RayTek MI Miniature Infrared Sensor - Manual (Page 23)

Installation
MI 15
Figure 4: Proper Sensor Placement
5.2 Wiring
5.2.1 Sensor Head Cable
The manufacturer preinstall’s the sensor head cable between sensor
head and electronic box. It may be shortened but not lengthened.
Shortening the cable length by 1 m (3 ft.) causes a
temperature error of – 0.1 K / m!
Do not bend the sensor head cable tighter than 25 mm / 1 in.
(MID/MIC) and 15 mm / 0.6 in. (MIH) respectively!
Target greater than spot size
Target equal to spot size
Target smaller than spot size
best good incorrect
Sensor