Type K thermocouple · 0–5 V analog out
A potted thermocouple amplifier. The output side is the same three wires as any pressure sensor — supply, ground, signal — so it wires into a spare analog input and calibrates with two points. Sold as a kit with a tested ungrounded probe, bung and fitting, or as the module on its own.
| Parameter | EGX5 | EGX12 |
|---|---|---|
| Range | 0 – 980 °C | 0 – 1250 °C |
| Output | 5 mV/°C | 4 mV/°C |
| Zero | 0.000 V = 0 °C | 0.000 V = 0 °C |
| Supply | 5 V — the ECU's sensor rail | 8 – 16 V switched, 12 V nominal |
| Input protection | None — bare amplifier input | Series limits, RC filter and clamp diodes on both legs |
| Initial accuracy | ±3 °C at 25 °C | ±3 °C at 25 °C |
| Kit probe | Stainless, 5 mm, 0 – 1200 °C | Stainless, 5 mm, 0 – 1200 °C — the kit's ceiling, not the module's |
| Pro probe | Inconel, 3/16″ sealed, ungrounded tip, 1300 °C, ±1.1 °C SLE, response TBC | Inconel, 1/8″ sealed, ungrounded tip, 1300 °C, ±1.1 °C SLE, 550 ms — reaches the full 1250 °C |
| Pre-turbo option | +$20 — Inconel, 1/4″, sealed, ungrounded tip, response TBC | +$20 — Inconel, 1/4″ swaged to 1/8″, sealed, ungrounded tip, 500 ms |
| Probe mount | Weld-in bung included — 1/8″-27 NPT, 304 stainless | Weld-in bung included — 1/8″-27 NPT, 304 stainless |
| No-weld option | +$24.95 — M18 × 1.5 male to 1/8″ NPT female adapter, not stocked, so it adds a few days to dispatch. Uses a spare O2 port, and raises the probe: check stack height and insertion depth first. | +$24.95 — M18 × 1.5 male to 1/8″ NPT female adapter, not stocked, so it adds a few days to dispatch. Uses a spare O2 port, and raises the probe: check stack height and insertion depth first. |
| Size | 36.3 × 27.5 × 15.6 mm, printed ASA | 44 × 34 × 16.1 mm, printed ASA |
Output leads: red supply · black ground · white signal. Thermocouple, module only: yellow + · red −. Kits end in a mini-K socket.
12 months, replace, no questions asked. If it stops reading, tell us what it was fitted to and a new one goes out. We would rather know that it failed than argue about why.
The module is sealed against vibration, moisture and heat cycling. That does not protect against a grounded probe — see rule one.