ASM-SENSOR 3550

3550 series BATTERY HiTESTER
Component Measuring Instruments
Model 3551 for high-capacity batteries completes line-up
Model 3550 for medium-capacity alkali and lead-acid storage batteries: UPS and similar applications
Model 3551 for high-capacity alkali and lead-acid storage batteries
Model 3555 for compact storage batteries: portable telephones and similar applications
Instantaneous Check on Battery Deterioration
[NOTE]
* The comparison threshold values depend on
the battery manufacturer, type, and capacity,
and these must be established by the user.
In today's multimedia age, the maintenance of storage batteries used
in information technology devices is taking on increased
importance.
The 3550 series of BATTERY HiTESTERS can give
instantaneous results on the state of a battery, on a three-rank scale
of Pass, Warning, or Fail, using a composite decision based on the
internal resistance and the voltage.
Choose from 3 models to suit your application: Model 3550 for
testing medium-capacity alkali and lead-acid storage batteries,
Model 3555 for compact storage batteries, and Model 3551 to
reliably measure high-capacity alkali and lead-acid storage batteries.
1
3550, 3551 BATTERY HiTESTER
Conveniently check the battery in an Uninterruptible
Power Supply (UPS) without shutting down
With repeated charging and discharging of a
storage battery over a long interval, the battery
performance gradually deteriorates, and the
internal resistance increases until charging is no
longer possible. Faults may also be caused by
internal short-circuits, reducing the battery
voltage, making the battery over-heat, or in the
case of a short-circuit caused by corrosion,
possibly even leading to a fire.
The 3550/3551 BATTERY HiTESTER takes onthe-spot measurements of the internal resistance
and voltage of alkali and lead-acid batteries,
principally for UPS and similar applications. It then
determines the state of the battery immediately,
without needing to shut off the battery.
Model 3551:
support for highcapacity batteries*
3550 BATTERY HiTESTER
Generally speaking, the higher the capacity of a battery, the lower the internal resistance, and in the case
of high-capacity batteries the check decision requires accurate measurement of an extremely small internal
resistance of a few tens or hundreds of microohms. The 3551 has a resolution of 1µΩ, an order of
magnitude finer than the 3550, and with the special-purpose 9465 PIN TYPE LEADS, provides decisions
for high-capacity batteries.
*The term "high-capacity battery" is used here to mean one with a capacity of at least 500 Ah, and
internal resistance not exceeding 0.5µΩ.
The operational life of a battery varies greatly, depending on the pattern of use (frequency of power
Simultaneous
failures, continuous operating time, and so forth) and also on the environmental conditions. It is therefore
necessary to measure the internal resistance and voltage of the battery, and also the temperature of the
measurement of
battery or of the environment, in order to assess the state of the battery.
resistance, voltage, * Temperature measurement with the 3551 requires the optional 9460 CLIP TYPE LEADS WITH
TEMPERATURE SENSOR.
and temperature*
Three-rank rating of
battery state: Pass,
Warning, or Fail
The Pass/Warning/Fail assessment of a battery's state is based on a six-way combination of comparisons*
against upper and lower resistance limits and a voltage threshold. This result is then indicated by LEDs
and a beeper.
▼ Upper resistance limit
Lower resistance limit ▼
Voltage
* The comparison threshold values
depend on the battery manufacturer,
type, and capacity, and these must be
established by the user.
Voltage
threshold value
▼
[NOTE]
Resistance
Low
In range
High
Low
Warning (amber)
Warning (amber)
Fail (red)
High
Pass (green)
Warning (amber)
Fail (red)
The LED indicator colors are shown in parentheses.
Safely measure
without shutting
down the battery
For a UPS in a hospital or computing facility, where a break in the supply cannot be tolerated, battery
maintenance must be carried out with the battery live. Models 3550 and 3551 are designed to be able to
take measurements even while the battery is being charged.
