What Is Pyrometer Gauge?

A pyrometer is a temperature gauge designed to measure high temperatures above those measurable with an ordinary thermometer. It consists of a temperature-sensing probe (thermocouple) that is placed in the area, or flow, to be measured. ... The purpose is to measure and display EGT in degrees Fahrenheit (F.).

What does a pyrometer measure on a diesel?

A pyrometer measures the temperature of the engine through its exhaust fumes. A probe is placed within the flow of exhaust air to receive the best gauge of how hot the engine fumes are becoming. Normal operating ranges are from 300 degrees to 1200 degrees. Any fluctuations from this range can damage the engine.

What is the highest recommended pyrometer temperature?

It depends on where the pyrometer is sensing. If you install pre-turbo then your safe point is a maximum of 1200 F or so, (it doesn't vary between engines much as it's based on the melting point of the aluminum pistons).