Tokyo Keiki UFP-20, Installation & Operation Manual

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3-3
3.2 General Specifications
3.2.1 Overall Specifications
Measurement Applicable
Fluid
Homogeneous and sonically conductive fluids
(water, waste water, industrial water sea water, pure water, oil, ethylene glycol-water solution etc)
Range Converted to flow velocity: -30 m/s ~ +30 m/s
Method Ultrasonic pulse transit time difference method
Pipe & Flow
Condition Diameter
DN13mm ~ DN 5000mm
Material
Materials which allow stable transit of ultrasonic waves such as
steel, SUS, castings, ductile casting, PVC, FRPM, etc.
(Note: Applicable diameters may vary with material.)
Turbidity
10000 mg/L or less
Note) The air bubble must not be contained.
Lining
None, tar epoxy, mortar, etc.
Note) The lining must be stucked to the pipe.
Flow Condition Fully developed and rotationally symmetrical flow profile required.
Transducer
Applicable diameter Applicable Temperature
Small Transducer DN 13 ~ 50 mm -20 ~ 120 °C
Midium Transducer DN 65 ~ 500 mm
(DN 20 ~ 50 mm)
(*1)
-20 ~ 120 °C
Large Transducer
DN 300 ~ 5000 mm
-20 ~ 80
°C
Note) Applicable diameters may vary with material or fluid.
Measurement Accuracy
Velocity
≥
1 m/s Velocity < 1 m/s
DN 13
(*2)
~ 90 mm
(DN 20 ~ 50 mm)
(*1)
±2.0 %
(±2.0 ~ ±5.0 %)
(*1)
±0.02 m/s
(±0.02 ~ ±0.05 m/s)
(*1)
DN 100 ~ 250 mm
±1.5 % ±0.015 m/s
DN 300 ~ 5000 mm
±1.0 % ±0.01 m/s
(*1) Medium transducer is recommended for measurement of DN20 ~ 50mm
which attenuates sonically like Zinc-coated-pipe.
(*2) Site calibration required.
Note) Calibrated accuracy
DN 100 ~ 250 mm :
±
0.75 % or
±
0.0075 m/s (Velocity < 1 m/s)
DN 300 ~ 5000 mm : ±0.5 % or ±0.005 m/s (Velocity < 1 m/s)
Repeatability
Velocity
≥
1m/s Velocity < 1m/s
DN 13 ~ 90 mm
±1.0 % ±0.01 m/s
DN 100 ~ 250 mm
±0.75 % ±0.0075 m/s
DN 300 ~ 5000 mm ±0.5 % ±0.005 m/s
Other Protection degree IP65 (IEC 60529)
Cable length
7 m
Note1) PE sheath (up to +65 °C) and FEP sheath
(up to +120 °C) is available.
Note2) Extension cable
（
PE sheath
）
is available.
MAX. 150m can be extended. But it is limited
by the measurement environment.
RTD (Pt100)
(option)
IEC 60751 / JIS-A-Class (3-wires)
(The total accuracy for heatmeter measurement is synthesized
from each flow rate and temperature accuracy.
Temperature measurement accuracy of converter is
±
(0.2 °C + 0.1 %) (Ambient temperature of main body : 25 °C).
Please refer to JIS C 1604-1997 or IEC 60751 for the accuracy
of Pt100.)