Badger Meter 228 Series, Руководство по установке и эксплуатации

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3
200 Series Metal Tee Sensors Matrix (½" to 2½")
Example: 2 x x x x x - x x x x
STYLE
Tee Mounted Insert Sensor ( 2" and 2.5" only) 28
Cast Bronze Tee (1/2" to 1.5"only) 50
M ATERIAL
Brass/Bronze BR
Stainless Steel ( 2" and 2.5" only) SS
Tee - Carbon Steel Sensor Brass CB
Tee - Carbon Steel Sensor Stainless Steel CS
Size
0.5" 05
0.75" 07
1" 10
1.25" 12
1.5" 15
2" 20
2.5" 25
Electronics Housing
PPS 0
ELECTRONICS
Magnetic 2
FM/CSA Approved 4
Standard 5
IR-Irrigation 6
High Temperature 8
O-RING
Viton 0
EPDM 1
Buna N 8
SHAFT
Zirconia Ceramic 0
Hastalloy C 1
Tungsten Carbide 2
Titanium 3
Monel 5
316 Stainless Steel 6
Tantalum 7
IM PELLER
Nylon 1
Tefzel 2
BEARING
Pennlon 1
Tefzel 2
Teflon
3
Mechanical Installation
General
The accuracy of flow measurement for all flow measuring
devices is highly dependent on proper location of the
sensor in the piping system. Irregular flow velocity
profiles caused by valves, fittings, pipe bends, etc. can
lead to inaccurate overall flow rate indications even
though local flow velocity measurement may be accurate.
A sensor located in the pipe where it can be affected by
air bubbles, floating debris, or sediment may not achieve
full accuracy and could be damaged. Badger Meter flow
sensors are designed to operate reliably under adverse
conditions, but the following recommendations should be
followed to ensure maximum system accuracy:
1) Choose a location along the pipe where 10 pipe diam-
eters upstream and 5 pipe diameters downstream of
the sensor provide no flow disturbance. Pipe bends,
valves, other fittings, pipe enlargements and reduc-
tions should not be present in this length of pipe.
2) The preferred location for the sensor around the
circumference of a horizontal pipe is on top. If trapped
air or debris will interfere, then the sensor should be
located further around the pipe from the top but not
more than 45 degrees from top dead center. The
sensor should never be located at the bottom of the
pipe, as sediment may collect there. Locations
off top dead center cause the impeller friction to
increase, which may affect performance at low
flow rates. Any circumferential location is correct
for installation in vertical pipes. Rising flow
preferred to reduce effects of any trapped air.
Mechanical Installation for 228BR, 228CB,
228CS, and 228SS
These tee-type sensors have a factory set inser-
tion depth and alignment.
Warning: do not disturb the position of
thread hex adapter or the lower two nuts on
the threaded rods of the hex
adapter. This could lead to inaccurate calibra-
tion and faulty reading of the ἀow rate.
Remove sleeve assembly by removing the top
7/16" nuts only. Pull the sleeve assembly straight
out of the mounting adaptor.
To install the sensor tee
1) There must be free, unrestricted pipe for
at least 10 diameters upstream and 5 diameters
downstream of the tee.
note: If soldering of
threaded adapters is to be done near the as-
sembly, remove the sensor sleeve to prevent
heat damage to O-rings and plastic parts.
2) Apply pipe compound over the first 3 or 4
threads of the mating pipe.
3)
Thread the pipe into the sensor tee until
hand tight.
4)
Tighten the pipe, using a wrench, an ad-
ditional 1 1/2 turns.
To install sensor in tee
1) Apply a small amount of silicone grease to O-rings on
sensor sleeve assembly and chamfer on inside lip of
tee. Clean off any grease which could be deposited
on the impeller.
2) Align flow arrow on sensor with direction of flow.
3) Carefully press sleeve straight into hex mounting
adaptor.
4) Install 7/16 lock nuts on threaded rod, tighten, do not
move bottom nuts as they set sensor depth.
5) Before pressurizing pipe, verify that:
• All threaded connections are tight.
• The flow direction arrow on sensor is aligned with flow
direction.
• The 7/16 nuts are re-installed on the threaded rods
above the metal collar.
Mechanical Installation for 250BR
Install with flow label pointing in the direction of flow
(downstream).