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The product is a basic Liquid Level sensor integrated into a probe style housing with an AMP Superseal 1.5 series 282105 connector. The mode of operation is derived from the principle of total internal reflection. An LED and photo-transistor are housed within a plastic dome at the head of the device. When no liquid is present, light from the LED is internally reflected from the dome to the photo-transistor. When liquid covers the dome, the effective refractive index at the dome-liquid boundary changes, allowing some light from the LED to escape. Thus the amount of light received by the photo-transistor is reduced and the output switches, indicating the presence of liquid. The method of liquid level sensing is very fast, and almost instantaneous for water. The connector can be mounted in 3 positions relative to the flange. If you need a product with a different output or higher sink current then we can manufacture these to suit your needs. Please contact us for details. Basic Specification | Specifications | | | Operation mode | User defined single point on/off switch (Output is high in air) | | Repeatability (mm) | ± 1 | | Response time | Rising liquid level – 50 µS | | Falling Liquid level – 1 second max (in ethanol) | | Response in other liquids dependent on viscosity | | Mounting | Plastic Probe Style | | Termination | Amp Superseal 1.5 Series 282105 | | 1. Ground | | 2. Output | | 3. +5V to +12V supply | | Material | Polysulphone | | Mounting dia | 19.98 mm | | | Environmental –IP67 rated | IP 67 rated | | | Operating temperature (°C) | -40 to +85 deg C | | | Thermal testing | As per BS EN60068-2-33 | | Humidity | As per BS EN60068-2-30 | | Vibration | As per BS EN60068-2-6 Part S3: 1996 | | Mechanical Shock | As per BS EN60068-2-27 Part 2 Ea: 1987 | | Pressure range (bar) | 0 to 5 (plastic housing) (Note 2) | | Supply voltage (Vcc) | +5Vdc to +12Vdc ± 5% | | Supply current (mA) | 15mA nominal @ +5V | | | Output sink current (Note 4) | @ 25 oC 10mA max | | | @ 5Vdc | @ 80 oC 3mA max | |
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