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3 Specifications and Environmental
Conditions
3.1 Specifications
Resistance Range
0
Ω
to 500 k
Ω
Resistance Accuracy, PRT, one
year
†
0
Ω
to 25
Ω
: 0.002
Ω
25
Ω
to 400
Ω
: 0.008% (80 ppm) of reading
Resistance Accuracy,
thermistor, one year
†
0
Ω
to2k
Ω
:0.4
Ω
2k
Ω
to 200 k
Ω
: 0.02% (200 ppm) of reading
200 k
Ω
to 500 k
Ω
: 0.03% (300 ppm) of reading
Temperature Range PRT: –200°C to 962°C (–328°F to 1764°F)
Thermistor: –50°C to 150°C (–58°F to 302°F)
Temperature Accuracy, PRT
†
–200°C to 100°C: ±0.025°C (±0.045°F)
100°C to 400°C: 0±.05°C (±0.09°F)
400°C to 800°C: ±0.1°C (±0.18°F)
800°C to 962°C: ±0.15°C (±0.27°F)
Temperature Accuracy,
2.25 k
Ω
thermistor
†
–50 to 25°C: ±0.005°C (±0.009°F)
25°C to 50°C: ±0.01°C (±0.018°F)
50°C to 75°C: ±0.03°C (±0.054°F)
75°C to 100°C: ±0.08°C (±0.144°F)
Temperature Accuracy,
10 k
Ω
thermistor
†
0 to 50°C: ±0.005°C (±0.009°F)
50°C to 75°C: ±0.01°C (±0.018°F)
75°C to 100°C: ±0.02°C (±0.036°F)
100°C to 125°C: ±0.05°C (±0.09°F)
125°C to 150°C: ±0.1°C (±0.18°F)
Temperature Accuracy,
100 k
Ω
thermistor
†
0 to 50°C: 0.006°C (0.011°F)
50°C to 150°C: 0.009°C (0.016°F)
Resistance Resolution
0.001
Ω
Temperature Resolution 0.001°C, F, K, R
Probe IEC-751 or DIN-43760 PRT
Callendar-Van Dusen calibrated PRT; nominal 100
Ω
ITS-90 calibrated 25
Ω
or 100
Ω
PRT
YSI-400 series or equivalent 2252
Ω
thermistor
Steinhart-Hart thermistor polynomial; nominal R(25°C) 2k
Ω
to
100k
Ω
Probe Connector Hart INFO-CON connector
Maximum Acceptable Probe
Lead Resistance
10
Ω
Probe Excitation Current PRT: 0.5 mA
Thermistor: 5
μ
A
Measurement Period 1 second
9
3 Specifications and Environmental Conditions
Specifications