QMT42 Series 400 mm Adjustable Field Sensors
Sensing Cutoff Point is Adjustable from 125 to 400 mm (5 to 16 in)
Printed in USA P/N 49211K7A
• Adjustable field technology allows direct detection of objects within a
defined sensing field, while completely ignoring reflective objects located
beyond the sensing field cutoff point
• Reliable
electronic
adjustment* of sensing field cutoff point from 125 to
400 mm; no mechanical adjustments to worry about
• Compact, rugged, low cost self-contained sensors in metal die cast
housings
• Epoxy-encapsulated circuitry; leakproof IP67 (NEMA 6) construction for
reliable sensing in harsh environments
• Outstanding electrical noise immunity
• Dual LED system indicates sensor performance
• Choice of integral cable or quick disconnect connector
* Patent Pending
Features
QMT42 Adjustable Field Mode
QMT42VN6AFV400
QMT42VN6AFV400Q
25 mm
(1 in) to
Cutoff
point
2 m (6.5 ft)
4-pin Euro QD
10-30V dc
NPN
Models Range Cable
Supply
Voltage
Output
Type
Cutoff Point Deviation
QMT42VP6AFV400
QMT42VP6AFV400Q
2 m (6.5 ft)
4-pin Euro QD
PNP
0
-8
-10
-6
-4
-2
0
+2
+4
+6
+8
+10
75 mm
(1 in)
150 mm
(2 in)
225 mm
(3 in)
300 mm
(4 in)
Cutoff Point Variation Relative to 90% Reflectance White Test Card
Percent
Deviation
375 mm
(5 in)
450 mm
(6 in)
18% Gray Color Sensitivity
6 % Black Color Sensitivity
Visible Red, 680 nm
125 to
400 mm
(5 to
16 in)
Cutoff
Point
Interpretation of Performance Curves
The percentage of deviation indicates a change in the cutoff point for either 18% gray or 6% black targets, relative to
the cutoff point set for a 90% reflective white test card.
As an example, the cutoff point decreases 10% for a 6% reflectance black target when the cutoff point is adjusted for
400 millimeters (16 inches) using a 90% reflectance white test card. In other words, the cutoff point for the black
target is 360 millimeters (14 inches) for this setting.
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