3200 Series
96 Part No HA028651 Issue 7.0 Apr-09
16.3.3
To Calibrate RTD Input
The two points at which the RTD range is calibrated are 150.00
Ω
and 400.00
Ω
.
Before starting RTD calibration:
•
A decade box with total resistance lower than 1K must be connected in place of the RTD as indicated on the
connection diagram in section 16.1.4
before the instrument is powered up
. If at any time the instrument was
powered up without this connection then at least 10 minutes must elapse from the time of restoring this connection
before RTD calibration can take place.
•
The instrument should be powered up for at least 10 minutes.
•
Before calibrating the RTD input the mV range must be calibrated first
Operation
Do This
Display View
Additional Notes
Select the Calibration List
header
1.
From any display press
as many
times as necessary until the ‘C A L ’
page
header is displayed.
Scrolling display ‘
C A L IB R A T IO N
L IS T
’
Select the calibration
phase
2.
Press
°
to select ‘P H A S E ’
none
p h a s e
Scrolling display ‘
C A L IB R A T IO N
p h a s e
’
Set the decade box for 150.00
Ω
Select the low calibration
point (150
Ω
)
3.
Press
V
or
W
to choose ‘150r
Calibrate the low point
4.
Press
°
to select ‘GO’
5.
Press
V
or
W
to choose ‘
YES
’
Scrolling display ‘
C A L IB R A T IO N
s ta rt
’
The controller automatically calibrates to the injected 150.00
Ω
input. The display will show
busy
then
pass
(if calibration is successful) or ‘
FAIL
’
if not.
Fail may be due to an incorrect input resistance
Set the decade box for 400.00
Ω
Select the high calibration
point (400
Ω
)
7.
Press
V
or
W
to choose ‘400r
Calibrate the high point
8.
Repeat 5 and 6 above to calibrate the
high point
The controller will again automatically calibrate to the injected 400.00
Ω
input. If it is not successful then ‘
FAIL
’
will be displayed
