Specifications

Sensing Beam

Infrared, 880 nm

Supply Voltage and Current

10 to 30 V dc (10% max. ripple) at less than 40 mA

Supply Protection Circuitry

Protected against reverse polarity and transient voltages

Output Configuration

SPDT (complementary) solid-state dc switch; choose NPN or

PNP models

Light operate: N.O. output conducts when the sensor sees its

own modulated light

Dark operate: N.C. output conducts when the sensor sees dark

Output Rating

100 mA maximum (each output)

OFF-state leakage current: < 5 microamps at 30 V dc

ON-state saturation voltage: < 1 V at 10 mA dc; < 1.5 V at

100 mA dc

Output Protection Circuitry

Protected against false pulse on power-up and continuous

overload or short-circuit of outputs

Overload trip point ≥ 130 mA, typical, at 20 ºC

Output Response Time

1 millisecond on and off

NOTE: 100 millisecond delay on

power-up; outputs are non-conducting

during this time

Repeatability of Response

250 microseconds

Sensing Hysteresis

Less than 20% of set sensing distance

Adjustments

4-turn slotted Gain (sensitivity) adjustment potentiometer

(clutched at both ends of travel)

Range

10 mm (0.4 in) to 6 m (20 ft)

Indicators

Two LEDs: Green and Amber

Green on steady = power to sensor is ON

Green flashing = output is overloaded

Amber on steady = light is sensed; normally open output ON

Amber flashing = marginal excess gain (1-1.5x) in light

condition

Construction

Housings are die-cast zinc alloy with black acrylic polyurethane

finish; lenses are acrylic

Environmental Rating

IEC IP67

NEMA 6

Connections

2 m (6.5 ft) or 9 m (30 ft) attached cable, or 4-pin M12/Euro-

style quick-disconnect fitting; cables for QD models are

purchased separately

Operating Conditions

−20 °C to +55 °C (−4 °F to +131°F)

90% at +50 °C maximum relative humidity (non-condensing)

Certification

Performance

The performance is based on a 90% reflective white test card.

1

10

100

0.1 m

0.33 ft

1.0 m

3.3 ft

10 m

33 ft

0.01 m

0.033 ft

1000

DISTANCE

QMT42DX

Diffuse Mode

Figure 1. Excess Gain

7.5 m

25 ft

6.0 m

20 ft

4.5 m

15 ft

3.0 m

10 ft

1.5 m

5 ft

0

0

10 mm

20 mm

30 mm

10 mm

20 mm

30 mm

0

0.4 in

0.8 in

1.2 in

0.4 in

0.8 in

1.2 in

DISTANCE

Diffuse Mode

QMT42DX

Figure 2. Beam Pattern

QMT42 Series Long-Range Diffuse Sensors

2

www.bannerengineering.com - Tel: +1-763-544-3164

P/N 57890 Rev. A