1.5 Technical Data
ITC500 / page 13
Thermistor (2 kΩ / 20 kΩ range)
Measurement current 100µA / 10 µA
Control range 10 Ω ... 19.99 kΩ / 100 Ω ... 199.9 kΩ
Setting resolution (manual control) 1 Ω / 10 Ω
Setting resolution (remote control) 0.3 Ω / 3 Ω
Measurement resolution (manual control) 1 Ω / 10 Ω
Measurement resolution (remote control) 0.1 Ω / 1 Ω
Accuracy ± 5 Ω / ± 50 Ω
Temperature stability (24 hours)
1)
≤ 0.5 Ω / ≤ 5 Ω
Temperature control input
Input resistance 10 kΩ
Control voltage -10 ... +10 V
Transmission coefficient IC-sensors
2 °C/V ±5%
Transmission coefficient thermistor (20 kΩ / 200 kΩ range)
0.2 kΩ/V / 2 kΩ/V ±5%
Temperature control Output
Load resistance > 10 kΩ
Output voltage
0 ... ± 10 V
Transmission coefficient thermistor 500 mV/ kΩ / 50 mV/kΩ ± 5%
Transmission coefficient IC sensors 50 mV / °C ± 5%
Temperature window protection
Setting range T
WIN
0.5 °C ... 20 °C
Setting range R
WIN
(20 kΩ / 200 kΩ range) 50 Ω ... 2 kΩ / 500 Ω ... 20 kΩ
Computer Interface
Setting resolution 16 Bit
Measurement resolution 12 ... 18 Bit
2)
1)
Due to the nonlinear conversion from Ω to °C the stability in °C depends on the operating conditions
and the characteristics of the thermistor. E.g. for a typical thermistor at a set point of 10kΩ (25°C), a
0.5Ω stability translates into about 1mK temperature stability. At a set point of 5kΩ (38°C), the stability
is about 2mK.
2)
in High Resolution mode, at reduced measurement speed
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