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Model DPGS40TA Differential Pressure Gauge with Micro Switch

Brand: WIKA Alexander Wiegand SE & Co. KG
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The WIKA DPGS40TA is a differential pressure gauge that combines a mechanical indicator with an integrated micro-switch for automated process control. This versatile instrument delivers accurate, real-time differential pressure measurements while simultaneously providing a switch signal for alarm activation or system shutdown, ensuring both equipment protection and operator safety.

The WIKA DPGS40TA Differential Pressure Gauge with micro-switch control is a dependable solution for industrial settings where accurate pressure monitoring and swift automated control are vital. Its robust design, integrated micro-switch, and precise readings help safeguard critical equipment while promoting safe, efficient operations.

Key Features

  1. Integrated Micro-Switch

    • Provides an electrical signal once a predefined set point is reached.
    • Supports quick and reliable shutdown, alarm, or control actions in critical processes.
    • Helps maintain safe operational limits, protecting equipment and personnel.

  2. Robust Mechanical Design

    • Built to withstand demanding industrial environments.
    • Resistant to shock, vibration, and harsh process conditions.
    • Suitable for a wide range of pressures and media types.

  3. Accurate Measurement

    • Delivers precise differential pressure readings, essential for process optimization.
    • Mechanical display provides instant, easy-to-read local indication without relying on external power.
    • Maintains reliable performance across varying temperatures and operating conditions.

  4. Versatile Mounting and Configuration

    • Available in different pressure ranges to suit diverse industrial applications.
    • Various connection sizes and materials (e.g., stainless steel, brass) can be specified to match process requirements.
    • Can be installed in both new and existing systems with minimal disruption.

  5. Safety and Compliance

    • Designed with operator safety in mind, offering immediate visual indication and active switching.
    • May meet or exceed relevant industry standards for instrumentation (depending on model options).
    • Offers peace of mind for purchasing agents focused on reliability and compliance.

Typical Applications

  • Filtration and Pumping Systems: Monitors differential pressure across filters or pumps, activating alarms or control circuits when pressure drop indicates a potential blockage or fault.
  • Process Control in Chemical and Petrochemical Plants: Ensures precise monitoring and switching in processes where accurate pressure measurements are critical for product quality and safety.
  • Power Generation: Helps maintain operating conditions in steam, gas, or hydroelectric systems by alerting operators to pressure differentials that could lead to downtime or damage.
  • OEM Integration: Ideal for equipment manufacturers needing a compact, self-contained differential pressure device with built-in switching capability.

Benefits

  • Protective Monitoring: Prevents costly downtime or equipment damage by triggering timely interventions.
  • Cost-Effective: Combines two functions (measurement and switching) in a single device, reducing the number of instruments needed.
  • Increased Safety: Provides both local pressure indication and a micro-switch output, enhancing operator awareness and ensuring fast response to abnormal conditions.
  • Long-Term Reliability: Manufactured by WIKA, a trusted name in measurement technology, recognized for quality and durability.
Features
  • Differential pressure gauge with integrated working pressure indication and micro switch
  • Robust aluminium case with shatterproof window
  • TÜV certified functional safety through SIL certificate
  • Flow monitor with safety function in accordance with VdTÜV code of practice "Flow 100"
  • Germanischer Lloyd approval

The WIKA DPGS40TA is a differential pressure gauge that combines a mechanical indicator with an integrated micro-switch for automated process control. This versatile instrument delivers accurate, real-time differential pressure measurements while simultaneously providing a switch signal for alarm activation or system shutdown, ensuring both equipment protection and operator safety.

The WIKA DPGS40TA Differential Pressure Gauge with micro-switch control is a dependable solution for industrial settings where accurate pressure monitoring and swift automated control are vital. Its robust design, integrated micro-switch, and precise readings help safeguard critical equipment while promoting safe, efficient operations.

Key Features

  1. Integrated Micro-Switch

    • Provides an electrical signal once a predefined set point is reached.
    • Supports quick and reliable shutdown, alarm, or control actions in critical processes.
    • Helps maintain safe operational limits, protecting equipment and personnel.

  2. Robust Mechanical Design

    • Built to withstand demanding industrial environments.
    • Resistant to shock, vibration, and harsh process conditions.
    • Suitable for a wide range of pressures and media types.

  3. Accurate Measurement

    • Delivers precise differential pressure readings, essential for process optimization.
    • Mechanical display provides instant, easy-to-read local indication without relying on external power.
    • Maintains reliable performance across varying temperatures and operating conditions.

  4. Versatile Mounting and Configuration

    • Available in different pressure ranges to suit diverse industrial applications.
    • Various connection sizes and materials (e.g., stainless steel, brass) can be specified to match process requirements.
    • Can be installed in both new and existing systems with minimal disruption.

