Ultrasonic Flow Meter

Manas Ultrasonic Flow Meter

Manas have now introduced a new Insertion Type Ultrasonic Flow Meter. Insertion Type Ultrasonic Flow Meter works on the Transit Time or Time of Flight Principle. The flow meter unit utilizes two transducers that functions as both Ultrasonic transmitter and receiver. The transducers are either clamped on or inserted to the outside surface of the closed pipes. The transit time flow meter measures the time it takes for an ultrasonic signal transmitted from one transducer to cross the pipe and be received by second transducer. The flow is then measured by comparing the upstream & downstream time of Ultrasonic signal. With no flow through the pipe the transit time would be equal in both directions.

Product Brochure
Product Details:
BrandManas
Power SupplyUniversal Supply (85 V AC to 265 V AC at 50 Hz.)
Operating Temperature0 to 50 Degree C
Model Name/NumberFIT100D
Accuracy+-0.25% of F .S. for flow rate as well as totalisation.
Electronics EnclosurePlastic Molded
Output4 to 20mA DC
Dimensions92mm(H) x 92mm(W) x 150mm(D)
Input4-20 mA DC
Alarm Setting2 Nos. on flow rate with internally fixed hysteresis
Batching2 Batch Setting possible with 2 independent Relay for coarse and fine setting
OperationLinear or Square Root,Programmable from front key pads
Keyboard4 Nos. of Keys for Parameter Programming
Storage FacilityProgram and Data is stored in the EEPROM
Temperature Drift+-0.015 % / DegreeC max of F.S on flow rate display
Humidity90% R.H max of F.S on the flow rate Display
Transmitter Supply24 V D.C 30 mA suitable to power one two-wire Transmitter
Communication PortRS-232 with MODBUS RTU Protocol
Principle Of Operation:
For measuring the Flow of the medium, two ultrasonic pulses are sent through the medium, one in the flow direction and another in the opposite direction. The transit time of the two pulses are then measured. The transit time difference At between these two pulses gives the average flow velocity on the propagation path of the Ultrasonic Signals. This can be used to obtain the average of flow velocity on the cross section of the pipe, which is proportional to the volumetric flow.

Features :
  • Sizes available for 1" to 24" [DN25 -DN600]
  • The meter Contains No Moving parts and Fast response to the flow transits.
  • Highly Accurate and Reliable.
  • Isolated 4-20 mA output Proportional to flow Rate. 
  • No need to cut the pipe or stop water, easy installation
  • Applicable Line Size: DN50 To DN600