WIKA · Temperature measurement · Family TR
Resistance thermometer with digital indicator
Resistance thermometer with digital display, battery operation, for insertion, thermowell, or surface mounting.
Range
-40…450 °C
Accuracy
0.5 % of full range ±1 digit
Protection
IP65
CERoHSEACKazInMetrMTSCHSBelGIMUkrSEPROUzstandard
Price
On request
Depends on configuration
Description
The DiwiTherm ® is the ideal combination of a digital display and a resistance thermometer. This compact temperature measuring instrument can be used in a wide range of applications and works without an external power supply.
A wide variety of possibilities for the combination of insertion length, neck length, connection to thermowell etc. are available for the thermometers, suitable for any thermowell dimension and the widest range of applications.
Operation without thermowell is only recommended in certain applications.
Optionally, the DiwiTherm ® can be manufactured with a process connection for measuring the temperature on a pipe surface.
for further approvals see page 11
Resistance thermometer, battery operation, model TR75
Special features
- LC display
- Variants with sensors for insertion, mounting into a thermowell or with contact bulb for mounting on a pipe surface
- For all standard thermowell designs
- Measuring range -40 ... +450 °C [-40 ... +842 °F]
- With automatic measuring range changeover (Autorange)
Identification
| Model | TR75 |
| Product family | TR |
| Subcategory | Resistance thermometer with digital display |
Measuring range
| Temperature ranges | −40…+199 °C · +200…+450 °C |
Accuracy
| Accuracy class | 0.5 % of full range ±1 digit |
Process conditions
| Process connection | M14 x 1.5M18 x 1.5G ¼ BG ½ B½ NPTCompression fittingUnion nut G ½ BG1/4BG1/2B1/2NPT |
| Process temperature | −40…+450 °C |
Electrical characteristics
| Power supply | DC 3.6 V lithium battery (AA) |
| Electrical connection | Silicone cable, shielded, EMC gland |
Materials
| Probe material | Stainless steel |
Operating environment
| Ambient temperature | −20…+60 °C |
| IP rating | IP65 |
| Weight | 1 kg |
Certifications and approvals
| Certifications | CERoHSEACKazInMetrMTSCHSBelGIMUkrSEPROUzstandard |
Additional details
| Sensor type | Pt1000 |
| Thermowell | Yes |
| Datasheet languages | EN |
Tables from datasheet
Resistance thermometer with digital display, model TR75
| Measuring ranges | ■ -40.0 ... +199.9 °C ■ +200 ...+450 °C with automatic measuring range changeover (autorange) |
|---|---|
| Display | |
| Principle | 3 ½- digit LCD 7-segment display 21 mmhigh |
| Resolution | 0.1 K up to 199.9 °C 1 K from 200 °C |
| Accuracy | 0.5 %of the respective full-range value ±1 digit |
| Sensor | Pt1000 |
| Instrument variants | |
| DiwiTherm ® with probe for insertion | Probe with connection cable Max. working temperature 200 °C Case for panel mounting, with panel mounting flange |
| DiwiTherm ® for mounting in a thermowell | Spring-loaded probe Screwed plug to thermowell Case with neck tube Option: Adjustable stem and dial (rotatable through 360° and tiltable through 90°) |
| DiwiTherm ® for mounting on a pipe surface | Contact bulb for fixing with tightening strap Max. working temperature 200 °C Case with neck tube Option: ■ Adjustable stem and dial (rotatable through 360° and tiltable through 90°) ■ Case for panel mounting, with connection cable and panel mounting flange |
| Power supply U B | DC 3.6V from 3.6V lithium battery, AA size (Mignon), included in delivery 1) |
| Operating time | min. 10 years |
| Special features | If the battery drops below 2.7 V, the display switches into 'LO'mode |
Case
| Nominal size | 100 |
|---|---|
| Material | Stainless steel |
| Bezel ring | Bayonet ring |
| Bezel ring | Instrument glass |
