26990 BANNER ENGINEERING, 26990 Datasheet - Page 2

• Manufacturer Part Number: 26990
• Description: Photoelectric Sensor
• Manufacturer: BANNER ENGINEERING

Specifications of 26990

• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No

MINI-BEAM
* Note regarding Light/Dark operate switch:
1) Install the O-ring (supplied with the fiber) on each fiber end, as shown in the
2) While pressing the fiber ends firmly into the ports on the front of the sensor,
Lenses are sometimes added to fiber optic assemblies for extending opposed mode sensing range. Banner offers the following
lens assemblies for use with fiber optic assemblies which have 5/16" -24 threaded sensing tips (e.g. fiber model IT23S):
Lenses are most efficient when they are located slightly beyond their focal length distance from the sensing end of the fiber optic
bundle. The easiest way to focus a lens is to treat it like a magnifying glass.
Illuminate the fiber optic bundle at the threaded end of the fiber optic assembly by directing the opposite end toward a visible light
source (e.g., an incandescent bulb, visible LED, sunlight, etc.). Thread the lens onto the fiber optic assembly until the end of the
fiber optic bundle comes into sharp focus under the lens. Then, back off (unthread) the lens assembly from the point of sharpest
focus by one to three full turns. The illuminated bundle should now appear slightly blurred. This is the optimum setting, and the
lens may be secured in position using one of the jam nuts provided. Refer to the drawing above.
page
L9
L16F
L16FAL
L16FSS
Model
• Turn switch fully clockwise for light operate (sensor outputs conduct when
• Turn switch fully counterclockwise for dark operate (sensor outputs conduct when
2
sensing light is received)
sensing light is not received)
drawing.
slide the U-shaped retaining clip (supplied with the sensor) into the slot in the
sensor’s barrel, until it snaps into place.
12.5 mm (1/2")
25 mm (1")
25 mm (1")
25 mm (1")
Lens Size
®
Sensors
12.5 mm (1/2")
Focal Length
44 mm (1.7")
44 mm (1.7")
44 mm (1.7")
SM312FV
Aluminum
Aluminum
Housing
Stainless
MINI-BEAM Fiber Information
Delrin
Steel
MINI-BEAM Features
Lens Attachment
Maximum operating
Suitable for all but
Suitable for all but
highly corrosive
highly corrosive
100º C (212º F)
temperature is
Suitable for all
environments
environments
environments
Notes
End of Fiber Optic Bundle
Banner Engineering Corp.
www.bannerengineering.com • Tel: [phone]
Lens
light and pulses at a rate proportional to the
strength of the received light signal.
“AID” Indicator LED lights when the
sensor sees its own modulated
•
Focal Length of Lens
Minneapolis, U.S.A.
SM312FV
Focus
Retaining Clip
Lens Housing
Illuminate Opposite End
5/16" Threaded
Sensing Tip
15 Turn
Gain
Adjustment
and Light/Dark
Operate Switch*
Gasketed
Acrylic Cover
O-ring