Operation And Maintenance; Minimum Flow; Flow Range Table; Calibration ("K-Factor") - Seametrics IP800 Series Instructions Manual

OPERATION AND MAINTENANCE

Calibration ("K-factor")

The K-factor represents the number of pulses per gallon
the meter produces during a flow test. This number must
be entered into your electronic control to make it read
properly. If the IP800-Series meter is ordered with a tee
fitting, it is factory-calibrated in the fitting and the K-factor
is indicated on the side (see below).
K: 53.6
MF81T-P200
Find Your K-Factor Here
If a saddle or weld-type fitting has been ordered, use the
K-factor calculator at the bottom of the seametrics.com
home page to determine the K-factor.
it is possible to order a saddle pre-installed on a standard
length of pipe, and the fitting can be wet-calibrated in this
case.

Minimum Flow

As with any other flow sensor, there is a rate below which the IP800-Series sensor cannot read. Check the flow rate table
below for the minimum flow rate detectable by the sensor for a given pipe size.
Flow Range
Nominal
½" ¾"
Pipe Size
Min GPM 0.28 0.5
Min LPM 1.06 1.89
Max GPM
28 50
Max LPM 106 189
Seametrics • 253.872.0284
10031295
In PVC, however,
1" 1½" 2" 3"
0.8 1.9 3.1 6.9
3.03 7.2 11.7 26.1
80 190 314 691
302 719 1188 2615

Field Calibration

It is possible to field-calibrate an IP800-Series flow
sensor to determine an accurate K-factor in the actual
installation. The reason for doing this would be to
compensate for an unusual condition, for instance,
applications with higher viscosity fluid (IP meters are
calibrated for water use) or which lack adequate straight
pipe ahead of the meter. Field Calibration procedures
are described in a Technical Bulletin on our website
(www.seametrics.com).
Pressure vs. Temperature (PVC/Polypro)
200
150
P.S.I.
100
50
60˚ 70˚ 80˚
4" 6" 8"
12 27 46.8
45 102 177
1190 2700 4680
4504 10221 17716
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