PS250 – Power Logger

A COMPLETE POWER DATA LOGGER SOLUTION from setup, to data gathering, to a comprehensive final report. See an example here: Report

Our popular PS250 Power Logger has four current and three voltage channels to directly measure all phases and neutral in single, two-phase, three-phase, split delta, 2PT/2CT, DC, 45-66 Hz, 360-440 Hz, just about any situation you will ever encounter.

$1,495 USD

Summary   |   Features   |   Specifications   |   Documents   |   Recommended Products

Measures 140 different parameters

Volts, amps, watts, power factor, frequency, THD (optional), etc. Minimums, maximums, averages, and present values. Individual phases and total. The PS250 records all parameters every second. Unlike other loggers, it never goes into “sleep” mode. This guarantees that you will have a true view of all of the data when the job is done.

SureStart™ for getting great results

Uses artificial intelligence to verify that the wiring, connections and setup parameters are correct to avoid the likelihood of a wasted survey. Information is available on the front panel display to alert you to connection errors. This unique program (patent pending) reduces the time to hook up voltage and current probes and makes sure that all your measurements are correct.

SureSense™ for accurate current

Uses automatic current probe identification to set the input of the PS250 to match each current probe in use. This makes sure that the current probe readings are correct.

SurePower™ for reliable logging

The meter’s operation is backed up by rechargeable batteries and has an option to power it directly from the voltage being monitored. Current probes that normally require batteries (flexible AC probes and DC probes) get their power from the PS250. This guarantees that the PS250 will log power as long as you need it to with no part failing you. It has the longest logging capacity in its class.

Clear display for spot checks — like a multimeter!

For instantaneous readings you can view voltage, current, true power, apparent power and true power factor present values and min. max summaries in the window without the use of a laptop – in real time like a multimeter.


Measures, logs, and reports:

  • RMS Volts
  • RMS Amps
  • Watts
  • Energy (kWh)
  • VA , VAR , Power Factor, Hz
  • Live / scope waveform views
  • Real time meters
  • Phasors
  • Harmonic Spectrum (HAO option)
  • THD (HAO option)


General Specs

Category Notes
Size 3.88″ (9.86 cm) W x 7.72″ (19.61 cm) L x 1.58″ (4.01 cm) Deep at bottom end; 2.14″ (5.44 cm) Deep at top end
Weight 1.1 lbs (0.5 kg)
Operating Range 32 – 122 degrees F (0 – 50 degrees C) Relative humidity to 70% (non-condensing)
Power Requirement 12V DC @ 500 mA
Battery Life 8-10 hours after 4 hour charge
Battery Type Li – Ion
Measurement Rate 8 microseconds for Voltage and Current
Safety 600V/8000V CAT IV
SD Card Slot Accepts SD Cards to 2GB
Logging Period (Resolution) 1 Second – 99 Minutes
Logging Duration (Length of session) up to 2 years according to memory allocation
Internal Data Retention 8 years
Other Features Crest Factor, K Factor, Peak Demand Period, Peak Demand of Peak, Demand Period. (PS3500 Only) Duty Cycle, On/Off Cycle %, Avg. On Time, Avg Off Time

Voltage Measurement

Category Notes
Display Range 1-6 MV (using input ratios)
Meter Display Range 1V (PS2500); 0.1V (PS3500)
Accuracy 0.5% of reading ±0.3 Vrms

Current Measurement

Category Notes
Display Range 1 mA – 6 mA (using input ratios)
Meter Display Range 1A (PS2500); 0.1A (PS3500)
Accuracy ±0.1 % of reading plus accuracy of probes
Phasor Diagram via PC
Imbalance via PC
Warranty Icon

WARL Warranty

eFX6000 probe

eFX6000 Flex Current Probes

CAS3 carrying case front

CAS3 Carrying Case

LDCm top view

LDCm Line-to-DC Converter Mini

Bluetooth Adapter small

BTA Bluetooth Adapter

Other Relevant Items

All Voltage Probes

All Voltage Probes

CASP Half Open small

Other Carry Cases

Current Probes

All Current Probes

120ADP top small

120ADP 120V Test Adapter

LDC4 and SCAS3 small

All Accessories