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Acoustic sensors

Siemens offers a comprehensive range of process equipments for pressure, temperature, flow and level measurement. Whether you need a single instrument or a complete instrumentation package, Siemens is your professional supplier for any project.

Siemens process instrumentation covers a wide range of key industries. They include:
 
·       Chemical
·       Energy
·       Mining, aggregates and Cement (MAC)
·       Oil & Gas
·       Food & Beverage
·       Pharmaceutical
·       Water & Wastewater
·       Pulp and Paper


SIEMENS SITRANS DA400 acoustic diagnostic unit

In the version for pump monitoring, the SITRANS DA400 allows
continuous, simultaneous and independent monitoring of up to
four flow control valves in a pump for leaks. In addition, another
four inputs are available for monitoring standard signals (e.g. diaphragm
and temperature monitoring). This means that the condition
of an oscillating displacement pump is monitored in every
phase of its operation.
The SITRANS DA400 is used in all industries where an oscillating
displacement pump is used.
The version for material flow monitoring monitors the material
flow in liquids or gases that is usually as a result of impact or friction,
e.g. against the pipe or channel wall.
If the acoustic diagnostic unit is used in potentially explosive areas,
the sensors as well as the acoustic diagnostic unit can be
installed in the Ex-zone.
If using the unit in potentially explosive areas, you have two
options:
• Operation of the sensors over the safety barriers or
• Operation of the sensors over the SITRANS DA400 with
explosion protection

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SIEMENS SITRANS AS100 acoustic sensor

SITRANS AS100 detects changes in high frequency sound
waves from equipment and materials in motion. It detects and
reacts instantly to changes in solids flow to warn of blockages,
product absence, or equipment failure such as burst filter bags.
This allows an operator to take early preventative action and
avoid costly damage.
Common applications include pellets, powders and most bulk
solids in pipes, chutes, vibratory feeders, pneumatic conveyors
or aerated gravity flow systems.
Operating with a SITRANS CU02 control unit, the system detects
conditions of high flow, low flow or no flow. It can be added to a
control loop via a 4 to 20 mA output. Two relays are fully programmable
and independent of each other and can be used to
operate an alarm or control device.
With no moving parts and a type 304 or 303 stainless steel enclosure
sealed against dust and moisture, this non-invasive unit
requires little or no maintenance. With a dual operating range,
the sensor

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SIEMENS SITRANS CU02 control unit

The system can be readily configured for set points indicating
such conditions as high flow, low flow or no flow. Alternatively, it
can be added to a control loop via a 4 to 20 mA isolated output
for trend monitoring proportional to the signal from the sensor.
Two relays are fully programmable and independent of each
other and can be used to operate an alarm or control device.
Alarming may be provided above or below a setpoint or within a
band. Readings are also displayed locally by the SITRANS
CU02 on its LCD.
The SITRANS CU02 may be mounted up to 500 m (1 500 ft) from
the sensor.

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