5.1 Calibration
5.1.1 Recommendations
Calibration consists of adjusting the zero of the clean air sensor and adjusting sensitivity with a
test gas. Adjustments are made at the sensor level.
Equipment needed to calibrate the detector correctly:
•
Flexible plastic tubing (Figure 15, ref. 2).
•
Manometer and regulator valve for the compressed gas cylinders (rep. 3).
•
0 to 60 l/h flow meter (if the cylinder is not equipped with one).
•
Calibration pipe (ref. 1), which may vary depending on the nature of the gas (see pages
19 and following).
•
Test gas cylinder (ref. 4).