Lauper Instruments Mocon Ametek OX-TRAN 2/22, Operator'S Manual, Page: 30 / 83

Testing Flat Films OX-TRAN Model 2/22 Operator’s Manual
5-4 Revision R MOCON, Inc.
Humidified Testing
The OX-TRAN Model 2/22 has the capability of generating a controlled RH from 0 to 90% for both the
carrier gas and the test gas. Humidified Carrier and Test Gases are created by moving pressurized gas
through a humidifier filled with HPLC-grade water and mixing the wet gas with a dry gas in the appropriate
ratios.
Caution: To prevent damage to the system, the water level must not exceed the Fill Line.
Filling the Humidifiers
Before starting a test requiring RH generation the level in the humidifiers should be checked and filled if
necessary. Follow these steps to fill the humidifiers:
Note: Refer to Figure 5-1 for the location of the referenced controls.
1. Open the door on the instrument to access the Humidifiers.
2. Check the water levels to determine if there is sufficient water to perform the test.
3. Fill a syringe with HLPC-grade water and attach short piece of tubing to the luer fitting.
4. Push the end of the tubing onto the Fill/Drain Port fitting.
5. Open the appropriate Drain/Fill Valve by turning it 2-3 turns counterclockwise.
6. Slowly push in the plunger on the syringe to force the water into the reservoir.
7. Close the Drain/Fill Valve and remove the syringe.
Filling the Humidifiers during a Test
During a long test requiring RH generation the level in the humidifiers should be checked periodically and
filled if necessary. Follow these steps to fill the humidifiers during a test:
Note: Refer to Figure 5-1 for the location of the reference controls.
1. Open the door on the instrument to access the Humidifiers.
2. Check the water levels to determine if there is sufficient water to perform the test.
3. Put the instrument in ByPass using the GoTo control.
4. Fill a syringe with HLPC-grade water and attach short piece of tubing to the luer fitting.
5. Push the end of the tubing onto the Fill/Drain Port fitting.
6. Open the appropriate Drain/Fill Valve by turning it 2-3 turns counterclockwise.
7. Slowly push in the plunger on the syringe to force the water into the reservoir.
8. Close the Drain/Fill Valve and remove the syringe.
9. Start a ReZero examination using the GoTo control.