Cewki HELMHOLTZA - Specjalistyczne Testery, Przyrządy i Systemy Pomiarowe

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Cewki HELMHOLTZA

EMC i BHP > ANTENY
Cewki HELMHOLTZA służą (m.in.) do wytwarzania slnych pól magnetycznych o znanej wartości, dzięki którym można kalibrować mierniki natężenia pola. Precyzyjnie określona geometria cewki w połączeniu z informacją o ilości zwojów umożliwia dokłądne zdefiniowanie zależności otrzymywanego natężenia pola magnetycznego od zasilania układu cewek.
Zasilanie cewek może się odbywać przy użyciu precyzyjnych zasilaczy prądu zmiennego lub z sieci zasilania poprzez układy dopasowująco - ograniczające
Number of turns:6 Maximum Coil Current:40 A (1 min.)
15 A (15 min.)Nominal Coil Current:12 A continuousCoil Spacings (centered):50 ... 80 mm   The following data refers to a coil separation of 60 mm   Max. Magn. Field Strength:2860 A/m (1 min.) Nominal Magn. Field Strength:860 A/m continuous Magn. Field Strength, 1 A Coil Current:
71.55 A/m
Coil Diameter:120 mm Mechanical Dimensions:290 x 220 x 130 mm Terminals:4 mm female Inductance (Single Coil):8 µH Inductance (Coil Pair):
18.7 µH / 50 mm
18.2 µH / 60 mm
17.9 µH / 70 mm
Usable Frequency Range:DC - 5 MHz Resonance Frequency:> 8 MHz
Weight: 2.8 kg
Number of turns:98 Maximum Coil Current:40 A (1 min.)
15 A (15 min.) Nominal Coil Current:12 A continuous Coil Spacings (centered):approx.  29 ... 95 mmMax. Magn. Field Strength:64 kA/m (1 min.) Nominal Magn. Field Strength:20 kA/m continuousMagn. Field Strength, 1 A Coil Current:
1598 A/m Conversion Current-Fieldstrength: 64.07 dB/m
Coil Diameter:84 mm (58-110 mm) Free Coil Distance for DuT:0 ... 66 mmMechanical Dimensions:240 x 240 x 130 mm Terminals:4 mm female Inductance (Single Coil):0.84 mH Inductance (Coil Pair):
2.3 mH / 30 mm
2.0 mH / 50 mm
1.8 mH / 90 mm
Usable Frequency Range:DC - 200 kHz Resonance Frequency:> 600 kHz
Weight: 4.1 kg
Number of turns:9 Maximum Coil Current:55 A (5 min.)Nominal Coil Current:33 A continuousCoil Spacings (centered):116 mm / 132 mm   The following data refers to a coil separation of 116 mm   Max. Magn. Field Strength:3053 A/m (5 min.) Nominal Magn. Field Strength:1832 A/m continuousMagn. Field Strength, 1 A Coil Current: 55.52 A/m, 154.89 dBµA/m
Coil Diameter:232 mm Mechanical Dimensions:0.20 m x 0.25 m x 0.39 mMax. cubical shaped DuT:11.3 cm x 11.3 cm x 11.3 cm Terminals:4 mm female jacks
7 mm screw terminals Inductance (Single Coil):36 µHInductance (Coil Pair):
80 µH
Usable Frequency Range:DC - 2.5 MHz Resonance Frequency:> 3.5 MHz
Weight: 4.9 kg
Number of turns:81 Maximum Coil Current:6 A (5 min.)Nominal Coil Current:5 A continuousCoil Spacings (centered):116 mm / 132 mm   The following data refers to a coil separation of 116 mm   Max. Magn. Field Strength:3000 A/m (5 min.) Nominal Magn. Field Strength:2000 A/m continuous Magn. Field Strength, 1 A Coil Current: 500A/m, 174 dBµA/m
Coil Diameter:232 mm Mechanical Dimensions:0.20 m x 0.25 m x 0.39 mMax. cubical shaped DuT:11.3 cm x 11.3 cm x 11.3 cm Terminals:4 mm female 7 mm screw terminals Inductance (Single Coil):2.83 mHInductance (Coil Pair): 6.42 mH
