# Resistance thermometer — TR55

> Resistance thermometer with spring-loaded tip for bearing temperature measurement on pumps, gears, and motors under dry ambient conditions.

- Catalog code: tr55
- Model: TR55
- Category: Temperature measurement › Resistance thermometers
- Product page: https://avigan.com.ua/wika/en/products/tr55
- Price: on request
- Supplier: AVIGAN (TOV VIKA Prylad), official WIKA partner in Ukraine

## Overview

The model TR55 resistance thermometer is ideally suited for the measurement of surface temperature at bearing shells on pumps, gears or motors under dry ...

## Applications

- Bearing temperature measurement on:
- Pumps
- Gears
- Motors

## Special features

- Sensor ranges from -50 ... +500 °C [-58 ... +932 °F]
- Compact design
- Spring-loaded tip
- Explosion-protected versions

## Specifications

| Parameter | Value |
|---|---|
| model | TR55 |
| product family | TR |
| short description | Resistance thermometer with spring-loaded tip for bearing temperature measurement on pumps, gears, and motors under dry ambient conditions. |
| subcategory | Spring-loaded surface thermometer |
| certifications | GOST; KazInMetr; MTSCHS; BelGIM; UkrSEPRO; Uzstandard; RoHS; EAC; EMC; INMETRO; NEPSI; KCs-KOSHA; PESO; DNOP-MakNII; CE |
| explosion protection | [Ex ia IIC T1 ... T6 Ga]; [Ex ia IIIC T125 ... T65 °C Da]; [Ex ib IIC T3 ... T6 Gb]; [II 1G Ex ia IIC T1 ... T6 Ga]; [II 2G Ex ia IIC T1 ... T6 Gb]; [II 1D Ex ia IIIC T125 ... T65 °C Da]; [II 2D Ex ia IIIC T125 ... T65 °C Db]; [II 3G Ex nA IIC T1 ... T6 Gc X]; [II 3D Ex tc IIIC T440 ... T80 °C Dc X]; [Ex ia IIC T1 ... T6 Gb]; [Ex ia IIIC T125 ... T65 °C Db]; [0 Ex ia IIC T3/T4/T5/T6]; [1 Ex ib IIC T3/T4/T5/T6]; [DIP A20 Ta 65 °C/Ta 95 °C/Ta 125 °C]; [DIP A21 Ta 65 °C/Ta 95 °C/Ta 125 °C]; [Ex nA IIC T6 ... T1]; [DIP A22 Ta 80 ... 440 °C]; [Ex ia IIC T3 ... T6 Ga]; [Ex ib IIIC T125 ... T65 °C Db]; [Ex ia IIC T3 ~ T6]; [Ex ib IIC T3 ~ T6]; [Ex nA IIC T1 ~ T6 Gc]; [Ex ia IIC T4 ... T6]; [Ex ib IIC T4 ... T6]; [II 1G Ex ia IIC T3, T4, T5, T6 Ga]; [II 2G Ex ia IIC T3, T4, T5, T6 Gb]; [II 1D Ex ia IIIC T65, T95, T125 °C Da]; [II 2D Ex ib IIIC T125 ... T65 °C Db]; ATEX: [II 1G Ex ia IIC T1 ...T6 Ga] [II 2G Ex ia IIC T1 ...T6 Gb] [II 1D Ex ia IIIC T125 ...T65 °C Da] [II 2D Ex ia IIIC T125 ...T65 °C Db] [II 3G Ex nA IIC T1 ...T6 Gc X] [II 3D Ex tc IIIC T440 ...T80 °C Dc X]; IECEx: [Ex ia IIC T3 ...T6 Ga] [Ex ib IIC T3 ...T6 Gb] [Ex ia IIIC T125 ...T65 °C Da] [Ex ib IIIC T125 ...T65 °C Db]; EAC: [0 Ex ia IIC T3/T4/T5/T6] [1 Ex ib IIC T3/T4/T5/T6] [DIP A20Ta 65 °C/Ta 95 °C/Ta 125 °C] [DIP A21Ta 65 °C/Ta 95 °C/Ta 125 °C] [DIP A22Ta 80 ... 440 °C]; INMETRO: [Ex ia IIC T3 ...T6 Ga] [Ex ib IIC T3 ...T6 Gb] [Ex ia IIIC T125 ...T65 °C Da] [Ex ib IIIC T125 ...T65 °C Db]; NEPSI: [Ex ia IIC T3 ~ T6] [Ex ib IIC T3 ~ T6]; KCs - KOSHA: [Ex ia IIC T4 ...T6] [Ex ib IIC T4 ...T6]; PESO: [Ex ia IIC T1 ...T6 Ga] [Ex ib IIC T3 ...T6 Gb]; DNOP - MakNII: [II 1G Ex ia IIC T3, T4, T5, T6 Ga] [II 2G Ex ia IIC T3, T4, T5, T6 Gb] [II 1D Ex ia IIIC T65, T95, T125 °C Da] [II 2D Ex ib IIIC T125 ...T65 °C Db]; Ex iA IIC T1...T6 Ga; Ex iA IIC T1...T6 Gb; Ex iA IIIC T125...T65℃ Da; Ex iA IIIC T125...T65℃ Db; Ex nA IIC T1...T6 Gc X; Ex tc IIIC T440...T80℃ Dc X; Ex iA IIC T3...T6 Ga; Ex ib IIC T3...T6 Gb; DIP A20 Ta 65℃/Ta 95℃/Ta 125℃; DIP A21 Ta 65℃/Ta 95℃/Ta 125℃; Ex nA IIC T6...T1; DIP A22 Ta 80...440℃; Ex ia IICT4...T6; Ex ib IICT4...T6; Ex ia IICT1...T6 Ga; Ex ib IICT3...T6 Gb; II 1G Ex ia IICT3,T4,T5,T6 Ga; II 2G Ex ia IICT3,T4,T5,T6 Gb; II 1D Ex ia IICT65,T95,T125°CDa; II 2D Ex ib IICT125...T65°CDb |
| ambient temp | -40 … 80 °C |
| ip rating | IP65 |
| languages in datasheet | en |
| temperature ranges | -50 … 500 °C; -50 … 250 °C; -30 … 300 °C; 0 … 150 °C |
| sensor type | Pt100, Pt1000 |
| sensor class | B |
| probe diameter mm | 3 |
| probe material | Stainless steel |
| has thermowell | false |
| thermowell material | Stainless steel |
| process connections | G ¼ B; G ⅜ B; G ½ B; ¼ NPT; ½ NPT; G¼B; G⅜B; G½B; ¼NPT; ½NPT; G 1/4 B; G 3/8 B; G 1/2 B; 1/4 NPT; 1/2 NPT |
| process temp | -40 … 600 °C |
| output signal | HART; 4-20mA; 4-20 mA; 0-10V |
| electrical connection | Connection head BSZ or JS |

