Yokogawa EJA530A - Manual (Page 46)

IM 01C21F01-01E 8-15
8. BRAIN TERMINAL BT200 OPERATION
• Span adjustment value
The span adjustment value is calculated as follows.
Span adjustment value (%) =
P
1
: Actual differential pressure/pressure value
A40: Input (indicated as the value after zeroing)
Measurement pressure
Applied pressure
P
1
Ϫ A40
P
1
ϫ
100
A40
P
1 0
F0846.EPS
• Example: For the range of 0 to 30 kPa.
A40: INPUT = 30.15 kPa
J15: SPAN ADJ = 0.15 %
Suppose that a standard pressure of 30 kPa is applied and
the value of the parameter of A40: INPUT is 30.15 kPa.
Firstly, obtain the slope error for the span as follows;
Add Ϫ0.5% to 0.15% of the current value to calculate the
accumulated span adjustment value.
0.15 ϩ (Ϫ0.50) = Ϫ0.35
F0847.EPS
FEED NO OK
SET
J15:SPAN ADJ
-0.35 %
ESC CLR DEL
SET
J15:SPAN ADJ
0.15 %
- 0.35 Set Ϫ0.35.
Press key twice.
Press the (OK) key.
30.00 Ϫ30.15
30.00
ϫ 100 = Ϫ0.5 (%) ϭ
Span adjustment value (%) =
Note: Enter 0.00 to J15: SPAN ADJ to reset the
span adjustment to the initial value at the
shipment.
P
1
Ϫ A40
P
1
ϫ100
(14) Test Output Setup (K10: OUTPUT X%)
This feature can be used to output a fixed current
from 3.2 mA (–5%) to 21.6 mA (110%) for loop
checks.
• Example: Output 12 mA (50%) fixed current.
ESC
SET
K10:OUTPUT X %
50.0 % ACTIVE
FEED NO OK
SET
K10:OUTPUT X %
0.0 %
+ 050.0 Set “50.0%.”
Press the key twice to
output a fixed current at 50%.
“Active” is displayed while this is
being executed.
Press the (OK) key to cancel
the fixed current output.
F0832.EPS
IMPORTANT
1. Test output is held for approximately 10
minutes, and then released automatically after
the time has elapsed. Even if the BT200
power supply is turned off or the communica-
tion cable is disconnected during test output,
it is held for approximately 10 minutes.
2. Press the (OK) key to release test output
immediately.
(15) User Memo Fields (M: MEMO)
This feature provides 5 user memo fields, each
holding up to 8 alphanumeric characters. Up to 5
items such as inspection date, inspector, and other
information can be saved in these fields.
• Example: Save an inspection date of January
30, 1995.
DATA DIAG PRNT ESC
SET
M10:MEMO 1
95.1.30_
ESC
PARAM
M10:MEMO 1
M20:MEMO 2
M30:MEMO 3
Set “95.1.30” in the order of year,
month, and day.
Press the key twice to
enter the setting.
F0833.EPS