Easily Record Load Current of 50Hz/60Hz Lines and Leak Current
Hioki compact 1 or 2-channel data loggers feature a 60,000 data
set/channel memory to measure temperature, humidity, voltage
or instrumentation signals. The LR5051 logs current over 2
channels in as fast as 1 second intervals.

Model No. (Order Code)

LR50512ch, clamp sensor is sold separately


Key Features

• Easily mount the light-weight , pocket-sized loggers in tight spaces
• Easy-to-see dual display
• Transfer data to PC even during recording
• Replace batteries while recording (30 second limit)
• 3 times the memory capacity compared to predecessor (Record 60,000 data per channel)
• Record without missing fluctuations in STAT mode
• Measurement data is preserved even after the battery dies
• Worry-free backup preserves recorded data even if a new measurement is started by mistake

Note: The Clamp Logger LR5051 may be affected by
high-frequency noise while measuring leak current.
Please contact Hioki for more information if you
plan to use the instrument in an environment
where it would be subject to the effects of
high-frequency noise.

Customers using the previous Model 3636-20 Clamp
Logger should note that the LR5051 can only record
15,000 points of average data, vs. 32,000 data
points available in the 3636-20.

Note: Communication Adapter LR5091 or Data
Collector LR5092-20 is necessary to collect data
from the LR5000 series Logger and transfer data
to a PC.

Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)

Measurement itemsAC Current 2 channels (used with the optional current sensor; load current 2ch, leak current 2ch, or load/leak each 1ch) Caution: Current and leak current that occur intermittently cannot be measured.
Measurement range500.0 mA to 1000 A AC rms, 5 range (depends on current sensor in use)
Basic accuracy±2.0% rdg. ±0.13% f.s. (main unit + current sensor accuracy, at 500.0 A range, 50/60 Hz) Note: Basic accuracy is typical value, only main unit accuracy: ±0.5 %rdg. ±5 dgt., must added clamp sensor accuracy, refer to the detailed catalog
Storage capacityInstantaneous value mode: 60,000 data/ch, Statistical value mode: 15,000 data/ch
Recording interval1 to 30 sec., 1 to 60 min., 15 selections
Recording modesInstantaneous recording: at every recording interval Statistical value recording: Measure at one second intervals, and record the instantaneous, maximum, minimum, and average values within every recording interval
Recording methodsOne-time recording: Stop recording when the memory capacity is full Endless recording: Continue recording even when the memory capacity is full (old data is overwritten) Start: Logger button operation or scheduled time Stop: Logger button operation or scheduled time, or auto-stop when the memory capacity is full (at one-time recording)
Other functionsAlways backs up last recorded data; backs up recorded data and setting conditions when battery power is low; guarantees approx. 30 sec. of recording operation and clock while battery is replaced
Waterproof and dust-proofN/A
InterfacesInfrared optical communications with LR5091, LR5092-20
Power supplyLR6 (AA) Alkaline battery ×2, Battery life: Approx. 1 year (Instantaneous recording, with 1-minute interval and auto power saving, at 20 °C), Approx. 1 month (Instantaneous recording, with 1-second interval at 20 °C)
Dimensions and mass79 mm (3.11 in) W × 70 mm (2.76 in) H × 37 mm (1.46 in) D, 165 g (5.8 oz)
AccessoriesLR6 (AA) Alkaline battery (built-in internal) × 2, Instruction manual × 1, Operation guide × 1
Catalog: DATA LOGGER LR5000 SeriesDownload PDF  [6MB]English
Catalog: DATA LOGGER Selection Guide LR8431, LR8400 series, 8423, LR5000 seriesDownload PDF  [5MB]English

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