## Datasheet tables

| Logo | Description | 3 | Country |
|---|---|---|---|
|  | EU declaration of conformity ■ EMCdirective 1) | European Union |  |
|  | ■ ATEX directive (option) Hazardous areas - Ex i Zone 0 gas Zone 1 gas Zone 20 dust Zone 21 dust - Ex n 2) Zone 2 gas Zone 22 dust IECEx (option) (in conjunction with ATEX) Hazardous areas - Ex i Zone 0 gas [Ex ia IIC T1 ...T6 Ga] Zone 1 gas [Ex ia IIC T1 ...T6 Gb] | [II 1G Ex ia IIC T1 ...T6 Ga] [II 2G Ex ia IIC T1 ...T6 Gb] [II 1D Ex ia IIIC T125 ...T65 °C Da] [II 2D Ex ia IIIC T125 ...T65 °C Db] [II 3G Ex nA IIC T1 ...T6 Gc X] [II 3D Ex tc IIIC T440 ...T80 °C Dc X] | International |
|  | EAC (option) | Eurasian |  |
|  | Hazardous areas - Ex i Zone 0 gas [0 Ex ia IIC T3/T4/T5/T6] Zone 1 gas [1 Ex ib IIC T3/T4/T5/T6] Zone 20 dust [DIP A20Ta 65 °C/Ta 95 °C/Ta 125 °C] Zone 21 dust [DIP A21Ta 65 °C/Ta 95 °C/Ta 125 °C] - Ex n Zone 2 gas [Ex nA IIC T6 ...T1] Zone 22 dust | [DIP A22Ta 80 ... 440 °C] | Economic Community |
|  | INMETRO (option) Hazardous areas - Ex i Zone 0 gas Zone 1 gas Zone 20 dust Zone 21 dust | [Ex ia IIC T3 ...T6 Ga] [Ex ib IIC T3 ...T6 Gb] [Ex ia IIIC T125 ...T65 °C Da] [Ex ib IIIC T125 ...T65 °C Db] | Brazil |
|  | NEPSI (option) Hazardous areas - Ex i Zone 0 gas Zone 1 gas | [Ex ia IIC T3 ~ T6] [Ex ib IIC T3 ~ T6] | China |

