9
2562/2568 PRT Scanner Module
This section explains the features and operation of the optional 2562/2568 PRT
Scanner Module.
9.1
Description
The 2562/2568 PRT Scanner Module is an add-on module that allows the 1560
to measure temperature with up to eight SPRT, PRT, and RTD sensors. The
modules accept two-, three-, or four-wire sensors with nominal resistance of 25
and 100
Ω
(2562) or 500 and 1K
Ω
(2568). The excitation current alternates po-
larity to minimize the effects of thermoelectric offsets. Up to eight sensors can
be connected to the 2562/2568 simultaneously and measured alternately.
9.2
Specifications
2562
2568
Resistance range
0 to 400
Ω
0 to 4 k
Ω
Resistance accuracy, one-year
(Using four-wire connection)
1, 3
0 to 25
Ω
: 0.001
Ω
25 to 400
Ω
: 40 ppm of read-
ing
0 to 250
Ω
: 0.01
Ω
250 to 4K
Ω
: 40 ppm of read-
ing
Resistance accuracy, short-term
(Using four-wire connection)
1, 2, 3
0 to 25
Ω
: 0.0005
Ω
25 to 400
Ω
: 20 ppm of read-
ing
0 to 250
Ω
: 0.0075
Ω
250 to 4K
Ω
: 30 ppm of read-
ing
Temperature accuracy, one-year (Using
four-wire connection, not including probe
uncertainty)
1, 3
–100°C
0°C
100°C
200°C
300°C
400°C
500°C
600°C
±0.006°C
±0.010°C
±0.014°C
±0.020°C
±0.024°C
±0.028°C
±0.034°C
±0.040°C
Temperature coefficient
1
0.5 ppm/°C
2.5 ppm/°C
Excitation current
1.0, 1.4 mA; 1 Hz
0.1, 0.05 mA; 1 Hz
Maximum lead resistance
100
Ω
Sample time
2 seconds
Number of channels
8
Recommended operating temperature
range
1
18 to 28°C (64 to 82°F)
Absolute operating temperature range
5 to 35°C (40 to 95°F)
Weight
2.5 lbs. (1.1 kg)
125
9 2562/2568 PRT Scanner Module
Description
