With
man’s increasing need to consume water, need to measure water in open channels
has also increased. Open channels are those natural and man-made structures
through which water flows with a free surface. For open channels a number of
different and varied methods have been developed to measure the flow of
water. Modern mechanical and electronic flow meters have made the
continuous measurement of open channel flows possible.
Pune
Techtrol offers solutions for measuring “Loss of
Head” (differential level) between upstream and downstream of the
filter screen in open channels of WTP’s / ETP’s, filtration stations, water
management systems, etc.
Techtrol’s
ultrasonic loss of head level system – LHUS is widely used in water canals,
water treatment plants, sewage pumping and filter stations. It consists of
a pair of ultrasonic transmitters and a differential level controller. The
transmitters are installed on either side of the filter screen to translate the
level change into an analog signal by using time of flight principle. The
relative difference between the two signals from upstream and downstream is
processed by the evaluation unit and displayed as “Loss-of-Head” digitally.
Salient
Features
·
Ultrasonic, Non-contact
measurement.
·
Easy to install and operate.
·
Minimal maintenance due to
non-moving parts
·
Displays differential level
·
Easy calibration through keypad
·
Option of Re transmission 4-20
mA for DCS/PLC
·
Two potential free change-over
relays can be configured as Single Point or Pump Control/Screen Control Alarm
for either Low Head, High Head or Difference.
System Operation
The
system (Fig 1) consists of two Ultrasonic Transmitters (Ultratrol), which
consist of ultrasonic transducer integral with microcontroller based
electronics housed in an enclosure. Ultrasonic pulses emitted from the
transducer to the target are reflected back and sensed by the electronics to
provide 4-20mA current output. The two Ultrasonic Transmitters are mounted
on the upstream and downstream side of the bar screen placed in an open
channel. These transmitters are connected to Differential Level Controller
(TDLC) with relay set at a predefined value. The level difference between
upstream and downstream side is measured by the TDLC to actuate a preset relay.
TDLC
can also be provided with 4-20mA (re- transmission) to DCS / PLC Screen Panel
for further control and automation.
Applications:
“Techtrol”
Loss of head ultrasonic system-LHUS is suitable for use in Waste Water,
Sewage, Effluent Treatment Plants, Open Channel, and Water filtration plant
–filter bed level.
About
Us
Pune Techtrol Pvt. Ltd. has evolved from a six
employee enterprise, in 1984 to become a premier Indian company recognized for
quality level measurement and process automation systems for liquids &
solids. Techtrol’ is recognized as most reliable & trusted brand, delivering
quality products unsurpassed in terms of accuracy, workmanship, performance,
safety & ease of installation, providing long uninterrupted service in wide
& varied industrial applications
Contact
Us
Pune Techtrol Pvt.Ltd
S-18, MIDC Bhosari,
Pune - 411026,India
Phone No- 020 66342900
Email Id- ho@punetechtrol.com
Website- http://www.punetechtrol.com
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