Yokogawa EJA118 - Manual (Page 44)

IM 1C22H1-01E 7-15
7. BRAIN TERMINAL BT200 OPERATION
(b)-2 Follow the procedure below to use J11: ZERO
DEV .
ECS
ESC
SET
J11:ZERO DEV.
2.50 %
0 Since “J11: ZERO DEV.” contains
the previous correction, obtain the
correction value by adding 4.0% to
it. (2.50% + 4.0% = 6.50%)
Set the correction value, 6.50.
Press the key twice.
F0736.EPS
Present output is 41.0%.
Output error = 45.0 – 41.0 = 4.0%.
A10:OUTPUT (%)
41.0 %
The output is changed to 45%.
A10:OUTPUT (%)
45.0 %
SET
J11:ZERO DEV.
2.50 %
6.50
(c) Zero Point Adjustment Using the External Zero
Adjustment Screw
• Enabling/inhibiting of zero point adjustment using the
external zero-adjustment screw on the transmitter
(J20: EXT ZERO ADJ)
Follow the procedure below to enable or inhibit zero
point adjustment from the zero-adjustment screw on
the transmitter.
This is set to “ENABLE” when the instrument is
shipped.
• Example: Inhibiting zero adjustment by the
external zero-adjustment screw
ESC
SET
J20:EXIT ZERO ADJ
ENABLE
< ENABLE >
< INHIBIT> Use the or key to
select “INHIBIT.”
Press the key twice to
enter the setting.
F0737.EPS
• Zero point adjustment using external zero-adjustment
screw on the transmitter
Turn the zero-adjustment screw on the outside of the
transmitter case using a slotted screwdriver. Turn the
screw to the right to increase the zero point or to the
left to decrease the zero output; the zero adjusts in
increments of 0.01% of the range setting.
Note that the amount of adjustment to the zero point
changes according to the speed at which the screw is
turned. To make fine adjustments, turn the screw
slowly; to make coarse adjustments, turn the screw
quickly.
Note: When a zero point adjustment has been made, do not turn off
the transmitter less than 30 seconds after adjustment.
(16) 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.
F0738.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 communication cable
is disconnected during test output, it is held for
approximately 10 minutes.
2. Press the (OK) key to release test output
immediately.
(17) 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.
F0739.EPS