  5. Safety and Compliance

    • Designed with operator safety in mind, offering immediate visual indication and active switching.
    • May meet or exceed relevant industry standards for instrumentation (depending on model options).
    • Offers peace of mind for purchasing agents focused on reliability and compliance.

Typical Applications

  • Filtration and Pumping Systems: Monitors differential pressure across filters or pumps, activating alarms or control circuits when pressure drop indicates a potential blockage or fault.
  • Process Control in Chemical and Petrochemical Plants: Ensures precise monitoring and switching in processes where accurate pressure measurements are critical for product quality and safety.
  • Power Generation: Helps maintain operating conditions in steam, gas, or hydroelectric systems by alerting operators to pressure differentials that could lead to downtime or damage.
  • OEM Integration: Ideal for equipment manufacturers needing a compact, self-contained differential pressure device with built-in switching capability.

Benefits

  • Protective Monitoring: Prevents costly downtime or equipment damage by triggering timely interventions.
  • Cost-Effective: Combines two functions (measurement and switching) in a single device, reducing the number of instruments needed.
  • Increased Safety: Provides both local pressure indication and a micro-switch output, enhancing operator awareness and ensuring fast response to abnormal conditions.
  • Long-Term Reliability: Manufactured by WIKA, a trusted name in measurement technology, recognized for quality and durability.
Features
  • Differential pressure gauge with integrated working pressure indication and micro switch
  • Robust aluminium case with shatterproof window
  • TÜV certified functional safety through SIL certificate
  • Flow monitor with safety function in accordance with VdTÜV code of practice "Flow 100"
  • Germanischer Lloyd approval
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Specifications

Brand

Nominal Size

  • Differential Pressure indication: Ø 100 mm
  • Working Pressure indication: Ø 22 mm

Accuracy

  • Working Pressure Indication: ≤ 4 % of Span
  • Differential Pressure Indication: ≤ 2.5 % of Span (Option ≤ 1.6 %)

Scale Ranges (EN 837)

  • Working Pressure: 0 ... 25 bar
  • Differential Pressure VdTÜV Version: 0 ... 0.25 to 0 ... 2.5 bar
  • Differential Pressure SIL Version: 0 ... 0.25 to 0 ... 6 bar
  • Differential Pressure: 0 ... 0.25 to 0 ... 10 bar

Maximum Working Pressure (Stat.)

  • 25 bar

Overpressure Safety

  • Either side Max. 25 bar

Permissible Temperature

  • Storage: -40° to +70° C
  • Medium: -10° to +90° C
  • Ambient: -10° to +70° C

Ingress Protection

  • IP65 per IEC/EN 60529

Media Chamber (Wetted)

  • Aluminium, EN AC-Al Si9Cu3(Fe), Black Lacquered (Option: Stainless Steel 1.4571)

Process Connections (Wetted)

  • 2 x G 1/4 Female, Lower Mount (LM), In-Line, centre distance 26 mm

Pressure Elements (Wetted)

  • Differential Pressure: Compression springs from Stainless Steel 1.4310 and separating Diaphragm from FPM/FKM (Option: NBR, not available for VdTÜV version) Working Pressure: Bourdon Tube from Cu-Alloy

Transmission Parts (Wetted)

  • Stainless Steel 1.4301, 1.4305, 1.4310, FPM/FKM (Option: NBR)

Sealings (Wetted)

  • FPM/FKM (Option: NBR)

Movement

  • Copper Alloy

Dial

  • Differential and working Pressure indication: White dial, Black Lettering

Pointer

  • Differential and working Pressure indication: Blue Pointer

Zero Adjustment for Differential Pressure Indication

  • Via Screw in the dial

Case

  • Aluminium, EN AC-Al Si9Cu3(Fe), Black Lacquered

Window

  • Plastic, with plug Screw for zero and switch Point Adjustment (Option: Lead Sealing of the settings)

Weight

  • Approximately 1.4 kg
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Key Buying Factors

Robust
Specifically designed for demanding environments, the durable aluminum housing and shatterproof window shield the gauge from mechanical stress. This ensures a prolonged operational life, even under extreme ambient conditions.

Versatile
Combining two measurements in one unit, the gauge offers both differential pressure and working pressure indications, eliminating the need for an extra measurement point. The large 100 mm mechanical display provides clear, accurate readings—even from a distance—helping save time, effort, and cost.

Safe
With multiple certifications and approvals, this differential pressure gauge and switch meets stringent safety requirements for technical facilities. SIL 2 certification, along with compliance to VdTÜV “Flow 100” and DNV GL standards, demonstrates the instrument’s reliability and suitability for critical applications.

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Applications

Monitoring and control of filtration, flow, and level for:

  • Heat transfer oil plants
  • Boilers and pressure vessels
  • Marine boilers, bilge-water collection
  • Water and wastewater treatment plants
  • Pressure-boosting stations, heating technology, fire-extinguishing systems
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