Calibration - Siemens ULTRAMAT 6 Series Compact Operating Instructions

The device must be set up in a well ventilated place so that an explosive mixture cannot build
up in the device environment.
If the device is installed in a cabinet, it must be insured through suitable measures that the
ventilation rate in this cabinet amounts to at least 1/h (exhaust air at cabinet cover, supply air
at cabinet bottom).
2.6.1

Calibration

Calibration
The CALOMAT 6 must be adjusted or calibrated at 2 points: At the zero point for 0 % H
the impact point (sensitivity) for 100 % H
instructions CALOMAT 6 (A5E00116454) section 5.2.2.
Required gas concentrations:
• 100 % nitrogen (N
• 100 % oxygen (O
• 100 % hydrogen (O
Proceed as follows:
1. Check the calibration setting in Function 23. The overall calibration must be activated. All
measuring ranges are calibrated in their entirety.
2. Check the setting of the setpoint values in Function 22. The value 0.000 must be entered as
the setpoint value for the zero point. Measuring range 3 must be selected as the leading
measuring range. The final value concentration must be entered with 100% vol.
3. Zero-point calibration: Select Function 20. First flush the gas path with the inert gas
nitrogen to flush any hydrogen concentration in the gas path. The measured value does not
change to 0 % H
O
4. Apply 100 % O
stable. This can take 5 minutes. The measured value should lie close to the value 0 % vol. H
5. Trigger the calibration in Function 20.
6. Sensitivity calibration: Select Function 21. Flush the gas path with inert gas N
7. Apply the 100 % H
8. Trigger the sensitivity calibration in Function 21.
9. Then flush again with inert gas N
10.Apply and acknowledge the calibration by pressing the "MEAS" key.
Series 6 and ULTRAMAT 23
Compact Operating Instructions, 01/2024, A5E45779144002-AB
) – inert purging gas
2
) (purity 99.999 % O
2
) (purity 99.999 % O
2
but to about -1.4 % H
2
.
2
concentration to the device. Wait long enough until the measured value is
2
concentration to the device. Wait again until the measured value is stable.
2
2.6 Measurement of hydrogen in oxygen with Calomat 6E
. To operate the CALOMAT 6, see the operating
2
or better) – zero-point calibration
2
or better) – sensitivity calibration
2
because N has a different thermal conductivity than
2 2
.
2
Safety instructions
and at
2
.
2
.
2
23