# Threaded temperature probe — TF37

> Threaded temperature probe with connection lead, highly vibration-resistant, used in applications with strong vibrations and high medium temperature requiring decoupling of electrical connection and measuring location.

- Catalog code: tf37
- Model: TF37
- Category: Temperature measurement › Resistance thermometers
- Product page: https://avigan.com.ua/wika/en/products/tf37
- Price: on request
- Supplier: AVIGAN (TOV VIKA Prylad), official WIKA partner in Ukraine

## Overview

Threaded thermometers of this model are notable for their high vibration resistance. The vibration resistance can be up to 10 g.

## Applications

- Compressors and pumps
- Mobile working machines
- Refrigeration technology
- Heating, ventilation and air-conditioning
- Machine building

## Special features

- Measuring ranges from -50 ... +260 °C [-58 ... +500 °F]
- Customer-specific versions
- Very high vibration resistance
- Connection lead made of PVC, silicone, PTFE

## Specifications

| Parameter | Value |
|---|---|
| model | TF37 |
| product family | TF |
| short description | Threaded temperature probe with connection lead, highly vibration-resistant, used in applications with strong vibrations and high medium temperature requiring decoupling of electrical connection and measuring location. |
| subcategory | Threaded temperature probe |
| certifications | RoHS; CE |
| ambient temp | -40 … 85 °C |
| ip rating | IP65 |
| languages in datasheet | en |
| temperature ranges | -50 … 260 °C; -30 … 130 °C |
| sensor type | Pt100, Pt1000, NTC |
| sensor class | F 0.3 |
| probe length mm | 250 |
| probe diameter mm | 4 |
| probe material | brass; stainless steel |
| has thermowell | true |
| thermowell material | Brass; Stainless steel; brass; stainless steel |
| process connections | G ¼ B; G ⅜ B; G ½ B; M14 x 1.5; ¼ NPT; ½ NPT; 7/16" - 20 UNF SAE, O-ring BOSS FPM/FKM; G1/4B; G3/8B; G1/2B; M14x1.5; 1/4NPT; 1/2NPT; 7/16"-20UNF SAE, O-ring BOSS FPM/FKM |
| process temp | -50 … 260 °C |
| electrical connection | Stripped wires, End splices, Customer-specific connectors |

## Datasheet tables

### Measuring element

| Measuring range | 2 |
|---|---|
| Pt1000, class F 0.3 per IEC/EN 60751 | -50 …+260 °C [-58 ...+500 °F] |
| Pt100, class F 0.3 per IEC/EN 60751 | -50 …+260 °C [-58 ...+500 °F] |
| NTC 10 kΩ, B (25/85) = 3,976 | -30 …+130 °C [-22 ...+266 °F] |
| NTC 5 kΩ, B (25/85) = 3,976 | -30 …+130 °C [-22 ...+266 °F] |
| NTC 2.5 kΩ, B (20/85) = 3,541 | -30 …+130 °C [-22 ...+266 °F] |
| NTC 2.252 kΩ, B (25/85) = 3,974 | -30 …+130 °C [-22 ...+266 °F] |
| → Other measuring elements on request |  |
| Connection method | 2-wire connection |
| Possible restrictions | Depending on the choice of insulation material of the connection lead, there may be restrictions in the permissible measuring range |
| PVC | -20 ...+105 °C [-4 ...+221 °F] |
| Silicone | -50 ...+200 °C [-58 ...+392 °F] |
| PTFE | -50 ...+260 °C [-58 ...+500 °F] |

### Accuracy specifications

| Influence of lead resistance | With the 2-wire connection, the lead resistance of the connection lead affects the measured value and must be taken into consideration. 0.162 Ω/m (guideline value for copper cable with cross-section 0.22 mm²) |
|---|---|
| Reference conditions |  |
| Ambient temperature | 15 ... 25 °C [59 ... 77 °F] |
| Atmospheric pressure | 860 ... 1,060 mbar [12.47 ... 15.37 psi] |
| Humidity | 50 ... 70 %relative humidity |
| Condensation | Condensation permissible |
| Mounting position | As required |

