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Pearson Current Monitors

ANAB Logo

Pearson Electronics Logo

Made in the USA 

Since 1955, Pearson Electronics has been manufacturing current transformer products. Our website is designed to simplify the selection of the right current probe to fit your application. Our current sensors feature pulse-current monitoring down to less than 1ns, making these high frequency current transformers ideal for a world of applications

Wideband Current Monitors

wide band current transformers

Data

Selection Guide

Whether you are interested in observing and measuring submilliamp currents in a charged particle beam or thousands of amps resulting from a fault in a major power feeder, you will find a Pearson current monitor to suit your needs.

The use of our patented distributed termination technique permits pulse-current monitoring of rise times as short as two nanoseconds. Our current sensor devices of larger inner diameter make possible high voltage current measurement without the risk of voltage breakdown.

Several of our current transformer models feature double shielding for greater noise immunity and increased safety in high voltage applications. All models are sealed and are suitable for use in high voltage insulating oil or under vacuum.

They can be connected to oscilloscopes, spectrum analyzers, power analyzers, digital voltmeters, analog-to-digital convertors, and a variety of other measuring instruments.


Model

Shape

Output
V/A

Hole ID
in.

Time Domain Parameters

Frequency Domain Parameters

Max.
Peak
Curr.

amps

Droop
%/ms

Rise
Time

 nsec.

IT Max.

(amp-s)

Max.
RMS
Curr.
(amp)

3dB pt.
Low

(Hz)

3dB
pt.High

(MHz)

I/f
(peak
amps
/Hz)

2877

F

1.0

0.25

100

200

2

0.0004**

2.5

300

200

0.0025

4100

E

1.0

0.5

500

90

10

0.002**

5

140

35

0.006

2100

D

1.0

2.0

500

80

20

0.005**

7.5

125

20

0.017

6585

K

1.0

2.0

500

300

1.5

0.002**

10

400

250

0.008

6656

J

1.0

3.5

500

140

3.5

0.01**

10

200

120

0.04

3100*

C

1.0

3.5

500

40

50

0.03**

12

40

7

0.1

150

D

0.5

2.0

1k

20

20

0.02**

15

40

20

0.07

6595

K

0.5

2.0

1k

100

2.5

0.008**

20

100

200

0.03

325*

C

0.25

3.5

2k

100

30

0.09

60

160

10

0.6

2878

F

0.1

0.25

400

20

5

0.004**

10

30

70

0.025

410

E

0.1

0.5

5k

60

20

0.25

50

120

20

1.7

411

E

0.1

0.5

5k

0.9

20

0.2**

50

1

20

0.6

3972

I

0.1

1.0

5k

1

20

0.2

50

1

20

0.6

110

D

0.1

2.0

5k

0.8

20

0.5**

65

1

20

1.5

110A†

D

0.1

2.0

10k

0.8

20

0.5**

65

1

20

1.5

6600

K

0.1

2.0

2k

15

5

0.04**

40

25

120

0.12

310*

C

0.1

3.5

5k

20

40

0.6

140

40

10

3.6

1010*

A

0.1

10.75

5k

250

50

0.7**

120

400

7

4.4

1025

D

0.025

2.0

20k

100

100

0.5

100

160

4

3.0

3025*

C

0.025

3.5

20k

4

100

3.0

325

7

4

20.0

2879

F

0.01

0.25

2k

2

20

0.04**

25

3

20

0.25

5046

E

0.01

0.5

25k

0.3

20

0.5**

100

0.5

20

3.0

101

D

0.01

2.0

50k

0.1

100

2.5**

200

0.25

4

12.0

4997

D

0.01

2.0

20k

0.3

25

1.0**

150

0.5

15

3.5

301X*

C

0.01

3.5

50k

3

200

22.0

400

5

2

140.0

1080*†

C

0.005

3.5

200k

2.0

250

25

750

3.0

1.5

150

1330*

C

0.005

3.5

100k

1.0

250

65

1400

0.9

1.5

400

4418

D

0.001

2.0

200k

0.05

200

6.0**

400

0.7

2

40

1423*

C

0.001

3.5

500k

0.7

500

75

2500

1.0

1.2

450

2093*

B

0.001

4.75

500k

0.09

2000

1200

2500

0.15

0.2

7500


Current Monitor Sizes
Pearson Current Monitor small sizes

Accuracy +1%, -0% of initial pulse amplitude for all models, with a high impedance load such as 1 megohm in parallel with 20 pF. A 50 ohm termination will reduce the output to half.

