Dwyer Instruments SERIES OLS Catalog Page

1/2 NPT

[22.23 HEX]

SERIES OLS | W.E. ANDERSON™ BY DWYER

OPTITROL® OPTICAL LEVEL SWITCHES

LEVEL

Low Cost, Compact, LED Indication, No Moving Parts

7/8 HEX

OLS-10 OLS-11 OLS-12

The Series OLS Optitrol® Optical Level Switches are low cost, rugged optical
level switches that indicate the presence or absence of liquid via infrared light that is

reected back through the prism lens. This series offers three optional materials, 316
SS, polysulfone and PFA.

FEATURES/BENEFITS

• Provides rapid response while employing no moving parts for stable process control

• Bright red and green LED’s indicate the presence or absence of liquid for true, local
indication

• Three optional materials, 316 SS, polysulfone and PFA provide application exibility

• Compact switch can be quickly mounted horizontally or vertically for each installation

APPLICATIONS

• Food and beverage systems

• Liquid holding tanks

• Hydraulic reservoirs

• Pharmaceutical systems

• Air conditioning systems

• Sumps

SPECIFICATIONS
Service: Noncoating compatible liquids.

Wetted Materials: See model chart.
Temperature Limit: Process: OLS-10,

11: 200°F (93.3°C), OLS-12: 120°F
(48.9°C); Ambient: OLS-10, 11: 175°F
(79.4°C), OLS-12: 120°F (48.9°C).
Pressure Limit: OLS-11, 12: 200 psig
(13.8 bar); OLS-10: 1000 psig (69 bar).

Repeatability: ±0.02˝ (0.5 mm).
Switch Type: NPN open collector.
Power Requirements: 10-28 VDC.

MODEL CHART
Model Wetted Materials

OLS-10

316 SS/polysulfone

OLS-11

Polysulfone

OLS-12

PFA

1/16

[1.59]

1-3/4

[44.45]

Output Signal: Vout (max) = 28 VDC,
Isink (max) = 100 mA.

Current Consumption: 35 mA max.
Electrical Connections: 38˝ (965.2 mm)

3 conductor cable, 22 AWG wire.

Process Connection: 1/2˝ male NPT.
Mounting Orientation: Can be mounted

in any position.
Specic Gravity: No min.
Weight: 3 oz (0.085 kg).

15/64
[5.95]