4.4 - Other functions
M2007/3en
TCT-2301 Operating instructions
57
©BTG 2004
4.4.2
Setting alarm limits
In the system there is one alarm. The alarm can be set on:
•
Cons (Output value, chan. 1)
•
Itemp (internal temperature)
•
AnaIn (analog input, 0-20mA)
•
LedCur (LED current, 0-1000%)
When the alarm is active it affects the digital output signal called Alarm
and the value will be written to an event log in the transmitter.
The alarm output should be connected to mill equipment. See section
3.3.6:
Transmitter input and output, measuring range connections
for de-
tails.
1. From main menu, press
,
.
2. Select alarm to set using
. (One alarm only)
3. Select limits to activate the alarm using
and
.
The same units are used for the set value as for the selected alarm.
4. Activate alarm using
.
4.4.3
Offset adjustment
Offset adjustment can be made in two ways:
A: Based on a laboratory sample
B: Based on a deviation detected from laboratory samples.
!
The entire calibration curve is moved on the basis of a single point,
so it is most important that the laboratory sample value for that
point is correct.
The offset adjustment, which is a zero point displacement, can be made
on all types of calibrations.
A. Offset adjustment based on a laboratory sample
Procedure:
1. Go to MAIN MENU option
.
Misc
Alarm &
diag-
nostics
Set
alarm
High
x.x
Low
x.x
Alarm
ON
4-20mA MODEMPRINTER
PWR
EJECT
ON/OFF
MEMORY CARD
SPC-1000
Communication Terminal
Take
sample
Load
lab.
0.00%
Calc.
Offset
+5.00%
Menu
Sensor cons.= 3%
acc.to original cal.
Action:
1. Push <Take sample> and collect
sample
2. After lab. evaluation push
<Load lab.>and enter value
3. Push <Calc.> alt. enter the
actual value at <Offset>.
4-20mA MODEMPRINTER
PWR
EJECT
ON/OFF
MEMORY CARD
SPC-1000
Communication Terminal
Take
sample
Load
lab.
0.00%
Calc.
Offset
+5.00%
Menu
Sensor cons.= 3%
acc.to original cal.
Action:
1. Push <Take sample> and collect
sample
2. After lab. evaluation push
<Load lab.>and enter value
3. Push <Calc.> alt. enter the
actual value at <Offset>.
Send
page
Offset
x.xx%