Phau Ntawv Qhia

Instruction manual switches with circular electronic unit 06 December 2021
Instruction manual
HB switches with circular electronic unit
Covers: HBSC, HBSR, HBSR-HFC, HBSO-LT, HBSO1, HBSO2, HBOR, HBSO1-MT & HBSO2-MT
Functionality
The switches are used for detecting liquid in gas or air (HBOR detect oil in liquid ammonia). The mechanical elements have
different design because they are optimized to different liquids. The switches use the capacitive measuring principle and react to
the difference in dielectric constant between liquid and gas.
The switches have different calibration and parameter settings in the electronic unit, but unit is the same. The settings cannot
be changed by the user, and it must match the mechanical part. Switches delivered after September 2020 has a build in heater
which will be in operation below 5°C to keep the sensor dry
Standard switches available from HB-products
Switches from HB-products are suited for different fluids, different temperature ranges and supply voltages. There is a special
program for oil switches. The two tables show the recommended products.
Oil switches

Summary of content (5 pages)