* The tester includes circuitry to attenuate noise at frequencies other than the measurement frequency
(1 kHz). If, however, noise is present at close to the measurement frequency, a stable reading may not
be obtained.
Memory function
and printed output
A UPS consists of a number of cells connected either in series or parallel, and data for each of these cells
must be obtained rapidly, and recorded. The BATTERY HiTESTERs have a built-in internal memory
function which retains the measurement values and the decision result: Model 3550 holds 260 sets of
data, and Model 3551 holds 250 sets. These can be recalled on the tester itself, or can be printed together
with statistics, using the optional 9203 DIGITAL PRINTER.
2
3550, 3551 BATTERY HiTESTER
3551 BATTERY HiTESTER
The increasing importance of battery testing
With the advancing information age, UPS applications will become important over a
wide range of locations, from office buildings to hospitals and research institutions.
Accordingly, battery maintenance is a field that can be expected to grow in
importance. Also, in the development of practical electrically powered vehicles, the
environment for lead-acid storage batteries is changing rapidly, and these changes
indicate a great opportunity for Models 3550 and 3551 BATTERY HiTESTERS.
What about conventional maintenance methods?
The operational life of a battery depends on the frequency of use (number of
charge/discharge cycles). The graph on the right illustrates the relationship between
the time required for charging the battery and the charge capacity and internal
resistance, and shows that as the charging time increases, the charge capacity
decreases, while the internal resistance rises.
There are various methods for determining whether a battery has reached the end of
its operational life, but the method based on measuring the internal resistance and
voltage is fast and reliable.
Discharge capacity
Internal resistance
Charging time
Discharge capacity
Relationship between charging time and charge
capacity or internal resistance
Internal resistance
The traditional technique for checking the state of a backup battery is based on a
measurement of the specific gravity of the electrolyte. But as sealed batteries have
become the norm, this is no longer possible. The 3550 and 3551 take measurements
from the battery terminals, and can therefore function with completely sealed
batteries.
3
3555 BATTERY HiTESTER
On-the-spot testing of compact storage batteries
used in mobile phones and similar handheld devices
With improvements in battery technology, the
range of applications in portable devices is
growing rapidly: not only mobile phones, but
also video cameras, laptop computers, and other
electronic devices. But the performance of these
devices depends on the lifetime and performance
of the batteries. Because of the wide variation in
battery lifetime depending on the charging
frequency and pattern of use, battery maintenance
tools are indispensable.
The 3555 BATTERY HiTESTER provides a simple,
on-the-spot assessment of the state of compact storage
batteries, including nicad (Ni-Cd) and nickel metal
hydride (Ni-MH) batteries.
3555 BATTERY HiTESTER
Simultaneously
measure
resistance and
voltage
Model 3555 uses the same AC four-terminal method* as that used on Models 3550 and 3551
for testing lead-acid batteries to measure the internal resistance, and simultaneously measures
the battery voltage, to give an immediate Pass/Warning/Fail result.
Three-rank rating of
battery state: Pass,
Warning, or Fail
The Pass/Warning/Fail assessment of a battery's state is based on a six-way combination of
comparisons against upper and lower resistance limits and a voltage threshold.* This result is
then indicated by LEDs and a beeper.
Simple operation
Once the appropriate comparison values for the battery being tested have been entered or
recalled from memory, measurement is as simple as touching the pin-type probes to the battery
terminals. Since the tester is battery-operated, it can also be used anywhere.
* The AC four-terminal method supplies an AC current from the source terminals to the battery being
tested and measures the voltage drop with the sense terminals. This cancels out the contact resistance and
lead resistance, and provides accurate measurement of low resistances. See also the enlarged illustration
of the tip of the 9461 Pin-Type Leads.
* The comparison threshold values depend on the battery manufacturer, type, and capacity, and these must
be established by the user.
Battery diagnosis
Once a compact storage battery, typically one used in a mobile phone, exceeds the
manufacturer's guaranteed limit on charge-discharge cycles, its charging capacity gradually
deteriorates, and the operating time on a single charge may become extremely short.
