ET/ET-F/NT-F Chart


 

- Minimum Flow Rate Required For Actuation By H2O & GN2

I = Increasing Flow | D = Decreasing Flow | dp = Pressure Drop In PSI

All Flow Switches Were Tested At 100 psi and 300 psi Standard Units With A 15A -125-250-480 VAC SPDT Micron-Switch.

PIPELINE SIZE

GPM H20

dp

SCFM GN2

dp

1/4"

I

1.174

4.72

6.62 1.54

D

1.155

4.39

4.20

.65

1/4"

I

.148

4.59

Less than

.43

Low Flow

D

.13

4.58

.05

.425

1 /4"

I

Less than

6.39

.425

Low-Low Flow

D

.005

8.84

.425

1 /2"

I

1.94

.64

8.9

.5

D

1.66

.60

8.0

.5

1/2"

1

.22

.7

Less than

.75

Low Flow

D

.20

.7

.04

.735

1/2"

I

Less than

1.15

.798

Low-Low Flow

D

.01

1.13

.70

3/4"

I

3.14

.06

13.9

.07

D

2.42

.06

11.42

.07

3/4"

I

.599

.8

5.37

.036

Low Flow

D

.513

.8

4.67

.036

3/4"

I

.01

1.22

Less than

.036

Low-Low Flow

D

.01

1.22

.05

.036

1"

I

3.2

.06

23.63

.07

D

2.5

.06

19.41

.07

1"

I

.655

.785

9.129

.036

Low Flow

D

.64

.78

7.939

.036

1"

I

Less than

1.15

Less than

.03

Low-Low Flow

D

.01

1.1

.03

.03

1-1/2"

I

3.44

.72

26.0

.07

D

3.40

.72

23.8

.05

1-1 /2"

I

.756

1.2

Less than

.78

Low Flow

D

.755

1.2

1.0

.67

1-1/2"

I

.314

1.7

1.1

Low-Low Flow

D

.313

1.7

.93