Usable Frequency Range:DC - 300 kHz Resonance Frequency:> 400 kHz
Weight: 4.7 kg
HHS 5204-12 - Circular Helmholtz Coils
Number of turns:12 Maximum Coil Current:60 A (5 min.) Nominal Coil Current:30 A continuous Coil Spacings:200 mm, 250 mm, 300 mm   The following data corresponds to a coil spacing of 200 mm   Max. Magn. Field Strength:2500 A/m (5 min.) Nominal Magn. Field Strength:1288 A/m continuous Magn. Field Strength, 1 A Coil Current:
42.93 A/m  152.66 dBµA/m
Conversion Current->Fieldstrength:
32.66 dB/mCoil Diameter:400 mm Mechanical Dimensions:0.38 m x 0.58 m x 0.42 m Terminals:4 mm female Inductance (Single Coil):1.20 µH Inductance (Coil Pair):2.40 - 2.60 mH Usable Frequency Range:DC - 500 kHz Resonance Frequency:>1.4 MHz
Weight: 10.2 kg

Number of turns:36 Maximum Coil Current:20 A (5 min.) Nominal Coil Current:10 A continuous Coil Spacings:200 mm, 250 mm, 300 mm   The following data corresponds to a coil spacing of 200 mm   Max. Magn. Field Strength:2500 A/m (5 min.) Nominal Magn. Field Strength:1288 A/m continuous
Magn. Field Strength, 1 A Coil Current:
128.8 A/m
162.2 dBµA/m
Conversion Current->Fieldstrength:42.2 dB/m Coil Diameter:400 mm Mechanical Dimensions:0.38 m x 0.58 m x 0.42 m Terminals:4 mm female Inductance (Single Coil):1.15 mHInductance (Coil Pair):2.56 mH Usable Frequency Range:DC - 150 kHz Resonance Frequency:>200 kHz
Weight: 8.5 kg
Number of turns:8 Maximum Coil Current:55 A (5 min.) Nominal Coil Current:34 A continuous Coil Spacings (centered):300 mm Max. Magn. Field Strength:1060 A/m (5 min.) Nominal Magn. Field Strength:650 A/m continuous Magn. Field Strength, 1 A Coil Current:
19.23 A/m
145.68 dBµA/m
Coil Diameter:600 mmMax. Cubical shaped DuT:32.5 x 32.5 x 32.5 cm Mechanical Dimensions:0.64 m x 0.79 m x 0.42 m Terminals:4 mm female Inductance (Single Coil):91 µH
Inductance (Coil Pair):200 µH Usable Frequency Range:DC - 800 kHz
Resonance Frequency:> 1500 kHz
Weight: 17.0 kg
Recommended accessories: NFCN 9732 85 kHz
Number of turns:16 Maximum Coil Current:55 A (5 min.) Nominal Coil Current:33 A continuous Coil Spacings (centered):300 mm Max. Magn. Field Strength:2100 A/m (5 min.) Nominal Magn. Field Strength:1260 A/m continuousMagn. Field Strength, 1 A Coil Current:
38.17 A/m
151.63 dBµA/m
Coil Diameter:600 mmMax. Cubical shaped DuT:32.5 x 32.5 x 32.5 cm Mechanical Dimensions:0.64 m x 0.79 m x 0.42 m Terminals:4 mm female Inductance (Single Coil):340 µHInductance (Coil Pair):750 µH Usable Frequency Range:DC - 500 kHz Resonance Frequency:> 700 kHz
Weight: 20.4 kg
Number of turns:132 Maximum Coil Current:15 A (5 min.) Nominal Coil Current:10 A continuous Coil Spacings (centered):300 mm Max. Magn. Field Strength:4713 A/m (5 min.) Nominal Magn. Field Strength:3142 A/m continuous Magn. Field Strength, 1 A Coil Current:
314.2 A/m
169.97 dBµA/m
Coil Diameter:600 mm  Max. Cubical shaped DuT:32.5 x 32.5 x 32.5 cmMechanical Dimensions:0.64 m x 0.79 m x 0.42 mTerminals: 4 mm banana jacks screw terminals
