WIKA · Temperature measurement · Family 70
Expansion thermometer
Expansion thermometer with stainless steel construction, suitable for HVAC, machine building, and industrial applications with mechanical stress.
Range
-60…400 °C
Accuracy
Class 2 per EN 13190
Protection
IP65
2.2 test report per EN 10204CERoHS
Price
On request
Depends on configuration
Description
The model 70 expansion thermometer is a versatile temperature measuring instrument for gaseous, liquid and highly viscous media and is particularly suitable for standard industrial applications with increased mechanical stress. It offers a reliable and robust solution for temperature monitoring in refrigeration and air-conditioning technology, in machine building and in numerous other application areas. Due to its compact design and the available variants with capillaries, the model 70 can be installed flexibly at almost any measuring point - even in difficult-to-access installation
locations or for bridging long distances.
For further approvals, see Seite 6
Special features
- Durability and corrosion protection through the use of stainless steel 316
- Stand-alone measurement without energy supply
- Flexible integration through various connection designs and mounting options
- Measurement also from a distance
Identification
| Model | M70.50.100 |
| Product family | 70 |
| Subcategory | Expansion thermometer |
Measuring range
| Temperature ranges | −30…+50 °C · −60…+40 °C · −40…+60 °C · −20…+60 °C · −20…+80 °C · +0…+100 °C · +0…+120 °C · +0…+160 °C · +0…+200 °C · +0…+250 °C · +0…+300 °C · +0…+400 °C · −50…+30 °C · −20…+40 °C · −10…+50 °C · −10…+70 °C · +10…+50 °C · +10…+70 °C · +10…+90 °C · +10…+110 °C · +20…+140 °C · +20…+180 °C · +30…+220 °C · +30…+270 °C · +50…+350 °C |
Accuracy
| Accuracy class | Class 2 per EN 13190 |
Process conditions
| Process connection | M18 x 1.5M24 x 1.5G ½ BG ¾ B½ NPT¾ NPT |
| Process temperature | −60…+400 °C |
Materials
| Probe material | Stainless steel 1.4571 |
Operating environment
| Ambient temperature | −40…+60 °C |
| IP rating | IP65 |
| Weight | 0.9 kg |
Certifications and approvals
| Certifications | 2.2 test report per EN 102043.1 inspection certificate per EN 10204CERoHS |
Additional details
| Sensor type | bimetal |
| Probe length | 100 mm |
| Probe diameter | 8 mm |
| Thermowell | No |
| Datasheet languages | EN, DE, ES, FR, IT, ZH |
Tables from datasheet
Overview of versions
| Model | NS | Connection location | Mounting option |
|---|---|---|---|
| B70.50 (case without liquid filling) B70.53 (case with liquid filling) | 63 | Back mount | Triangular profile ring with mounting bracket |
| H70.50 (case without liquid filling) H70.53 (case with liquid filling) | 63 | Lower mount (radial) | Surface mounting flange |
| 100 | |||
| 160 | |||
| M70.50 (case without liquid filling) M70.53 (case with liquid filling) | 63 | Lower mount (radial) | Instrument mounting bracket, aluminium die-casting |
| 100 | |||
| 160 | |||
| V70.50 (case without liquid filling) V70.53 (case with liquid filling) | 63 | Back mount | Panel mounting flange |
| 100 | Lower back mount | ||
| 160 |
| Basic information | ||
|---|---|---|
| Standard | EN 13190 | |
| Nominal size in mm["] | ■ 63 [2.5] ■ 100 [4] ■ 160 [6] | |
| Window | ■ Instrument glass ■ Laminated safety glass ■ Acrylic glass ■ Plastic, crystal-clear | |
| Connection location and mounting option | ||
