Takex Photosensors
Fiber Optic Sensor

DC Power Supply Photo Sensor

Light Curtain Sensors

Background Suppression Photosensors
- DA-S40R/S70
- DA-S100R/S200
- DX-7
- DL-S
- DL-S100R/S202
- DL

Ultrasonic Sensors

AC/DC Power Supply Photosensors

Mark Sensors

Color Sensors

Control Unit

Product for Specific Application

Photosensors for Steel and heavy Industries

Digital Devices


| DA-S40R/S70 | DA-S100R/S200 | DX-7 | DL-S | DL-S100R/S202 | DL |



This product is a phase differential detection type distance sensor that has two outputs, an analog output (current output of 4-20mA) and a comparator output (normal or 1 point zone).

This distance sensor is designed to adopt a new technology to measure a distance by detecting the phase differential of light (differential of time).

Neither the influences of change in the receiving light quantities nor the influences of the background object are easily received. Therefore stable long distance detection can be obtained.



Model DX-7AH
Detection distance 0.5-7.5m (Comparator output : 0.5-7.0m) *1
Standard detecting object 70×70cm White drawing paper
Power supply 12-24V DC±10% Ripple 10% (Max.)
Power consumption 2.3W (Max.)
Analog output characteristic Current output 4 to 20mA±10% (Allowable load resistance 250O Max.)
Resolution ±5%F.S .(Max.)*4,*5
linearity 10%F.S . (Max.) *4
Response frequency Approx. 20Hz *2
Output characteristic
Setting range 0.5 to 7.0m *1
Output mode NPN open collector, Sink current 50mA (Max.) (30V DC Max.), Residual voltage 2V (Max.)
Response frequency Approx. 20Hz
Operating mode Light-on / Dark-on selectable
Load short-circuit protection Built-in
Light source (wavelength) Infrared LED (870nm)
Switch(SW) Push button switch ×3
Teaching method Auto teaching (Comparator output only)
Teaching variation One point normal teaching / Two point normal teaching / One point zone teaching
Materials Case Aluminum (anodized aluminum processing)
Front and rear panel ABS resin
Lens Polycarbonate
Cover for lens Polycarbonate
Connection Six pin waterproof plastic connector
Weight Approx. 200g
Accessory Cable with connector (*3), 250 resistor for current-voltage conversion, Instruction manual
*1 Please note that it might malfunction when there is an object with a strong reflection 40m-80m ahead.
*2: Frequency in case that output amplitude attenuates up to approx. 90%
*3: 0.2m2 × 6 wicks, 2m (outer diameter φ5)
*4: Value 15 minutes after the power is supplied
*5: A high-resolution output can be obtained by averaging processing or integrating.

Ambient light 5,000lx (Max.)
Temperature range -10 to +55°C (without condensation)
Humidity 35 to 85%RH
Enclosure rating IP65
Vibration resistance 10Hz to 55Hz, 1.5mm double amplitude, 2 hr. in X, Y and Z directions
Shock resistance 500m/s2, 3 times in X, Y, and Z direction
Dielectric strength 1000VAC for 1 minute
Insulation resistance 20MΩ Min. (at 500VDC)
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