Oil Return Switch HBOR

HBOR is a liquid level switch designed for automatic Oil return in ammonia systems. The sensor measures and detects the difference between the refrigerant and oil in a refrigeration system. Increased security is achieved as the sensor measures when the oil is drained and ammonia surrounds the sensor, the Oil Pot Switch closes the drain valve, without the risk of ammonia being emitted to the surroundings. Used for oil return / discharge of separated oil in e.g. evaporators, receivers and oil pots.

HBOR is mainly used for the low pressure side of the refrigeration system.

Features

Proven sensor technology for simple transsistor output PNP/NPN and NO/NC contact function.
The NO/NC term refers to the state of the contact in "dry" condition, when not influenced by the oil.
Designed for the industrial refrigeration industry - max pressure 100 bar.
Clear indication with LED when oil is detected.
Split design which makes it easy to install and make diagnostic on. The electronic part can be easily disconnected by 2 screws.

Download manual

TYPES

Output	Thread type	Connection	Ordering code
PNP / NO	1/2″ NPT	Set Screw	HBOR-PNP/NO-1
PNP / NC	1/2″ NPT	Set Screw	HBOR-PNP/NC-1
PNP / NO	3/4″ NPT	Set Screw	HBOR-PNP/NO-2
PNP / NC	3/4″ NPT	Set Screw	HBOR-PNP/NC-2
PNP / NO	1/2″ BSPP	Set Screw	HBOR-PNP/NO-5
PNP / NC	1/2″ BSPP	Set Screw	HBOR-PNP/NC-5
PNP / NO	3/4″ BSPP	Set Screw	HBOR-PNP/NO-6
PNP / NC	3/4″ BSPP	Set Screw	HBOR-PNP/NC-6
NPN / NO	1/2″ NPT	Set Screw	HBOR-NPN/NO-1
NPN / NC	1/2″ NPT	Set Screw	HBOR-NPN/NC-1
NPN / NO	3/4″ NPT	Set Screw	HBOR-NPN/NO-2
NPN / NC	3/4″ NPT	Set Screw	HBOR-NPN/NC-2
NPN / NO	1/2″ BSPP	Set Screw	HBOR-NPN/NO-5
NPN / NC	1/2″ BSPP	Set Screw	HBOR-NPN/NC-5
NPN / NO	3/4″ BSPP	Set Screw	HBOR-NPN/NO-6
NPN / NC	3/4″ BSPP	Set Screw	HBOR-NPN/NC-6

Ideal for heat pumps & outdoor installation:
PNP / NO	1/2″ NPT	Union Connection	HBOR-U-PNP/NO-1
PNP / NC	1/2″ NPT	Union Connection	HBOR-U-PNP/NC-1
PNP / NO	3/4″ NPT	Union Connection	HBOR-U-PNP/NO-2
PNP / NC	3/4″ NPT	Union Connection	HBOR-U-PNP/NC-2
PNP / NO	1/2″ BSPP	Union Connection	HBOR-U-PNP/NO-5
PNP / NC	1/2″ BSPP	Union Connection	HBOR-U-PNP/NC-5
PNP / NO	3/4″ BSPP	Union Connection	HBOR-U-PNP/NO-6
PNP / NC	3/4″ BSPP	Union Connection	HBOR-U-PNP/NC-6
NPN / NO	1/2″ NPT	Union Connection	HBOR-U-NPN/NO-1
NPN / NC	1/2″ NPT	Union Connection	HBOR-U-NPN/NC-1
NPN / NO	3/4″ NPT	Union Connection	HBOR-U-NPN/NO-2
NPN / NC	3/4″ NPT	Union Connection	HBOR-U-NPN/NC-2
NPN / NO	1/2″ BSPP	Union Connection	HBOR-U-NPN/NO-5
NPN / NC	1/2″ BSPP	Union Connection	HBOR-U-NPN/NC-5
NPN / NO	3/4″ BSPP	Union Connection	HBOR-U-NPN/NO-6
NPN / NC	3/4″ BSPP	Union Connection	HBOR-U-NPN/NC-6

TECHNICAL SPECS

Power supply
Voltage	24 V AC/DC + 10%
Max current output	Max 50 mA
Current consumption	< 200 mA
Plug connection	ISO4400/DIN 43650 – 4 pins
Output
Transistor output	PNP or NPN
Contact function	NC or NO
Environmental conditions
Ambient temperature	-30…+50°C
Max pressure	100 bar
Protection degree	IP54 or IP66 (U-version)
Vibrations	IEC 60068-2-6 (4g)
Mechanical specifications
Thread connection	3/4″ & 1/2″ NPT or BSPP
Material – liquid parts	AISI 304 / PTFE
Material- electronic parts	Nylon 6 (PA)
Approvals
EMC test	EN 61000-2
GOST-R	No 0903044