Pressure sensor 45 bar

characteristics, use and recommendations

Refrigerant pressure sensor 45 bar WNK85x45 — is a high-precision device designed for measuring pressure in systems using various types of refrigerants. This sensor is equipped with piezoresistive technology and provides an output signal of 0…5 V, which makes it a versatile solution for heat pumps, air conditioning systems and refrigeration installations.

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Pressure sensor 45 bar. Technical specifications

• Measurement range: 0…45.5 bar
• Output signal: logometric, 0,5…4,5 V
• Feeding: 4.5…5.5 V DC
• Operating temperature: -40…135 °C
• Protection class: IP65
• Connection: 7/16-20UNF
• Size: 21×48,1 mm

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Pressure sensor 45 bar. Advantages

1. Compatibility with latest generation refrigerants
   Suitable for use with R12, R22, R134A, R404A, R407C, R410A, R448A, R449A, R452A, R502, R507, R513A, R744, HFO 1234ze, R290, R32. Exceptions: not compatible with R717 (ammonia) and glycol.
2. Resistance to external influences
   The sensor demonstrates superior resistance to EMI interference and maintains signal stability even under difficult operating conditions.
3. Ease of installation
   The device can be mounted directly on the refrigerant pipe without the need for capillary tubes.
4. Durability
   The brass housing and robust construction ensure a long service life even under heavy loads.

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Application areas

Pressure sensor 45 bar is used in the following systems:

• Air conditioning systems.
• Refrigeration installations.
• Heat pumps for heating, cooling and domestic hot water.
• Industrial refrigeration systems (except those using ammonia).

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Recommendations for connection and use

• Assembly
  Use standard 7/16-20UNF connector for installation. Ensure system tightness to avoid refrigerant loss.
• Log in
  Power is supplied to the sensor via the 0.5…4.5 V analog output. For correct operation, use a DC power supply with parameters of 4.5…5.5 V.
• Maintenance
  1. Periodically check connections for corrosion or leaks.
  2. Clean the sensor surface to avoid reducing the accuracy of measurements.
  3. Do not use the sensor with incompatible refrigerants, such as ammonia (R717) or glycol solutions.

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Why choose a 45 bar pressure sensor?

1. High measurement accuracy: Technology piezoresistive guarantees accurate and reliable results.
2. Wide operating temperature range: from -40°C to +135°C, allowing use in various climatic conditions.
3. Affordable price: this sensor is an economical choice for heating and cooling systems.

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Conclusion

Pressure sensor 45 bar WNK85x45 — is a reliable, economical and universal device for systems using most modern refrigerants. High accuracy, resistance to interference and ease of installation make it an ideal choice for a wide range of applications.

Order Pressure Sensor 45 bar from the ALTAL online store. We offer competitive prices, quality guarantee and fast delivery.

💡 Expert tip: Periodically check the sensor's operation and perform preventive maintenance to extend the life of the equipment and avoid unforeseen failures.

Model	Pressure sensor 45 bar WNK85x45
Pressure (PSI)	-14.5 la 653	PSI	0,5 – 4,5V
Pressure (bar)	-1 the 45	Bar	0,5 – 4,5V
Pressure (kPa)	-1000 to 4500	kPa	0,5 – 4,5V
Excessive pressure (bar)	Prooms​=Pfact​−Patm		Bar
Swirl pressure (bar)	110		Bar
Mechanical connection	7/16-20UNF

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