Product category:
Accelerometers and Vibration Sensors
News Release from: Techni Measure | Subject: SM41/43
Edited by the Engineeringtalk Editorial
Team on 12 November 2004
Displacement sensors with
micro-controller
A new addition to the Schreiber Messtechnik range of inductive displacement sensors is the SM41/43 series for measurement from 20 to 360mm full scale.
A new addition to the Schreiber Messtechnik range of inductive displacement sensors recently introduced to the UK by Techni Measure, is the SM41/43 series for measurement from 20 to 360mm full scale The sensors have a built in microcontroller, which allows the unit to be set up for any displacement range within its total measurement range
This article was originally published on Engineeringtalk on 28 Feb 2005 at 8.00am (UK)
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Thus for example, a 100mm version can be programmed with a 4-20mA output, which correlates exactly with any range required to be measured - say from 20 to 80mm.
It does not have to be the full 100mm range, as a nonprogrammable version would be.
Other standard outputs are available and the sensors can be supplied already set up to order, or can be configured by the customer.
Programming is accomplished by applying the supply voltage to extra pins on the output connection.
The internal electronics take the analogue signal of the inductive sensor and digitise this in a 16bit A/D convertor, followed by processing in a microcontroller.
The signal is linearised using the sensor's EEPROM-stored variance of accuracy, and through a 16bit D/A convertor is then transformed into a scaled analogue output signal.
The accuracy normally supplied is 0.25%, but there is an option of 0.1% accuracy and the output can be configured to give an increasing signal when the shaft is either pushed in or pulled out.
The supply voltage required is normally from 10 to 32V DC, although the 0-10V output version does require at least 15V DC.
Models up to 100mm can be supplied with a spring return as an option and integral cable or plug and socket connections can also be selected.
The 25mm diameter body is made from stainless steel and this body and the stainless steel shaft end can both be fitted with ball ends if required to facilitate mechanical connection.
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