Brochure

EP-8000 Series Electro-Pneumatic Transducers Product/Technical Bulletin
6
Calibration
To change the zero and span settings to values other
than the factory settings (Table 1), see Figure 2 for
adjustment locations and proceed as follows:
1. Determine the desired high pressure output (P
H)
and, depending on the model chosen, determine
the corresponding input voltage (V
H) or input
current (I
H).
2. Determine the desired low pressure output (P
L)
and the corresponding input voltage (V
L) or input
current (I
L).
3. Calculate the sensitivity using one of the equations
below:
4. Determine if the calculated sensitivity from Step 3
is within one of the ranges below:
Voltage Models: 1.33 S
V 2.33
Current Models: 0.6 S
I 1.0
Figure 12: Application of a Low Volume
EP-8000 With a D-9502 Positioner
DA-1
S
P
S
FO-1
Figure 13: Application of a High Volume
EP-8000 With a V-9502 Positioner
P
S
S
S
Figure 14: Application Using High Volume
EP-8000s To Drive Valve and Damper
Pneumatic Actuators
N.O.
N.C.
S
S
S
Voltage Models:
S =
V
P - P
V - V
HL
HL
Current Models:
S =
I
P - P
I - I
HL
HL