Lake Shore 234, Руководство пользователя

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Lake Shore Model 234/234D User’s Manual
1-6 Introduction
Table 1-1. Model 234 Specifications (Continued)
Typical CalCurve Target Accuracy:
±1 mK below 10 K ±100 mK 40 K - 100 K
±5 mK 10 K - 20 K ±1 K above 100 K
±25 mK 20 K - 40 K
Magnetic Field Use: Carbon-Glass: T
≥
2 K and B
≤
19 T.
Cernox: Recommended.
Germanium: Not Recommended.
OUTPUT:
Number of Outputs: One
Output Type: Current source, isolated from power source.
Output or sensor can be grounded, but not both.
Output Range: 4 - 20 mA or 0 - 20 mA
(for 0 - 10 V with 500
Ω
, 0.02%, 25 PPM Resistor).
Output Compliance: 10 V (500
Ω
maximum load).
Output Temperature Ranges:
0 - 10 K (Range 1) 0 - 100 K (Range 3) 0 - 300 K (Range 5)
0 - 20 K (Range 2) 0 - 200 K (Range 4) 75 - 325 K (Range 6)
4 – 20 mA Output (I/V OUT Switch in I Position):
Output Resolution:
Current: 1.22 µA (0.006% of full scale)
Temperature Equivalence:
0 - 10 K 0.8 mK 0 - 200 K 15.3 mK
0 - 20 K 1.5 mK 0 - 300 K 22.9 mK
0 - 100 K 7.6 mK 75 - 325 K 19.1 mK
Output Electronic Accuracy:
Current: ±5 µA (±0.025% of full scale)
Temperature Equivalence:
0 - 10 K 3.1 mK 0 - 200 K 62.5 mK
0 - 20 K 6.2 mK 0 - 300 K 93.7 mK
0 - 100 K 31.2 mK 75 - 325 K 78.1 mK
Output Temperature Coefficient:
Current : ±2 µA/°C (±0.01%/°C)
Temperature Equivalence:
0 - 10 K ±1 mK/°C 0 - 200 K ±20 mK/°C
0 - 20 K ±2 mK/°C 0 - 300 K ±30 mK/°C
0 - 100 K ±10 mK/°C 75 - 325 K ±25 mK/°C
0 – 20 mA Output (I/V OUT Switch in V Position,
0 – 10 V Out with 500
Ω
, 0.02%, 25 PPM Load Resistor):
Output Resolution:
Voltage: 0.61 mV
Temperature Equivalence:
0 - 10 K 0.6 mK 0 - 200 K 12.2 mK
0 - 20 K 1.2 mK 0 - 300 K 18.3 mK
0 - 100 K 6.1 mK 75 - 325 K 15.2 mK