     *     are double shielded and are recommended for high voltage or high noise environments. The entries labeled
     **   may need a small dc bias current through the secondary for maximum current-time rating.
     †    Type N Connector


Pearson Clamp On Current Monitors

Pearson Clamp On Current Monitor

Data

Selection Guide

Accuracy ±1% or better, initial pulse response for all models, with a high impedance load such as 1 megOhm in parallel with 20 pF.

A 50 Ohm termination will reduce the output to half. All models listed below come with a BNC connector except as noted and are to be used with a 50 Ohm coaxial cable.

The current monitor case is conductive and not insulated. Adequate insulation must be provided on the conductor being monitored.

To avoid electrical shock, do not mount or remove the current monitor from a live conductor.





Model

 


Shape



Output
V/A




Hole Id.
(in.)

Time Domain Parameters

Frequency Domain Parameters


Peak
Curr.

(Amps)



Droop
(%/”s)

Useable
Rise
Time

(nsec.)



IT Max.
(Amp-sec.)

Max.
RMS
Curr.

(Amps)

3dB
pt.
Low

(Hz)

3dB
pt.
High

(MHz)

I/f
(RMS
Amps
/Hz)

I2t max
(AČs)

8585C

N

1.0

0.5

500

1.0

2

0.003

5

1.5k

200

0.01

5

4100C

N

1.0

0.5

500

1.0

15

0.0015

5

1.5k

25

0.008

150

8590C

M

1.0

1.0

500

0.7

2.5

0.002

5

1k

150

0.01

25

7790

M

1.0

1.0

500

1.0

15

0.002

5

1.5k

25

0.01

150

4688

L

1.0

2.0

500

0.4

12

0.005

15

600

30

0.03

150

8705C†

-

1.0

2.0

15

4.0

1

.0006

4

1.5k

400

.002

.02

7805

K

1.0

4.0

500

0.7

25

0.004

15

1k

25

0.02

150

7760

J

1.0

6.0

500

0.5

50

0.005

20

750

7.0

0.03

350

5101

L

0.5

2.0

1k

0.1

20

0.02

25

150

18

0.08

700

5949†

K

0.5

4.0

1k

0.1

30

0.02

30

150

12

0.08

700

411C

N

0.1

0.5

5k

0.015

20

0.15

50

25

20

0.7

18k

7795

M

0.1

1.0

5k

0.015

25

0.15

60

25

15

0.8

18k

3525

L

0.1

2.0

5k

0.004

25

0.5

100

6.0

15

2.5

18k

7810

K

0.1

4.0

5k

0.007

50

0.4

150

10

7.0

2.0

18k

7655

J

0.1

6.0

5k

0.007

100

0.4

175

10

4.0

2.0

35k

5008C

N

0.01

0.5

50k

0.005

150

1.0

150

7.5

3.0

4.2

250k

7800

M

0.01

1.0

50k

0.003

175

0.8

125

5.0

2.0

4.0

140k

4160

L

0.01

2.0

50k

0.001

200

2.5

300

1.5

2.0

15.0

1M

7815

K

0.01

4.0

50k

0.001

200

3.0

400

1.5

2.0

15.0

2M

7450

J

0.01

6.0

50k

0.001

250

3.0

400

1.5

1.5

12

2M

5664

L

0.001

2.0

200k

.00025

250

8.0

500

0.4

1.5

50

1M


Pearson Clamp On Current Clamp Sizes

Accuracy ±1%, initial pulse response for all models unless otherwise stated, with a high impedance load such as 1 megOhm in parallel with 20 pF. A 50 Ohm termination will reduce the output to half.  

>Droop:   For a flat top current pulse, the output voltage decays toward zero. Initially, the decay appears linear and the slope is referred to as the droop rate. 

