Dwyer WM2 - Manual (Page 2)

Meter Reading
The total flow that has passed through your meter is read by starting at the top of
the register with the Five-Digit Totalizer, and then read clockwise around the small
dials. In the example below, the Five-Digit Totalizer reads 13800 (138 x 100), and
the dials read 60 (6 x10), 2 (2 x1), and 0.4 (4 x 0.1) respectively. The total flow is
13862.4.
INSTALLATION
Pressure Drop
Accuracy Chart
MAINTENANCE/REPAIR
Preventative maintenance consists of periodic inspections and cleaning
procedures. The procedures should be performed at regular intervals, and any
defects discovered should be corrected before further operation of the meter.
Visually inspect the meter for missing hardware, broken resistor glass, or other
signs of wear or deterioration. Verify proper flow rate and pressure for meter. A loss
in pressure, with the resulting flow rate decrease, may indicate the meter screen is
clogged and requires cleaning.
Clean the strainer yearly, or as required, depending on water condition. Pull out the
strainer or back flush the meter to loosen trapped particulates
The Series WM2 is not field serviceable and should be returned if repair is needed.
Field repair should not be attempted and may void warranty.
WARRANTY/RETURN
Refer to “Terms and Conditions of Sales” in our catalog and on our website. Contact
customer service to receive a Return Goods Authorization number before shipping
the product back for repair. Be sure to include a brief description of the problem plus
any additional application notes.
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
©Copyright 2013 Dwyer Instruments, Inc. Printed in U.S.A. 4/13 FR# R2-444045-00 Rev. 2
Size
5/8˝
5/8 x 3/4˝
3/4˝
1˝
1-1/2˝
2˝
Coupling
Size
1/2˝ NPT
3/4˝ NPT
3/4˝ NPT
1˝ NPT
1-1/2˝ NPT
2˝ NPT Nominal Flow Range
1 to 10
1 to 20
2 to 30
3 to 50
5 to 100
80 to 160
Max Flow
20
20
30
50
100
160
Model
WM2-A-C-01
WM2-A-C-02
WM2-A-C-03
WM2-A-C-04
WM2-A-C-06
WM2-A-C-07
Size
15 mm
20 mm
25 mm
32 mm
40 mm
50 mm
Coupling
Size
1/2˝ BSPT
3/4˝ BSPT
1˝ BSPT
1-1/4˝ BSPT
1-1/2˝ BSPT
2˝ BSPT Nominal Flow Range
0.12 to 1.5
0.2 to 2.5
0.25 to 3.5
0.48 to 6
0.8 to 10
1.2 to 15
Max Flow
3
5
7
12
20
30
Model
WM2-B-C-08
WM2-B-C-10
WM2-B-C-11
WM2-B-C-12
WM2-B-C-13
WM2-B-C-14
Transitional Flow
0.25
0.25
0.25
0.75
1.5
2
Transitional Flow
0.03
0.03
0.07
0.12
0.2
0.12
GPM (Gallons Per Minute)
m 3 /h
Display Max
(Gallons)
9,999,999.99
9,999,999.99
9,999,999.99
9,999,999.99
99,999,999.9
99,999,999.9
Display Max
(m
3 )
99,999.9999
99,999.9999
99,999.9999
99,999.9999
999,999.9999
999,999.9999
(D
N
15
)
(D
N
20
)
(D
N
25
)
(D
N
32
)
(D
N4
0)
(D
N5
0)