The WIKA A52 / R52 is a bimetallic thermometer designed for reliable temperature measurement in industrial applications. With a robust stainless-steel case and proven bimetal measuring technology, it provides accurate local temperature indication for machinery, HVAC systems and process equipment.

Typical Applications:
• Machine building and plant engineering
• Heating, ventilation and air-conditioning (HVAC) systems
• Pipelines, vessels and apparatus construction
• Industrial equipment and machinery monitoring
• Test benches and technical equipment

Not Recommended For:
• Applications requiring electronic signal transmission to PLC or control systems
• Ultra-high-precision laboratory temperature measurement

Models A52, R52 Bimetallic thermometer Data sheets

Selection Notes

• Confirm the required temperature measurement range for the application.
• Select the appropriate nominal size (typically 25 mm to 160 mm dial diameter).
• Choose the correct mounting type: axial (back mount) or radial (lower mount).
• Verify the suitable stem length and immersion depth for accurate measurement.
• Check the required process connection type (e.g., G ½, ½ NPT, etc.).

Why Choose the WIKA A52 / R52 Bimetallic Thermometer

• Cost-Effective Industrial Solution
Entry-level process thermometer ideal for standard industrial temperature measurement tasks.

• Wide Temperature Range
Available scale ranges from approximately -30 °C to +500 °C depending on configuration.

• Robust Stainless-Steel Construction
Case and stem made from stainless steel ensure durability in industrial environments.

• Flexible Mounting Options
Available in axial or radial connection designs for different installation situations.

• Maintenance-Free Operation
Proven bimetal measuring system provides long-term reliability without requiring electrical power.

FAQ

Q: What is the difference between A52 and R52?
A: The A52 version typically uses a back (axial) connection, while the R52 version uses a lower (radial) connection for different installation orientations.

Q: What temperature range can the A52 / R52 measure?
A: Depending on the selected scale, the thermometer can measure temperatures roughly between −30 °C and +500 °C.

Q: Does the thermometer require power supply?
A: No. The bimetal measuring system operates mechanically without electricity.

Q: Where is this thermometer commonly used?
A: It is widely used in machine building, HVAC systems, pipelines, vessels and industrial equipment.