Product details
OGH200 Diffuse Reflection Sensor with Background Suppression
Meet the OGH200 from ifm. It is part of the OG photoelectric sensor series. This diffuse reflection sensor uses red light at 624 nm. It has geometric background suppression. The M18 stainless steel housing fits tight spaces. The type code is OGH-HPKG/US100.
Set the distance with the potentiometer. The range is 15 to 250 mm on white targets. A yellow LED shows switching status. Two fixing nuts come in the box.
Technical Data
- Brand: ifm
- Model: OGH200
- Series: OG photoelectric sensor
- Type: Diffuse reflection sensor with background suppression
- Light source: red light, 624 nm
- Sensing distance: 15 to 250 mm on white target (200 x 200 mm, 90% reflectance)
- Gray target (18%): 15 to 230 mm
- Black target (6%): 15 to 160 mm
- Distance adjustment: potentiometer
- Max light spot: 21 mm at maximum range
- Housing: M18 x 1 threaded, special steel; panel TPE; front lens PMMA; length 72 mm
- Supply voltage: 10 to 36 V DC nominal
- Current consumption: 25 mA
- Output: PNP, light-on; max voltage drop 2.5 V; permanent current 200 mA
- Switching frequency: 1000 Hz
- Protection: reverse polarity, short-circuit (pulsed), overload
- Operating temperature: -25 to 60 °C
- Protection rating: IP 65
- EMC: EN 60947-5-2
- MTTF: 339 years
- Weight: 53.25 g
- Connection: M12 A-coded, 4-pin
Suited Devices and Applications
- Packaging lines: detect boxes and trays on conveyors.
- Material handling: sense pallets and totes in tight cells.
- Assembly stations: check part presence before pressing.
- Door and gate control: detect vehicles or carts at short range.
- Food and beverage: stainless housing suits wash zones (IP 65).
- Mobile machines: 10 to 36 V DC input covers 24 V systems.
Installation and Setup
- Use the two fixing nuts to mount the M18 barrel.
- Keep the background behind the target. Background suppression does the rest.
- Turn the potentiometer to set the cut-off distance.
- Watch the yellow LED for the switch point.
- Connect the M12 A-coded 4-pin plug.
Certifications
- CE and UKCA marks.
- cULus approval (supply class 2).
- EMC per EN 60947-5-2.
Package Contents
- 1 x OGH200 sensor
- 2 x fixing nuts
FAQ
Q: How does background suppression help my line?
A: It ignores objects behind the set range. Only the target in front triggers the output.
Q: My black parts are not detected. What should I check?
A: Black targets cut range to 160 mm. Move the sensor closer or raise the gain with the screw.
Q: Can I replace an older OG sensor without rewiring?
A: Yes, if the old unit has an M12 A-coded 4-pin plug. The pinout and PNP light-on output match.
Q: The LED flickers near shiny metal. Is the unit faulty?
A: Probably not. Shiny surfaces reflect light back. Tilt the sensor slightly or add a fixed background.
Q: How often should I clean the front lens?
A: Check it each shift in dusty areas. Wipe the PMMA lens with a soft cloth and mild cleaner.
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