A simple test is therefore required to determine whether an apparently faulty device simply
has a failing battery. In cases such as these, the 3555 BATTERY HiTESTER gives exactly
the guidance needed to determine whether or not to replace the battery.
4
3550, 3551 BATTERY HiTESTER
Comparison of models in the 3550 series
3550
3551
3555
Maximum resolution
10 µΩ (30 mΩ/300 mΩ/3 Ω ranges)
1 µΩ (3 mΩ/30 mΩ/300 mΩ ranges)
100 µΩ (3 mΩ/30 mΩ/300 mΩ ranges)
Battery types tested
Medium-capacity alkali and lead-acid
High-capacity alkali and lead-acid
Compact storage batteries
9460 CLIP TYPE LEADS WITH
TEMPERATURE SENSOR
9465 PIN TYPE LEADS
Can be fitted with 9466 REMOTE CONTROL SWITCH
for memory capture without letting go of the leads.
9461 PIN TYPE LEADS
Test leads supplied as
standard
Moving average
function
Power supply
10 sets / 

For stabilizing fluctuating readings

Battery only
Battery or AC adapter
Battery only
* Lengths are approximate, and are cable lengths only, excluding the probes.
For 3550, 3551
For 3555
9460 CLIP TYPE LEADS WITH
TEMPERATURE SENSOR
9465 PIN TYPE LEADS and
9466 REMOTE CONTROL SWITCH
(Cable length: connector to fork 1.7
m, fork to probes 25 cm; maximum
clip diameter 15 mm)
(Cable length: connector to fork 1.7
m, fork to probes 10 cm; coiled
expanding section maximum 55 cm)
Current
source
terminal
During
measurement
Normal state
For 3555
9461 PIN TYPE LEADS
9770 PIN TYPE LEADS
9771 PIN TYPE LEADS
(Cable length: connector to fork
40 cm, fork to probes 25 cm)
(Cable length: connector to fork
40 cm, fork to probes 25 cm)
(Cable length: connector to fork
40 cm, fork to probes 25 cm)
Current
source
terminal
Normal state During
measurement
Temperature
sensor
Voltage
sense
terminal
2.5 mm dia.
Battery terminal
For 3555
3 mm dia.
Voltage
1.2 mm dia. sense
terminal 1.5 mm dia.
0.2 mm
For 3550, 3551
2.2 mm
Probes

For stabilizing fluctuating readings
0.6 mm dia.
Printed output
(Measurement possible with 9460 CLIP TYPE
-10 °C to 60 °C (resolution 0.1 °C)
14°F to 140°F (resolution 0.18°F)
LEADS WITH TEMPERATURE SENSOR)
10 sets / 260 sets of data
99 sets / 250 sets of data
(latest values retained)
(arbitrary values can be overwritten)
Measurement values and decision results Measurement values and decision results
from memory
from memory
1.8 mm dia.
Temperature
measurement
Comparator values /
memory capacity
7.4 mm
Battery terminal
2 mm
9 mm
9 mm
For 3550, 3551
For 3555
For 3555
For 3555
9467 LARGE CLIP TYPE LEADS
9452 CLIP TYPE LEADS
9287-10 CLIP TYPE LEADS
9453 FOUR TERMINAL LEADS
9454 ZERO ADJUSTMENT BOARD
(Cable length: connector to fork 85 Cable length : connector to fork (Cable length: connector to fork
cm, fork to probes 25 cm;
80 cm, fork to probes 20 cm 90 cm, fork to probes 10 cm)
maximum clip diameter 29 mm)
* Only the 9460 can carry out temperature measurement.
Cable length : connector to fork 80
cm, fork to probes approx. 30 cm
For zero-adjustment when 9461 or
9465 is used.
