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| Home > Lake Shore Products > Magnetic Instruments & Sensors > Gaussmeters > Model 450 Gaussmeter |
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| Model 450 Gaussmeter |
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 Back to Model 450 product overview |
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| New Lake Shore Model 455 DSP Gaussmeter is replacing Model 450. |
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| Measurement Modes |
The Model 450 operates in DC, RMS, and Peak modes, with superior accuracy and resolution in DC measurement mode. Measurements to 5¾ digits are possible due to the low noise floor. With low noise and high stability, the Model 450 is ideal for field control or mapping applications. Changing fields that are often used in material analysis systems can also be measured up to 18 times per second over computer interface with excellent resolution. |
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| Best suited for linear power supply measurements or measurements of magnets and solenoids driven at line frequency, RMS mode measures periodic AC fields from 10 Hz to 400 Hz. Instrument circuitry accommodates wave forms with crest factors up to 7, with true RMS conversion. |
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| Peak circuitry in the Model 450 captures single event peaks or monitors the peak amplitude of periodic wave forms from 10 Hz to 400 Hz, with reproducible single peak measurements to 5 ms rise time. Instrument software accommodates indefinite hold time with no decay. The Model 480 Fluxmeter is a good choice if faster peak or RMS measurements are required. |
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| Range and Resolution |
| When used with appropriate probes, the Model 450 offers full scale ranges from 300 mG to 300 kG. With 5¾ digit resolution, DC field variations approaching 0.010 mG can be detected; in larger DC fields, resolution to 1 part in 300,000 is possible. For RMS and peak measurements, resolution is 4¾ digits or 1 part in 30,000. |
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| The filter feature of the Model 450 improves resolution in noisy environments by taking a running average of field readings. DC mode requires filtering to achieve 5¾ digit resolution. |
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| Interface |
The Model 450 is equipped with parallel (IEEE-488) and serial (RS-232C) computer interfaces for command and data exchange; maximum reading rate can be achieved with the IEEE-488 interface. Nearly every function of the Model 450 front panel can be performed via computer interface. The Model 450 also provides one corrected and one monitor analog voltage output. Corrected for sensor linearity, offset, and temperature effects, the corrected output is a DC voltage proportional to the display reading. The monitor output is a real-time analog voltage proportional to the field. |
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| Probes and Sensors |
The Model 450 is compatible with most Lake Shore gaussmeter Hall probes. When ordering the Model 450 with one of the gaussmeter Hall probes on the following page, a discounted package price is available. Lake Shore probes are factory calibrated for accuracy and interchangeability. Factory calibrated probes feature a programmable read-only memory (PROM) in the probe connector so that calibration data can be read automatically by the instrument. If the probe is equipped with a temperature sensor, the Model 450 reads both temperature and field signal and continuously adjusts the calculated field value. Lake Shore can also custom design a probe to meet your specific application requirements. |
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| Gaussmeter Hall Probes |
| The Model 450 includes one of the Lake Shore probes listed below - specify probe model number when ordering. Click here for details on properly selecting a probe and for a complete listing of available probe models. |
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| Axial Probes |
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L |
D |
A |
Active
area |
Stem
material |
Frequency range |
Usable full scale ranges |
Corrected accuracy (% rdg) |
Operating
temp range |
Temp
coefficient (max) zero |
Temp
coefficient (max)
calibration |
| MMA-2502-VH1 |
2 in
±0.063 in |
0.25 in dia
±0.006 in |
0.015 in
±0.005 in |
0.030 in dia
(approx) |
Aluminum |
DC and
10 Hz to
400 Hz |
30 G, 300 G,
3 kG, 30 kG |
±0.25% to
30 kG |
0 ºC to
+75 ºC |
±0.09 G/ºC |
±0.015%/ºC |
| MNA-1904-VH1 |
4 in
±0.125 in |
0.187 in dia
±0.005 in |
0.005 in
±0.003 in |
Fiberglass
epoxy |
| MMA-2502-VG |
2 in
±0.063 in |
0.25 in dia
±0.006 in |
0.015 in
±0.005 in |
Aluminum |
300 G, 3 kG, 30 kG |
±0.15% to
30 kG |
±0.13 G/ºC |
-0.005%/ºC |
| MNA-1904-VG |
4 in
±0.125 in |
0.187 in dia
±0.005 in |
0.005 in
±0.003 in |
Fiberglass
epoxy |
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| Transverse Probes |
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L |
T |
W |
A |
Active
area |
Stem
material |
Frequency range |
Usable
full scale
ranges |
Corrected accuracy (% rdg) |
Operating
temp
range |
Temp
coefficient (max) zero |
Temp
coefficient (max)
calibration |
| MMT-6J04-VH1 |
4 in
±0.125 in
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0.061 in
max |
0.180 in
±0.005 in |
0.150 in
±0.050 in
|
0.040 in dia
(approx) |
Aluminum |
DC |
30 G, 300 G,
3 kG, 30 kG |
±0.25% to
30 kG |
0 ºC to
+75 ºC |
±0.09 G/ºC |
±0.015%/ºC |
| MNT-4E04-VH1 |
0.045 in
max |
0.150 in
±0.005 in |
Rigid glass
epoxy |
DC and 10 Hz to 400 Hz |
| MMT-6J04-VG |
0.061 in
max |
0.180 in
±0.005 in |
Aluminum |
DC |
300 G,
3 kG, 30 kG |
±0.15% to
30 kG |
±0.13 G/ºC |
-0.005%/ºC |
| MNT-4E04-VG |
0.045 in
max |
0.150 in
±0.005 in |
Rigid glass
epoxy |
DC and 10 Hz to 400 Hz |
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| Flexible Transverse Probes |
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W |
T |
A |
Active
area |
Stem
material |
Frequency range |
Usable full scale ranges |
Corrected accuracy (% rdg) |
Operating
temp range |
Temp
coefficient (max) zero |
Temp
coefficient (max)
calibration |
| MFT-3E03-VH1 |
0.135 in
max
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0.025 in
max
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0.125 in
±0.005 in
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0.040 in dia
(approx) |
Flexible plastic tubing |
DC and
10 Hz to
400 Hz |
30 G, 300 G,
3 kG, 30 kG |
±0.25% to
30 kG |
0 ºC to
+75 ºC |
±0.09 G/ºC |
±0.015%/ºC |
| MFT-3E03-VG |
300 G, 3 kG, 30 kG |
±0.15% to
30 kG |
±0.13 G/ºC |
-0.005%/ºC |
| 1Temperature compensated probes |
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