Seametrics AG2000 Instructions Manual
AG2000
9 001:2008
ISO
IRRIGATION MAGMETER
INSTRUCTIONS
FEATURES
Rate and total indicator
Powder-coated diecast-aluminum electronics housing
Cross-drilled screws (2) for tamper-evidence
Tamper-evident security seal
Internal data logger (Optional)
Power/Output cable port access,
Tamper-sealed
Equalization lug
Welded steel epoxy-coated
ow tube
AG2000 IRRIGATION MAGMETER INSTRUCTIONS
316SS electrodes
Santoprene/polypropylene
liner
Flanges, ANSI 150 lb. drilling
CERTIFIED COMPANY
AG2000 INSTRUCTIONSTABLE OF CONTENTS
General Information
Features .................................................................................................................................................... Front
Installation
Tamper-Evident Seal ................................................................................................................................ Page 3
Positioning the Meter ............................................................................................................................... Page 3
Full Pipe Recommendations .................................................................................................................... Page 3
Straight Pipe Recommendations ............................................................................................................ Page 3
Chemigation Applications ........................................................................................................................ Page 3
Fittings and Flanges ................................................................................................................................. Page 3
Temperature ............................................................................................................................................. Page 3
Calibration ................................................................................................................................................ Page 3
Protecting the Meter ................................................................................................................................ Page 3
Conductivity .............................................................................................................................................. Page 3
Flow Range ............................................................................................................................................... Page 3
Installing the Gaskets .............................................................................................................................. Page 4
Tightening Flange Bolts ........................................................................................................................... Page 4
Equalization and Grounding
Metal Pipe Installations .......................................................................................................................... Page 5
Plastic Pipe Installations ......................................................................................................................... Page 5
Power Supply
Battery Power (Standard) ........................................................................................................................ Page 5
External Power (Optional) ........................................................................................................................ Page 5
Solar Power (Optional) ............................................................................................................................. Page 5
Operation
Display Reading ........................................................................................................................................ Page 6
Optional Inputs/Outputs .......................................................................................................................... Page 6
Troubleshooting
Problem ..................................................................................................................................................... Back
Probable Cause ........................................................................................................................................ Back
Things to Try.............................................................................................................................................. Back
253.872.0284 Page 2 seametrics.com
AG2000 INSTRUCTIONSINSTALLATION
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 eld-install a power/output cable (see page 6). CAUTION: If
water usage regulation is in effect, only a person authorized by
your regulatory agency should break the seal wire, and replace
it when nished.
Positioning the Meter. These meters can be installed horizontally,
vertically, and in any radial position. If sludge accumulation
is possible, vertical or horizontal placement with the register
at a 45˚ angle is recommended. Using a check valve on the
upstream side of the meter, and/or an air vent (vacuum relief
valve) in the same, unobstructed run of pipe as the meter, is
required in any installation where the meter may be exposed
to suction when the system is not in normal operation. Suction
can cause damage to the liner. Liner damage caused by
suction, without the use of a check valve and/or air vent, may
void the warranty.
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 ow. If air bubbles may be
present in the pipe, rotate the meter by one ange hole to position
the control housing at a 45˚ angle. See mounting diagrams below.
Intermittent air
bubbles
pass over
electrode
Electrode
moved from
top by rotating
meter
Intermittent air
bubbles
miss electrode
Straight Pipe Recommendations. See the diagrams below
for manufacturers’ recommendations. Local regulations may
vary, conrm before installing to assure compliance.
2X
pipe size pipe size
Elbows
2X
pipe size pipe size
Reduced Pipe
(not recommended)
Expanded Pipe
Note: See Technical Bulletin ‘Piping Congurations for AG2000 Magmeters’ at www.seametrics.com for additional conguration information.
1X
1X
Chemigation Applications. Magmeters in chemigation applications must be placed either upstream of the chemical
injection line, or far enough downstream for complete mixing to occur before the solution reaches the meter. Proper
placement prevents spikes and drops in readings that result
when uids of different conductivity pass through the meter.
(For more information, refer to the technical bulletin on the
Seametrics website Downloads page.)
Possible
sediment
build-up
Possible Problem:
Air bubbles and sediment on the
electrodes can affect accuracy.
Possible Problem: Air pockets,
accuracy loss, empty pipe reading
Possible Problem: Air can be
trapped, loss of accuracy
Not Recommended: Vertical
downow, open discharge
Electrodes free
from sediment
Better Installation:
Improved accuracy results from
unimpeded electrodes.
Better Installation: Keeps pipe full
at sensor for accuracy
Better Installation: Allows air
to bleed off, higher accuracy
Better Installation: Vertical
upow with full pipe
Fittings and Flanges. The AG2000 anges have standard ANSI
150 lb. drilling, and should match up with any other ANSI 150 lb.
ange. IMPORTANT: Piping protruding beyond welded-on ange
faces may damage meter sealing surfaces.
build-up
Temperature. These ow sensors are recommended for operating
temperatures of 10˚ to 130˚ F (-12˚ to 54˚ C) and non-operating
temperatures of -40˚ to 158˚ F (-40˚ to 70˚ C).
Calibration. The AG2000 is factory calibrated and cannot be
recalibrated in the eld.
Protecting the Meter. A weather guard is recommended
(Seametrics part #31388) for environmental protection.
Conductivity. The AG2000 requires media with >20 microSiemens/
cm of conductivity.
FLOW RANGE
Minimum Maximum
3” 7.5 gal/min (0.47 liter/sec) 700 gal/min (44 liter/sec)
4” 12 gal/min (0.75 liter/sec) 1000 gal/min (63 liter/sec)
6” 32 gal/min (2 liter/sec) 2400 gal/min (151 liter/sec)
8” 60 gal/min (4 liter/sec) 4400 gal/min (278 liter/sec)
10” 95 gal/min (6 liter/sec) 7000 gal/min (442 liter/sec)
12” 130 gal/min (8 liter/sec) 10,000 gal/min (631 liter/sec)
253.872.0284 Page 3 seametrics.com
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