Miniature resistance thermometer with wireless transmission
Description
The model TRW is a radio-based resistance thermometer for monitoring medium temperatures of all types. Resistance thermometers in this series can be installed directly into the process or combined with a large number of thermowell designs. It uses the licence-free LoRaWAN ® and Bluetooth ® radio standards and is used, for example, on mobile equipment and remote measuring points. Thanks to intelligent measurement and transmission control and a replaceable battery, the sensor can be operated for years without maintenance.
Special features
- Long battery life through intelligent measurement control
- Easy integration thanks to several radio-standard options
- Numerous application possibilities – also as retrofit
- Robustly built, permanently reliable temperature measurement
Build a TRW for your task
The article number is assembled automatically. If unsure — ask an engineer; we'll match the line's parameters.
- ApprovalsWithout
- Other approvals / certificatesWithout
- Process temperature-50…+300°C
- Radio standardLoRa
- RegionEU
- Frequency868 MHz
- Power SupplyBattery supply - extended Battery
- Connection to platformCustomer's own IIoT connection (for communication protocol, see WIKA website)
- Process connectionWithout
- Material process connectionWithout
- Sensor diameter ød—
- Probe Material—
- Insertion length A—
- Neck length N(MH)0
- Permissible ambient temperature-40 ... +85 °C (-40 ... +185 °F)
- Acessories mountingWithout
- CertificatesWithout
- Additional ordering informationWithout
Finish your configuration
Select every option to submit the request.
| Model | TRW |
| Subcategory | Wireless resistance thermometer |
| Temperature ranges | −196…+300 °C · −50…+300 °C · −50…+500 °C · −20…+125 °C |
| Accuracy class | +/- 1.4 °K for ≤ 300 °C, +/- 2.9 °K for > 300 °C |
| Process connection | 7/16-20 UNF-2A1/4 NPT1/2 NPTM12 x 1.5M20 x 1.5M24 x 1.5 female thread, spring-loaded sensorTightening strapG 1/4 BG 3/8 BG 1/2 BG 1/4 B compression fitting (metal ferrule)G 3/8 B compression fitting (metal ferrule)G 1/2 B compression fitting (metal ferrule)1/4 NPT compression fitting (metal ferrule)1/2 NPT compression fitting (metal ferrule)G 1/4 B compression fitting (PTFE ferrule)G 3/8 B compression fitting (PTFE ferrule)G 1/2 B compression fitting (PTFE ferrule)G 3/8 union nut, spring-loaded sensorG ¼ BG ⅜ BG ½ B¼ NPT½ NPTwithoutG ¼ B compression fitting (metal ferrule)G ⅜ B compression fitting (metal ferrule)G ½ B compression fitting (metal ferrule)¼ NPT compression fitting (metal ferrule)½ NPT compression fitting (metal ferrule)G ¼ B compression fitting (PTFE ferrule)G ⅜ B compression fitting (PTFE ferrule)G ½ B compression fitting (PTFE ferrule)¼ NPT compression fitting (PTFE ferrule)½ NPT compression fitting (PTFE ferrule)G ⅜ union nut, spring-loaded sensorM24x1.5G3/8tapered threadcompression fittingspring-loaded |
| Process temperature | −196…+500 °C |
| Output signal | LoRaWAN® · Bluetooth® |
| Power supply | DC 3.6V |
| Probe material | Stainless steel 1.4571, Stainless steel 316L |
| Thermowell material | Stainless steel 1.4571, Stainless steel 316L |
| Ambient temperature | −20…+60 °C |
| IP rating | IP65/IP67 |
| Weight | 0.05 kg |
| Certifications | RoHS2.2 test report per EN 102043.1 inspection certificate per EN 10204CE |
| Sensor type | Pt100 |
| Probe length | 400 mm |
| Probe diameter | 3 mm |
| Thermowell | Yes |
| Thermowell form | fabricated |
| Datasheet languages | EN, DE |
| LoRaWAN ® | ||
|---|---|---|
| Specification | LoRaWAN ® 868 MHz EU | |
| Protocol version | 1.0.3 | |
