Ametek Jofra ASC-400 Manuel d'ajustement - Page 6
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3.0
Adjusting and calibrating the ASC-400
You should recalibrate the ASC-400 at the required calibration interval (defined by the
factory as 1 year) and adjust if necessary.
Adjustment of the ASC-400 is a menu driven process. It consists of 15 different menu selec-
tions for calibration of the different functions. The only requirement being that mV must be
adjustment before CJC.
Once a particular adjustment menu selection has been made the user is prompted to either
input a signal into the ASC-400 or enter the output value of a signal from the ASC-400.
When inputting signals into the ASC-400, the readings are taken after the {enter} key is
pressed and before the next prompt. Make sure the input to the ASC-400 is stable before the
{enter} key is pressed and remains stable until the next prompt appears.
When entering the outputted value of a signal, make sure that value is stable before you enter
it; there is no backspace.
4.0
Test equipment
Recommended test equipment is listed in the table below. Equipment with similar or better
specifications can be used if the listed equipment is not available.
Equipment
Manufacturer
Digital Multimeter
Fluke
Calibrator
Fluke
Low thermal EMF
Multi Contact
banana to banana
leads (red).
Low thermal EMF
Multi Contact
banana to banana
leads (black).
TC – banana
cable
Thermocouple
type J TC – TC
cable.
Tube for
barometric
reference.
For the barometric reference in ASC-400-1, a barometric reference with an accuracy of 0.125
mbar or better is required.
128897 02
Model
Quantity
8508A
1
5520A
1
28.0074-100-22
2
28.0074-100-21
2
1
1
1
2014-12-05
Purpose
All functions
except CJC and
ohm measure.
All source
functions and
CJC.
All functions
except mV and
CJC.
All functions
except mV and
CJC.
mV source and
measure.
CJC.
Barometric
reference.
5