Usable Rise Time: If the 10 to 90% rise time is greater than the specified usable rise time, initial overshoot will be less than 10% of the pulse amplitude.

† =  Type N Connector  


Pearson Custom Current Monitors

Pearson Custom Current Clamps

Data

Selection Guide

Accuracy ±1% or better, initial pulse response for all models, with a high impedance load such as 1 megOhm in parallel with 20 pF.

A 50 Ohm termination will reduce the output to half. All models listed below come with a BNC connector except as noted and are to be used with a 50 Ohm coaxial cable.

The current monitor case is conductive and not insulated. Adequate insulation must be provided on the conductor being monitored.

To avoid electrical shock, do not mount or remove the current monitor from a live conductor.

STANDARD MODELS





Model



Output
(Volts/
Amp)




Hole Id.
(inches)

Time Domain Parameters

Frequency Domain Parameters


Peak
Curr.

(Amps)



Droop
(%/ms)


Rise
Time

(nsec.)



IT Max.
(Amp-s)

Max.
RMS
Curr.

(Amps)

3dB
pt.
Low

(Hz)

3dB
pt.
High

(MHz)

I/f
(peak
Amps
/Hz)

10

2.0

50

700

150

0.0005

4

1,000

3

0.004

10

2.0

50

300

350

0.001

4

500

1

0.006

10

2.0

10

35k

3

0.00005

1

45k

125

.00007

1

5.0

500

40

15

0.04

5

30

20

3.5

1

10.75

500

500

40

0.006

35

750

9

0.003

1

1.0

500

80

15

0.002

5

125

20

0.014

1

2.0

500

4

400

0.1

40

6

1

0.6

1

Coaxial

100

200

2

0.0004

2.5

300

200

.0025

1

3.5

500

3

350

0.25

75

4

1

1.5

0.1

2.0

5k

50

20

0.5

75

30

20

3.5

0.1

2.0

5k

12

20

0.6

75

20

20

3.5

0.1

4.0

5k

1.5

40

0.5

140

2

10

3

0.1

5.0

5k

90

40

1

150

120

10

7.5

0.1

15.0

1k

50

80

1.5

250

100

4

10

0.1

10.75

5k

1.5

50

0.4

300

2

7

5.7

0.1

0.25

400

20

5

0.004

10

30

70

0.025

0.1

2.0

5k

100

9

0.15

100

150

40

1.1

0.1

0.25

400

7

20

0.004

10

10

20

0.025

0.05

10.75

10k

0.5

75

3

600

1

5

21.2

0.02

0.5

1k

1

500

6

150

1.5

0.7

40

0.01

1.0

25k

0.3

25

0.6

120

0.5

15

4

0.01

4.0

50k

4

60

5

400

6

7

35

0.01

2.0

50k

3

100

4.5

200

5

4

25

0.01

10.75

50k

4

200

12

1,000

7

2

80

0.01

2.0

20k

9

25

2

150

12

20

12

0.01

2.0

4k

2

5

0.2

100

5

70

1.2

0.01

0.5

50k

6

150

2

150

10

3

12

0.01

3.5

50k

0.02

200

30

750

0.03

2

225

0.005

4.0

100k

2

350

20

1,500

3

1

120

0.001

3.5

500k

0.1

300

480

2,800

1

1.2

3,060

0.001

2.0

200k

1

200

15

400

1.5

2

90

0.001

12 x 2

100k

0.3

500

150

1,200

0.5

0.7

1,000

0.001

14.5

500k

1.5

300

40

3,000

3

2

250

0.001

10.75

500k

1

400

50

2,000

2

1.5

300

0.0005

4.75

1,000k

0.2

2,000

750

3,500

0.15

0.2

3,500

CLAMP-ON MODELS





Model



Output
(Volts/
Amp)




Hole Id.
(inches)

Time Domain Parameters

Frequency Domain Parameters


Peak
Curr.

(Amps)



Droop
(%/ms)


Rise
Time

(nsec.)



IT Max.
(Amp-s)

Max.
RMS
Curr.

