Key facts
- Brand
- WIKA
- Model
- TR21
- Category
- Industrial Robot
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2026-11-07
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WIKA TR21 Miniature Resistance Thermometer Operating Instructions
This document provides operating instructions for the WIKA TR21 miniature resistance thermometer, specifically designed for sanitary applications. It covers the instrument's design, safety requirements, commissioning, configuration using WIKAsoft-TT software, and maintenance procedures. The manual details the detachable connection features of TR21-A and TR21-B variants that allow sensor removal without opening the process.
Read onlineWIKA TR21 specifications
| Measuring range | -30 ... +150 °C or -30 ... +250 °C |
|---|---|
| Supply voltage (4...20 mA version) | DC 10 ... 30 V |
| Switch-on delay | Max. 4 s |
| Maximum permissible autoclaving conditions | 134 °C, 3 bar abs., 100 % r. h. |
Source: WIKA TR21 Miniature Resistance Thermometer Operating Instructions
All WIKA TR21 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
Can the temperature sensor be removed without opening the process?
Yes, the detachable connection in the TR21-A and TR21-B variants enables removal of the temperature sensor without having to open the process.
From: WIKA TR21 Miniature Resistance Thermometer Operating Instructions
What is the maximum permissible autoclaving temperature?
The maximum permissible autoclaving temperature is 134 °C.
From: WIKA TR21 Miniature Resistance Thermometer Operating Instructions
What is the temperature range for the TR21 thermometer?
The TR21 thermometer measures temperatures from -30°C to +150°C or -30°C to +250°C, depending on the model variant.
From: WIKA TR21 Miniature Resistance Thermometer Operating Instructions
Can the TR21 be autoclaved?
Yes, it can be autoclaved up to 134°C, 3 bar absolute, 100% relative humidity for 20 minutes, up to 50 cycles.
From: WIKA TR21 Miniature Resistance Thermometer Operating Instructions