PFlow Industries D116 User Manual

Revision: 3.0.3
4.1.4 Z Method
The signal transmitted in a Z method installation has less
when the pipes are too large, there are some suspended solid in the fluid, or the
This is because the Z method utilizes a directly transmitted (rather than reflected)
liquid only once.
The Z method is able to measure on pipe diameters ranging from 100mm to
Therefore, we recommend the Z method for pipe diameters over 300mm (12
4.1.5
N Method (not commonly used)
With the N method, the sound waves traverse the fluid
suitable for small pipe diameter measurement.
The measurement accuracy can be improved by extending the transit distance with the N method (uncommo
used).
4.2
Transducer Mounting Inspection
Check to see if the transducer is installed properly and if there is an accurate and strong enough ultrasonic signal
to ensure proper operation and high reliability of the transducer. It can be confirmed by chec
signal strength, total transit time, delta time as well as transit time ratio.
The "mounting"
condition directly influences the flow value accuracy and system long
most instances, only apply a wide ban
d of son
stick it to the outside pipe wall to get good measurement results. However, the following inspections still need to
be carried out in order to ensure the high reliability of the measurement
4.2.1 Signal Strength
Signal strength (displayed in Window M90) indicates a detected strength of the signal both from upstream and
downstream directions. The relevant signal strength is indicated by numbers from 00.0
signal detected while 99.9 represents
maximum signal strength.
Normally, the stronger the signal strength detected, the longer the operation of the instrument reliably, as well as
the more stable the measurement value obtained.
Adjust the transducer to the best position and check to ensure that enough sonic coupling compound is applied
adequately during installation in order to obtain the maximum signal strength.
Downstream Transducer
Upstream Transducer
Flow
Side View
Downstream Transducer
Upstream Transducer
Flow
Side View
D116
Series Ultrasonic Flowmeter
The signal transmitted in a Z method installation has less
attenuation than a signal transmitted with the V method
when the pipes are too large, there are some suspended solid in the fluid, or the
scaling
and liner are too thick
This is because the Z method utilizes a directly transmitted (rather than reflected)
signal which transverses the
The Z method is able to measure on pipe diameters ranging from 100mm to
800mm (4〞~32〞
) approximately.
Therefore, we recommend the Z method for pipe diameters over 300mm (12
〞).
N Method (not commonly used)
With the N method, the sound waves traverse the fluid
three times and bounce twice
off the pipe walls. It is
suitable for small pipe diameter measurement.
The measurement accuracy can be improved by extending the transit distance with the N method (uncommo
Transducer Mounting Inspection
Check to see if the transducer is installed properly and if there is an accurate and strong enough ultrasonic signal
to ensure proper operation and high reliability of the transducer. It can be confirmed by chec
king the detected
signal strength, total transit time, delta time as well as transit time ratio.
condition directly influences the flow value accuracy and system long
-
time running reliability. In
d of son
ic coupling compound lengthwise on the face of the transducer and
stick it to the outside pipe wall to get good measurement results. However, the following inspections still need to
be carried out in order to ensure the high reliability of the measurement
and long-
term operation of the instrument.
Signal strength (displayed in Window M90) indicates a detected strength of the signal both from upstream and
downstream directions. The relevant signal strength is indicated by numbers from 00.0
~99
.9. 00.0 represents no
maximum signal strength.
Normally, the stronger the signal strength detected, the longer the operation of the instrument reliably, as well as
the more stable the measurement value obtained.
Adjust the transducer to the best position and check to ensure that enough sonic coupling compound is applied
adequately during installation in order to obtain the maximum signal strength.
Downstream Transducer
Transducer Spacing
Flow
Top ViewSection
Pipe Strap
Transducer
Downstream Transducer
Transducer Spacing
Flow
Top ViewSection
Pipe Strap
Transducer
Series Ultrasonic Flowmeter
Page 16 of 53
attenuation than a signal transmitted with the V method
and liner are too thick
.
signal which transverses the
) approximately.
off the pipe walls. It is
The measurement accuracy can be improved by extending the transit distance with the N method (uncommo
nly
Check to see if the transducer is installed properly and if there is an accurate and strong enough ultrasonic signal
king the detected
time running reliability. In
ic coupling compound lengthwise on the face of the transducer and
stick it to the outside pipe wall to get good measurement results. However, the following inspections still need to
term operation of the instrument.
Signal strength (displayed in Window M90) indicates a detected strength of the signal both from upstream and
.9. 00.0 represents no
Normally, the stronger the signal strength detected, the longer the operation of the instrument reliably, as well as
Adjust the transducer to the best position and check to ensure that enough sonic coupling compound is applied
Transducer Spacing
Transducer Spacing

PFlow Industries D116 Specifications

General

Brand	PFlow Industries
Model	D116
Category	Measuring Instruments
Language	English