ENMET RECON-IS - Manual (Page 9)

RECON-IS ENMET
7
3.8 Calibration
In order to assure the testing accuracy, ENMET suggests that the RECON-IS be calibrated at a minimum of every 180 days.
The calibration procedures are as follows:
1. In clean air, press the button till the detector is turned off,
keep pressing the button, the detector will turn on again, the
screen displays time count-down of 3 second.
2. When the screen displays “CAL”, release the button and the
detector enters calibration status.
3. The detector will first calibrate the zero point. Please connect
the detector to the gas bottle and input high-pure N2 into the
detector at the speed of 120ml/min. Or put the detector in the
clean air and it will calibrate zero.
Not used for Oxygen
Example:
4. When the screen displays flashing calibration points, connect
the cylinder regulator, calibration gas and sensor cover to the
instrument. In 30 seconds display will indicate numbers
Example 1476 and continue to change until the sensor response
stabilizes If no gas input within 30s, the system treats the
calibration as failed.
Example CO, See Table 1
Calibration Gas Sensor Respinding to
Not used for Oxygen Calibration Gas
5. If the standard gas is input normally, the detector will adjust
once every 3 seconds till the system is steady and the
calibration is finished. If calibration succeeded, the screen
displays “S” and returns to self-test, see section 3.1.
Remove the calibration gas Press & Hold the button until the
instrument turns off.
6. If calibration failed, the screen displays “F C” for 30 second.
During this period, the user can press the button to repeat the
calibration.
7. During the 30 seconds of “F C” flashing, if no operation, the
calibration failed. The screen will display “F” and the detector
turns off automatically.
Figure 3: RECON-IS with Calibration Adapter
Gas Cylinder with
Regulator Valve
Calibration Cover
With tube connected
to regulator valve