The installation method of a bimetallic thermometer directly affects its measurement accuracy and service life. Below are detailed installation steps and precautions:
Selecting an Installation Location
Avoid Vibration Areas: Vibration can cause wear on the mechanical structure. It is recommended to install it on a stable part of a pipe or equipment.
Keep Away from Heat/Cold Sources: Maintain a distance of at least 20cm from heating coils or cooling vents.
Easy-to-Read Angle:The dial should not be tilted more than 30°. In industrial settings, a protective cover is recommended.
Installation and Fixing Methods
Threaded Installation (Common Type):Use a compatible threaded interface (e.g., G1/2, NPT1/4). The sealing material must be heat-resistant (e.g., PTFE tape).
Tightening torque should be controlled at 15-20 N·m. Excessive force may damage the sensing element.
Flange Installation:Match the flange standard (e.g., DIN EN 1092-1). Bolts should be tightened symmetrically, applying pressure in stages to the final torque (typically 40-60 N·m).
Compression Fitting Installation: Suitable for thin-walled pipes. The compression fitting must match the pipe's outer diameter (tolerance ±0.5mm). An airtightness test should be performed after installation.
Sensing End Treatment
Insertion Depth: The sensing part must be completely immersed in the measured medium. For industrial pipelines, an insertion length ≥ 2/3 of the pipe diameter is recommended.
Thermal Conductivity Optimization: In low thermal conductivity media (such as gases), thermal paste can be added or the sensing sleeve can be extended.
Electrical Connection (Digital Display Model): The power cord must meet IP rating (e.g., IP65). The terminal torque should be 0.5-0.8 N·m. Avoid sources of signal interference (such as frequency converters).
