# Mini temperature switch — TXA

> Mechatronic temperature switch with flameproof enclosure Ex d for safety-critical applications in hazardous areas, featuring direct or remote mounting with capillary up to 10 m.

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

## Overview

These high-quality temperature switches have been developed especially for safety-critical applications. The high quality of the products and manufacturing ...

## Applications

- Temperature monitoring and control of processes
- Safety-critical applications in general process instrumentation, especially in the chemical and petrochemical industries, oil and gas industries, power generation incl. nuclear power plants, water/wastewater industries, mining
- For measuring points with limited space, e.g. control panels

## Special features

- No power supply needed for switching of electrical loads
- Setting ranges from -15 ... +20 °C to 180 ... 250 °C
- Repeatability of the set point ≤ 1 % span
- 1 set point, SPDT, high switching power up to AC 250 V, 5 A
- Direct mounting or remote mounting with capillary ≤ 10 m

## Specifications

| Parameter | Value |
|---|---|
| model | TXA |
| product family | Process Mini Series |
| short description | Mechatronic temperature switch with flameproof enclosure Ex d for safety-critical applications in hazardous areas, featuring direct or remote mounting with capillary up to 10 m. |
| subcategory | Temperature switch |
| certifications | CE; KOSHA; RoHS; REACH; EAC; EAC Ex |
| explosion protection | Ex d I Mb; Ex d IIC T6/T4 Gb; Ex tb IIIC T85/T135 Db |
| ambient temp | -40 … 85 °C |
| ip rating | IP66 |
| weight kg | 0.8 |
| languages in datasheet | en |
| temperature ranges | -15 … 20 °C; 5 … 70 °C; 55 … 140 °C; 130 … 190 °C; 180 … 250 °C |
| sensor type | bimetal |
| probe length mm | 125 |
| probe diameter mm | 9.5 |
| probe material | stainless steel; Stainless steel 316 |
| has thermowell | false |
| process connections | ½ NPT male; ¾ NPT male; G ½ A male; G ¾ A male |
| process temp | -40 … 300 °C |
| electrical connection | Connection cable 1.5 m, 0.5 mm², silicone insulation |
| accuracy class | ≤ 1 % of span |

## Datasheet tables

| 1 | 2 | 3 | 4 |
|---|---|---|---|
| Contact version | Electrical rating (resistive load) |  |  |
|  |  | AC | DC |
| E | 1 x SPDT, silver, hermetically sealed | 250 V, 5 A | 24 V, 5 A |
| J | 1 x SPDT, gold-plated, hermetically sealed | 250 V, 0.5 A | 24 V, 1 A |

| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|
| Measuring range | Setting range depending on the switching direction in °C | Working range | Proof temperature | Max. dead band | SAMA class |  |
| in °C | Rising | Falling | in °C | in °C | in °C |  |
| -15 ... +20 | -10 ...+20 | -15 ...+15 | -40 ...+50 | 70 | ≤ 5 | IIC |
| 5 ... 70 | 11 ... 70 | 5 ... 64 | -40 ...+95 | 120 | ≤ 6 | IIC |
| 55 ... 140 | 61 ...140 | 55 ... 134 | -40 ...+160 | 190 | ≤ 6 | IIC |
| 130 ... 190 | 142 ... 190 | 130 ... 178 | -40 ...+215 | 230 | ≤ 12 | IIA |
| 180 ... 250 | 192 ... 250 | 180 ... 238 | -40 ...+300 | 330 | ≤ 12 | IIA |

| Logo | Description | Country |
|---|---|---|
|  | EC declaration of conformity ■ Low voltage directive ■ ATEX 1) IM2 II2GD | European Community |
|  | IECEx 1) per IEC 60079-0, IEC 60079-1, IEC 60079-26, IEC 60079-31 Ex d I Mb Ex d IIC T6/T4 2) Gb Ex tb IIIC T85/T135 2) Db | IECEx member states |
|  | EAC (option) Hazardous areas | Eurasian Economic Community |
|  | KOSHA (option) Hazardous areas | South Korea |

## Documents

- [ds_tv3172_en_co_2cc5c3](https://avigan.com.ua/wika/docs/wika/ds_tv3172_en_co.pdf) — PDF, 430 KB, en