HPM135 pressure transmitter is the refrigeration unit, air conditioning control cabinet and other special pressure transmitter.This product adopts international advanced pressure sensing element and transmitter application-specific integrated circuit production of high quality, high reliability, strong resistance to overload the characteristics of pressure transmitter, it is mainly used for water-cooled screw units, ground source heat pump, refrigerator, ice machine, etc., its unique design of anti condensation water for pressure protective equipment safe and efficient operation, successfully solved in the operation of the air conditioning refrigeration equipment in trouble.The product has a small structure, a wide range of measurement and a variety of output signals. At the same time, the product can provide a variety of pressure interfaces.Good electrical performance and long - term stability make it an ideal choice in the same industry.
Features:
·Compact structure, compact and beautiful
·Measuring range: 0 ~ 50bar gauge pressure
·Accuracy: 0.5 %BFSL or 1%BFSL
·Output: 4 ~ 20 mA or 0.5 ~ 4.5V
·Electrical connections: parker connector, hersman, etc
·Process connection: G1/4, 7/16-20UNF internal thread, 7/16-20UNF external thread, etc
·Highly cost effective , suitable for mass production
Parameters:
Pressure Range | 0~50bar Gauge |
Output Signal | 4~20mA |
Supply Power(U+) | 12~30VDC |
Over Voltage | 30VDC |
Backward voltage | -30VDC |
The Accuracy of normal temperature | Default ±0.5%F.S |
Medium Temperature | -35~105ºC |
Ambient temperature | -20~85ºC |
Storage temperature | -40ºC~105ºC |
Long-term stability | ±0.5%FS/year |
Response time | (10%~90%)≤10ms |
Overload Pressure | ≥150%F.S |
Breakdown Pressure | ≥200%F.S |
Pressure Connection | 7/16-20UNF External/Internal thread etc. |
Electrical Connection | Packard connector etc |
Liquid seal ring | Default CR seal ring |
Housing Material | Default 304 SS, 316L SS or other options |
Insulation Resistance | ≥100MΩ@100VDC |
Electric Strength | Internal TVS tube Protection, at 50VDC, in 1 minute, no breakdown and flashover |
Vibration | 10g, 5~2000Hz |
Impact | 20g, 11ms half sine |
IP Grade | ≥IP65 |
Structure Drawing:

Pressure Connection:
G1/4 | 7/16-20UNF-2B | 7/16-20UNF-2A |
![]() | ![]() | ![]() |
Electrical Connection:
![]() | Pin | Two Wire | Three Wire | |||
Definition | Wire Color | Definition | Wire Color | |||
A | Shield | Black | GND | Black | ||
B | Power | Red | Power | Red | ||
C | Output | Green/Blue | Output | Green/Blue | ||
Yellow(Shield) |
Ordering Guide:
Item NO. | Type | |||||||
HPM135 | Special pressure transmitter for refrigeration | |||||||
Range | Measuring Range | |||||||
(0~X)bar | Fill out X directly | |||||||
Code | Output Signal | |||||||
B1 | (4~20)mA | |||||||
B6 | (0.5~4.5)V | |||||||
Code | Process Connection | |||||||
P3 | G1/4 | |||||||
P6 | R1/4 | |||||||
P8 | NPT1/4 | |||||||
P10 | 7/16-20UNF External Thread | |||||||
P11 | 7/16-20UNF Internal Thread | |||||||
Code | Electrical Connection | |||||||
C1 | DIN43650 | |||||||
C4 | Packard connector | |||||||
Code | Sensor Type | |||||||
M5 | Ceramic piezoresistive | |||||||
Additional Functions | ||||||||
HPM135 | (0~10)bar | B1 | P11 | C4 | M5 |
Related Products:




Certification:

FAQ:
1. Q: Are you manufacturer or trading company?
A: We are manufacturer which focuses on sensor for 10 years.
2. Q: What's your quality control system?
A: MC, ISO9001, CE Certificated.
3. Q: What is the warranty of your products?
A: Our warranty time is 18 months after shipment.
A: We could accept T/T, Paypal, WU.