Nexen EN50-85V 964232 - Manual (Page 6)

6 FORM NO. L-20313-E-0612
CALIBRATION AND ADJUSTMENT
NOTE: EN50 is calibrated prior to shipping and normally does not require calibration after delivery. If
calibration or adjustment is deemed necessary, only do so after EN50 has been mounted in its operating
position.
FULL RANGE OPERATION
F
orward
a
cting
M
ode
a
djustMent
1. Turn the Zero Adjustment Screw clockwise to
increase pressure and counter-clockwise to
decrease pressure, apply the minimum input signal
(i.e., 4 mA or 0 V) and adjust the Zero Adjustment
Screw for minimum output pressure (i.e., 0 psi).
2. Turn the Span Adjustment Screw clockwise to
increase pressure and counter-clockwise to
decrease pressure, apply the maximum input
signal (i.e., 20 mA or 10 V) and adjust the Span
Adjustment Screw for maximum output pressure
(See SPECIFICATIONS).
3. Repeat Zero and Span calibration (Steps 1 and 2)
until the desired output range is obtained.
r
everse
a
cting
M
ode
a
djustMent
NOTE: The input signal to the red and black leads
must be reversed when reversing the action.
1. Turn the Zero Adjustment Screw clockwise to
increase pressure and counter-clockwise to
decrease pressure, apply the minimum input
signal (i.e., 4 mA or 0 V) and adjust the Zero
Adjustment Screw for maximum output pressure
(See SPECIFICATIONS).
2. Turn the Span Adjustment Screw clockwise to
increase pressure and counter-clockwise to
decrease pressure, apply the maximum input
signal (i.e., 20 mA or 10 V) and adjust the Span
Adjustment Screw for minimum output pressure
(i.e., 0 psi).
OUT
ZERO
IN
SPAN
3. Repeat Zero and Span calibration (Steps 1 and 2)
until the desired output range is obtained.
Zero Adjustment
Span
Adjustment
SPLIT RANGE OPERATION
All Nexen EN50s have the capability to be split or set
for any output in the range as long as the Output Span
is equal to or greater than the minimum Span shown in
the SPECIFICATIONS.
Figure 4