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Autronica temperature sensors / transmitters
We offer a full range of Autronica temperature sensor / transmitter spare
parts. Although these spare parts are made under the name of KONGSBERG they are
the same high quality sensors that Autronica was know for, and are
made by the same people. Through our worldwide network and large stock these Autronica
temperature sensor / transmitter are provided with short delivery time and competitive prices.
Low temperature Autronica sensors
High temperature Autronica sensors
Autronica Liquid gas sensors
Autronica Protecting wells
Response time of a temperature sensor
The response time of a temperature sensor is expressed by the time constant T.
If a temperature sensor with temperature T1 is immersed in a liquid at temperature
T2, T is the time it takes before the temperature sensor has reached 1 - 1/e ~ 0.63
= 63 % of the temperature difference T2-T1. After the time 2.3T, 90 % of the temperature
difference is reached, and after 5T the sensor will show more than 99 % of the difference.
If the sensor is mounted in a protection well, the time constant will be approximately
doubled. To reduce the time constant, it is recommended to apply heat transfer compound
between sensor and protection well. When compound is used, the time constant will
increase by about 30 %.
Autronica sensor technologies
We offer tailor-made temperature sensors for diesel engines and related marine
and industrial applications. Our range of sensors includes resistance (Pt100/Pt1000),
thermocouple (NiCr/NiAl), thermistor elements (NTC), and our unique wireless temperature
sensors based on a Surface Acoustic Wave (SAW) elements.
Control and traceability
All Autronica temperature sensors deliver are controlled to fulfil their specifications,
normally according to tolerance given by IEC. If desired by the customer, a certificate
can be supplied with each sensor. Our calibration department maintains instruments
used for production control. The calibration equipment is regularly checked by comparison
with our factory standard, which again is traceable to national and international
temperature standards according to ITS90. (ITS90 = The International Temperature
Scale of 1990).
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