I. Introduction

Digital bimetallic thermometer is a kind of on-site measuring instrument for measuring medium and low temperature. The digital bimetallic thermometer can directly measure the temperature of liquid, steam and gas medium in the range of -50 to +200 C in various production processes.

The digital bimetallic thermometer head adopts a high-precision, ultra low power integrated circuit and a wide temperature liquid crystal display. The built-in high energy battery continuously works for more than 2 years without laying the power supply cable. It is a new type of temperature display instrument with high accuracy, good stability and high applicability. It is an ideal substitute for the traditional spot pointer bimetallic thermometer.

Two, working principle

The bimetallic thermometer is based on a bimetallic strip circled and bent. When one end is heated and expanded, the needle is driven to rotate, and the working instrument displays the temperature value of the thermal potential.

Three, main technical parameters

1, product implementation standard: JB/T 8803-2015

2, scale nominal diameter: 100

3, measurement range: -50~+200 C

4, accuracy: 0.5

5, resolution: 0.1 C

6, thermal response time: less than 40s

7, protection level: IP55

8, the angle adjustment error should not exceed 1% of its range.

9, return difference: thermometer return error should not be greater than the basic error limit value.

10. Repeatability: the repeatability limit range of thermometers should not be greater than 1 / 2 of the basic error limits.

Four, selection coding

Five, specification type

1. Axial digital bimetallic thermometer

2, radial digital bimetallic thermometer