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18
ECNO: 622
6. OPERATION
6.5 Measurement of Fluid with Unknown Sonic Speed
(operation after inputting the piping input/output specifications)
ENT
SIT SETUPSIT SETUP
SITE SETUP
SITE SETUP
PARAMETER MEMORY
PIPE PARAMETER
ZERO ADJUST
RESPONSE SET
CALIBRATION
CUT OFF
TOTALIZE
MANUAL ZERO
--- SENSOR SPACING---
126.7mm
Site setup
ENT
ESC
Measurement
Site setup
Data logger
System setup
Printer
Analogy
System check
Description of key symbols
: ENTRY key (data registration)
: ESCAPE key (setting suspension)
: Cursor up-shift (set value feed)
: Cursor down-shift (set value return)
: Cursor left-shift (scale change)
: Cursor right-shift (scale change)
: Display screen printout (hard copy)
Temporarily set the sonic speed and the coefficient of kinematic viscosity of an approximate fluid
(water soluble fluid is regarded as water), and obtain a measured value of sonic speed.
If the sonic speed is not known at all, temporarily set the sonic speed by the following steps within
the range 500 to 2500m/s.
×
0.84
×
0.84
2500
→
2100
→
1764
→
1482
→
1245
→
1046
→
878
→
738
→
620
→
521m/s
Measurement of unknown fluid
(4)
20
0.7905
1190
0.407
20
1.0216
1659
1.762
20
0.7135
1006
0.336
20
1.1131
1666
21.112
20
1.4870
1001
0.383
20
1.2613
1923
1188.500
20
1.0495
1159
1.162
20
0.9280
1181
0.411
20
0.9000
1164
0.499
20
1.1053
1388
1.129
20
1.5942
938
0.608
20
13.5955
1451
0.114
20
1.2070
1473
1.665
20
1.2634
1158
0.290
20
0.6260
1032
0.366
20
0.6540
1083
0.489
32
0.9050
1324
15.700
34
0.8030
1250
0.4~0.5
13.5
1.0000
1460
1.004 (20
°
C)
Fluid name
T
°
C
ρ
g/cm
3
Vm/s
ν
(
×
10-6m
2
/s)
Table 2: Coefficient of kinematic viscosity
of various fluids
Acetone
Aniline
Ether
Ethylene glycol
Chloroform
Glycerin
Acetic acid
Methyl acetate
Ethyl acetate
Heavy water
Carbon tetrachloride
Mercury
Nitrobenzene
Carbon bisulfide
n. pentane
n. hexane
Spindle oil
Gasoline
Water
ENT
SEA WATER
OTHER
KIND OF FLUID
KIND OF FLUID
WATER
WATER
1.004E-6 m2/s
WATER
WATER
KINEMATIC VISCOSITY
KINEMATIC VISCOSITY
OTHER
OTHER
SOUND VELOCITY
SOUND VELOCITY
KINEMATIC VISCOSITY
TABLE 2
Important !
T: Temperature
ρ
: Density V: Sonic speed
ν
: Coefficient of kinematic viscosity
Note) For other fluids, see "DATA" given in Chapter 8.
SITE SETUP
ZORO ADJUST
SITE SETUP
ZERO ADJUST
1) Fluid sonic speed: Set
m/s in
Item (8) .
2) Coefficient of kinematic viscosity:
Referring to Table 1 “Coefficient of
kinematic viscosity”, set the coefficient of
kinematic viscosity of an unknown fluid
approximate to the fluid name (kind of fluid).
(Note that this is not the coefficient of
kinematic viscosity of fluid approximate
to the sonic speed of the measured fluid.)
Important !
Setting of "Sonic speed"
and "Coefficient of
kinematic viscosity" of
unknown fluid
•
Open "SITE SETUP" page.
•
Change the setting from
"Kind of fluid" to "Other".
PIPE PARAMETER
--- SENSOR SPACING ---
255.1mm
(9)
PIPE PARAMETER
SENSOR MOUNTING
SENSOR TYPE
TRANS. VOLTAGE
Normal
NO
YES
(1) (2) (3)
(4)
(5)
(6)
(7)
(8)
(9)
(4) (5) (6)
(10)
(11)
ERROR CHECK
SYSTEM CHECK
SYSTEM CHECK