Resistance thermometers of this series are designed for screw-fitting directly into the process, mainly in vessels and pipelines. These thermometers are suitable for liquid and gaseous media under moderate mechanical load and normal chemical conditions. The protection tube made of stainless steel is all welded and screwed into the connection head. An optional measuring insert (tubular design) can be removed without taking out the complete sensor from the plant. This enables inspection, measuring equipment monitoring or, when servicing is necessary, replacement while the plant is running.

Insertion length, process connection, protection tube design, connection head, type and number of sensors, accuracy and connection method can each be selected to suit the respective application.

A large number of different explosion-protected approvals are available for the TR11-C.

Optionally we can fit analogue or digital transmitters from the WIKA range into the connection head of the TR11-C.

The model TR20 resistance thermometer is used for temperature measurement in sanitary applications. It features a flush NEUMO BioControl^®connection and is therefore particularly suited to applications where a thermowell which extends into the process medium is either not possible or not desired. For increased hygiene requirements for those elements in contact with the surrounding environment, a stainless steel head is available in an optimised hygienic design.

The TR20 in combination with the block flange (low-profile design) is especially suitable for temperature measurement in mixing and agitating vessels with a wiper. The result is a flush-mounted instrumentation at the vessel wall. Thus an easy removal of the process medium from the inner wall is enabled by means of a rotating wiper. This results in a good homogenous mixture of the components and, at the same time, accurate temperature measurement in a mixing vessel.

The model TR21-B resistance thermometer provides temperature measurement in sanitary applications and can be used for the measurement of liquid and gaseous media in the range of -30 ... +150 °C [-22 ... +302 °F]. For use in hazardous areas, intrinsically safe versions are available.

The connection ends are smooth and prepared for orbital welding. The process connections meet the stringent requirements, in terms of materials and design, of hygienic measuring points. All electrical components are protected against moisture (IP67 or IP69K).

The resistance thermometer is available with direct sensor output or integrated transmitter, which can be configured individually via the WIKAsoft-TT PC configuration software. Measuring range, dampening, error signalling per NAMUR NE 043 and tag no. can be adjusted.

For easy calibration or maintenance, the sensor is interchangeable without having to open the process. Thus hygiene risks can be minimised and downtimes can be reduced.

The spring loading, integrated into the union nut, guarantees the contact between the sensor tip and the bottom of the protection tube and thus ensures a short response time and lasting high accuracy. Insertion length, process connection, sensor and connection method can each be selected for the respective application within the ordering information. The electrical connection is made via an M12 x 1 circular connector.

For applications requiring the sterilisation of the instrument in autoclaves, an especially temperature-resistant instrument version is available.

Resistance thermometers of these series are used as universal thermometers for the measurement of liquid and gaseous media in the range -50 ... +250 °C [-58 ... +482 °F].

They can be used for pressures up to 140 bar [2,030 psi] with 3 mm [0.12 in] protection tube diameters, up to 270 bar [3,916 psi] with 6 mm [0.24 in] protection tube diameters, and up to 400 bar [5,801 psi] with 8 mm [0.31 in] protection tube diameters, depending on the instrument version. All electrical components are protected against splash water and designed to withstand vibration (8 g, depending on instrument version).

The TR36 resistance thermometer consists of a probe tube, which can be fixed into the process using a permanently welded threaded connection or a compression fitting. A version without process connection is also available.

The instrument version with integrated transmitter can be configured individually via the WIKAsoft-TT PC configuration software. Measuring range, dampening, error signalling per NAMUR NE 043 and tag no. can be adjusted.

The model TF35 threaded thermometer is used for temperature measurement of liquid and gaseous media in the range -50 ... +250 °C [-58 ... +482 °F].

The integrated thermowell with threaded connection enables direct installation into the process. Depending on the requirements, the thermowell can be selected from brass or stainless steel. By default, the TF35 thermometer can be used for pressures up to 50 bar [725 psi]. The directly mounted coupler connector ensures simple commissioning of the thermometer.

Pipe surface resistance thermometers of the TR57-M series are used for non-invasive temperature measurement on pipelines.

These resistance thermometers can be retrofitted at any time to an existing pipe, without opening or interrupting the process. The resistance thermometers can be used in a temperature range from -20 ... +150 °C [-4 ... 302 °F].

The fixing of the measuring insert onto the pipeline is achieved using a pipe adapter. The measuring insert is spring-loaded and the sensor tip is isolated against the ambient temperature through the silicon lining of the pipe adapter.

The measuring insert can be removed for calibration.