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expansion thermometer model B70.50.063
expansion thermometer model M70.50.100

WIKA Model 70 Expansion thermometer

$100.00

The WIKA Model 70 expansion thermometer features a durable stainless steel construction designed for industrial temperature measurement applications. Utilizing reliable expansion principle technology, this mechanical thermometer provides accurate temperature readings without external power requirements. The stainless steel version offers excellent corrosion resistance and mechanical strength, making it suitable for harsh industrial environments. With clear dial indication and robust design, the Model 70 ensures dependable performance in chemical plants, machinery monitoring, and process industries. Its maintenance-free operation and long service life make it an ideal choice for continuous temperature monitoring where reliability is paramount.

WIKA Model 70 Expansion thermometer

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Description
This series of thermometers is universally suitable for
machine building, refrigeration and air-conditioning industry.
Expansion thermometers can be installed in or mounted
at nearly all locations. Versions with capillaries are used in
locations which are not easily accessible and where long
distances have to be bridged.
Case, capillary, stem and process connection are made
from stainless steel. Various insertion lengths and process
connections are available to match the requirements of each
measuring location optimally.

Special features
■ Case and stem made of stainless steel
■ Design per EN 13190
■ Different designs of connection and mounting
■ With capillary
■ With various fixed connections

Nominal size in mm

63, 100, 160
Design of connection

1 Plain stem (without thread)
2 Male nut
3 Union nut
4 Compression fitting (sliding on stem)
5 Union nut with fitting
6 Compression fitting (sliding on capillary)
Fill medium measuring system

Xylol or silicon oil
Instrument version and type of mounting

B Instruments with capillary; centre back mount
triangular bezel with bracket
H Instruments with capillary; lower mount (radial)
surface mounting flange
M Instruments with capillary; lower mount (radial)
surface mounting bracket, aluminium die cast
V Instruments with capillary; back mount 1)
panel mounting flange
A Back mount 1), fix
plain stem, threaded connection or thermowell
R Lower mount (radial), fix
plain stem, threaded connection or thermowell
S Back mount 1), fix
plain stem, threaded connection or thermowell;
swivelling approx. 90 ∢°
Accuracy class

Class 2
Rated operating ranges and conditions

EN 13190
Capillary entry

Lower or back
Case

Stainless steel
Bezel ring

Stainless steel
Connection

Stainless steel 1.4571
Capillary

Length to customer specifications (max. 10 m), Ø 2 mm,
stainless steel 1.4571, bending radius not less than 6 mm
Stem

Ø 8 mm, stainless steel 1.4571
Active length of sensor

Depending on Ø d and scale range
Dial

Aluminium, white, black lettering
Pointer

Aluminium, black
Window

NS 100, 160: Instrument glass
NS 63: Transparent plastic
Temperature limits for storage and transport

-50 … +70 °C (EN 13190) without liquid damping
-20 … +60 °C (EN 13190) with food-compatible liquid
damping
-50 … +60 °C (EN 13190) with liquid damping
Ambient temperature limit at the case

0 … 40 °C max. (others on request)
Pressure rating of stem

25 bar max., static
Ingress protection

IP 65 per EN 60529 / IEC 529

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