Inductance (Single Coil):22.4 mH Inductance (Coil Pair):49.9 mHUsable Frequency Range:DC - 30 kHz Resonance Frequency:> 50 kHz
Weight: 27.5 kg
Number of turns:10 Maximum Coil Current:20 A (5 min.) Nominal Coil Current:10 A continuousMax. Magn. Field Strength:300 A/m (5 min.) Nominal Magn. Field Strength:150 A/m continuous Magn. Field Strength, 1 A Coil Current:
15 A/m (Coil Dist. 0.4 m)
Mechanical Dimensions:1.0 x 1.0 x 0.63 m Coil Separation acc. IEC 1000-4-8:0.40 m Coil Separation for best uniformity:0.57 mTerminals:4 mm female Inductance (per Coil):0.36 mH Usable Frequency Range:DC - 150 kHz Resonance Frequency:> 600 kHz
Weight: 10 kg
Number of turns:100 Maximum Coil Current:15 A (5 min.) Nominal Coil Current:9 A continuous Inner side length of the coil:1.0 m Electrical side length of the coil:1.04 m Maximum Coil Separation:0.70 mUsable Frequency Range:DC - 10 kHz Inductance (per Coil):31.3 mH Resonance Frequency (Pair of Coils):>25 kHz Weight:36.5 kg Terminals:4 mm female   
The following data is valid for 0.4 m coil distance: Coil Separation acc. IEC 1000-4-8:0.40 mMax. Magn. Field Strength:2183 A/m (5 min.) Nominal Magn. Field Strength:1310 A/m continuous Magn. Field Strength, 1 A Coil Current:
145.54 A/m (Coil Dist. 0.4 m)
The following data is valid for 0.566 m coil distance: Coil Separation for best uniformity along an axes through the coil center:0.566 m Magn. Field Strength, 1 A Coil Current:124.66 A/m (Coil Dist. 0.566 m) Recommended Accessories:NFCN 9732-120
Number of turns:100 Maximum Coil Current:20 A (5 min.) Nominal Coil Current:15 A continuous Inner side length of the coil:1.0 m Electrical side length of the coil:1.04 m Maximum Coil Separation:0.70 m Usable Frequency Range:DC - 10 kHz Inductance (per Coil):31.3 mH Resonance Frequency (Pair of Coils):>25 kHz Weight:56 kgTerminals:4 mm female      
The following data is valid for 0.4 m coil distance:   Coil Separation acc. IEC 1000-4-8:0.40 m Max. Magn. Field Strength:2900 A/m (5 min.) Nominal Magn. Field Strength:1746 A/m continuous Magn. Field Strength, 1 A Coil Current:
145.54 A/m (Coil Dist. 0.4 m)
The following data is valid for 0.566 m coil distance:    Coil Separation for best uniformity along an axes through the coil center:0.566 m Magn. Field Strength, 1 A Coil Current:124.66 A/m (Coil Dist. 0.566 m)
Number of turns:10
Maximum Coil Current:20 A (5 min.) Nominal Coil Current:10 A continuousMaximum Coil Separation:0.70 m
Usable Frequency Range:DC - 150 kHz
Inductance (per Coil):0.45 mH Resonance Frequency (Pair of Coils):>500 kHz
Weight:12 kg
Terminals:4 mm femaleCoil Separation acc. IEC 1000-4-8:0.48 m Coil Separation for best uniformity:0.68 mMax. Magn. Field Strength:250 A/m (5 min.)
Nominal Magn. Field Strength:125 A/m continuous
Magn. Field Strength, 1 A Coil Current: 12.45 A/m (Coil Dist. 0.48 m)
Number of turns: 50 Maximum Coil Current: 8 A (5 min.)
Nominal Coil Current: 5 A continuous
Max. Magn. Field Strength: 390 A/m (5 min.)
