ENMET RECON/4 - Manual (Page 7)

RECON/4 ENMET Corporation
5
4.0 Calibration
C AUTION : The RECON/4 will Auto Zero when you enter the calibration menu. Please fully charge the RECON/4 and put the
instrument into a clean air environment before proceeding with this procedure.
The RECON/4 is capable of calibrating all active channels at the same time. However, you may elect to calibrate individual
gas sensors. During calibration, the RECON/4 automatically determines if a single gas or multi gas is being applied.
With the RECON/4 ON, Press and hold the button, the RECON/4 will turn OFF; continue to press the button until the
instrument restarts. The Display will show Calibration followed by Warming Up, and will list the proper concentrations of
calibration gasses.
After warming up, the RECON/4 begins Zero calibration (Zero Cal). A bar graph will appear indicating the zero calibration
time (1 minute). Connect the gas cylinder to the regulator and the calibration cover. DO NOT open the valve on the
regulator.
When Zero Cal is complete the screen will display Span Cal and a bar graph and the active sensors with their associated
reference numbers.
Note: The
RECON/4 is comparing internal data to the sensor reference numbers listed in the display. The bar graph will fill
from left to right. Note sensor reference numbers. If they are stable (not changing), proceed to the next step. If they are
changing wait for the bar graph to fill (4 minutes). At completion of the 4 minutes the calibration process will automatically
continue and the display will now indicate Cal Span Time 2 Min and a % sign.
At completion of the 4 minute Span Cal, or when you see that the reference numbers for the sensors are stable, connect the
calibration cover to the
RECON/4
Open the valve on the regulator to apply the calibration gas. The bar graph will fill in and the % sigh will change to indicate
the calibration completion time. Do not press the button on the
RECON/4 or interrupt the gas flow during this procedure.
The RECON/4 will automatically analyze the gas and process the calibration.
After calibration, the screen will display the calibrated gas(es) name and relative data. For each calibrated sensor you will see
two sets of calibration numbers, Zero and Span for each sensor that detected calibration gas, and then the
RECON/4 will
automatically turn off. If you do not see both sets of numbers for the sensor(s), calibration was not completed successfully.
Note: The
RECON/4 automatically determines if a single or multi gas is applied, you will only see calibration numbers for
the gas/gases that are being applied; the remaining sensors are not affected.
If you are calibrating individual sensors repeat the above process
If the calibration was unsuccessful wait one hour and repeat the calibration procedure
Figure 3: Calibration of RECON/4
4.1 Calibration Equipment
ENMET part numbers
Description of Part Part Number
Regulator Assembly for 34, aluminum cylinders 02506-002
Use with
Gas Cylinder, aluminum 40ppm H2S, 34 liter 03314-040
Gas Cylinder, Mixed Gas, aluminum 34 liter 500ppm CO, 40ppm H2S, 50%LEL CH4, 20.9%O2, balance N2 03388-001
Regulator Assembly for 34 liter steel cylinders 02506-004
Use with
Gas Cylinder, steel 50%LEL Methane, 34liter 03220-050
Gas Cylinder, steel 20.9% O2, 34 liter 03296-209
Gas Cylinder, steel 500ppm CO, 34 liter 03219-500
Sensor Cover Assembly Recon/4 02615-025
Calibration Cover
Regulator
Gas Cylinder