WIKA model 55 bimetal dial thermometer, back mount (axial), NS 160, scale range 0 to +250 °C, process connection G1/2 B at the case back. Case, stem and bayonet ring fully stainless steel per EN 13190, accuracy class 1. Bimetal coil measuring element, 150 mm stem. For panel and direct back-of-dial temperature indication on tanks, pipework and process lines in chemical, water and energy plant.
| Model | 55 (bimetal), back mount (axial) |
| Nominal size | NS 160 (160 mm dial) |
| Connection location code | A5501 (back mount, axial) |
| Scale range | 0 to +250 °C |
| Accuracy | class 1 per EN 13190 |
| Case / stem / ring | stainless steel 304 (316L optional) |
| Measuring element | bimetal coil |
| Stem length | 150 mm (63...1000 mm to order) |
| Stem diameter | 6 / 8 / 10 mm |
| Process connection | G1/2 B male, back mount (axial) |
| Window | instrument glass |
| Ingress protection | IP65 per IEC/EN 60529 (IP66 optional) |
| Standard | EN 13190 |
| Material | Case, stem and bayonet ring fully stainless steel (304); bimetal coil measuring element |
| Pressure rating | N/A (temperature instrument) |
| Temperature range | 0 to +250 °C scale range |
| IP rating | IP65 |
| Primary standard | EN 13190 |
| Standard size | 160 mm |
| Thread standard | G1/2 B male (EN 837-1), back mount |
| Dimensions | NS 160 mm dial; 150 mm stem; back-mount (axial) connection |
| MOQ | 1 |
WIKA model 55 back-mount bimetal thermometers interchange with equivalent EN 13190 all-stainless axial bimetal dial thermometers (Ashcroft / Trerice / WIKA 54/A52) at the same nominal size, stem length, scale range and process connection. Confirm mount (back / lower), stem length and thread before ordering.