Self Cleaning Filter

Looking to optimize your filtration systems? Our differential pressure gauges can be combined with switches for a self cleaning filter solution. When the gauge detects a preset differential pressure, the switch initiates a cleaning cycle, automatically backwashing the filter without manual intervention. By automatically removing build-up and debris, they prevent clogging, which ensures uninterrupted flow.

Featured Models for Self Cleaning Filters

Model 120 – Piston Type Gauge

The Model 120 is our most versatile piston-type differential pressure gauge. Designed for demanding applications, it offers full-scale accuracy of ±3/2/3% and dial scales ranging from 0-5 PSID to 0-110 PSID. Its rugged design and multiple switch options make it ideal for filters and strainer monitoring. With weather-resistant construction and over-range protection, this model ensures long-term reliability in challenging environments.

Model 122 – Entry-Level Piston Type Gauge

For cost-conscious applications, the Model 122 delivers reliable performance at a competitive price. With an accuracy of ±5% and dial scales up to 0-100 PSID, it’s well-suited for basic filtration monitoring, compressed air, and refrigerant systems. Its clamp-on electrical switch options provide simple integration, while the robust design ensures durability. This entry-level option offers excellent value for less demanding environments.

Model 121 – Advanced Piston Type Gauge

The Model 121 combines the durability of a piston-type gauge with advanced features such as terminal strip interfaces and a 4-20 mA transmitter for remote monitoring. With an accuracy of ±3/2/3% and a working pressure of up to 6000 PSIG, it’s suitable for high-performance applications. This model is ideal for filter monitoring, heat exchanger pressure drops, and pump performance testing. The optional hazardous location configurations and CE-marked switches ensure compatibility with stringent safety standards.

Model 140 – Diaphragm Type Gauge

The Model 140 features a convoluted diaphragm design and terminal strip interface, with an optional 4-20 mA transmitter for applications requiring constant monitoring.  The diaphragm provides complete separation of the process fluid between the high and low ports.   Available in a variety of scales and sizes, the Model 140’s hazardous location options and rugged construction make it reliable in critical environments.

Benefits of Mid-West Instrument Gauges for Self Cleaning Filters

Our differential pressure gauges provide unmatched performance and reliability when paired with a self cleaning filter. Key benefits include:

  • Automatic Cleaning Initiation: Adjustable switches trigger backwashing at preset differential pressures, maintaining system efficiency without manual input.
  • Extended Equipment Lifespan: Continuous monitoring prevents clogs, reducing wear and tear on filtration systems.
  • Customizable Options: Models are available with various configurations, including hazardous location approvals, multiple dial sizes, and material options.
  • Accurate Monitoring: Precision-engineered gauges ensure reliable readings for critical system adjustments.
Self Cleaning Filter

Recommended Models:

Model No. Differential Pressure Range Accuracy Working Pressure Electrical Available Specifications Installation/ Operation Manual Electrical IOM Drawing
Model 120 0-5 PSID to 0-110 PSID ±3/2/3% Up to 6,000 PSI CE / LVD, RoHS Compliant, NEMA 4X, Flying Leads / DIN Connector, Class 1-Div. 1, Class 1-Div. 2
Model 122 0-5 PSID to 0-110 PSID ±5% 3,000 PSI CE / LVD, RoHS Compliant
Model 140 0-50" H2O to 0-100 PSID 0-50" H2O to 0-399" H2O
±5%
0-15 PSID to 0-100 PSID
±3/2/3%
Up to 3,000 PSI CE / LVD, RoHS Compliant, NEMA 4X, Terminal Strip, Class 1-Div. 1, Class 1-Div. 2, 4-20mA Transmitter
Model 121 0-5 PSID to 0-100 PSID ±3/2/3% Up to 6,000 PSI CE / LVD, RoHS Compliant, NEMA 4X,Terminal Strip, Class 1-Div. 2, 4-20mA Transmitter N/A