which flow meter is use for measuring the open channel flow?

Answer Posted / carl_ellis

Primary flow devices for open channel flow are devices like
a weir, flume, or venturi whose design includes a flow
restriction that produces a known level change at a known
flow rate.

The instrumentation is typically a top mounted, high
accuracy ultrasonic transmitter that measures level behind
the flow element by shooting an ultrasonic beam down at the
flow below it. The transmitter calculates flow based on
design information on the primary flow device.

Carl Ellis
Measure First

Is This Answer Correct ?    8 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

In a gas over oil actuator, after the opening/closing of valve, how the gas is vented out? How does the hydraulic/gas circuit function?

1381


What are different types of control valves?

693


what should he know if he is an assitent engineer instrumentation in cement industries of experience of 10 - 15 year.

1619


Questions on flow meters,few questions on HART protocol,

1571


HOW TO CALCULATE ACCURACY OF AN INSTRUMENT. WHICH IS COMPITABLE FOR USE.

1806






why using negative supply for bentley nevada vibration system ?

1707


please tell me what is a light up procedure of Cfbc boiler and what it's axuillaries of cfbc boiler?

8204


What are advantages and disadvantage of the ac supply load cell?

634


in sulfur process what is material of impulse line we use to connect with transmitter ? and does teflon affected by sulfur?

1813


can we replace a slot sensor (inductive type) with limit switch (potenial free contact / no-nc type).

1597


Can anybody please let me know Orifice plate sizing calculation formula and step by step procedure

1510


Instrumentation Safe Guarding test. How to determine the interval time of the test. eg:Halfyearly,Every year,Every three years etc.

1645


how u calibrate pneumatic n motorized c/v?

1531


i need some objective type questions in instrumentation

4476


where are following valves are applicable to install. can any valve be installed any line. globe valve butterfly valve boll valve gate valve

1247