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Price
$1,658.00
CAD
Stock
50+ In Stock
The optical liquid level switch uses the principle of total reflection in a prism.
Reflection or penetration, is the basis of the level alarm output. When the sensor is surrounded by air, the angle of incidence is greater than the critical angle and thus total reflection occurs.
Totally reflected light will be transmitted to the receiver.
Conversely, when the sensor is surrounded by liquid, due to the refractive index of the liquid and the sensor tip material, almost all light will penetrate the front of the sensor.
Using this principle, the optical liquid level switch design is based on light.
The receiver can detect and determine a light reflected or penetrated state, and determines the circuit output.
Features- Simple, compact, and robust
- No moving parts
- Built-in, solid-state electronics
- Easily removed, cleaned, and reinstalled
- SD22 uses optical technology to achieve level monitoring and is durable to shocks in the environment
- Uniquely different design (2 separate parts) compared to the traditional optical switch model
- SD 22’s switch body can be removed while the tip remains installed on tank. No tank drainage or leakage required when removing switch
- Intelligent process control for not only do liquid level detection, but also with other sensors connected in series so that the full system has protection
- According to customer demand, adjustable delay time length. Self-test function
- The device is able to detect whether sensor body and tip are installed incorrectly
- The LED indicator is readily apparent users to see
- Quick coupling provide faster installation and reliable fix
Specifications
Brand
Ambient Temperature Range
- -40° to 85° C (-40° to 185° F)
Approvals & Certifications
- CE
- UL (SA44153)
Cable Length
- 3.28 feet (1 metre)
Cable Material
- PVC
Delay Time
- Level Monitoring after Relay ON: 30 seconds ± 1 second
- Relay OFF after Level Continue Missing: 5 seconds (± 1 second)
- Relay ON after Applying the Supply Voltage: 3 seconds ± 1 second
Electrical Connectors
- Cable, 18 AWG
Electrical Rating
- Relay: 2.5 A at 240 Vac, C300
Enclosure, Body Material
- Polyamide (PA66) Glass Fiber Reinforced
Environmental Protection
- IP65
Function
- Self-Test Function
Indication
- Red LED
Materials of Construction
- Tip Material: 304 Stainless Steel
- Tip Material: 316 Stainless Steel
- Tip Material: Zinc-Plated Steel
Media
- Liquids
Metric Connection
- M20 x 1.5 Male
NPT Connection
- 1/2” NPT Male
Operating Temperature
- -40° to 120° C (-40° to 248° F) at < 1-Hour
Pressure Range
- psi: 942.7 (kPa: 6,500, bar: 65)
PT/PF/PS (JIS) Connection
- 1/2” PF Male
- 1/2” PT Male
Sensor, Probe Connection
- Motor Power Detection: 6-Wire
- Typical: 5-Wire
Sensor, Probe Style
- Optic
Supply Voltage
- 115 Vac ± 20 %, 50/60 Hz
- 230 Vac ± 20 %, 50/60 Hz
Torque
- 663.81 In/Lbs (75 Nm)
- Air Conditioning Systems
- Food & Beverage Systems
- Heavy Duty Automotive
- Hydraulic Reservoirs
- Industrial Compressors
- Liquid Holding Tanks
- Machine Tools
- Pharmaceutical Systems
- Processing & Packaging Equipment
