8100 and 8200 Sludge Blanket Detectors

The 8100 Monitor is suitable for mounting outdoors on the bridge of settlement tanks, as the enclosure is IP65 rated and no outer enclosure is required, although outer protection is often preferable to avoid degradation of the enclosure due to environmental conditions. Provision must be made for transmission of the output signal to the control system; this is normally possible via spare slip rings. Where this is not possible a radio telemetry option is available, allowing transmission directly to the control system without the need for installation of cables.

The 8200 Monitor is a two channel version of the monitor providing the option of alarming at two positions in a tank or on two tanks that are located close together.

Partech offer a selection of sensors that are for use in conjunction with our range of Sludge Blanket monitoring instruments. All the sensors use infrared attenuation as their operating principle, this makes them sufficiently sensitive for use on thin water treatment sludges as well as the more usual sewage treatment applications. When monitoring the Sludge Blanket Level in settlement tanks it is important to ensure that the sensor is sensitive enough to detect low density solids before ‘carry-over’ to the next process stage occurs, ensuring that potential pollution events are highlighted prior to occurrence. At the same time the sensor should not be ‘blinded’ by solids in the supernatant. Advice on sensor selection is included in the brochure and our engineers are available to provide further advice if required.

The 8100 and 8200 Monitors are offered with a choice of sensors, the details below give information about the specifications of the sensors.