### Process connection

| Thermowell | 2 |
|---|---|
| Thermowell diameter | ■ 4 mm[0.16 in] ■ 6 mm[0.24 in] ■ 8 mm[0.31 in] → Further diameters on request |
| Mounting thread | ■ G¼B ■ G⅜B ■ G½B ■ M14 x 1.5 ■ ¼NPT ■ ½NPT ■ 7/16" - 20 UNF SAE, O-ring BOSS FPM/FKM |
| → Other threads on request |  |
| Insertion length | ■ 25 mm[0.98 in] ■ 30 mm[1.18 in] ■ 35 mm[1.38 in] ■ 40 mm[1.57 in] ■ 45 mm[1.77 in] ■ 50 mm[1.97 in] ■ 60 mm[2.36 in] |
| → Other lengths on request, max. insertion length 250 mm[9.84 in] |  |

### Process connection

| Material (wetted) | ■ Brass ■ Stainless steel |
|---|---|

### Output signal

| 1 | 2 | 3 |
|---|---|---|
| Dynamic behaviour per IEC/EN 60751 |  |  |
| Response time | The response time is essentially influenced by the thermowell used (dimen - sions, material), the heat transfer to the measuring element and the flow rate of the medium |  |
|  | Due to the design of the model TF37, there is optimum heat transfer from the medium to the measuring element |  |
|  | Thermowell made of brass (for Ø6mm[0.24 in]) | t0.5: 2.2 s |
|  |  | t0.9: 6 s |
|  | Thermowell made of stainless steel (forØ6mm in]) | t0.5: 2.5 s |
|  | [0.24 | t0.9: 6.5 s |

### Electrical connection

| Connection type | ■ Stripped wires ■ End splices ■ Customer-specific connectors are available on request |
|---|---|
| Insulation material of the connection lead | ■ PVC ■ Silicone ■ PTFE |
| Ingress protection of the transition between thermowell and connection lead (IP code) |  |
| PVC insulation material | IP65 |
| Silicone insulation material | IP66/IP67 |
| PTFE insulation material | IP65 |
| Connection lead | 500 ... 10,000 mm[19.7 ... 393.7 in], in 500 mm[19.7 in] increments |
|  | → Other lengths on request |

### Further details on: electrical connection

| 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|
| Insulation material | PVC | Silicone | PTFE |  |
| Highest working temperature | 105 °C [221 °F] | 200 °C [392 °F] | 260 °C [500 °F] |  |
| Flammability | Self-extinguishing | Self-extinguishing | Not flammable |  |
| Water absorption | Low | Low | None |  |
| Suitability for steam | Good | Limited | Very good |  |
| Chemical resistance against | Dilute bases | Yes | Yes | Yes |
| Dilute acids | Yes | Yes | Yes |  |
| Alcohol | Yes | Yes | Yes |  |
| Petrol | Yes | No | Yes |  |
| Benzene | No | No | Yes |  |
| Mineral oil | Yes | Yes | Yes |  |

### Operating conditions

| Storage temperature range | -40 …+85 °C [-40 …+185 °F] |
|---|---|
| Ambient temperature range | The max. allowable ambient temperature range depends upon the insulation material of the connection lead and on the connector fitted, as required. |
| Static operating pressure | Max. 50 bar [725 psi] |
| Vibration resistance per IEC 60068-2-6:2007 | Depending on the design, mounting situation, medium and temperature To 30g |
| Shock resistance per IEC 60068-2-27:2007 | Depending on the design, mounting situation, medium and temperature To 500g |
| Ingress protection (IP code) per IEC 60529 | → For ingress protection, see table 'Electrical connection' |

| Logo | Description | Region |
|---|---|---|
|  | EU declaration of conformity RoHS directive | European Union |

## Documents

- [ds_te6712_en_co_4a8cfd](https://avigan.com.ua/wika/docs/wika/ds_te6712_en_co.pdf) — PDF, 399 KB, en

## Configurator

This product has an interactive configurator on its product page.

```
TF37- 60 S W1109ZZ
```