TEXIO DL-1060, Instruction Manual

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3.1.7 Sensor Selection for Temperature Measurements
The multimeter supports both thermocouple and RTD. User needs to configure the
multimeter for the right sensor type before they can make temperature
measurements.
RTD
Definition
If you are using RTD, the options are: PT100, D100, F100, PT385, PT3916,
user-defined RTD, NTCT and SPRTD. If you need to change the factors that are used
to calculate the temperature in RTD, choose user-defined RTD in which you are able to
change any factors as you wish. The default factors used are listed in
Table 3-3 :
Table 3-3
Type Alpha Beta Delta R-zero
PT100 0.003850 0.10863 1.49990 100 Ω
D100 0.003920 0.10630 1.49710 100Ω
F100 0.003900 0.11000 1.49589 100Ω
PT385 0.003850 0.11100 1.50700 100Ω
PT3916 0.003916 0.11600 1.50594 100Ω
NTCT 0.003850 0.10863 1.49990 100 Ω
Here is the temperature equation that is used to determine the RTD temperature:
When
C t
 
0
:
( )
 
100 1
3 2
0
− + + + =
t Ct Bt At R R
t
When
C t C
   
630 0
:
( )
2
0
1 Bt At R R
t
+ + =
Where:





 +
=
100
1


A
4
10
−  − =

B
8
10
−
 − =

C