5
3550, 3551 BATTERY HiTESTER and 9203 DIGITAL PRINTER
Print out field data back at the office
In addition to basic data and decision result printing, this
printer can also produce statistics on the data, including
maximum, minimum, mean, and standard deviation
values, as well as histograms. Take advantage of this
versatile tool for desk analysis and trend-spotting from
data gathered in the field.
● Data memory function and printout function allow a single technician to perform efficiently a job which
formerly required two individuals.
● Standard deviations, histograms, and other statistical results are computed automatically and printed.
● Data handling capacity: 99,999 values (maximum 5000 values for histogram and graph printing; maximum
memory capacity of 3550 is 260 sets of data, and capacity of 3551 is 250 sets)
● Separate statistics, histograms, and graphs can be printed for each of the resistance, voltage, and
temperature values held in memory.
● Graphical printing functions make trends in data clear at a glance.
● Thermal print head produces high speed output.
Examples of printing
■ Statistics
■ Histogram
■ Graph
The following values are printed: total number of
data values, number of valid data values,
maximum, minimum, and maximum values and
their measurement numbers, standard deviation,
process capability index*, and bias.
In the automatic mode, the minimum and
maximum valid values are found, and
their mean is taken as the center value.
Then the optimum scaling is found to
classify values into five ranks above and
five ranks below this center value.
The minimum and maximum valid values
are taken as the full-scale values, then the
values are plotted in chronological
sequence. This shows trends over time in
the measured values.
* The process capability index is a numerical
value representing degree to which a process
reaches quality control targets.
6
3550, 3551 BATTERY HiTESTER & 9203 DIGITAL PRINTER
The 9203 DIGITAL PRINTER can also be used with other HIOKI
instruments; the following restrictions apply when it is used with
the 3550/3551.
*1 These settings are ignored.
*2 Computed values, histograms, and graphs are printed for each of the three
measurements of resistance, voltage, and temperature.
*3 The process productivity index is not computed for the voltage and temperature
measurement values.
*4 Histograms for the voltage and temperature measurements are always created
in auto mode.
■ 9203 DIGITAL PRINTER specifications
[General]
Printer
Lifetime
Recording
paper
Clock
Withstand
voltage
Insulation
resistance
: Thermal line printer
: At least 2 million lines
: 9233 RECORDING PAPER, 58 mm × 10 m
(approx. equivalent 3000 lines)
: Prints either real time or elapsed time
: Casing - power supply 1.5 kV A
(current sensitivity 20 mA)
: Casing - power supply at least 100 MΩ
[Printing data]
Maximum number
of printed values
Printing data *1
selection
Decision result
printing
Printing interval *1
MANU setting
AUTO setting
Cancel function *1
: 1 to 99,999
: ALL, IN, HL,
VAL (valid values only), OFF
: Hi, In, Lo, Pass, Warn, Fail,
OF, NG
: MANU/AUTO
: printing when PRINT key pressed
: 1/2/5/10/15/20/30 seconds,
1/2/5/10/15/20/30 minutes, 1 hour
: Most recent data can be deleted
(up to 5000 values)
[Statistics functions] *2
Data handling capacity : 99,999 values
Values computed
: Number of data values, maximum,
minimum, mean, standard
deviation, process capacity index *3
Operating temperature
and humidity
Maximum rated power
consumption
Power supply
: 0 to 40 °C (73.4˚F±9˚F), 80% rh
or less (no condensation)
: 30 VA
: 100 to 240 V AC
(±10%, 250 V max.), 50/60 Hz
Dimensions and mass : Approximately
215(8.5")W × 160(6.3")H ×54(2.1")D mm; 1 kg(33.8 oz)
Supplied : One power cord, 3-pin to 2-pin power adapter, one roll
9233 RECORDING PAPER, one spare fuse (T4A/250V)
[External input/output terminals]
Input
: PRINT/STOP
Output
: TRIG/ERROR (open collector)
Interface
: Centronics
9203: 36-pin (D-sub)
3550/3551: 20-pin half-pitch (D-sub)
* using 9425 CONNECTION CORD
[Histogram function] *2
Data handling capacity
Operation mode
MANU setting
(variation and bias, given upper and lower values)
AUTO setting
: 5000 values (if more than 5000,
most recent 5000 are used)
: MANU/AUTO *4
: Set center value (5-digit signed
value, plus unit), and rank width
0.1/0.2/0.5/1/2/5/10/20% (±5 ranks)
0.1/0.2/0.5/1/2/5/10% (±10 ranks)
: Center value and rank width set
automatically
[Graph printing] *2
Data handling capacity
Operation mode
: Same as for histogram function
: AUTO only
Measurement axis full-scale
minimum to maximum values; time
axis one value per line
7
■Specifications
[Specifications common to 3550, 3551, and 3555]
Measurements
: Resistance (AC four-terminal method), temperature
(platinum temperature sensor)
Temperature measurement only on 3550 and 3551
(using 9460 leads)
A/D conversion : Double integration method
Indications
: LCD panel and LED indicators (comparator results)
Panel display
:
(all segments shown)
* The 3555 display does not include "DATA," "MEMO," and "°C."
