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What are our advantages for only QSD6537 area velocity sensor ?
1. Our area velocity ultrasonic sensor is with conductivity measurement function; 2. Our QSD6537 doppler velocity sensor can measured liquid level by ultrasonic and pressure sensor, the accuracy is higher ; 3. The accuracy for QSD6537 only ultrasonic doppler sensor is 1%; 4. It is very tiny, it c...Read more -
Only QSD6537 sensor (without calculator )
1. The pressure compensation function is not in the sensor, it is in the DOF6000 calculator, and there is no pressure compensation for the sensor purchased separately. 2. The only QSD6537 sensor can only measure the velocity and liquid level, but not the flow data, which is realized by the host. ...Read more -
Pressure and ultrasonic sensors can be used to measure the liquid level-DOF6000 open channel flow meter
Pressure and ultrasonic sensors can be used to measure the liquid level, which is suitable for what situation? Ultrasonic sensor: measuring range 0.02-5m, can only be installed vertically; In the case of large fluid fluctuation, or fluid impurities especially much ultrasonic signal is difficult t...Read more -
The Speed of Sound in Water-DOF6000 open channel flow meter
Velocity measurements are directly related to the speed of sound in water. The factor used to scale the velocity measurement is based on the speed of sound in fresh water at 20°C (see table below). This velocity of sound gives a calibration factor of 0.550mm/sec per Hz of Doppler shift. This cali...Read more -
Accuracy Considerations-DOF6000 open channel flow meter
Alignment with Flow and Depth For the calibration to be valid, the transducer needs to be horizontally and vertically aligned with the flow. While Ultraflow QSD 6537 instruments are calibrated pointing into the flow, they can be pointed downstream with little loss of calibration accuracy. You may...Read more -
TIPS for TF1100 serial ultrasonic flow meter
1. Pipe parameters entered must be RIGHT; otherwise the flow meter will not work properly. 2. During the installation, apply enough coupling compounds in order to stick the transducer onto the pipe wall. While checking the signal strength and Q value, move the transducer slowly around the mountin...Read more -
TROUBLESHOOTING for TF1100 serial flow meter
The TF1100 ultrasonic flow meter has advanced self-diagnostics functions and displays any errors in the upper right corner of the LCD via definite codes in a date/time order. Hardware error diagnostics are usually performed upon each power on. Some errors can be detected during normal operation. ...Read more -
FREQUENTLY ASKED QUESTIONS AND ANSWERS for TF1100 serial transit time ultrasonic flow meter
Q: New pipe, high quality material, and all installation requirements met: why still no signal detected? A: Check pipe parameter settings, installation method and wiring connections. Confirm if the coupling compound is applied adequately, the pipe is full of liquid, transducer spacing agrees with...Read more -
PIPE MATERIAL SOUND SPEED TABLE
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QSD6537 area velocity sensor ‘s develpment
In year of 1996, we produced first generation: area velocity sensor called QSD6526 sensor . It works on ultrasonic doppler principle, it can measure flow rate by ultrasonic sensor and liquid level by pressure sensor ; It is glued structures ; Flow velocity : 21mm/s to 4500 mm/s ; Depth range: 0 t...Read more -
TF1100-EC clamp on ultrasonic flowmeter COMMUNICATIONS PROTOCOL
The TF1100 has communication protocol. Its hardware directly supports a modem, a composition of flow data monitoring system that is economical, reliable and based on telephone line transmission. It can also be connected to a RS-485 or RS232C connectors based on jumpers on circuit board for user’s...Read more -
DOF6000 open channel flow meter—Instantaneous Versus “Averaged” Velocity
from scan to scan at some sites. Because Ultraflow QSD 6537 is very sensitive to variations in velocities, you are able to see the natural velocity changes in the channel. Although the discharge in a channel may be reasonably constant for a period of time, the velocity distribution is always chan...Read more
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