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Series DMTFE energy meter brochure.pdf
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DMTFE
ULTRASONIC ENERGY METER (FOR UNDER DN50)
Series DMTFE Ultrasonic Energy Meters utilize newest digital transit-time processing technology, with compact shape featuring longevity, good stability and high accuracy for all-electronic industrial environment.   cost-effective, service-friendly, of simple design and extremely robust. Its new free-flow jet principle provides an extremely high measuring accuracy.
 
 
Features£º
¡ôWith compact, solid shape, power save mode
¡ôNo moving parts, no pressure loss or abrasion.
¡ôLow start-up flow rate£¬minimum measurable flow velocity 0.003m/s
¡ôSelf-adapting ultrasonic receiving circuit, can work stably even when pipe is with scaling or corrosion.
¡ôQuick transient response, can trace the flow rate change within seconds.
¡ôWith Infrared meter reading function.
¡ôBattery power supply£¬can work constantly for 6 years.
¡ôWith self-diagnosing function and fault indicator.
¡ôInsensitive against magnetite in the liquid
¡ôRemote reading via M-Bus, Radio, RS232 or optical interface
¡ô Storage of volume and energy data
¡ô Static compact energy meter with fully electronic measurement based on the ultrasonic principle
Items
Technical parameters
LCD display
Automatic circulative display heat flow rate and total heat flow
Viewing mode
overlook
Positive, negative flow
With positive and negative heat flow totalizer function
Input
Pairs of Pt 500 temperature sensors with 2-wire leads
Output
4¡«20mA output (Optional)
pulse pile-up output
Data interface(Optional)
RS485¡¢M-Bus¡¢Infrared data reading
Data logger
Can store the historic data for 18-35 months (such as monthly totalizer, working time, ect.). Data can be automatically saved when power supply is cut-off.
Power Supply
High power lithium battery£¨lifetime more than 6 years£©, 9¡«30VDC power supply, current loop, M-Bus, power borrow via RS232 Serial port
Accuracy
0.1 ¡æ
Velocity range
0.01¡«32.00m/s
Temperature of surroundings
-25¡æ¡«75¡æ£¨indicator suited£©
temperature of measured fluid
-20¡æ¡«150¡æ
the range of dimensions
DN20¡«DN40mm
rated pressure
0.6-16MPa
protection class
IP65
Main advantages:
¡ôHigh measurements precision, high accuracy 0.1 deg C
¡ôLong-term stability over a wide range of measured values
¡ôHigh operational reliability and minimum maintenance requirements  
¡ôCompared to mechanical meters, very low hydraulic losses
¡ôEasy data reading, storage and evaluation/processing
¡ôIdentification of leaks in water distribution systems
¡ôInstallation at locations here no external power sources are available
¡ôMeasured data transfer to remote control stations
 
Applications£º
¡ôstatic compact energy meter using ultrasonic technology
¡ôHighly accurate recording of all billing data in local and district heating and cooling systems.
¡ôProcess control and instrumentation.
¡ôSubstituting mechanical heat flow meters with high measuring reliability.
¡ôTechnological measurements of instantaneous flow rate and consumption in water-supply networks.