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English (US)

WIKA

Products
- Pressure
  - Display
    - Pressure gauges
    - Digital pressure gauges
  - Transmit
  - Switch
    - Pressure switches
    - Contact pressure gauges
  - Engineered solutions and accessories
- Temperature
  - Display
    - Dial thermometers
    - Digital indicators
  - Transmit + record
    - Thermocouples
    - Resistance thermometer
    - Temperature transmitters
  - Switch
    - Temperature switches
    - Thermometers with switch contacts
    - Temperature controllers
  - Engineered solutions and accessories
- Level
  - Display
    - Level indicators
    - Glass level gauges
  - Transmit
    - Submersible pressure sensors
    - Continuous measurement with float
  - Switch
    - Float switches
    - Optoelectronic switches
  - Engineered solutions and accessories
    - Engineered solutions - Level
    - Accessories - Level
    - External chambers
- Force
- Flow
  - Spalte1
    - Primary flow elements
  - Spalte2
    - Flow switches
  - Spalte3
    - Air flow sensors
  - Column4
    - Ultrasonic flow meters
  - Column 5
    - Magnetic-inductive flow meters
- Calibration
  - Pressure
    - Digital pressure gauges (calibration)
    - Hand-helds, calibrators
    - Pressure balances
    - Portable pressure generation
    - Precision pressure measuring instruments
  - Temperature
  - Additional products
- SF₆ gas solutions
  - Display
    - Gas density indicators
  - Transmit
    - Gas density sensors
  - Switch
    - Gas density monitors
    - Gas density switches
  - Maintenance
  - Accessories
Solutions
- Hydrogen
  - Column 1
    - Overview
    - Hydrogen Refueling Stations
  - Column 2
    - Electrolysis
    - Stationary fuel cells
  - column_49
    - Conventional H₂ production
    - Mobile Fuel Cells
  - Column 4
    - Storage and transport
  - Column 5
    - Compression
- Safety
  - Column 1
    - Overview
    - Oil and gas
  - Column 2
    - Certified products
    - ELMS overload protection
  - Column 3
    - SIL/PL
  - Column 4
    - Level sensors and switches
  - Column 5
    - Safety pressure switches
- IIoT
  - Column 1
    - Overview
    - Industries
  - Column 2
    - Challenges
    - Contact
  - Column 3
    - Expertise
  - Column 4
    - Customer benefit
  - Column 5
    - Solutions
Industries
- Industrial
- Process
  - Column 1
    - Food and beverages
    - Power generation
  - Column 2
    - Oil and gas (up-, mid- and downstream)
      - Downstream
      - Upstream
        Drilling
        Well Stimulation
        Production
      - Midstream
    - Water and wastewater
  - Column 3
    - Petrochemical industry
    - Basic materials (minerals, metals, paper)
      - Iron and steel
      - Aluminium industry
  - Column 4
    - Chemical industry
      - Methanol
      - Ammonia
  - Column 5
    - Pharmaceuticals and biotechnology
Service
- Calibration
  - Mechanical
    - Pressure
    - Force
  - Thermodynamic
    - Temperature
  - Electrical
  - Dimensional
    - Length
  - SF₆
    - Measuring instruments
    - Laboratory analysis of SF₆ & alternative gases
- Repair service
  - Pressure
  - Temperature
    - Temperature measuring instruments
  - SF₆
    - SF₆ instruments
    - Spare part service
  - Level
    - Level measuring instruments
- Installation
  - Temperature
    - Field service
- Consultancy
  - Calibration
    - Seminars
    - Calibration training courses
  - SF₆
  - Temperature
    - Infrared thermal imaging
- E-business
  - E-Cat
    - E-Cat
  - WIKA Customer Portal
    - WIKA Customer Portal
  - WIKA online shop
    - WIKA online shop
- Returns
  - Form sheets
    - Returns
- Online Tools
  - Column 2
    - Unit calculator
  - Column 3
    - Thermowell calculation software
  - Column 4
    - Apps
  - Column 5
    - WIKA Build ID
Download
- Data sheets
  - Column 1
    - Pressure
    - Calibration
  - Column 2
    - Temperature
    - SF₆ gas
  - Column 3
    - Level
  - Column 4
    - Force
  - Column 5
    - Flow
- Operating instructions
  - Column 1
    - Pressure
    - Calibration
  - Column 2
    - Temperature
    - SF₆ gas
  - Column 3
    - Level
  - Column 4
    - Force
  - Column 5
    - Flow
- Software
  - Column 1
    - Pressure
  - Column 2
    - Temperature
  - Column 3
    - Level
  - Column 4
    - Calibration
  - Column 5
    - SF₆ gas
- 3D data
  - Column 1
    - Pressure
    - SF₆ gas
  - Column 2
    - Temperature
  - Column 3
    - Level
  - Column 4
    - Force
  - Column 5
    - Calibration
- Brochures and flyers
  - Column 1
    - Company
  - Column 1
    - Products, Services
  - Column 1
    - Industries
- Technical information
  - Column 1
    - Pressure
  - Column 1
    - Temperature
  - Column 1
    - Level
  - Column 4
    - Flow
  - Column 5
    - Calibration
  - column6
    - SF6
- Questionnaires
  - Column 1
    - Pressure
  - Column 2
    - Temperature
  - Column 3
    - Level
  - Column 4
    - Flow
- Approvals
  - Column 1
    - Certificates
  - Column 2
    - Product approvals
  - Column 3
    - EU declarations of conformity
  - Column 4
    - Manufacturers information and certifications

Model A2G-40

Differential pressure switch

For ventilation and air-conditioning

Selected documents

Data sheet PV 27.41 Operating Instruction

Details Downloads Standard articles Configurator