The APIS101 PurgEye 100 replacement sensor is listed for the older plastic-housing instrument. This weld purge monitor replacement sensor should be selected from the instrument generation and serial number rather than from the PurgEye 100 model name alone.
Plastic or aluminum monitor housing?
For the newer aluminum-housing monitor, review the separate APIS100 replacement sensor listing. Send Justram the monitor serial number and a photograph if you are unsure which generation you have. Confirm compatibility before opening a replacement sensor.
Maintain the instrument after replacement
Follow the applicable monitor instructions for sensor installation, storage and calibration checks. Keep the sensor sealed until it is required. If you need help with the replacement, ask Justram about service and the APIS102 sensor replacement tool.
Browse the PurgEye 100 monitor and accessories selection page for related items.




