Industrial Pressure Gauges

45APE Series Mechanical Industrial Pressure Gauges

The 45APE Series Mechanical Industrial Pressure Gauges are durable and precise instruments designed to provide accurate pressure measurements in demanding industrial applications. These gauges feature a robust mechanical design that operates without the need for external power, ensuring reliable performance even in remote or challenging conditions. Ideal for monitoring systems like hydraulics, pneumatics, and gas, the 45APE series offers a clear, easy-to-read display and a wide range of pressure measurement capabilities. Their sturdy construction and dependable accuracy make them a valuable tool for maintaining safety and efficiency in various industrial settings.

The 45APE Series is a line of industrial-grade pressure gauges designed for precision measurement, durability, and adaptability across various industries. These gauges are engineered to deliver accurate and consistent pressure readings under challenging conditions, making them ideal for demanding applications.

Industrial Pressure Gauges

45APE Series - Mechanical Industrial Pressure Gauges

The 45APE Series gauge instrument is a mechanical gauge for pressure indication. It includes two adjustable SPDT switches.

Combination indicating gauge with independent low and high snap-acting switches
Field-adjustable and highly visible low and high pressure trip point indicators
Dual-sector geared movement allows for full-scale indication and set point control
Panel- and surface-mount versions available
Latching control relay versions available

The 45APE Series utilizes a bourdon tube sensing unit with a stainless steel dual-sector geared movement. Each of the sectors drives separate pointers when pressure is applied to the bourdon tube. The indicating pointer (visible pointer) shows actual pressure reading, including below and beyond the low and high trip points. The low and high trip points are adjustable independently on the gauge front lens. The switch operator pointer (behind the dial) is calibrated to follow the indicating pointer. The low and high trip point indicators arrest the switch operator pointer. As pressure decreases or increases through the principle of lost motion, the respective snap-switch is tripped.

The 45APE Series models are widely used in applications requiring pressure indication and Form C low and high pressure switches.


Basic Models

  • 45APE Series gauge instrument

    • Surface mount (square case) version

  • 45APEF Series gauge instrument

    • Panel Mount (round Case) Version

    Key Features


    1. Mechanical Operation

  • No electrical power required.
  • Ensures reliability in remote or power-limited locations.

    • 2. High Durability

  • Constructed with robust materials to endure vibration, temperature extremes, and corrosive substances.
  • Designed for long service life even in harsh industrial environments.

    • 3. Precision Measurement

  • High accuracy ensures precise readings critical for monitoring and control.
  • Calibrated to meet industry standards.

    • 4. Wide Compatibility

  • Available in various configurations to fit diverse applications, including threaded and flanged connections.

    • 5. Versatility

  • Suitable for use in oil and gas, petrochemical, power generation, manufacturing, and other industrial sectors.

    • 6. Versatility

    Technical Specifications


    Pressure Range:

  • Broad spectrum from vacuum pressures to high-pressure systems.
  • Typical ranges include 0-1 bar to 0-400 bar, with custom options available.

    • Dial Size:

  • Standard sizes include 63mm, 100mm, and 150mm for easy readability.

    • Accuracy Class:

  • Generally complies with ±1% of full scale (ASME Grade 1A) or better.

    • Material Options:

  • Case: Stainless steel, brass, or other corrosion-resistant materials
  • Window: Hardened glass or polycarbonate for durability and clarity.
  • Bourdon Tube: Stainless steel or copper alloys for excellent pressure response.

    • Connection Options:

  • Bottom or back entry.
  • Threaded connections in standard sizes (e.g., 1/4", 1/2" NPT, BSP).

    • Temperature Range:

  • Operating range typically -40°C to +65°C.
  • High-temperature-resistant models available.

    • Mounting Styles:

  • Direct, panel, or surface mount options to suit different setups.

    • Applications


    1. Oil and Gas:

  • Monitoring pressure in pipelines, compressors, and storage tanks.

    • 2. Petrochemical Industry:

  • Measuring pressure in reactors, distillation columns, and transfer systems.

    • 3. Power Plants:

  • Pressure monitoring in boilers, turbines, and steam systems.

    • 4. Manufacturing:

  • Hydraulic and pneumatic system pressure monitoring.

    • 5. Water Treatment:

  • Ensuring accurate pressure levels in filtration and distribution systems.

    • 6. HVAC Systems:

  • Monitoring refrigerant and system pressure.

    • Benefits


    1. Cost-Effective:

  • Long-lasting design reduces maintenance and replacement costs.

    • 2. Safety:

  • Built-in pressure relief and overload protection in certain models.

    • 3. Customization:

  • Tailored specifications ensure compatibility with unique operational needs.

    • 4. Reliability:

  • Performs consistently in extreme environments, ensuring system uptime.