Seametrics WT-Series Turbine User Manual download pdf (Page 3)

Page 3

INSTALLATION

Piping Conditions. Installing the meter with 10 diameters of

straight pipe upstream and 5 downstream is recommended.

CONNECTIONS

For operating instructions for the various electronic modules,

consult the manual for the specic module, included with the meter

at purchase.

INSTALLATION, CONNECTIONS, MAINTENANCE and REPAIR

CAUTION: These water meters are not

recommended for installation downstream

of the boiler feedwater pump where instal-

lation fault may expose the meter to boiler

pressure and temperature. Maximum recom-

mended temperature is 120˚ (PVC) or 200˚ (Metal).

MAINTENANCE and REPAIR

Recalibration. If it is necessary to recalibrate the meter for any

reason, this can be done by any Seametrics-authorized facility.

Call your supplier for information.

Turbine Insert Removal and Installation. CAUTION: First

remove all pressure from the line. Then remove the screws or

bolts that hold the insert in place (or the U-clip in the 2” meters)

and tug gently until the insert comes free. A twisting motion

can help to loosen the O-ring seal. Reverse the procedure to

reinstall, after coating the O-ring with lubricant (plastic compat-

ible in the WTP). Do not overtighten.

Rotor and Shaft Replacement. Examine the rotor to determine

if bearings or shaft are damaged or excessively worn. The rotor

should spin smoothly and freely, with no visible wobble. Back

and forth play should be very minor, less than 1/64”. If it is

necessary to replace the rotor or shafts, rst back out both

shafts with a small blade screwdriver. The rotor will come free

as soon as the shaft ends come free of the rotor bearings. Re-

verse the procedure to reinstall. Note: Do not overtighten the

shaft screws. Check to be sure that a small amount of free play

between the shaft ends and the bearings remains.

Sensor Replacement. This is rarely necessary. However, cer-

tain electrical conditions can damage the sensor. To replace

it, rst remove the electronics module. Disconnect the sensor

leads from the electronics module terminals and remove the

threaded plug over the sensor. Finally, remove the sensor by

pulling on the sensor leads. A gentle tug should be sufcient.

Reverse the process to replace the sensor.

Loop Power Supply

24-36 Vdc (dep on device)

To Other

Control

4-20 mA Device

Red

White

Black

Power

4-20 mA

Sensor

Pulse

Output

Sensor

Output

Black

Red

Position. The WT-Series are all-position meters, operable in

a vertical or horizontal position, with the meter insert in any

radial position. A horizontal position is preferred if there is a

risk of air becoming trapped due to constant low ows. Operat-

ing the meter in partially-lled pipe will result in inaccuracies.

Flanges. For 3-8” WTC and WTS meters, standard anges

are 150 lb. ANSI drilling. 2” WTC or WTS meters and all PVC

meters can be installed with optional anges according to pipe

manufacturer’s recommendations. For PVC a bolt torque of

10-20 ft-lbs. for 2” anges, 20-30 ft-lbs. for 3” and 4” anges,

and 35-50 ft-lbs. for 6” anges is recommended.

Either partial or full-face gaskets can be used. Tighten the

bolts evenly. Use care to prevent a misaligned gasket from

entering the ow stream.

10X Dia. 5X Dia.

Straight coupling can

be part of length

FLOW

WTP

Optional

Flanges

WTP Meter

Size A B

2” 10" 7.5"

3" 12" 6.5"

4" 14" 7.0"

6" 18" 8.5"

WTC and WTS Meters

3"- 8"

Size Dim A

2" * 8"/‡10"

3" 12"

4" 14"

6" 18"

8" 20"

*Without ange

‡With ange

2” FEMALE NPT

(150 lb. Flange opt.)

1 2 3 4

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Seametrics WT-Series Turbine User Manual Page 3

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