HB Products PNP-NC-1 Liquid Level Switch User Guide

Liquid Level Switch
selection guide

24V AC/DC Level Switches

PNP-NC-1 Liquid Level Switch

| 24V AC/DC| LIQUID IN GAS| OIL IN AMMONIA
OR WATER
---|---|---|---
Liquid temperature
Recommended liquid
temperature and IP class.
Specified temperature
range is typically wider| PAO oil
Mineral oil
POE oil
High
temperature| POE oil
Low
temperature
PAG oil| R744 CO2
R600 Butane
R600a Isobutane
R290 Propane| R507, R410a, R407c
R404a, R22, R32,
R134a, R1234yf,
R1234ze
Other HFC/HFO/CFC| R717 NH3
Water
Alcohols| Oil (All types)
Cold and cold
ambient conditions
IP66| HBSO-LT
-30°C to 40°C
(-22°F to 104°F)| HBSC2-SSR-1/IP
-50°C to 30°C
(-67°F to 86°F)| HBSR-HFC-SSR-1/IP
-55°C to 30°C
(-67°F to 86°F)| HBSR-SSR-1/IP
-55°C to 30°C
(-67°F to 86°F)| HBOR/C-U
-60°C to 80°C
(-76°F to 176°F)
Normal dry conditions IP54| HBSO1
0°C to 60°C
(32°F to 140°F)| HBSO2
0°C to 60°C
(32°F to 140°F)| HBSC2
-40°C to 50°C
(-40°F to 122°F)| HBSR-HFC
-40°C to 50°C
(-40°F to 122°F)| HBSR
-40°C to 50°C
(-40°F to 122°F)| HBOR  & HBOR/C
-60°C to 80°C
(-76°F to 176°F)
Normal but wet and condensing applications IP66 | On request| On request| HBSC2-U
-40°C to 50°C
(-40°F to 122°F) | HBSR-HFC-U
-40°C to 50°C
(-40°F to 122°F)
| HBSR-U
-40°C to 50°C
(-40°F to 122°F)| HBOR/C-U
-60°C to 80°C
(-76°F to 176°F)
Warm
IP54| HBSO1
-MT
40°C to 100°C
(104°F to 212°F)| HBSO2
-MT
40°C to 100°C
(104°F to 212°F)| HBSC2
50°C to 80°C
(122°F to 176°F)| HBSR-HFC
50°C to 80°C
(122°F to 176°F)| HBSR-HP
50°C to 80°C
(122°F to 176°F)| On request
Hot
IP54| HBSO-SSR-1-HT
90°C- to 145°C
(194°F to 293°F)| On request| On request| On request| N.A

90-240V AC Level Switches

| 90-240V AC| LIQUID
---|---|---
Liquid temperature Recommended liquid temperature and IP class. Specified temperature range is
typically wider| PAO oil
Mineral oil
POE oil
High temperature| POE oil
Low temperature
PAG oil| R744 CO2
R600 Butane
R600a Isobutane
R290 Propane| R507, R410a, R407c
R404a, R22, R32,
R134a, R1234yf,
R1234ze
Other HFC/HFO/CFC| R717 NH3
R718  Water
Alcohols
Cold and cold ambient conditions IP66 | HBSO-SSR-2-LT
-30°C to 40°C
(-22°F to 104°F) | HBSC2-U-SSR2
-55°C to 80°C
(-67°F to 176°F) | HBSR2-U-SSR2
-55°C to 80°C
(-67°F to 176°F) | HBSR2-U-SSR2
-55°C to 80°C
(-67°F to 176°F )
Normal and warm dry
conditions
IP54| HSO1-SSR-2
0°C to 60°C
(32°F to 140°F)| HSO2-SSR-2
0°C to 60°C
(32°F to 140°F)| HBSC2-SSR-2
-30°C to 80 °C
(-22°F to 176°F)| HBSR-SSR-2
-30°C to 80°C
(-22°F to 176°F)| HBSR-SSR-2
-30°C to 80°C
(-22°F to 176°F)

IP class:
IP54 is suited for indoor use with limited condensation and no water jet cleaning.
IP66 is suited for outdoor use where condensation occur. If high-pressure water cleaning with aggressive cleaning agents is used the sensor need further protection.

Product ordering codes and thread connections

Other commonly used codes

U:| Union connection instead of V track with set screws (standard)
L:| Long version
IP:| Ice proof (low temperature version)
LT:| Low temperature version
MT:| Medium temperature version
HT:| High temperature version
HP:| Heat pump version
HFC:| Suited for HFC, HFO, CFC and other synthetic refrigerants
/C:| Built in controller for modulating valve
/S:| Built in controller for stepper motor valve
/PWM:|  Built in controller for pulse width modulating valve
SSR-1:| Solid state relay output for 24 V DC/AC supply
SSR-2:| Solid state relay output for 90-240 V AC supply

Thread codes
(stamped on the sensor )

NPT (National Pipe Taper)
BSPT (British Standard Pipe Taper (“R”))
BSPP (British Standard Pipe Parallel (“G”))
UNEF (Unified National Extra Fine)
UNF (Unified National Fine)
Product ordering codes and thread connections

NO/NC what is the difference?
You can order the sensor as NO  or NC and it is a question aboutwhat fits your system. A NO switch provides no output until liquid is detected. A NC switch provide an output until liquid is detected.
NC is common for fail safe systems where you like to get an indication if the wire is broken.
NO
Contact is normally open and closes when liquid is detected

NC
Contact is normally closed and opens when liquid is detected

24 V – NPN or PNP output ISO 4400/DIN 43650 plug
A PNP switch is common in Europe and provide a positive signal on pin 3 when switching.
A NPN switch is common in America and provide a ground signal on pin 3 when switching. Solid state relay (SSR) IEC 61076-2-101 M12 plug
The large electronic units has a potential free relay output.
When switching there will be connection between pin 3 and pin 4.
24V versions

1. : +24 VDC or 24VAC
2. : – common or 24VAC
3. : Output potential free
4. : Output potential free
5. : Communication

90-240V versions

1. : 90-240 V AC
2. : 90-240 V AC
3. : Output potential free
4. : Output potential free

ATEX/IECEx approved switches with IEC 61076-2-101 M12 plug
All the 24V switches are available in an ATEX/IECEx approved version. The switch has a two-wire analog output which will be either 4 or 20 mA. The switch can be changed between NO and NC when connecting it to the HB-tool.
The sensor is used together with a barrier to comply with ATEX/ IECEx requirements.

1. : +24 VDC
2. : Not used
3. : Not used
4. : Analog output
5. : Not used

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