Zettlex Ltd.




Contact Us REQUIREMENTS

If you want to specify an OEM or custom sensor, then cover these 10 points and you will have covered all necessary aspects:-

1. GEOMETRY - for example, linear or rotary or curvi-linear or 2D or 3D

2. FULL-SCALE - for example, 360 degrees or 600mm

3. RESOLUTION - in other words, the smallest change that must be measured - for example 0,1 degrees or 0,2mm

4. REPEATABILITY - in other words, the stability of the measurement in terms of going back to the same point - for example repeatability = +/-0,025mm

5. LINEARITY - the maximum allowable deviation from a perfectly accurate reading.  You might want to think carefully about this since we often find that what is most important for many aplications is actually repeatbaility.

6. TEMPERATURE RANGE - for example, -40 + 85Celsius

7. ELECTRICAL SUPPLY - for example, 5V, 12V or 24V

8. ELECTRICAL OUTPUT - for example RS232, A/B pulses, 0-10V, 4-20mA

9. UNUSUAL STUFF - such as - "we want to keep power consumption as low as possible" or "it's for submersion in hot sulphuric acid" or "we're using a capacitive device and we have reliability problems"

10. QUANTITY - for example, "100/year"

 





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