UYB liquid leveltransmitters are used to measure the liquid level in refrigerant vessels. UYBtransmits an active 4-20 mA signal which is proportional to the refrigerantliquid level. The 4-20 mA signal from UYB can be used in conjunction with acontroller to control the refrigerant liquid level. The Danfoss EKC 347 liquidlevel controller, is a dedicated controller for use with the UYB.
1.”Plug and Play”:no calibration required.
withoutemptying the standpipe.
the actual application.
1. :R717 ,R22 ,R404A ,R134a, R410a ,R744 ,R718 (H 2O)
Length range3. : –100/+200° C
Pressure range:UYB isdesigned for:Max. working pressure: 63 bar
Connection:Pipethread ISO 228/1 - G 1A
Ambient temperature:Duringoperation: –25 to +55°C (–13/+131°F).
7. 8. 9. 10. 11. 12. 13. 14. Thread:Stainlesssteel. AISI 304
The rod consists of twopipes - an inner pipe and an outer pipe. The liquid will flow up between thetwo pipes and by measuring the electrical capacitance between the pipes, thelength of rod immersed in the liquid refrigerant is registered. The signal istransmitted as a current signal from 4 to 20 mA (4 mA when the rod does notregister liquid - and 20 mA when the entire rod is surrounded by liquid).
The rod comes factory calibrated for R134a ), so that it will cover 4 to 20 mAthroughout the rod’ s whole measuring range. Any disturbances in connectionwith the level measurement will be damped internally.
It is not necessary tochange the settings. The factory setting can be used.
The setting may becarried out before the level transmitter is mounted on the plant.
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