Lake Shore 420, Руководство пользователя

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Lake Shore Model 420 Gaussmeter User’s Manual
Appendix A
A-7
Active Area
0.175 in.
(max.)
0.09 in. (max.)
+B
1.25 in.
5 ±0.5 in.
(Lead Length)
+
Figure B-7 Axial Hall Generator HGA-2010 Dimensions
Table B-2 Axial Hall Generator Specifications
Axial HGA-2010 HGA-3010 HGA-3030
Description General purpose axial; high
sensitivity Instrumentation quality axial;
low temperature coefficient;
phenolic package Instrumentation quality axial;
phenolic package
Active area 0.005 x 0.005 inch square 0.030 inch diameter circle 0.030 inch diameter circle
Input resistance 450 to 900 ohms 1 ohm 2 ohms
Output resistance 550 to 1350 ohms 1 ohm 2 ohms
Nominal control current
(I
CN
)
1 mA 100 mA 100 mA
Maximum continuous
current (non-heat sinked) 10 mA 300 mA 300 mA
Magnetic sensitivity (I
C
=
nominal control current)
11 to 28 mV/kG 0.56 to 1.04 mV/kG 6.0 to 10.0 mV/kG
Maximum linearity error
(sensitivity versus field) ±1% RDG (-10 to +10 kG)
±2% RDG (-20 to +20 kG) ±1% RDG (-20 to +20 kG)
±1.5%
RDG (-100 to +100
kG)
±0.25% RDG (-10 to +10 kG)
±1.00% RDG (-30 to +30 kG)
Zero field offset voltage
(I
C
= nominal control
current)
±2.8 mV (max.) ±50 µV (max.) ±75 µV (max.)
Operating temperature
range –20 to 75 °C –40 to +100 °C –40 to +100 °C
Mean temperature
coefficient of magnetic
sensitivity –0.06%/°C (max.) ±0.005%/°C (max.) –0.04%/°C (max.)
Mean temperature
coefficient of offset (I
C
=
nominal control current)
±1 µV/°C (max.) ±0.4 µV/°C (max.) ±0.3 µV/°C (max.)
Mean temperature
coefficient of resistance +0.15%/°C (approx.) ±0.15%/°C (approx.) +0.18%/°C (approx.)
Leads 34 AWG copper with poly-
nylon insulation 34 AWG copper with poly-
nylon insulation 34 AWG copper with poly-
nylon insulation