Page 1
1/2 NPT
[22.23 HEX]
SERIES OLS
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
reected back through the prism lens. This series offers three optional materials, 316
stainless steel, polysulfone and PFA.
BENEFITS/FEATURES
• 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 stainless steel, 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
1/16
[1.59]
1-3/4
[44.45]
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.
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.
Specic Gravity: No min.
Weight: 3 oz (0.085 kg).
MODEL CHART
Model Wetted Materials
OLS-10
316 SS/polysulfone
OLS-11
Polysulfone
OLS-12
PFA
15/64
[5.95]
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