| B70.5x.xxx | Back mount (axial) | Triangular profile ring with mounting bracket |
| H70.5x.xxx | Lower mount (radial) | Surface mounting flange |
| M70.5x.xxx | Lower mount (radial) | Instrument mounting bracket, aluminium die-casting |
| V70.5x.xxx | Back mount | Panel mounting flange |
| Connection designs | ||
| 1 | Plain stem (without thread) | |
| 2 | Male nut | |
| 3 | Union nut | |
| 4 | Compression fitting (sliding on stem) | |
| 6 | Compression fitting (sliding on either capillary or spiral protective sleeve) | |
| Damping | With liquid damping (glycerine) | |
| Filling medium | ■ Xylene ■ Silicone oil | |
| Materials (non-wetted) | ||
| Case, bayonet bezel | Stainless steel | |
| Pointer | Aluminium, black, micro adjustment | |
| Dial | Aluminium (white) |
Measuring element
| Type of measuring element | Bourdon tube system | |
|---|---|---|
| Working range | ||
| Constant loading (1 year) | Measuring range per EN 13190 | |
| Short time (max. 24 h) | Scale range per EN 13190 | |
| Capillary | ||
| Diameter | ∅2mm[0.08 in] | |
| Spiral protective sleeve | ||
| Length of capillary | Capillary without spiral protective sleeve | Max. 10 m[19.7 ft] |
| Capillary with spiral protective sleeve | ||
| Minimum bending radius | Capillary without spiral protective sleeve | 6 mm[0.24 in] |
| Capillary with spiral protective sleeve | 20 mm[0.79 in] | |
| Material | Stainless steel 316 | |
| Mounting options for instruments with remote capillary | ■ Surface mounting flange, stainless steel ■ Instrument mounting bracket, aluminium die-casting ■ Panel mounting flange, stainless steel ■ Triangular profile ring with clamp, stainless steel |
Accuracy specifications
| Accuracy class | Class 2 per EN 13190 at 23 °C ±10 °C ambient temperature |
|---|
View all (15)
| Scale range in °C | Measuring range in °C | Scale interval in °C | Error limit per EN 13190 ±°C |
|---|---|---|---|
| -60 ... +40 | -50 ...+30 | 1 | 2 |
| -40 ... +60 | -30 ...+50 | 1 | 2 |
| -30 ... +50 | -20 ...+40 | 1 | 2 |
| -20 ... +60 | -10 ...+50 | 1 | 2 |
| -20 ... +80 | -10 ...+70 | 1 | 2 |
| 0 ... 60 | 10 ... 50 | 1 | 2 |
| 0 ... 80 | 10 ... 70 | 1 | 2 |
| 0 ... 100 | 10 ... 90 | 1 | 2 |
| 0 ... 120 | 10 ... 110 | 2 | 4 |
| 0 ... 160 | 20 ... 140 | 2 | 4 |
| 0 ... 200 | 20 ... 180 | 2 | 4 |
| 0 ... 250 | 30 ... 220 | 5 | 5 |
| 0 ... 300 | 30 ... 270 | 10 | 10 |
| 0 ... 400 | 50 ... 350 | 10 | 10 |
Further details on: scale range
| Unit | ■ °C ■ °C/°F (dual scale) | |
|---|---|---|
| Dial | ||
| Scale graduation | ■ Single scale ■ Dual scale | |
| Scale colour | Single scale | Black |
| Dual scale | Red | |
| → Other colours on request |
Process connection
| Thread size | ■ G½B ■ G¾B ■ M18 x 1.5 ■ M24 x 1.5 ■ ½NPT ■ ¾NPT |
|---|---|
| Materials (wetted) | Stainless steel 1.4571 |
| Stem | |
| Diameter | ■ 6 mm[0.24 in] ■ 8 mm[0.32 in] ■ 10 mm[0.39 in] ■ 12 mm[0.47 in] |
| Thermowell | In principle, the operation of a mechanical thermometer is possible without a thermowell / protection tube with low process-side loading (low pressure, low viscosity and low flow rates). However, in order to enable exchanging the thermometer during operation (e.g. instrument replacement or calibration) and to ensure a better protection of the instrument and also the plant and the environment, it is advisable to use a thermowell / protection tube from the extensiveWIKA thermowell / protection tube portfolio. → / |
