WIKA TR21 Miniature Resistance Thermometer Operating Instructions

Operating instructions for the WIKA TR21 miniature resistance thermometer designed for sanitary applications, covering configuration, safety, and…

Brand: WIKA
Category: Industrial Robot
Document type: User Manual
Language: English
Pages: 116
File format: PDF
File size: 3.2 MB
Published: 07 November, 2026
Updated: 07 November, 2026
Model: TR21
MD5 checksum: 181B214FF33096508E2898B6442BD9E9
PDF: WIKA TR21 Miniature Resistance Thermometer Operating Instructions PDF

About this manual

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.

What's inside

General information
Design and function
Safety
Commissioning and operation
Configuration
Faults
Maintenance, cleaning and calibration
Specifications

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.

Frequently asked questions

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.

What is the maximum permissible autoclaving temperature?

The maximum permissible autoclaving temperature is 134 °C.

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