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PRESYS
Instruments
2.2 - CONF Menu
CF: Selects the temperature unit between ºC and ºF. The ITS-90 or IPTS-68
temperature scales are selected for both for input readings and the internal reference
blackbody target
If RTD Pt-100 input has been selected, this menu changes, adding the
options °C-CVD and ºF-CVD:
Under these options Callendar-Van Dusen parameters for RTD input Pt-100
can be configured. These coefficients belong to the equation described below:
Where t refers to this temperature range and R0 to the resistance at 0 °C.
Set the coefficients R0, A, B and C and their exponents in E_A, E_B, E_C.
LCD: This option sets the display contrast. Use the key
contrast and finish the operation by pressing the key ENTER.
BT: Indicates the battery voltage or the battery charger as the instrument's power
supply is switched off or on, respectively.
Battery level
4.0 to 7.0 V
< 4.0 V
DT: Updates the date and time of the calibrator. Thus, when the calibrator performs a
calibration in the automatic mode via ISOPLAN, all data are registered together with
date and time of occurrence. Every time the calibrator is powered off, the internal clock
does not continue to be updated.
However, the ISOPLAN software can automatically update the calibrator date
and time with the computer internal clock. Otherwise, use keys
the field that blinks and the keys
confirms the last selection.
Page 8
CF
PRG
SC
BT
ºC-90
ºC-68
ºC-68
ºC-CvD
R(t) = R
{1 + At + Bt
0
R0
A
E_A
E_B
Battery state
and
MEM
LCD
DT
BZ
ºF-90
ºF-68
ºF-68
ºF-CvD
(t-100)} , C=0 for t ≥ 0°C
2
3
+ Ct
B
C
E_C
and
normal
low
LOW BATTERY
to go to another field. The key ENTER
T-500PIR
until you get a better
Display
----------
and
to change
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