| For further information on the wake frequency calculation of the thermowell protection tube, see technical information IN 00.15. |
Operating conditions
| Ambient temperature range (at the case) | -40 ...+60 °C [-40 ...+140 °F] |
|---|---|
| Storage temperature range | |
| Without liquid damping | -50 ...+70 °C [-58 ...+158 °F] |
| With liquid damping | -50 ...+60 °C [-58 ...+140 °F] |
| Max. operating pressure at stem | Max. 25 bar [363 psi], static |
| Ingress protection per IEC/EN 60529 | IP65 |
| Logo | Description | Region |
|---|---|---|
| PAC Kazakhstan Metrology, measurement technology | Kazakhstan | |
| PAC Uzbekistan Uzbekistan | ||
| - | CRN Safety (e.g. electr. safety, overpressure, ...) | Canada |
Dimensions in mm[in]
| G | SW | i | Ø d |
|---|---|---|---|
| G½B | 27 [1.06] | 8.5 [0.33] | 8 [0.31] |
| G¾B | 32 [1.26] | 10.5 [0.41] | |
| M24 x 1.5 | 32 [1.26] | 13.5 [0.53] | 8 [0.31] |
Dimensions in mm[in]
| G | SW | Ø d 4 | i | Ø d |
|---|---|---|---|---|
| G½B | 27 [1.06] | 26 [1.02] | 14 [0.55] | 8 [0.31] |
| G¾B | 32 [1.26] | 32 [1.26] | 16 [0.63] | 8 [0.31] |
| M18 x 1.5 | 24 [0.94] | 23 [0.91] | 12 [0.47] | 8 [0.31] |
| ½NPT | 22 [0.87] | - | 19 [0.75] | 8 [0.31] |
| ¾NPT | 30 [1.18] | - | 20 [0.79] | 8 [0.31] |
Dimensions in mm[in]
| G | SW | Ø d 4 | i | Ø d |
|---|---|---|---|---|
| G½B | 27 [1.06] | 26 [1.02] | 14 [0.55] | 8 [0.31] |
| G¾B | 32 [1.26] | 32 [1.26] | 16 [0.63] | 8 [0.31] |
| ½NPT | 22 [0.87] | - | 19 [0.75] | 8 [0.31] |
| ¾NPT | 30 [1.18] | - | 20 [0.79] | 8 [0.31] |
| NS | Dimensions in mm[in] | Weight in kg | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| a | a 1 | a 2 | a 3 | b | b 1 | b 3 | Ø d | Ø d 1 | Ø d 2 | Ø d 3 | Ø d 6 | Ø d 7 | A | Ø D 1 | Ø D 2 | ||
| 63 | 10.5 [0.41] | 13 [0.51] | 65 [2.56] | 56 [2.20] | 32.5 [1.28] | 32.5 [1.28] | 34.5 [1.36] | 8 [0.31] | 75 [2.95] | 85 [3.35] | 3.6 [0.14] | 14 [0.55] | 7 [0.28] | 60 [2.36] | 63.5 [2.50] | 62 [2.44] | 0.4 |
| 100 | 15.5 [0.61] | 22 [0.87] | 65 [2.56] | 56 [2.20] | 49.5 [1.95] | 49.5 [1.95] | 50.0 [1.97] | 8 [0.31] | 116 [4.57] | 132 [5.20] | 4.8 [0.19] | 18 [0.71] | 7 [0.28] | 60 [2.36] | 101.0 [3.98] | 99 [3.90] | 0.9 |
| 160 | 15.5 [0.61] | 22 [0.87] | 65 [2.56] | 56 [2.20] | 49.5 [1.95] | - | 50.0 [1.97] | 8 [0.31] | 178 [7.01] | 196 [7.72] | 6.0 [0.24] | 18 [0.71] | 7 [0.28] | 60 [2.36] | 161.0 [6.34] | 159 [6.26] | 1.40 |
| NS | Dimensions in mm[in] | Weight in | |||||||
|---|---|---|---|---|---|---|---|---|---|
| b 1 | Ø d | Ø d 1 | Ø d 2 | Ø d 3 | e 1 | Ø D 1 | Ø D 2 | kg | |
| 63 | 32.5 [1.28] | 8 [0.31] | 75 [2.95] | 85 [3.35] | 3.6 [0.14] | 5 [0.20] | 63.5 [2.50] | 62 [2.44] | 0.4 |
| 100 | 49.5 [1.95] | 8 [0.31] | 116 [4.57] | 132 [5.20] | 4.8 [0.19] | 8 [0.31] | 101.0 [3.98] | 99 [3.90] | 0.9 |
| 160 | - | 8 [0.31] | 178 [7.01] | 196 [7.72] | 6.0 [0.24] | 8 [0.31] | 161.0 [6.34] | 159 [6.26] | 1.40 |
| NS | Dimensions in mm[in] | Weight | |||||
|---|---|---|---|---|---|---|---|
| a 4 | b 5 | Ø d | e 2 | Ø D 1 | Ø D 2 | in kg | |
| 63 | 86.8 | 33.3 | 8 | 3.7 | 63.6 | 61.6 | 0.4 |
| [3.42] | [1.31] | [0.31] | [0.15] | [2.50] | [2.43] |
Industry
Machinery
Suitable for machine building – compact, durable and easy to integrate
Industry
Heating / Utilities
Optimal for HVAC systems – robust, maintenance-free and flexible installation
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