Application story

Druck's solution saves potential
production loss of $750k
Druck design and manufacture
pressurecontrollers,pressure

products

calibrators,indicators

sensors.
begin

Allwithandtheserawsilicon which is processed in astate-of-the-art clean room.

Druck’s new clean room facility,
installedandmaintainedby Precision Cleanrooms, iscritical to the manufacturing
processes.

Industry supplied
Manufacturing
Application
Simulating a 4-20 milliamp
signal
Product/service
Druck's DPI 620G Calibrator
Customer type
Clean Room Operator

The Customer
A clean room is a controlled environment that is designed to maintain extremely
low levels of pollutants such as dust, airborne microbes, aerosol particles, andchemical vapours.
Druck’s clean room, creates silicon wafer that is cut into individual Die, whichis then fixed into modules. Once through this process, the modules are thenintegrated into finished products such as Druck’s pressure sensors and test andcalibration equipment, which include Portable Calibrators, Pressure Controllers
and Air Data Test Sets.
Precision Cleanrooms specialise in the design and construction of high quality
clean rooms whilst providing ongoing support and maintenance of the facility,ensuring optimal production output for their customers.

Customer's challenge
Linked to Druck’s clean room is a tank containing deionised water whichfeeds the process for creating Die. Deionised water is required as part of themanufacturing processes to keep the clean room operating, enabling thesilicon to be cleaned at each stage of the production process.
On the top of the tank is a telemetry system which enables automated remotemonitoring, collecting measurements and important data from within the tank.
This data is transmitted back to the control room which ensures performance ismaintained to the required specification.
A level sensor is fitted within the tank and is monitored by the telemetry system
to detect the water level, ensuring specified minimum and maximum levels are
not exceeded. The level sensors have a 4 to 20 milliamp current loop output
signal and determine the water level by measuring the hydrostatic pressure of
the water pushing down on the bottom of the tank.
An issue occurred where the tank’s telemetry system alerted the Druck team
employed in the clean room of a water leak within the tank. Upon investigation
the level sensor had failed and required a replacement sensor which had a
3-week lead time for delivery.

Precision Cleanrooms needed a solution to ensure that
there was no disruption to the productivity of Druck’s cleanroom. If the water being fed from the tank is switched
off for more than 24 hours the system’s pipework would
require sanitisation - which takes approximately two days,
leading to a loss of production. Once the water feed has
been turned off, it also takes a further two months for thewater purification system to fully stabilise, which could
mean further losses of production output.

Druck’s solution and added value
Druck provided Precision Cleanrooms with a DPI 620G-IS-L
Genii Intrinsically Safe Multifunction Calibrator, allowing
them to simulate the 4-20 milliamp signal, the level sensor
should have been providing.
Druck’s DPI 620G provides simultaneous measurement andsource capabilities for the setup, testing and calibration ofelectrical, frequency, pressure and temperature devices inmeasurement and control applications.
The DPI 620G was used to hold the value at a fixedoutput (simulating the role of the sensor) which meant
the clean room could continue with daily operations,
without risk of danger to personnel, equipment, silicon
failures or loss of production. This action saved Druckpotential production losses amounting to$750,000.

Picture 1: Druck DPI620G

Druck.com
Copyright 2020. Baker Hughes Company. This material contains one or moreregistered trademarks of Baker Hughes Company and its subsidiaries in one or morecountries. All third-party product and company names are trademarks of theirrespective holders.

Learn more about which range of process calibrators
is right for your application here: https://info.industrial.
ai/Rebrand-Druck-19-Portable-Calibrators-BrochureLP.html?_ga=2.192775714.984378034.1583939262752570016.1581088482
Read more about Druck’s state-of-the-art silicon clean
room here: https://www.bakerhughesds.com/news/gemeasurement-control-opens-world-class-silicon-cleanroom-groby-uk
Find out more information about Druck on
LinkedIn
here:
https://www.linkedin.com/company/
druckcompany/?viewAsMember=true