Lake Shore Model 421, Руководство пользователя

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Lake Shore Model 421 Gaussmeter User’s Manual
5-2 Accessories and Probes
Accessories (Continued)
MODEL
NUMBER
DESCRIPTION OF ACCESSORY
MH-XX
Helmholtz Coils . Provides stable low magnetic field when used with customer-supplied
power supply. Often used to provide reference field to help check gaussmeter accuracy.
Three coils are available as follows. Refer to Paragraph 5.3.
MH-2.5 Helmholtz Coil, 2.5-inch inner diameter, field strength:
≈
30 G @ 1 A,
maximum continuous current: 2 A, coil resistance:
≈
3
Ω
. See Figure 5-8.
MH-6 Helmholtz Coil, 6-inch inner diameter, field strength:
≈
50 G @ 2 A,
maximum continuous current: 2 A, Coil Resistance:
≈
10
Ω
. See Figure 5-9.
MH-12 Helmholtz Coil. 12-inch inner diameter, field strength:
≈
25 G @ 1 A,
maximum continuous current: 2 A, Coil Resistance:
≈
20
Ω
. See Figure 5-10.
MRA-XXX
MRT-XXX
Reference Magnets . High-quality reference magnets are available in transverse (flat) and
axial (round) configurations. Refer to Paragraph 5.4 and see Figure 5-11.
MRA-312-100 Axial Reference Magnet: 0.312" inside diameter, 100 G, 1%
MRA-312-200 Axial Reference Magnet: 0.312" inside diameter, 200 G, 1%
MRA-312-300 Axial Reference Magnet: 0.312" inside diameter, 300 G, 1%
MRA-312-500 Axial Reference Magnet: 0.312" inside diameter, 500 G, 1%
MRA-312-1K Axial Reference Magnet: 0.312" inside diameter, 1 kG, 1%
MRA-312-2K Axial Reference Magnet: 0.312" inside diameter, 2 kG, 1%
MRT-062-200 Transverse Reference Magnet: 0.062" gap, 200 G, 1%
MRT-062-500 Transverse Reference Magnet: 0.062" gap, 500 G, 1%
MRT-062-1K Transverse Reference Magnet: 0.062" gap, 1 kG, 0.5%
MRT-062-2K Transverse Reference Magnet: 0.062" gap, 2 kG, 0.5%
MRT-062-5K Transverse Reference Magnet: 0.062" gap, 5 kG, 0.5%
MRT-062-10K Transverse Reference Magnet: 0.062" gap, 10 kG, 5%
MRT-343-50 Transverse Reference Magnet: 0.343" gap, 50 G, 1%
MRT-343-100 Transverse Reference Magnet: 0.343" gap, 100 G, 1%
MPEC-XXX
Probe Extension Cables . Four cables are available. Each extension cable contains a
EEPROM for calibration data. Each extension cable must be matched to a specific probe.
To maintain probe accuracy, that probe and extension cable must be calibrated together
at Lake Shore. The probe will exhibit its full accuracy if used without the extension cable.
Part numbers and cables lengths are defined as follows:
MPEC-10 Probe Extension Cable – 3 meters (10 feet)
MPEC-25 Probe Extension Cable – 7.6 meters (25 feet)
MPEC-50 Probe Extension Cable – 15.2 meters (50 feet)
MPEC-100 Probe Extension Cable – 30.5 meters (100 feet)
RM-1/2
Half-Rack Mounting Kit for One Gaussmeter. Half-length mounting panel and mounting
ears to attach a Model 421 to a 483 mm (19-inch) rack mount space. See Figure 5-14.
RM-2
Rack Mounting Shelf for Two Gaussmeters. Mounting shelf to attach two Model 421
Gaussmeters to a 483 mm (19-inch) rack mount space. See Figure 5-15.