Plug Chute Detection Diagram

Benefits of Solids Flow Detectors:

> Non-contact detection.
> Non-intrusive monitoring of flow condition.
> Excellent sensitivity.
> No moving parts...very low maintenance.
> A logic function can be employed to definitively determine a flow anomaly.

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B & C. Point Level Sensors, like the SafePoint® and Model KA/KAX Rotary Paddles or TrueCap® RF Capacitance Probe, can be specifically located to detect the presence of material that would be exposed to the monitor/sensor only during a plugged (backed-up) condition.  It is important that the level sensor be installed in such a position so as to ensure that the material clears away from the sensing element when the plug condition passes (For example: installing sensor in one leg of a "Y" pipe). See diagram.

Benefits of Point Level Sensors:

> Low cost detection of material backed up in the chute or line; condition indicative of a flow obstruction.
> Fail-safe option on many of the level sensor models.

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D. Diaphragm-Style Switch, like the Model G / GX, is a surface mounted, minimally intrusive pressure switch that makes it ideal for chutes or vessels limited in size or internal clearance.

A diaphragm switch provides indication by detecting pressure applied by the backed-up bulk material to the sensing diaphragm. The unit should be installed to a chute, line or vessel wall so that the diaphragm is exposed to the material to be sensed during a backed-up or plugged condition. As material contacts the diaphragm, a force is exerted through the diaphragm to a pressure plate within the bin monitor. Physical deflection of the pressure plate activates an internal switch which is user accessible for signaling alarms, lights or PLC inputs. When material recedes from the diaphragm, a light duty spring returns the pressure plate and internal switch back to their original positions.

Benefits of Diaphragm-Style Switches:

> Low cost.
> Reliable, durable and low maintenance.
> Low profile, non-intrusive mounting...fits into area with limited space.