Nominal Magn. Field Strength: 240 A/m continuos
Magn. Field Strength, 1 A Coil Current: 48.5 A/m (coil Dist. 0.75 m)
Coil Separation acc. IEC 1000-4-8: 0.75 m
Maximum Coil Separation: 0.82 m
Mechanical Dimensions: 1.36 m x 1.36 m x 0.9 m
Usable Frequency Range: DC - 20 kHz
Inductance (per Coil): 10.5 mH
Resonance Frequency (Pair of Coils): >30 kHz
Weight: 18 kg
Terminals: 4 mm female
Number of turns: 100
Maximum Coil Current: 15 A (5 min.)
Nominal Coil Current: 9 A continuous
Nominal Magn. Field Strength: 900.9 A/m continuos
Magn. Field Strength, 1 A Coil Current: 100.096 A/m (coil Dist. 0.705 m)
Maximum Coil Separation: 0.83 m
Mechanical Dimensions: 1.46 m x 1.36 m x 0.91 m
Usable Frequency Range: DC - 5 kHz
Inductance (Coil pair): 88.3 mH (Coil Dist. 0.705 m)
Resonance Frequency (Pair of Coils): >13 kHz
Weight: 44.5 kg
Terminals: 4 mm female
Number of turns: 10
Maximum Coil Current: 20 A (5 min.)
Nominal Coil Current: 10 A continuous
Max. Magn. Field Strength: 200 A/m (5 min.)
Nominal Magn. Field Strength: 100 A/m continuos
Magn. Field Strength, 1 A Coil Current: 9.96 A/m (coil Dist. 0.6 m)
Coil Separation acc. IEC 1000-4-8: 0.6 m
Maximum Coil Separation: 0.86 m
Mechanical Dimensions: 1.5 m x 1.5 m x 0.9 m
Usable Frequency Range: DC - 100 kHz
Inductance (Coil pair): 0.6 mH
Resonance Frequency (Pair of Coils): >400 kHz
Weight: 14 kg
Terminals: 4 mm female
Number of turns: 100
Maximum Coil Current: 20 A (5 min.)
Nominal Coil Current: 10 A continuous
Max. Magn. Field Strength: 2000 A/m (max. 5 min., dist. 0.84 m*)
Nominal Magn. Field Strength: 842 A/m continuos
Magn. Field Strength, 1 A Coil Current: 84.2 A/m (coil dist. 0.84 m*)
Maximum Coil Separation: 0.93 m*
Mechanical Dimensions: 1.69 m x 1.60 m x 1.00 m
Usable Frequency Range: DC - 6 kHz
Inductance (Coil pair): 112 mH
Resonance Frequency (Pair of Coils): >20 kHz
Weight: 53 kg
Terminals: 4 mm female
Number of turns: 10
Maximum Coil Current: 20 A (5 min.)
Nominal Coil Current: 10 A continuous
Max. Magn. Field Strength: 126 A/m (5 min.)
Nominal Magn. Field Strength: 63 A/m continuos
Magn. Field Strength, 1 A Coil Current: 6.26 A/m (coil Dist. 1.2 m)
Coil Separation acc. IEC 1000-4-8: 0.72 m
Maximum Coil Separation: 1.25 m
Coil Separation for best uniformity: 1.20 m
Mechanical Dimensions: 1.8 m x 1.8 m x 1.2 m
Usable Frequency Range: DC - 100 kHz
Resonance Frequency (Pair of Coils): >400 kHz
Weight: 17 kg
Terminals: 4 mm female
Number of turns: 100
Maximum Coil Current: 16 A (5 min.)
Nominal Coil Current: 8 A continuous
Max. Magn. Field Strength: 650 A/m @ coil Dist. =1.8 m
Nominal Magn. Field Strength: 325 A/m  @ coil Dist. = 1.8 m
Magn. Field Strength, 1 A Coil Current: 50.8 A/m (coil Dist. 1.13 m)
Maximum Coil Separation: >1.13 m
Coil Separation for best uniformity: 1.8 m
Mechanical Dimensions: W:2.0 m x H:3.10 m x B:3.18 m
Ground Clearence: 0.12 m
Usable Frequency Range: DC - 5 kHz
Resonance Frequency (per Coil): >10 kHz, typ. 13 kHz
Weight (per Coil): 190 kg
Recommended Accessories: NFCN 9731-100

 
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