Mikrodalga (Ultrasonik) Seviye Ölçer MRG-10

1. Advanced performance
The measuring principle is based on Time Flight
impulse Radar technology that uses very short
pulses.
Non contact measuring
Non mechanical moving parts
High reliability, Easy maintenance
High sensitivity
Density, Pressure and Temperature independent
Loop Power System (2-wire)
4-20mA output and HART output integrated
Wide antenna range
Interactive Windows-based setup software
Built-in display/ keyboard
2. Measuring principle
MRG-10 measures liquid levels by transmitting low
energy radar pulses towards the liquid surface and
receiving the radar echoes. The travel time for the
radar pulse is proportional to the distance between
the gauge and the surface.
Upon reception, microprocessors and intelligent
software in the gauge head analyze the echoes and
transform them into level output data.
The radar pulse is virtually unaffected by the tank
content and atmosphere, temperature or pressure.
Thus, radar measurement is proven to be the most
reliable gauging method in most applications.
Furthermore, maintenance requirements are in fact
zero that as no part of the gauge is in physical
contact with liquid.
All this makes MRG-10 very well suited for storage
and buffer tanks in the chemical and water industry.
3. Applications
MRG-10 is appropriate for calm surface liquid.
If you intend to use MRG-10 to measuring
turbulence surface liquid, you had better to use still
pipe in order to keep calm surface.
MRG-10 is appropriate for storage tanks or buffer
tanks that they have relatively calm surface.
・ Chemical and petroleum
・ Pharmacy
・ Food and beverage

Also it will be available in
・ Water industrial such as river intake gate,
・ Water supply,
・ Sewage water treatment plant
・ Hydraulic power station.
4. System
MRG-10 uses 2-wire system, which means both
signal and power are available on same wiring.
MRG-10 is certified as intrinsically safety instrument,
then if you intend to use it in hazard area,
intrinsically safety isolator should be used.
All of data is displayed by 5-digit LCD display on
main body and changed items by 4 configuration
buttons easily. Also it is possible to operate
Interactive Windows-based setup software on PC.
5. Measuring performance
Measuring performance will be decided by products
nature (dielectric constant), surface conditions and
antenna size.
In generally, the liquid, which has high dielectric
constant number such as water, is easily to
measure, and calm surface liquid is the same.
On the contrary, low dielectric constant liquid,
turbulence surface or forming surface and dirty
antenna conditions are relatively difficult to measure.
Even so if you choose right antenna, it is possible to
measure in most of case.
6. Antenna type
Antenna is only a part, which is exposed in tank
inside, and you should choose proper antenna that
suits to your demand.
6.1 Cone antenna
Cone antenna is available for both original tank or
vessel and pipe installation.
The size of antenna are extending from 4 inch to 8
inch, and the only materials which is exposed in
tank inside are consisted of SUS-316L and PTFE
sealing and O rings.
Thanks to MRG-10 unique flange clamp solution,
you can use your existing flange as process
connection.
6.2 Rod Antenna
The Rod antenna is made of Teflon (PFA) and
stainless steel, which makes it easy to clean and
resistant to aggressive chemicals and conditions. It
has inactive length of 100mm and 250mm to ensure
that measurements are unaffected by the mounting
nozzle or thick flower.
7. Mechanical Installation
MRG-10 shall be mounted on tank nozzle or pipe
easily. To ensure performance you should install
gauge properly as bellow.
Antenna should be kept horizontally.
Inside of microwave transmitting area might be
clear.
Set the gauge to keep away from tank wall as
recommended dimension in the measuring ranges.
To choose bigger size antenna as you can because
big size antenna will be better to gain weak
microwave echo in bad conditions.
8. Electrical Installation
MRG-10 is 2-wire system, which means both signal
and power are available on same wiring. The power
source voltage is 16-36VDC in non-hazardous area,
and 16-28VDC in hazardous area might be
available. For application twisted and sealed cable
is recommended.
MRG-10 is certified as intrinsically safety instrument.
Then if you intend to use it in hazardous area, you
should use with intrinsically safety isolator. In that
case electrical parameters are 28VDC, 93mA and
0.65W as maximum.
Also, if you want to know more detail conditions,
please refer installation guidance.

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