THORLABS ITC502, Руководство по эксплуатации

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1.5 Technical Data
ITC500 / page 13
Thermistor (2 k
Ω
/ 20 k
Ω
range)
Measurement current 100
µ
A / 10
µ
A
Control range 10
Ω
... 19.99 k
Ω
/ 100
Ω
... 199.9 k
Ω
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 k
Ω
Control voltage -10 ... +10 V
Transmission coefficient IC-sensors 2 °C/V
±
5%
Transmission coefficient thermistor (20 k
Ω
/ 200 k
Ω
range) 0.2 k
Ω
/V / 2 k
Ω
/V
±
5%
Temperature control Output
Load resistance
>
10 k
Ω
Output voltage 0 ...
±
10 V
Transmission coefficient thermistor 500 mV/ k
Ω
/ 50 mV/k
Ω
± 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 k
Ω
/ 200 k
Ω
range) 50
Ω
... 2 k
Ω
/ 500
Ω
... 20 k
Ω
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 10k Ω (25°C), a
0.5 Ω stability translates into about 1mK temperature stability. At a set point of 5k Ω (38°C), the stability
is about 2mK.
2)
in High Resolution mode, at reduced measurement speed