
Gold Probe Oxygen Probe
The world's best-selling zirconia oxygen probe measures and controls oxygen, dew point and carbon potential in heat treatment furnace atmospheres.
Oxygen probes
Measures oxygen from 510 °C upwards, covering nitriding, ferritic nitrocarburising and pre- and post-oxidation processes at low temperatures.
Built on the traditional Gold Probe design, the Nitro Probe delivers precision and repeatability in controlled atmospheres with a focus on the lower temperatures typically found in ferritic nitrocarburising applications. Its modified construction lowers the minimum operating temperature to 510 °C, compared with the standard Gold Probe.
The Nitro Probe is ideal for the measurement of carbon potential above 510 °C and for pre- and post-oxidation processes at lower temperatures. It retains the patented sheath and electrode design of the Gold Probe family, so it can be burnt out and rebuilt in the same way.
| Carbon potential measurement | 0.01 % - 1.6 % |
|---|---|
| Accuracy | +/- 0.02 %CP |
| Operating temperature | 510 °C to 1100 °C |
| Thermocouple versions available | S, R, K, N, B or version without thermocouple |
| Available lengths | 400 mm, 600 mm, 750 mm |
| Mounting | 1" NPT or 3/4" BSP |
| Output signal | 0 to 1205 mV |
| Impedance | below 2 kOhm when new |
Applications
The probe measures and controls the carbon potential in controlled atmospheres, whatever the furnace design.
Enquiry
We reply within one working day, with a configuration and a quotation.

The world's best-selling zirconia oxygen probe measures and controls oxygen, dew point and carbon potential in heat treatment furnace atmospheres.

A patented diffused ceramic CERMET coating protects the sheath against temperature and carbon erosion, extending probe life in aggressive carburising atmospheres.

A reinforced spring assembly compensates the differential thermal expansion of ceramic parts and sheath in probes longer than 1000 mm.