Refrigerant level control, Differential Pressure Transmitter with Remote Diaphgram Seals or Guided Wave Radar?

When we talk about the level indication/control of the refrigerant, the liquid in close loop system where it boiled in one heatexchanger and condensed in another one. We need to keep the level at the boiler which is tube and shell heatexchanger by controlling the pump supplying the liquid.

If using a differential pressure transmitter or a guided wave radar, it is mostly the case the it will not be under control and spikes up and down. 

The best solution would be using a differential pressure transmitter with remote seals. Due to the nature of the liquid and the low pressure measured, it must be equipped with two diaphragm seals each with 2" or (Preferable 3") 150 or 300# flanges.

Any interest about our UIB3351 remote differenital pressure transmitter, please contact Stella Meng.