The WIKA A43 is a mechanical temperature measuring instrument developed for basic temperature indication in heating technology. It operates without an external power supply, providing a direct reading of temperature on its dial.
Its modular design allows different combinations of case material, nominal dial size, scale range, and stem length while maintaining standard installation dimensions. A thermowell is included in the standard delivery, with a maximum permissible operating pressure of 6 bar for the thermowell.
Key Features
- Measuring principle: Mechanical bimetal temperature measurement.
- Accuracy: Class 2 according to EN 13190.
- Scale ranges: Available ranges span from -30 to +120 °C, depending on configuration.
- Thermowell included: Standard delivery includes a thermowell for installation.
- Thermowell pressure rating: Up to 6 bar maximum operating pressure.
- Flexible configuration: Multiple case materials, dial sizes, measuring ranges, and stem lengths.
- Cost-effective design: Intended for routine temperature indication in heating systems.
- No external power required: Provides direct local temperature readings.
Suitable Applications
- Heating systems: Monitoring water temperature in heating circuits.
- Hot-water tanks: Checking stored-water temperature.
- Solar thermal collectors: Local indication of temperatures in solar heating installations.
- Heat transfer stations: Monitoring temperatures in heat distribution and transfer equipment.
- Building services: Routine temperature checks in suitable heating equipment and installations.
These are the applications identified for the A43 by WIKA.
Technical Highlights & Selection Considerations
Before ordering the WIKA A43, confirm the following configuration details:
- Temperature range: Select a scale appropriate for the expected operating temperature.
- Dial size: Choose a suitable nominal size for visibility and installation space.
- Stem length: Match the required insertion depth and mounting arrangement.
- Case material: Confirm whether a galvanised steel case or plastic case is required.
- Thermowell compatibility: Verify the installation dimensions and ensure the operating pressure does not exceed the thermowell's specified limit.
- Process connection and installation: Confirm the connection dimensions and mounting requirements against the applicable datasheet and order configuration.
Important: The A43 is designed primarily for heating applications. For high-pressure industrial processes, aggressive media, or severe vibration, check whether a more suitable process thermometer is required.
FAQ
Q1: What is the WIKA A43 used for?
It is used for local temperature indication in heating systems, hot-water tanks, solar collectors, and heat transfer stations.
Q2: Does the WIKA A43 require electrical power?
No. It is a mechanical bimetal thermometer and does not need an external power supply for local indication.
Q3: What is the measuring range of the A43?
WIKA lists selectable scale ranges spanning from -30 to +120 °C. The exact available range depends on the selected configuration.
Q4: Is a thermowell included with the A43?
Yes. WIKA specifies a thermowell as part of the standard delivery. Its maximum operating pressure is 6 bar; confirm suitability for the actual installation.
Q5: What information is needed to order the correct model?
Provide the required temperature range, dial size, stem length, case material, and installation dimensions. If you have an existing unit, sharing its full model code or a nameplate photo can help verify the replacement.
