Oxygen Measuring Module
The oxygen measuring module ZR5 is based on the approved zirconia technology. It serves the continuous measurement of oxygen concentration in industry and laboratory gases and the monitoring of protective gases. Deviations of the oxygen concentration from setpoints can be signalized, the procedure of special production processes under inert gas can be monitored by the ZR5 module.
| Measuring range | 1 ppm…100 O2 Vol% |
| Sensor | Potentiometric zirconia cell |
| Accuracy | rel. error < 5% |
| Gas flow | 8 ± 2 l/h, controlled via (can be turned off) internal pump |
| Max. measuring gas pressure | 20 mbar overpressure |
| Max. measuring gas temperature | 80 °C at gas input |
| Warm-up time | < 15 min |
| Signal output | Analog: 0/4...20 mA for O2 (Digital: RS 232 as option) |
| Power supply | 24 V DC (± 20 %) |
| Power consumption | Approx.. 20W |
| Display | LED for failure display only (External display as option) |
| Gas connection | Inlet: Swagelok 3 mm, outlet: tube nipple 4 mm |
| Working conditions | 0...50 °C, rel. humidity < 80% |
| Protection degree | IP20 |
| Dimensions (W x H x D) | 100 mm x 105 mm x 170 mm |