| Protocol functions | ■ Registration ■ Configuration ■ Sending measured values ■ Alarm management ■ Battery status | |
| Frequency range | 863 ... 870 MHz | |
| Range in free field | Typically 10 km [6 mi] → Depending on the ambient conditions, such as topography and building structures. | |
| Antenna | PCB antenna, internal | |
| Channel spacing | 200 kHz | |
| Bandwidth | 125 kHz | |
| Max. transmission power | 14 dBm | |
| Transmission interval | Standard | 30 minutes |
| days | ||
| Maximum | 7 | |
| Security | Full end-to-end encryption per AES-128 → For details on security, see website: https://lora-alliance.org | |
| Bluetooth ® | ||
| Version | Bluetooth ® 5.0 or newer → Compatible with all Bluetooth ® Low Energy versions 4.2 or newer | |
| Functions | ■ Registration ■ Configuration ■ Sending measured values ■ Alarm management ■ Battery status ■ Data logger | |
| Frequency range | 2.4 GHz | |
| Range in free field | Typically 10 m[32.8 ft], free field → Depending on the ambient conditions, such as topography and building structures. | |
| Max. transmission power | 4 dBm | |
| Antenna | Chip antenna, internal | |
| Transmission interval | 1.25 seconds | |
| → Update of the measured value only occurs in the set measuring interval. |
| Battery pack | Lithium thionyl chloride battery (model Tadiran SL860/S and hybrid layer capacitor (model Tadiran HLC1020L) as an assembly with connection cable assembled, see spare parts on page 9. | |
|---|---|---|
| Battery voltage | DC 3.6V | |
| Battery life | > 10 years (measuring and transmission interval 1 hour, spreading factor 10) | |
| → At reference conditions | ||
| Current supply | Max.50mA | |
| Measuring interval | Standard | 1 minute |
| Minimum | 10 seconds → Smaller measuring intervals on request | |
| Maximum | 7 days |
| Materials (wetted) | |
|---|---|
| Sheath material | ■ Stainless steel 1.4571 ■ Stainless steel 316L |
| Process connection | ■ Stainless steel 1.4571 ■ Stainless steel 316L |
| Ambient temperature range | -20 ...+60 °C [-4 ...+140 °F] 1) |
|---|---|
| Storage temperature range | -40 ...+70 °C [-40 ...+158 °F] |
| Version with FKM O-ring -20 °C [-4 °F] | |
| Altitude in accordance with EN 61010-1 | Max. 2,000 m[6561.68 ft] above sea level |
| Relative humidity | 20 ... 90 %, non-condensing |
| Maximum operating pressure 2) 3) | |
| With sensor diameter 3 mm[0.12 in] | 140 bar [2,030 psi] |
| With sensor diameter 6 mm[0.24 in] | 270 bar [3,916 psi] |
| Permissible pollution degree per EN 61010-1 | 2 |
| Vibration resistance per IEC 60068-2-6 | 5 g (10 ... 200 Hz) 4) |
| Shock resistance per IEC 60068-2-27 | 10 g, 11 ms |
| Free fall per IEC 60068-2-31 | Individual packaging 1.2 m[3.94 ft] |
| Ingress protection per IEC/EN 60529 | ■ IP65 ■ IP67 |
| Weight | Approx. 0.05 ... 0.7 kg [0.11 ... 1.54 lbs] - depending on version |
View all (8)
| Logo | Description | Country |
|---|---|---|
| EU declaration of conformity | European Union |
| Certificates | ■ 2.2 test report per EN 10204 (e.g. state-of-the-art manufacturing, material proof) ■ 3.1 inspection certificate per EN 10204 (e.g. material proof for wetted metal parts) |
|---|
| Model | Order number |
|---|---|
| LoRaWAN ® gateway, preconfigured for WIKA network server | |
| Gateway for indoor use | On request |
| Gateway for outdoor use | On request |
| Model | Description | Order number | |
|---|---|---|---|
| Battery | Lithium thionyl chloride battery and hybrid layer capacitor (model Tadiran HL- C1020L) as an assembly with connection cable assembled. | 14392747 | |
| Model Tadiran SL860/S | 2,4 Ah |
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