The air purge collars for the Calex PyroCube infrared pyrometers. They are used to keep dust, fumes, moisture, and other contaminants away from the lens of the infrared temperature sensor. Use clean (instrument) air. Maximum flow rate: 5 l/min, maximum pressure 0.2 MPa.
| Model | Description |
| IR-CA-APC | Air purge collar for use with PyroCube series S, G, P, and MB |
| IR-CA-APCF | Air purge collar for use with PyroCube series F and XSB |
| IR-CA-APCB | Air purge collar for use with PyroCube series F and XSB |