| Logo | Description | Country |
|---|---|---|
|  | KCs - KOSHA (option) Hazardous areas - Ex i Zone 0 gas [Ex ia IIC T4 ...T6] | South Korea |
| - | Zone 1 gas [Ex ib IIC T4 ...T6] PESO (option) Hazardous areas - Ex i Zone 0 gas [Ex ia IIC T1 ...T6 Ga] Zone 1 gas [Ex ib IIC T3 ...T6 Gb] | India |
|  | DNOP - MakNII (option) Hazardous areas - Ex i Zone 0 gas [II 1G Ex ia IIC T3, T4, T5, T6 Ga] Zone 1 Gas [II 2G Ex ia IIC T3, T4, T5, T6 Gb] Zone 20 dust [II 1D Ex ia IIIC T65, T95, T125 °C Da] Zone 21 dust [II 2D Ex ib IIIC T125 ...T65 °C Db] | Ukraine |
|  | GOST (option) Metrology, measurement technology | Russia |
|  | KazInMetr (option) Metrology, measurement technology | Kazakhstan |
| - | MTSCHS (option) Permission for commissioning | Kazakhstan |
|  | BelGIM (option) Metrology, measurement technology | Belarus |
|  | UkrSEPRO (option) Metrology, measurement technology | Ukraine |
|  | Uzstandard (option) Metrology, measurement technology | Uzbekistan |

### Connection method

| Single elements | 1 x 2-wire 1 x 3-wire 1 x 4-wire |
|---|---|
| Dual elements | 2 x 2-wire 2 x 3-wire 2 x 4-wire 2) |

### Accuracy class / Range of use of the sensor per EN 60751

| Class | Sensor construction Thin-film |
|---|---|
| Class B | -50 ...+500 °C -50 ...+250 °C |
| Class A 3) | -30 ...+300 °C |
| Class AA 3) | 0 ... 150 °C |

| Model | Material | Cable entry thread size | Ingress protection (max.) 1) | Cap | Surface | Connection to neck tube |
|---|---|---|---|---|---|---|
| JS | Aluminium | M16 x 1.5 2) | IP65 | Cover with 2 screws | Blue, lacquered 4) | M24 x 1.5,½NPT |
| BS | Aluminium | M20 x 1.5 2) | IP65 3) | Flat cover with 2 screws | Blue, lacquered 4) | M24 x 1.5,½NPT |
| BSZ | Aluminium | M20 x 1.5 2) | IP65 3) | Spherical hinged cover with cylinder head screw | Blue, lacquered 4) | M24 x 1.5,½NPT |
| BSZ-H | Aluminium | M20 x 1.5 2) | IP65 3) | Raised hinged cover with cylinder head screw | Blue, lacquered 4) | M24 x 1.5,½NPT |
| BSS | Aluminium | M20 x 1.5 2) | IP65 | Spherical hinged cover with clamping lever | Blue, lacquered 4) | M24 x 1.5,½NPT |
| BSS-H | Aluminium | M20 x 1.5 2) | IP65 | Raised hinged cover with clamping lever | Blue, lacquered 4) | M24 x 1.5,½NPT |
| BVS | Stainless steel | M20 x 1.5 2) | IP65 | Precision-cast screw-on lid | Blank, electropolished | M24 x 1.5 |
| BSZ-K | Plastic | M20 x 1.5 2) | IP65 | Spherical hinged cover with cylinder head screw | Black | M24 x 1.5 |
| BSZ-HK | Plastic | M20 x 1.5 2) | IP65 | Raised hinged cover with cylinder head screw | Black | M24 x 1.5 |

| 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|
| Model | Explosion protection |  |  |  |  |
|  | Without | Ex i (gas) Zone 0, 1, 2 | Ex i (dust) Zone 20, 21, 22 | Ex nA (gas) Zone 2 | Ex tc (dust) Zone 22 |
| JS | x | x | x | - | - |
| BS | x | x | - | - | - |
| BSZ | x | x | x | x | x |
| BSZ-H | x | x | x | x | x |
| BSS | x | x | - | - | - |
| BSS-H | x | x | - | - | - |
| BVS | x | x | - | - | - |
| BSZ-K | x | x | - | - | - |
| BSZ-HK | x | x | - | - | - |

| Cable entry | Cable entry thread size |
|---|---|
| Standard cable entry 1) | M20 x 1.5 |
| Plastic cable gland (cable Ø 6 ... 10 mm) 1) | M20 x 1.5 |
| Nickel-plated brass cable gland (cable Ø 6 ... 12 mm) | M20 x 1.5 |
| Stainless steel cable gland (cable Ø 7 ... 12 mm) | M20 x 1.5 |

| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|
| Cable entry | Colour | Ingress protection (max.) 2) | Min./max. ambient temperature | Explosion protection |  |  |  |  |
|  |  |  |  | without | Ex i (gas) Zone 0, 1, 2 | Ex i (dust) Zone 20, 21, 22 | Ex nA (gas) Zone 2 | Ex tc (dust) Zone 22 |
| Standard cable entry 1) | Blank | IP65 | -40 ...+80 °C | x | x | - | - | - |
| Plastic cable gland 1) | Black or grey | IP66 3) | -40 ...+80 °C | x | - | - | - | - |
| Plastic cable gland, Ex e 1) | Light blue | IP66 3) | -20 ...+80 °C (standard) -40 ...+70 °C (option) | x | x | x | - | - |
| Plastic cable gland, Ex e 1) | Black | IP66 3) | -20 ...+80 °C (standard) -40 ...+70 °C (option) | x | - | - | x | x |
| Brass cable gland, nickel-plated | Blank | IP66 3) | -60 4) / -40 ...+80 °C | x | - | - | - | - |
| Brass cable gland, nickel-plated, Ex e | Blank | IP66 3) | -60 4) / -40 ...+80 °C | x | x | x | x | x |
| Stainless steel cable gland | Blank | IP66 3) | -60 4) / -40 ...+80 °C | x | x | x | - | - |
| Stainless steel cable gland, Ex e | Blank | IP66 3) | -60 4) / -40 ...+80 °C | x | x | x | x | x |

| First index number | Degree of protection / short description | Test parameter |
|---|---|---|
| 5 | Dust-protected | per IEC/EN 60529 |
| 6 | Dust-tight | per IEC/EN 60529 |

| Second index number | Degree of protection / short description | Test parameter |
|---|---|---|
| 4 | Protected against splash water | per IEC/EN 60529 |
| 5 | Protected against water jets | per IEC/EN 60529 |
| 6 | Protected against strong water jets | per IEC/EN 60529 |
| 7 1) | Protected against the effects of temporary immersion in water | per IEC/EN 60529 |
| 8 1) | Protected against the effects of continuous immersion in water | by agreement |

### Output signal 4 ... 20 mA, HART ® protocol

| Transmitter (selectable versions) | Model T15 | Model T32 | Model T91.10 | Model T91.20 |
|---|---|---|---|---|
| Data sheet | TE 15.01 | TE 32.04 | TE 91.01 | TE 91.01 |
| Output |  |  |  |  |
| ■ 4 ...20mA | x | x | - | x |
| ■ 0 ...10V | - | - | x | - |
| ■ HART ® protocol | - | x | - | - |
| Connection method |  |  |  |  |
| ■ 1 x 2-wire | x | x | x 1) | x |
| ■ 1 x 3-wire | x | x | x | - |
| ■ 1 x 4-wire | x | x | - | - |
| Measuring current | < 0.2mA | < 0.3mA | 0.8 ...1mA | 0.8 ...1mA |
| Explosion protection | Optional | Optional | - | - |

| Connection head | T15 | T32 | T91.10 | T91.20 |
|---|---|---|---|---|
| JS | - | - | - | ○ |
| BS | ○ | - | ○ | - |
| BSZ, BSZ-K | ○ | ○ | ○ | - |
| BSZ-H, BSZ-HK | ● | ● | ● | - |
| BSS | ○ | ○ | ○ | - |
| BSS-H | ● | ● | ● | - |
| BVS | ○ | ○ | ○ | - |

| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|
| Support tube | Process connection | Maximum possible insertion length A 1) in mmwith probe length FL |  |  |  |  |  |  |  |
| Ø inmm | 65 | 75 | 80 | 85 | 105 | 125 | 230 | 250 |  |
| 6 or 8 | G¼B | 35 | 45 | 50 | 55 | 75 | 95 | 200 | 220 |
|  | G⅜B | 35 | 45 | 50 | 55 | 75 | 95 | 200 | 220 |
|  | G½B | 35 | 45 | 50 | 55 | 75 | 95 | 200 | 220 |
|  | ¼NPT | 20 | 30 | 35 | 40 | 60 | 80 | 185 | 205 |
|  | ½NPT | 20 | 30 | 35 | 40 | 60 | 80 | 185 | 205 |

### Specifications, removable design

| Description | The measuring insert is spring-mounted with two screws into the connection head and can simply be removed for calibration purposes.The thermowell itself can thus remain in the process.The terminal block for electrical connection is connected to the probe tube of the measuring insert. |
|---|---|
| Diameter (for thermowellØ=6mm) | 3mm |
| Diameter (for thermowellØ=8mm) | 6mm |
| Operating temperatures (dependent upon the sensor design type and the accuracy class) | Min: -40 °C Max: +600 °C |
| Built-in measuring insert model | TR10-A |

| Certification type | Measurement accuracy | Material certificate |
|---|---|---|
| 2.2 test report | x | x |
| 3.1 inspection certificate | x | x |

## Documents

- [ds_te6055_en_co_952717](https://avigan.com.ua/wika/docs/wika/ds_te6055_en_co.pdf) — PDF, 1272 KB, en

## Configurator

This product has an interactive configurator on its product page.

```
TR55-8-M- -Z - - - - R- - - - -ZZ
```