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In General
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Recording Channels
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Two channels in the Basic System, expandable by the use of up to two additional channel pairs to six channels
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AC Input Voltage
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AC input voltage: 230 VAC ± 10%, 50...60Hz
(115 VAC ± 10%, 50...60Hz on request)
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Power Consumption
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300 VA max.
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LED-Display
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7-Segment (Mode Indicator)
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Control Elements
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Main switch,
multifunctional toggle-switch for the mode of each CPU Plug-In
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Outline Dimensions
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19" / 3 HU rack mountable or desktop case,
approx. 483 x 140 x 380 mm (w x h x d)
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Weight
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Basic system approx. 8 kg
Additional channel pair approx. 0.5 kg
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Performance
(see also the diagrams below)
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Output Data Rate
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400 Hz
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Recording Range
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360° in the horizontal plane
± 70° in the horizontal plane
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Resolution
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< 0.1°
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Noise
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< 0.3° peak-peak (search coil orientation: horizontal 180°, vertical 0°)
< 0.8° peak-peak (search coil orientation: horizontal 180°, vertical 80°)
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Drift
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< 2° within 30 minutes after power-on (warm-up)
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Linearity
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Horizontal < 0.7° deviation within 360°
Vertical < 1° deviation between ± 70°
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Analog Outputs
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Output Voltage Swing
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±9 V
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Output Impedance
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50 Ohm
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Serial Interface
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In General
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One serial interface (RS-232) transmits the data of 2 recording channels
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Parameters
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38'400 bps, no parity, 8 data bits, 1 stop bit
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Preamplifier
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In General
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Each preamplifier is located in a separate housing
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Recording Channels
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2 channels
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Outline Dimensions
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112 x 33 x 60 mm (w x h x d)
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Weight
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250 g
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Coil Frame
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In General
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Three coils with two turns each, arranged as a cube
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Magnetic Flux Density
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23 uT typical
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Coil Material
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Anodized aluminium bars, cross section 8mm
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Coil Color
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Various colors available, contact Primelec for further details
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Dimension
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Dimension L1 is freely definable within the range from 250 mm to 700 mm,
the other dimensions (L2 to L5) are resultant |
 |
| L1: |
250 ... 700 mm |
| L2: |
L1 - 16 mm |
| L3: |
L1 - 27 mm |
| L4: |
L1 + 36 mm |
| L5: |
L1 + 26 mm |
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Weight
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Depends on the coil dimensions, for example approx. 5 kg for L1 = 700 mm
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Search Coils
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Material
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Preferably double insulated copper wire, Ø 20µm
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Weight
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Depends on material, dimensions and manufacturing process,
for example approx. 2 mg for a double insulated copper coil with
D = 2mm and n = 80
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DC-Resistance
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75 Ohm max. (3 Ohm ... 40 Ohm typical)
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Diameter
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2 mm ... 40 mm typical (see also "Effective area")
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Number of Turns
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1... 630 typical (see also "Effective area")
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Effective Area
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2.5 cm2 ... 20 cm2 (Aeff = n D^2 pi / 4)
The range of the effective area specified above refers to the
typical magnetic flux density. If the flux density is reduced by attenuating the field signals to 20 % of their nominal values, the allowed effective area may be up to approx. 150
cm2
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Diagrams
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Typical progression of the output voltage
(horizontal plane)
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Typical progression of the output voltage
(vertical plane)
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Warm-Up drift (Notes
2 to 4)
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Horizontal linearity and crosstalk to vertical, Beta at 0° (Notes
1, 2, 4)
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Vertical linearity and crosstalk to horizontal, Alpha at 180° (Notes
1, 2, 4)
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Distribution of angular noise (Notes
1, 2, 5)
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Note 1:
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Measured after 15 minutes warm-up delay with stepper-motor driven search coil under software control
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Note 2:
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Used coil frame: formed as a cube, s = 70 cm
Used search coil: Ø 15mm with 6 turns, placed in the 3D-center of the coil frame
The data was acquired over the serial interface
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Note 3:
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Measured with 6 channels working (i.e. max. internal power dissipation)
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Note 4:
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Channel 1 and channel 2 in parallel at the same search coil (i.e. identical input signal)
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Note 5:
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Each histogram is based on a recording with a total number of
readings of 12000
(30 seconds at 400 readings / second)
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Overview
Download
Product Brochure (PDF, 630 kB)