| Ingress protection | IP65 per IEC/EN 60529 |
| Weight in kg | approx. 1 kg (actual weight depends on design and possibly mounted thermowell) |
Ambient conditions
| Ambient and storage temperature | -20 ...+60 °C |
|---|---|
| Vibration resistance (at sensor) | 10 ... 500 Hz, 5 g, IEC/EN 60068-2-6 |
| Shock resistance (at sensor) | IEC/EN 60068-2-7 |
| Specifications | |
|---|---|
| Material | |
| Probe | Stainless steel |
| Compression fitting | Stainless steel |
| Probe diameter | ■ 2mm ■ 3mm ■ 6mm ■ 8mm Note: approx. 1 mmsmaller than the bore diameter of the thermometer or the blind bore |
| Bore diameter | Bore diameter of the thermowell or the blind bore approx. 1 mm>probe diameter For temperature measurement in a solid body: Diameter of the bore max. 1 mm>probe diameter |
| Probe length | ■ 6 mm(with standard probe length 50, 100 or 150 mm) ■ 8 mm(with standard probe length 100 or 150 mm) Special lengths are possible |
| Process connection | Compression fitting (simple, on-site adjustment to the required insertion length) |
| Compression fitting | ■ G¼Bmale thread (not with Ø8mmprobe) ■ G½Bmale thread ■ Without process connection |
| Cable | Silicone, shielded Application range -40 ...+200 °C with EMCable gland Cable length to customer specification |
View all (9)
| Criterion | Dimension T 1) inmm | Ø transition sleeve inmm |
|---|---|---|
| Probe Ø = transition sleeve Ø | n/a | Identical to probe |
| Ø6mm with crimped transition sleeve | 45 | 7 |
| Ø6mm with crimped transition sleeve 2) | 45 | 8 |
| Ø8mm with crimped transition sleeve | 45 | 10 |
Specifications
| Material | |
|---|---|
| Probe | Stainless steel |
| Process connection | Stainless steel |
| Neck tube | Stainless steel |
| Probe | Vibration-resistant, sheathed cable (MI cable) |
| Probe diameter | approx. 1 mmsmaller than the bore diameter of the thermowell |
| Process connection | |
| Screwed plug | ■ G½B ■ M14 x 1.5 ■ M18 x 1.5 ■ ½NPT |
| Union nut | G½B |
| Male nut | G½B |
| Neck tube diameter | 12mm |
| Neck length | 150mm others on request (minimum neck length: 30 mm) |
| Insertion length | Insertion length = thermowell length for bottom thicknesses at ≤ 5.5mm In order to ensure that the probe is firmly pressed down onto the bottom of the thermowell, the probe must be spring-loaded (spring travel:max 10 mm). |
Specifications
| Material | |
|---|---|
| Contact bulb | Stainless steel |
| Neck tube | Stainless steel |
| Mounting tube | 120mm |
| Fixing | With a tightening strap (not included in delivery) |
| Cable | Silicone, shielded Application range -40 ...+200 °C with EMCable gland Cable length to customer specification Note: The specified accuracy can only be guaranteed up to a maximum cable length of 15 m.With longer cable lengths, the accuracy can deviate sharply. |
| Neck tube diameter | 12mm |
| Neck length | 150mm others on request (minimum neck length: 100 mm) |
| Application range neck tube | -40 ...+200 °C |
| Logo | Description | Country |
|---|---|---|
| EU declaration of conformity ■ EMCdirective EN 61326 emission (group 1, class B) and interference immunity (industrial application) ■ RoHS directive | European Union | |
| EAC (option) EMCdirective | Eurasian Economic Community | |
| 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) | Uzbekistan |
| Certification type | Measuring accuracy | Material certificate |
|---|---|---|
| 2.2 test report | x | x |
| 3.1 inspection certificate | x | - |
| DKD/DAkkS calibration certificate | x | - |
Industry
Chemistry / Pharma
Chemical industry
Industry
Machinery
Machine building, plant and vessel construction
Industry
Food industry
Food and beverage industry
Industry
Heating / Utilities
Sanitary, heating and air-conditioning technology
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