Hioki LR8400-20 Data Sheet

MEMORY HiLOGGER

LR8400,LR8401,LR8402

Data Loggers

Portable Data Logger with 30 Standard Channels

Expandible to 60 Channels

Only the size of an A4 sheet of paper, the HIOKI LR8400-20 Series is the real­ization of our goal to build a logger that provides the existing functionality of a
multi-channel data logger in a portable format. The new model comes with 30
channel capability as standard, to which another 30 channels can be added. All
input channels for measuring temperature (with thermocouples), or voltage are
isolated for safety, culminating in a powerful multi-measurement system that also
offers pulse and logic inputs. Long-term logging is coupled with the capability to
protect data against unexpected power outages and other problems for stable re­cordings over an entire year (see note).

Note: Continuou s recordings lasting longer than 1 year are also possible.

2

In fuel cell, electric automobile and

other development

Provides

assistance

with

n Environmental measurements to

prevent global warming

n Development of fuel cell

materials, energy field

n Development of automobiles,

testing of automobile parts

n Maintenance and inspection of

equipment

n Monitoring plants
n Testing of electrical products
n Impedance testing of electronic

parts

n Multi-channel measurements

In the development of fuel cells, multiple power-generating cells
are connected to form a stack. Independent measurements of
each cell require multi-channel measurements of DC voltage, DC
current, temperature and other parameters.
The LR8400-20 Series comes with 30 channels as standard, which
can be expanded to 60 channels.

n High withstand voltage

The HiLOGGER measures not only fuel cells, but also batteries for
UPS (uninterruptible power supplies) devices used in buildings as
well as batteries consisting of cells and packaging connected in
stacks that require multi-point measurements.
In such measurements, high voltage for the whole stack is
applied between channel-to-channel and channel-to-ground. Only
a measuring instrument with isolated inputs and high-capacity
withstand voltage characteristics can endure this.

Note: Isolation bet ween channels is possible th rough the use of semi-conductor

relays. Voltage exceeding the product specications, such as that originating from
lightning su rges or other sources, should never be applied between each channel;

otherwise the relays will short a nd the recorder will be damaged.

n Maximum rated

voltage to earth:
300 V AC/DC

n Maximum voltage that can be input

between terminals: ±100 V DC

n Maximum rated

voltage between
each channels of
UNIVERSAL UNIT:
300 V DC

n Maximum rated

voltage between
each channels of
VO LTAGE /T EMP
UNIT: 250 V DC

n High-speed sampling

In the development of automobiles such as electric vehicles (EV)
and plug-in hybrid vehicles (PHV) that use motors for propulsion,
abrupt changes in load need to be measured.
This makes the multi-channel, high-speed 10 ms sampling
capability of the LR8400-20 Series an indispensable feature.

Highlights

Multi­measurements

3

Measure and record:

 nTemperature & humidity
 nA variety of transducer outputs (DC voltage)
 nResistance values

Also comes with high withstand voltage; isolated inputs required when measuring and recording

battery cell voltages

Voltage measurement (DC only)

•30 input channels

Note: The L R8400-20, LR8401-20 and LR8402-20 m odels

differ i n the combination of input func tions a nd ter minals .

•All input channels are isolated

Note: Maximum rated voltage above g round b etwe en the

HiLOGGER a nd analog input s is 300 V AC/DC.

Note: Maximum channel-to-

channel voltage is a high
voltage of 300 V DC.

(Maxim um voltage for

models with M3 screw inpu t
termi nals is 250 V DC .)

Temperature & humidity measurement

• Temperature measurements of thermocouples on 30

channels

• M3 screw terminal inputs enable secure connection

of even thin thermocouples

• Special sensor permits humidity measurements on

30 channels

Note: The s ensor po wer supply is the M3 m m dia. screw ter minal block on th e left sid e.
Note: Both u nivers al input t ermin als and M3 mm d ia. input ter minals e nable hu midity

measurements.

(optional Z2000)

To record 4 - 20mA instr umentation
signals, attach a commercially

available 250Ω shunt resistance

to the input terminals (between + and -)
to convert the signals to 1 - 5 V. Then
use the 1-5V or the 10V f.s. input range in
the HiLOGGER.

Temperature & resistance measurement

•Universal inputs support temperature

measurements using Platinum resistance
temperature sensor
measurements

Note: The se cann ot be mea sured u sing the M3 s crew in put ter minal s

units.

Note: Sup ports resist ance recording to enabl e asses sment of

change s in resistance in the dev ice und er test . 4-te rminal method ,

measu remen t resolu tion 0.5 mΩ -, test ing current 1 m A

(P t10 0/ JPt10 0)

(four wire s)

, or resistance

nA compact A4 size enhances mobility

A compact A4 size footprint makes it ideal
for use in virtually any environment.

nHelps also in collecting automotive data

Ideal for testing and collecting data
on the vibration characteristics of
automotive parts

Pulse totalization measurement Logical 1-0 measurementPulse rotations measurement

• 8 channel inputs

each channel)

• For measuring energy consumption and cumulative

flow

The input signal shares common

•

ground with the HiLOGGER

Note: M3 scre w input terminals

provide direct connection

(pulse and digital input select able for

• 8 channel inputs

each channel)

(pulse and digital input select able for

• For measuring rotational irregularities of motors

and drills

The input signal shares common

•

ground with the HiLOGGER

Note: M3 scre w input terminals

provide simple connection

• 8 channel inputs

each channel)

(digital and pulse input selectable for

• 1 or 0 is recorded for each

recording interval

•

The input signal shares common
ground with the HiLOGGER

Note: M3 scre w input terminals

provide simple connection

4

Accurately capture any phenomena

you want to measure

Highlights

High-speed
Recording

Sampling at 100 ms intervals cannot
capture abrupt load changes

Highlights

Noise
suppression

Sampling the same waveform at ten
times the speed, at 10 ms intervals,
accurately captures the changes.

n10 ms high-speed sampling

The development of hybrid and electric
automobiles requires instruments that can
measure abrupt load changes. Channels 1 to
15 provide 10-ms sampling and channels 16
to 30 provide 20-ms sampling. This channels
allow you to track waveforms not possible
with earlier models.

Note: Measurements on channels 31 to 60 provide 50-ms
sampling.

nEnhanced noise suppression

A digital oversampling lter function reduces

inverter switching noise and 50/60 Hz hum
noise, a concern in earlier models, during
recording.

Note: The noise reduction effect improves with longer
recording inter vals (i.e., at slower sampling speeds).

Without electric noise reduction, you
will obtain a waveform like the one
above in temperature measurements of
an electromagnetic cooker

Highlights

Easy-to­view LCD

A digital filter in the HiLOGGER
eliminates high-frequency noise to
enable accurate temperature waveforms

n5.7 inch TFT LCD display is easy to view even at an angle

The LCD has a wider visual angle and is larger (5.7 inches, 640 × 480 dots)

than the STN LCD in our
previous model (8420-51s)
to facilitate observation
of waveforms on multiple
channels.