Micronics UF AV5500, Руководство пользователя

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Page 37
UF AV5500 Area-Velocity Flow Meter
APPENDIX A
– OPTIONS
EXTRA SENSOR CABLE
(OPTION VXC)
Each Micronics UF AV5500 flow meter includes 25 ft. (7.6 m), 50 ft. (15 m) or 100 ft. (30 m) tri-
coaxial sensor cable. This cable is shielded from electrical interference and is watertight with a
polyurethane jacket. Additional cable and Cable Junction Box (Option JB2X or JB4X) may be ordered
with the flow meter, or the cable may be spliced and extended up to 500 ft (152 m) total length as
required during installation. No adjustment is required when the sensor cable is extended or shortened.
Use only Micronics tri-coaxial VXC shielded cable, or run three RG174U coaxial cables in a metal
conduit.
Extended sensor cable should be installed in rigid metal conduit for mechanical and electrical noise
protection. Recommended installation with a junction box is illustrated below:
62 RG AU COAXIAL
- . MAX TOTAL CABLE LENGTH
500 ft (152m) 62 coaxial RG AU
- CONDUIT RECOMMENDED FOR
MECHANICAL PROTECTION
EXTENDED SENSOR CABLE TO
ELECTRONICS ENCLOSURE
TO ULTRASONIC
LEVEL SENSOR
TO VELOCITY SENSOR
SHIELDED COAXIAL PAIR
- . MAX TOTAL CABLE LENGTH
500 ft (152m) SHIELDED
COAXIAL PAIR
- METAL CONDUIT RECOMMENDED
FOR MECHANICAL AND
ELECTRICAL-NOISE PROTECTION
EXTENDED SENSOR CABLE
TO ELECTRONICS ENCLOSURE
Downward AVFM
GND GND
GND GND
CORE
SHIELD
CORE
SHIELD
B
L
K
W
H
T
/
B
L
K
G
R
N
/
B
L
K
W
H
T
/
B
L
K
G
R
N
/
- . MAX TOTAL CABLE LENGTH
500 ft (152m) SHIELDED
TRI-COAXIAL PAIR
- METAL CONDUIT RECOMMENDED
FOR MECHANICAL AND
ELECTRICAL-NOISE PROTECTION
TO GREYLINE SENSOR
EXTENDED SENSOR CABLE
TO ELECTRONICS ENCLOSURE
SHIELDED TRI-COAXIAL PAIR
GND
B
L
K
B
L
K
G
R
N
/
B
L
K
W
H
T
/
B
L
K
B
L
K
W
H
T
/
B
L
K
G
R
N
/
AVFM