Part 2 Installation
2.7
Installing the Oxygen Sensor, using H1 Flow KF-40 Sensor Housing
The OMD-501D can accept either a TO2-1x or TO2-2x (CO2 Applications) trace oxygen sensor. For proper
selection with your application, please view our online application guide or contact your local sales rep.
Prior to installing the sensor, it is important to make sure that the analyzer gas lines are hooked up and the
unit is ready to purge with a zero gas. Connect the zero gas line and set your flow between 0.5 - 4.0 SCFH.
The sensor housing can also be installed in a low O2 environment with no flow such as a glove box or other
closed environment.
To Install the Sensor:
- Remove the top portion of the sensor housing by unscrewing it.
- Lift up on the top of the sensor housing and set to the side.
- Inspect O’ring for cracking, replace if necessary.
Always lube your Orings!
- Remove the sensor from its box. With scissors, open nitrogen purged packaging
and remove the sensor.
- Visually inspect sensor for damage, if damaged notify the factory immediately.
- Remove the shorting pins across the back of the sensor board contacts.
- Place the sensor inside the bottom housing with the metal screen mesh facing down
and the circuit board contacts facing up.
- Return upper portion of the sensor housing to the stainless steel bottom. Hand
tight should be acceptable to create an airtight seal.
- Immediately insert into glove box or other atmosphere with zero gas.
- If the analyzer has not been calibrating, refer to section 4.1 for more information.
CAUTION: Prior to installing the oxygen sensor. Read section 4.1
on performing a span calibration.
H1 Sensor Housing
Top portion of sensor housing
Bottom portion of sensor housing