(Amps)

3dB
pt.
Low

(Hz)

3dB
pt.
High

(MHz)

I/f
(peak
Amps
/Hz)

2

2.0

500

n/a

12

n/a

n/a

100k

30

n/a

1

2.0

500

10

600

0.15

50

15

0.5

1.1

1

2.0

500

7k

4

0.001

10

11k

100

0.007

1

9.0

500

750

75

0.007

25

1,250

5

0.04

0.1

10.75

5k

250

50

0.7

120

400

7

4.4

0.1

2.0

5k

1,040

25

0.5

100

2k

20

3

0.01

2.0

1k

100

7

0.3

100

200

50

2.1

0.01

3.5

50k

3

200

400

100

5

2

140

0.05

3.5

10k

8

100

4

250

12

3.5

25

0.005

3.5

100k

1.5

25

50

320

1.5

2.5

320

0.001

6.0

500k

0.3

400

15

1k

0.4

1

105

DOUBLE SHIELDED MODELS





Model



Output
(Volts/
Amp)




Hole Id.
(inches)

Time Domain Parameters

Frequency Domain Parameters


Peak
Curr.

(Amps)



Droop
(%/ms)


Rise
Time

(nsec.)



IT Max.
(Amp-s)

Max.
RMS
Curr.

(Amps)

3dB
pt.
Low

(Hz)

3dB
pt.
High

(MHz)

I/f
(peak
Amps
/Hz)

1

0.5

500

0.09

10

0.002

5

140

35

0.006

1

1.75

500

0.08

20

0.005

7.5

125

20

0.017

0.1

1.75

5k

0.8

20

0.5

100

1

20

1.7

0.1

0.5

5k

0.9

20

0.2

50

1

20

0.6

0.01

1.75

20k

0.3

20

1

150

0.5

20

3.5

0.01

0.5

50k

6

150

2

150

10

3

12

0.025

1.75

20k

100

100

0.5

100

160

4

3

THIN MODELS





Model



Output
(Volts/
Amp)




Hole Id.
(inches)

Time Domain Parameters

Frequency Domain Parameters


Peak
Curr.

(Amps)



Droop
(%/ms)


Rise
Time

(nsec.)



IT Max.
(Amp-s)

Max.
RMS
Curr.

(Amps)

3dB
pt.
Low

(Hz)

3dB
pt.
High

(MHz)

I/f
(peak
Amps
/Hz)

7713-03

1

0.22

100

600

1.5

0.0002

2

1000

250

0.0014

8105-03

0.1

0.22

300

50

10

0.002

6

50

40

0.013

5974

0.1

0.5

5k

1

20

0.15

50

2

20

0.6

8500

0.1

2.0

5k

4

20

0.1

75

10

20

0.6

8445

0.1

2.0

5k

4

20

0.1

75

10

20

0.6

8568

0.01

0.5

25k

0.4

25

0.4

100

0.8

15

2.5

8532

0.01

1.0

10k

0.5

25

0.5

100

0.7

15

3

7765

0.01

2.0

20k

1

25

0.25

150

1

20

1

6535-03

0.005

0.22

5k

1.5

20

0.04

30

2.5

20

0.25

Accuracy ±1%, initial pulse response for all models unless otherwise stated, with a high impedance load such as 1 megOhm in parallel with 20 pF. A 50 Ohm termination will reduce the output to half.

Droop: For a flat top current pulse, the output voltage decays toward zero. Initially, the decay appears linear and the slope is referred to as the droop rate.

Usable Rise Time: If the 10 to 90% rise time is greater than the specified usable rise time, initial overshoot will be less than 10% of the pulse amplitude.

†= Type N Connector


Pearson Coaxial Current Monitor

Pearson Electronics introduces a new wide band current monitor that allows you to easily measure current within a coaxial cable system. The current monitor can be inserted within a coaxial cable run by means of two BNC connectors.

Pearson 6027 Coaxial Current Monitor

The Model 6027 has a 3dB bandwidth from 300 Hz to 200 MHz and an rms current rating of 2.5 Amperes. 

Accuracy of 1%, or better, is obtainable across the mid-band.  

Pulse currents up to 100 Amperes peak and rise times as short as 2 nanoseconds can be viewed faithfully.

Other coaxial designs include ones with HN and triax connectors as well as ones that are double shielded.


Data


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