OPB350W250Z Optek, Screw Mount Reflective Optical Sensor, Phototransistor Output

Bulk discount available

Subtotal (1 bag of 25 units)*

£166.10

(exc. VAT)

£199.325

(inc. VAT)

Add to Basket
Select or type quantity
Temporarily out of stock
  • 350 unit(s) shipping from 04 March 2026
  • Plus 75 unit(s) shipping from 14 April 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
Per Bag*
25 - 100£6.644£166.10
125 - 225£6.47£161.75
250 +£6.312£157.80

*price indicative

RS Stock No.:
170-0783
Mfr. Part No.:
OPB350W250Z
Brand:
Optek
Find similar products by selecting one or more attributes.
Select all

Brand

Optek

Peak Sensor Distance

6.35mm

Output Device

Phototransistor

Number of Channels

1

Number of Pins

4

Mounting Type

Screw Mount

Dimensions

29.59 x 7.62 x 13.34mm

Height

13.34mm

Length

29.59mm

Maximum Operating Temperature

+85°C

Minimum Operating Temperature

-40°C

Width

7.62mm

Operating Temperature Range

-40 → +85°C

COO (Country of Origin):
MX

Tube Liquid Sensor


The OPB350 series liquid sensor is designed to work with 3.2mm (1/8 inch) and 6.3mm (1/4 inch) outside diameter clear tubes. Used in conjunction with suitably designed output reference circuitry, output states such as "fluid present", "no fluid present" and "no tube present" can be recognised. Clear liquid present causes the phototransistor to sink the maximum current, while dark liquid present causes it to sink the minimum current. As bubbles pass through the tube, the signal will vary between the liquid present and no liquid states. If no liquid is present, the phototransistor sinks only a small amount of current. If no tube is present, the phototransistor sinks a larger current than in the no liquid state.

Opaque plastic housing enhances ambient light rejection
Lead length 610mm, 26 AWG wire
Applications: non-contact sensing of oils and other petroleum products, coloured fluids, toner fluids and water

Related links