Pulsar Guard

Pulsar Guard 2010 Series – Acoustic Sensors

Maintenance free, non-intrusive solids flow detection


The Pulsar Guard acoustic sensor range offers reliable solids flow detection. It detects and reacts instantly to changes in solids flow and warns of blockages and foreign object detection, high flow, low flow or no flow conditions and can detect pigs within the process.

The sensor provides a 0 to 10 volt output – this signal may be fed directly to a PLC or the optional control unit 2020.

How Pulsar Guard works

The Pulsar Guard 2010 acoustic sensor detects structure borne acoustic signals caused by the movement of material. This movement causes impacts and frictional contact with a containing face, for example the inside of a pipe. The sensor is fastened to the outside of the structure and its high frequency acoustic detection picks up these signals which are often undetectable to the human ear. The high frequency allows use in environments where there is a high degree of machinery or process noise, without interference.

Simple Installation

As the acoustic sensor is completely non-intrusive there is no need to shut down the process for installation, it simply takes minutes to install and the compact design means that it can be fitted in the tightest of positions or environments.

The Pulsar Guard Acoustic Sensor Series
Version: Use: Operating temperature: Power Supply:
2010 Standard -40°C to +85°C
(-40°F to +185°F)
2015 High temperature environments -40°C to +125°C
(-40°F to +257°F)
2011G Suitable for use with Galvanically isolating barriers only. Intrinsically safe earth not required. Identified by “G” stamped on mounting tab. -40ºC (-40ºF)
to +40ºC/+104ºF (EEx ia IIC T6) OR
to +92ºC/+197.6ºF (EEx ia IIC T4)
2011Z Suitable for use with Zener barriers only. Intrinsically safe earth connection required. Identified by “Z” stamped on mounting tab. -40ºC (-40ºF) 
to +40ºC/+104ºF (EEx ia IIC T6) OR 
to +92ºC/+197.6ºF (EEx ia IIC T4) 


  • Gravity chutes, feeders, pipelines, ducts and conveyor belts
  • Bulk solids, granules, pellets, meals
  • Feed, grain, milling, food, cement, mining, coal power, plastics
  • High flow, low flow and no flow detection of solids
  • Detects impending blockages
  • Detects foreign objects within the process
  • Process protection
  • Burst filter bag detection
  • Detects pump cavitation
  • Valve leakage detection
  • Detects ‘Bridging’ and ‘Rat-holing’ in silos
  • Material flow/route verification
  • Bearing failure


Pulsar Guard Acoustic Sensor Series
Detection frequency: 100 to 600 kHz
Analogue output: 0 – 10V DC
Cable: 4m of 4 core shielded 24 AWG
Ingress protection: IP68 (NEMA 4)
Sensor mounting: Tab with 14mm hole (0.55in).
Construction: Cap and base housing in 316 stainless steel.
Weight: 640 grams (1.41lbs) (includes cable)
Size: 125mm long (4.92in)
Electrical connection: 4 core screened cable
CE Approval: See EC Declaration of Conformity in the manual


Product Details:

Acoustic Sensor0-10Vdc Output 

Quotation & Enquiries:

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