ENMET EX-6165 - Manual (Page 10)

EX-6120, 6165 SERIES IR ENMET Corporation
7
3.8 Initial Gas Testing
EX-6120, 6165 S ERIES IR units are factory calibrated as detailed on the calibration certificate supplied with the
instrument. However, it is always advisable after installation to confirm that the instrument reads zero with no gas
present and responds accurately when presented with an appropriate concentration of the target gas.
The EX-6120, 6165 S ERIES IR display becomes operational within 60 seconds however; the sensor should be allowed
to stabilize for the period of five to ten minutes before attempting to check the zero setting and gas response.
Refer to Figure 9 showing the arrangement for applying the test gas to the EX-6120, 6165 S ERIES IR .
1. Before application of the test gas, check that the EX-6120, 6165 S ERIES IR reads zero with no known gas
present in the atmosphere. If necessary, carry out adjustment of the zero setting as described in section 5.1.1
2. Apply the test gas and allow a sufficient time for the sample to reach the gas detector and for the sensor
response to stabilize.
Carrying out the above procedure, and comparing the results with previous readings, reference the certificate of
calibration, will confirm that the
EX-6120, 6165 S ERIES IR is functioning correctly, both physically and electrically.
There is therefore no requirement for any further maintenance other than to clean the display window as required.
In the unlikely event that the response has changed from the previous readings, recalibrate the unit. See Section 5.1.1
and 5.1.2.
Figure 9: Appling Test Gas to EX-6120, 6165 S ERIES IR
3.8.1 Suggested calibration Test gas levels.
Hydrocarbon sensor:
Zero contaminant free air.
Span 50% of the target gas(for 0 – 100% LEL range).
Carbon Dioxide sensor:
Zero Nitrogen.
Span Approximately 50% of Range.
With Weatherguard
Certified Test Gas
Cylinder
Sampling Tube
Flow Regulator
Calibration Adaptor with Weatherguard,
part number 04546-012
Calibration Adapter,
part number 03700-058