Seametrics AG2000 v.1 - Manual (Page 2)

Page 2
INSTALLATION
Tamper-Evident Seal. The battery-powered AG2000 has
a seal wire to protect against unauthorized access. The
seal can be broken to change units of measure, replace
the battery pack, or to field-install a power/output cable. If
water usage regulation is in effect, only a person authorized
by your regulatory agency should break the seal wire, and
replace it when finished.
Positioning the Meter. These meters can be installed
horizontally, vertically, and in any radial position. If sludge
accumulation is a potential problem, vertical or horizontal
placement with the register angled may be preferred.
Full Pipe Recommendations. All magmeters require a
method for determining that the pipe is empty, to prevent
false reading. This meter is designed to go to zero reading
if one or more electrodes is exposed. For highest accuracy,
install the meter so that the pipe will be full when there is
flow. If air bubbles may be present in the pipe, rotate the
meter by one flange hole to position the control housing at
a 45˚ angle. See Full Pipe diagrams below.
Possible Problem: Air pockets,
accuracy loss, empty pipe reading
Better Installation: Keeps pipe full
at sensor for accuracy
Possible Problem: Air can be
trapped, loss of accuracy
Better Installation: Allows air
to bleed off, higher accuracy
Fittings. The AG2000 flanges have standard ANSI 150 lb
drilling, and should match up with any other ANSI 150 lb
flange.
Temperature. These flow sensors are not recommended
for installation where temperature exceeds 130˚ F.
Calibration. The AG2000 is factory calibrated and should
not require any form of field calibration.
Protecting the Meter. To protect the AG2000 against
environmental assaults, you may wish to install a weather
guard (part #31388).
Straight Pipe Recommendations. See the diagrams below
for the type of installation that best matches yours.
2X
1X
2X
1X
pipe size pipe size
pipe size pipe size
Elbows
Reduced Pipe
(not recommended)
Expanded Pipe
Possible Problem: If air bubbles are
present, they can pass over top measure-
ment electrode; meter reads “empty pipe”
Better Installation: If air bubbles
are present they will pass between
electrodes; meter reads “full pipe”
Electrode
moved from
top by rotating
meter
Intermittent air
bubbles
miss electrode
Not Recommended:
Vertical downflow,
open discharge
Grounding Diagram
Grounding Lug
Meter Flange
Pipe Flange
Bolt
Run grounding wire from grounding lug to
both pipe flanges; secure under bolt head.
Intermittent air
bubbles
pass over
electrode
Grounding. It is important to ground your meter. To do
this, run grounding wire from the grounding lug to both pipe
flanges, securing the wire to the flanges at one of the bolt
holes. See diagram below.
AR
CH
IVE
D
(Includes Dates 7/19/06 to 1
1/06)