PEM LFR Dual-Range AC Current Probe

The PEM AC Current Probes utilize a Rogowski Coil and Matched Analog Integrator to provide accurate non-contact, measurement of AC currents over a very broad frequency range. These flexible “clip-around” Current Probes have very low insertion impedance compared to Current Transformers, (CT), or Hall Current Transducers, are easy to insert in confined spaces and are not damaged by over-current surges. They can be used for measuring ac, pulse or transient current waveforms. Since the PEM Current Probes have no magnetic core they can be used to measure ac current on a conductor with high dc current or in the presence of a high dc magnetic field.

LFR Dual Range AC Current Probe

A dual range, clip-around, battery powered Rogowski probe for general purpose ac power measurements. The LFR has a 10:1 switch selectable current ratio to give a wide dynamic range in a single probe.

Features

  • Peak Current ratings from 30A to 300kA
  • Robust, flexible, clip-around coils
  • Integrator included with Rogowski Coil to provide an analog signal accurately proportional to primary current in amplitude and phase
  • High voltage isolation and common mode rejection
  • Measure ac current even in the presence of a high dc current
  • Not influenced by high dc magnetic fields
  • Bandwidth from 0.1Hz to 30MHz
  • No I*t limitation as with CT
  • Both battery (4xAA) and external DC power supply
  • CE marked
  • Special cryogenic versions
  • Special long coil versions

Applications

  • Monitoring current waveforms in semiconductor switches
  • Development, test and servicing of power electronic equipment.
  • Pulsed Power capacitor discharge and magnetic accelerator current measurements
  • Welding, motor drive, generator, currents
  • Ground currents in rotating machine shafts
  • Induction heating and plasma current measurements
  • Measuring AC currents in the presence of large DC currents
  • Fault monitoring, circuit breaker interruption and lightning strike currents
  • Monitor Battery and Capacitor Ripple Current

Pricing

LFR Dual Range AC Current Probe

Part No.DescriptionPriceIn Stock
LFR03/3 B/300

AC Current Probe, 100/10mV/A, 60A/600A, 0.45Hz/1MHz, Alkalai battery 4xAA, 300mm coil circumference length, 8.5mm cross section

$580.00
LFR06/6 B/300

AC Current Probe, 50/5mV/A, 120A/1.2kA, 0.23Hz/1MHz, Alkalai battery 4xAA, 300mm coil circumference length, 8.5mm cross section

$580.00
LFR1/15 B/300

AC Current Probe, 20/2mV/A, 300A/3kA, 0.15Hz/1MHz, Alkalai battery 4xAA, 300mm coil circumference length, 8.5mm cross section

$580.00
LFR1/15 B/500

AC Current Probe, 20/2mV/A, 300A/3kA, 0.15Hz/1MHz, Alkalai battery 1x9V, 500mm coil circumference length, 8.5mm cross section

$580.00
LFR3/30 B/500

AC Current Probe, 10/1mV/A, 600A/6kA, 0.10Hz/1MHz, Alkalai battery 4xAA, 500mm coil circumference length, 8.5mm cross section

$730.00
LFR6/60 B/500

AC Current Probe, 5/0.5mV/A, 1.2kA/12kA, 0.08Hz/1MHz, Alkalai battery 4xAA, 500mm coil circumference length, 8.5mm cross section

$730.00
LFR15/150 B/700

AC Current Probe, 2/0.2mV/A, 3kA/30kA, 0.07Hz/1MHz, Alkalai battery 4xAA, 700mm coil circumference length, 8.5mm cross section

$770.00
LFR30/300 B/1000

AC Current Probe, 1/0.1mV/A, 6kA/60kA, 0.07Hz/1Mhz, Alkalai battery 4xAA, 1000mm coil circumference length, 8.5mm cross section

$770.00

LFR Accessories

Part No.DescriptionPriceIn Stock
US21U

Power Supply, 120VAC, 12VDC, 300mA with a 2.1/2.5mm socket. Power disconnects battery when plugged into the integrator.

$40.00
Quantity Price
1 - 9 $40.00
10+ $38.00
PowerCableYK21

Yokogawa compatible power cord, 0.5m, supports all PEM units fitted with a 2.1mm DC power socket.

$60.00
Quantity Price
1 - 9 $60.00
10+ $57.00
BNC-BP

 0.5m BNC to banana plug output cable

$30.00

Product Configurator:

Select product options from drop-down menus to quote standard products not normally in stock. For fully custom products, fill in the message box below.

Order Code for LFR: Type Battery / Coil Circumference
For example: LFR03/3 B/700

For descriptions of the possible selections, please see the Specifications above.

Terms and Conditions

Quantity Discount Schedule:

Quantity 1 – 9 10 – 24
Discount 0% 5%

Terms and Conditions:

Prices above are for domestic deliveries to Canada, USA and Mexico only.
Prices are expressed in U.S. Dollars, FCA San Carlos, California.
Prices are subject to change without notice.
Higher quantity and OEM discounts are available.

Payment:

Visa, MasterCard, Amex, Prepayment before shipment, or Net 30 days (subject to credit
acceptance).

Delivery:

Items in stock shipped next business day. All other items up to 6 weeks.