YZ Systems NJEX 7300L, Инструкция и руководство по эксплуатации, Страница: 50 / 126

YZ Systems, Inc. • 3101 Pollok Drive • Conroe, Texas • USA • 77303 • P: 936.788.5593 • F: 936.788.5720
Page 40
NJEX 7300L ver.09042003
SSSSS
ECTION ECTION ECTION ECTION ECTION
7: 7:
7: 7:
7: C C
C C
C
ALIBRA ALIBRA ALIBRA ALIBRA ALIBRATING TING TING TING TING
S S
S S
S
IGN IGN IGN IGN IGNAL AL AL AL AL
I I I
I
I
NPUTS NPUTS NPUTS NPUTS NPUTS
Or
Analog Flow Input Calibration,
1-5 VDC / 4-20 mA,
Continued
To calibrate the zero set point, figure 77, apply 1.00
VDC (4.0 mA) to the TB1 terminal #2 (+ positive
signal input) and terminal #3 (- negative signal
input). If a Differential Pressure Transducer – DPT
is used, output from the transmitter should be 1.00
VDC (4.0mA) at 0 inches of water column differential
(0” w.c.).
1. Press & release the *Read key and the voltage
present at the input terminals will be shown flashing
in the display.
2. Press & release the *Accept key to load the zero
point into the memory. This value will stop flashing
when this is completed, figure 78.
Note: if an error message appears, figure 79, the
voltage at the input terminal is outside of the calibration
range of .6V -1.4VDC (2.4 mA - 5.6 mA).
Choose Span to calibrate the full span set point, figure
80, the span adjustment is used to calibrate the N-300
controller for 100% of metered flow in the pipeline.
The N-300 is factory calibrated for 100% of flow to
directly correspond to 5.00 VDC (20 mA) at the flow
input terminal board TB1 terminals #2 and #3,
refer to
the Wiring Control Document on page 116 in Appendix D.
To calibrate the span set point, apply 5.00 VDC (20 mA)
to TB1 terminal #2 (+ positive signal input) and terminal
#3 (- negative signal input). If a DPT is used, output
from the transmitter should be 5.00 VDC (20 mA) at
maximum range of the meter, for example 5.00 VDC
(20 mA) at 100 inches of water column differential
(100” w.c.).
1. Press & release the *Read key and the voltage
present at the input terminals will be shown flashing
in the display, figure 81.
2. Press & release the *Accept key to load the span
setting into the memory. This value will stop flashing
when this is completed, figure 82.
Note: if an error message appears, figure 83, the
voltage at the input terminal is outside of the calibration
range of 3.0V-5.5VDC (12 mA - 22 mA).
Or
pmp bat vmtr sig tnk
Zero Adjustment
*Read 1.0V *Esc
pmp bat vmtr sig tnk
Zero Adjustment
*Accept *1.0v *Esc pmp bat vmtr sig tnk
Zero Adjustment
ERROR 2.0v *Esc
Figure 77
pmp bat vmtr sig tnk
Linear Input
*Zero *Span *Esc pmp bat vmtr sig tnk
Non Linear Input
*Zero *Span *Esc
pmp bat vmtr sig tnk
Span Adjustment
*Read 5.0V *Esc
Or
pmp bat vmtr sig tnk
Span Adjustment
*Accept 5.0V *Esc pmp bat vmtr sig tnk
Span Adjustment
ERROR 2.0V *Esc
Figure 79
Figure 80
Figure 82 Figure 83
Figure 78
Figure 81