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Products > Flow > Glass VA Flowmeters > Floscan Infra-Red Flow Alarm
Floscan flow alarms use an infra-red beam across the glass flow tube of a VA meter. Passage of the float between the sensor arms is detected and logic within the electronics determines whether the float is above or below the sensor position. Clipped to the rear of the frame, the sensor can be adjusted up and down to the required position. The sensor is 12V DC powered with a transistor switch output to drive external logic circuits. A mains operated power unit and slave relay can be used to drive either one or two Floscan sensors.
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| Specification | |
| Sensor Type | IR Beam break detection |
| Direction Logic | Position of float above/below sensor established after first detection of float after power up |
| Setting Position | Held by spring clip anywhere in flow tube operating range |
| Sensor Cable | 2 metre, 3 core screened |
| Cable Functions | Red - Positive Black - 0V Common White - Transistor output |
| Voltage Supply | 12V nominal, 8V - 26V DC range at 25mA |
| Temperature | -5 to +50°C |
| Environment | IP44 with cable exit downwards |
| 0utput | Open collector transistor 50mA 30V max (sensor positioned open circuit for low flow alarm, with cable exit down) conducts for flow above switch point |
| Switch Points | For falling float, top edge of float at centre line of sensor. For rising float, switching occurs when base of float passes centre line. |
| Approval | ATEX EEx ia IIC T4 |
| Available Models | ||
| Description | Tube Size | Code |
| Floscan sensor for gas applications | 1 | GIR1G |
| Floscan sensor for gas applications | 2 | GIR2G |
| Floscan sensor for gas applications | 3 | GIR3G |
| Floscan sensor for liquid applications | 1 | GIR1L |
| Floscan sensor for liquid applications | 2 | GIR2L |
| Floscan sensor for liquid applications | 3 | GIR3L |
GIR is not compatible with all old flow tubes. Glass tube and float FGTF3ASS for gases and liquids are not suitable for use with the GIR. A new flow tube should be purchased with the GIR alarm.