Ar ch ive d – Seametrics TX100-200-SERIES v.2 User Manual

Page 9

Page 7

SET-UP

connection.

Sensors are supplied with 18 ft. of cable.

For sensors with no additional electronics, see diagram for
color coding. For sensors with on-board electronics, see the
manual accompanying the electronics module.

calibration (“k-factor”).

In order to properly process pulses

from the flow sensor, a number must be entered into the
control to which the sensor is connected. This number,
called the K-factor, is the number of pulses the sensor puts
out per unit of fluid passing through the pipe. It is normally
provided for Seametrics sensors in pulses per gallon (see
Table 3, below). These numbers are based on extensive
testing, which has shown close agreement between different
TX sensors in the same installation. Most K-factor error can
be attributed to installation variables, such as depth setting
and fitting configuration.

It is possible to field calibrate a sensor by catching the fluid
in a measured container and comparing with the number
of pulses recorded. (To record individual pulses, set the
K-factor on the control to 1.00.) This is especially desirable
if the installation has less than the recommended length of
straight pipe upstream of the sensor. For detailed intructions
on field calibration, please refer to the technical bulletin on
our website (www.seametrics.com/pdf/LT-13276-A.pdf).

RED (+) 5-24 Vdc

WHITE (signal)

BLACK (-) Power

18' cable standard

10" 12"

16"

24" 30"

36"

38"

42"

17.41 10.11 6.43

4.45

2.13

1.35 0.951 0.602 0.258 0.158 0.110 0.098 0.080

19.49 11.19 7.07

4.08

2.33

1.48 1.05 0.660

—

15.42 9.03

5.84

4.06

1.95

1.25 0.880

—

17.41 10.11 6.43

4.45

2.13

1.35 0.951

—

19.49 11.19 7.07

4.08

2.33

1.48

—

19.39 10.91 7.10

4.11

2.36

—

18.89 10.75 6.90

3.97

—

17.48 10.24 6.39

3.61

2.12

—

15.61 9.20

—

3.43

1.92

1.25 0.87

0.49

—

PVC/Steel

Sch. 40

PVC/Steel

Sch. 80

Stainless Steel

(10S)

Stainless Steel

(40S)

Stainless Steel

(80S)

Copper Tubing

(Type K)

Copper Tubing

(Type L)

Copper Pipe

Duct. Iron

(Class 52)

TABLE 3: TX100/200 K-factors (in Pulses/Gallon) for various pipe sizes

Nominal pipe size

IVE