optical sensor for rotameters
The Optical Sensor Switch is a noninvasive means for detection of a HI or LOW flow. This sensor is ideal for signaling an alarm, cutoff valve, or other device when the float passes the detector (alarm, valve etc. not included). Helps protect your processes and equipment from damage caused by extreme flow rates. It's compact design and ease of operation make it a nonobtrusive simple to use addition to your flow meter. Perfect for OEM applications. Use whenever maximum or minimum flow levels need to be monitored automatically. Also can be used in conjunction with a control relay to power alternate equipment or monitoring devices.
PRINCIPLE OF OPERATIONA small LED sensor and receiver are mounted on one side of the flow meter. The float inside the flow tube is detected as it passes across the beam of light. Sensor can be used to detect float passage beyond the setpoint of the sensor, or also can be set to monitor float position at specific level, signalling when float is outside of the range of the sensor light beam.
| SPECIFICATIONS |
| MODE OF DETECTION red LED beam break |
| POWER REQUIREMENTS 10 to 30 VDC @ 50 mA maximum |
| OUTPUT TRANSISTORS NPN (1) and PNP (1) output transistors provided |
| NPN sink up to 100 mA |
| PNP source up to 100 mA |
| RESPONSE TIME 500 msec |
| LIGHT IMMUNITY pulse modulated to provide extremely high immunity to ambient light |
| AMBIENT TEMPERATURE -30°C to +70°C operating range |
| SENSOR CONSTRUCTION high impact polycarbonate housing; epoxy encapsulated for mechanical strength |
| LIGHT SOURCE light emitting diode (LED) |
| WAVELENGTH high intensity red = 650 nm connections |
Optical Sensor Optical Sensor Switch accessory catalog page(s) for single flow tube model P, S, or T rotameters
Rotameter Catalog Full line Rotameter and Valves Catalog EM200710
Thermal Mass Flow Catalog Full line Mass Flow and electric Valves Catalog EM200710
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