Sampling rate
: 0.83 times/second (3550/3551);
1.25 times/second (3555)
Beeper function : Audible alarm when comparator result is Warning or
Fail (switchable on/off)
Input overflow : "OF" indication
Constant current: "----" indication
fault detection
Open-circuit
: 5 V maximum
terminal voltage
Auto power off : Auto power off after 30 minutes
Comparator
: Resistance upper and lower limits, and voltage
settings
lower limit
Number of
: Ten sets (3550/ 3555) or 99 sets (3551) of
comparator settings
values held in memory
Comparator
: Pass (green), Warning (amber), and Fail (red) LEDs
output
Audible output on Warning or Fail
Operating temperature : 0 to 40 °C (32°F to 104°F), 80% rh or less
and humidity
(no condensation)
Absolute maximum : 50 V DC maximum (3550/3555) / 60 V DC
input voltage
maximum (3551), No AC input
Withstand voltage
: Between input terminals and output terminals
(including EXT. MEMO. HOLD terminals):
1.35 kV AC rms, 1 minute (3550)
2.3 kV AC rms, 1 minute (3551)
Between input terminals and casing:
350 V AC rms, 1 minute (3555)
Maximum rated
: 1.8 VA (3550) / 2.4 VA (3551) / 1.0 VA (3555)
power consumption
Continuous
: 7 hours (3550) / 5.5 hours (3551) / 18 hours (3555)
operating time
Power supply
: LR6 (AA) / alkali batteries × 6;
or 9418-10 AC adapter (option for 3551 only)
Approximate
: 196(7.7") W × 130(5.1") H × 50(2") D mm;
dimensions and mass 710 g(25 oz) including batteries (3550)
196(7.7") W × 130(5.1") H × 65(2.6") D mm;
860 g(30.3 oz) including batteries (3551)
196(7.7") W × 130(5.1") H × 50(2") D mm;
680 g(24 oz) including batteries (3555)
[Specifications for 3550/3551 only]
Data memory
: Measurement values stored in memory by
MEMO key or EXT. MEMO terminal short, or
on-probe switch (for 3551) (resistance, voltage,
temperature, and comparator results: 260 sets / 250 sets
on 3551)
Data recall
Moving average
function
Printer interface
: Data recalled from memory for display on screen
: For resistance values only (switchable on/off)
: Centronics
(can be connected to 9203 or a general-purpose printer)
[Measurement accuracy]
: 23°C ± 5°C (73.4˚F±9˚F), 80% rh or less
(no condensation), after zero adjustment and
warming up at least 10 minutes
Conditions to
guarantee accuracy
● Resistance measurement
Temperature coefficient
: (± 0.01 rdg. ± 0.5 dgt.) / °C
Measurement current frequency : 1 kHz ± 30 Hz
Measurement current accuracy : ±10 %
3551:
3550:
3555:
3 mΩ/ 30 mΩ / 300 mΩ
30 mΩ / 300 mΩ / 3 Ω
300 mΩ / 3 Ω / 30 Ω
Range
Temperature coefficient : (± 0.005% rdg. ± 0.5 dgt.) / °C
Range
Maximum indication *
Resolution
Accuracy
3 V
30 V
± 3.000 V
± 30.00 V
1 mV
10 mV
± 0.1%rdg. ± 6dgt.
