Description
WIKA Models A52 and R52 Bimetal Thermometer Technical Data and Engineering Selection Guide
WIKA Models A52 and R52 Bimetal Thermometer is supplied by SANTAN for replacement, new projects and complete model-code review. The verified product-family information below supports preliminary selection, installation planning and quotation preparation.
Verified Product-Family Specifications
| Measurement principle | Mechanical bimetal temperature indication |
|---|---|
| Construction standard | Manufactured in accordance with EN 13190 |
| Case | Robust stainless-steel construction for industrial environments |
| Connection variants | A52 axial/back connection or R52 radial/lower connection |
| Accuracy | Class 1 for applicable nominal sizes from 60 mm |
| Mounting | Multiple nominal sizes, stem lengths and process-connection options |
| Operation | Power-free and maintenance-free local indication |
| Applications | Hydraulics, compressors, cooling circuits, HVAC, heat exchangers and test equipment |
Published values describe the product family and remain configuration dependent. Final range, accuracy, materials, pressure or temperature limits, process connection, output, approvals and accessories must be checked against the selected WIKA order code and current data sheet.
Best-Fit Application
Use the A52/R52 as an economical local indicator on machinery, utility and building-service systems that do not require electrical transmission. Choose axial A52 or radial R52 orientation from the actual viewing direction and available installation space.
Selection and Installation Notes
The sensing stem must be immersed far enough into the process without contacting the pipe wall. Select a thermowell when pressure, velocity, corrosion, replacement during operation or plant safety requires separation. Verify stem diameter, insertion length, connection and wake-frequency suitability as one assembly.
Quotation and Selection Data Required
| Measurement | Minimum, normal and maximum temperature; scale units and required accuracy |
|---|---|
| Mechanical | Insertion length, stem diameter, process connection, orientation and dial size |
| Process | Medium, pressure, flow velocity, vibration and corrosion conditions |
| Protection | Thermowell/protection tube, material, wake-frequency calculation and response requirement |
| Electrical | For RTD models: element, wiring, transmitter/output, connector and Ex approval |
| Documentation | Tagging, calibration points, certificates, drawings and inspection requirements |
Related Engineering Resources
- Temperature sensor selection guide
- How thermowells protect sensors
- WIKA Model 55 process bimetal thermometer
- WIKA bimetal dial thermometer
- WIKA TR34 miniature RTD
- Temperature measurement products
Official Manufacturer Reference
WIKA official A52 / R52 product page and current data sheet TM 52.01
Request a Quote
Send the complete WIKA model code, quantity and application data to sales@santanfluid.com. For a faster engineering review, use WhatsApp: +86 136 9022 3185 (China) or +62 823 1767 3750 (Indonesia). SANTAN will confirm the selectable configuration before quotation; no online payment is required.
Standard Technical Specification Summary
Use these fields for preliminary selection. Final values depend on the complete manufacturer model code and selected options.
| Model | WIKA Models A52 and R52 Bimetal Thermometer |
|---|---|
| Measurement Range | −200 … +600 °C |
| Accuracy | Class 1 for applicable nominal sizes from 60 mm |
| Process Connection | ½ NPT / G½ / flange / compression |
| Output Signal | 4–20 mA HART / PROFIBUS-PA / FF |
| Certifications | Confirm hazardous-area, functional-safety, sanitary, marine or custody-transfer approvals by model code. |
| Application Industries | Application-dependent; confirm medium, process conditions and industry requirements. |
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