hengst Original Rexroth Differential Pressure Transmitter R928028409 WE-1SP-M12X1

1. Product Overview

This is a product produced byHengst forRexroth as a supporting item. It is amechanical differential pressure indicator. It is usually installed ona dual - cartridge high - pressure filter to monitor the differential pressure across the filter element. When the differential pressure reaches the preset value due to the filter element being clogged by contaminants, the indicator will trigger anelectrical switch signal (usually a change of normally - open/normally - closed contacts) to send an alarm to the control system, indicating that the filter element needs to be replaced, thus protecting the downstream hydraulic components.

2. Core Features

• Reliable mechanical triggering: It uses a classicspring - loaded piston structure to directly sense the differential pressure. Compared with electronic sensors, it hasstrong anti - interference ability and is not affected by electromagnetic interference or voltage fluctuations, and performs extremely reliably in harsh industrial environments.

  
  

• Direct installation interface: TheM12x1 threaded interface is one of the standard interfaces for differential pressure indicators in the hydraulic industry and can be directly installed on most brands of dual - cartridge filters, with good interchangeability.

  
  

• High - pressure - resistant design: The valve body is usually made of high - strength steel and can withstand the system'smaximum working pressure (usually compatible with 31.5MPa or 35MPa systems), ensuring reliable sealing and no external leakage.

  
  

• Standardized electrical signal: The output is apassive dry contact (SPDT single - pole double - throw), which can be directly connected to a PLC, relay, or alarm indicator without additional signal processing circuits.

  
  

3. Typical Applications

• High - pressure filters: As the core alarm component of dual - cartridge high - pressure filters, it is used for oil pollution monitoring in high - pressure systems such as metallurgy, plastic machinery, and die - casting machines.

  
  

• System protection: It prevents the pump from running dry or the system pressure from rising abnormally due to severe clogging of the filter element, thus avoiding damage to pumps, valves, and actuators.

  
  

• Preventive maintenance: Through the differential pressure signal, "regular oil change" can be changed to "oil/filter element change as needed", optimizing maintenance costs and reducing downtime.