± 0.1%rdg. ± 6dgt.
● Temperature measurement
(3550 and 3551[with 9460 leads] only)
ranges
ranges
ranges
Measurement
Maximum
indication * Resolution current
● Voltage measurement (common to 3550/3551/3555)
Accuracy
Measurement range
Resolution
Accuracy
-10°C to 60°C
(14°F to 140°F)
0.1°C
(0.18°F)
± 0.5%rdg. ± 10dgt.
[Note]
1 µΩ
50 mA
± 1.0%rdg. ± 8dgt.
Note the following points about the 3 mΩ range:
30.00 mΩ
10 µΩ
50 mA
± 0.8%rdg. ± 6dgt.
300.0 mΩ
100 µΩ
5 mA
± 0.8%rdg. ± 6dgt.
• The accuracy guarantee depends on no change in the measurement
lead configuration after zero adjustment.
• If the lead configuration changes significantly after zero adjustment, or
when using the 9460 leads, add ±15 dgt. to the figure in the table on
the left for the 3 mΩ range.
• For the 3 mΩ range only, the temperature coefficient is
(± 0.01% rdg. ± 0.8 dgt.) / °C
3 mΩ
3.100 mΩ
30 mΩ
300 mΩ
3
Ω
3.000
Ω
1 mΩ
500 µA
± 0.8%rdg. ± 6dgt.
30
Ω
30.00
Ω
10 mΩ
50 µA
± 0.8%rdg. ± 6dgt.
* The 3551 only has a maximum display value of 3100 for all resistance and voltage ranges.
3550 BATTERY HiTESTER
(Includes the 9460 CLIP TYPE LEADS WITH TEMPERATURE SENSOR,
9382 CARRYING CASE, dust cover, 6 ✕ LR6 batteries)
3551 BATTERY HiTESTER
(Includes the 9465 PIN TYPE LEADS, 9466 REMOTE CONTROL SWITCH,
9377 CARRYING CASE, dust cover, 6 ✕ LR6 batteries)
3555 BATTERY HiTESTER
(Includes the 9461 PIN TYPE LEADS, 6 ✕ LR6 batteries)
● Options
9382 CARRYING CASE (for the 3550, 3555 / Included with Model 3550)
9287-10 CLIP TYPE LEADS (for the 3555)
9452 CLIP TYPE LEADS (for the 3555)
9453 FOUR TERMINAL LEADS (for the 3555)
9454 ZERO ADJUSTMENT BOARD (for the 9461, 9465 / Include 3551)
9455 PIN TYPE LEADS (for high-density use / for the 3555)
9460 CLIP TYPE LEADS WITH TEMPERATURE SENSOR (for the 3550, 3551/ Include 3550)
9465 PIN TYPE LEADS (for the 3550, 3551 / Include 3551)
9467 LARGE CLIP TYPE LEADS (for the 3550, 3551)
9770 PIN TYPE LEADS (for high-density use / for the 3555)
9771 PIN TYPE LEADS (for high-density use / for the 3555)
9418-10 AC ADAPTER (for the 3551)
[universal 100 to 240V AC, 50/60Hz/12V DC-2.5A output]
9203 DIGITAL PRINTER (for the 3550, 3551)
9425 CONNECTION CORD (for connecting the 3550, 3551 to the 9203 / 2 meters)
9233 RECORDING PAPER (for the 9203/10meters, 10rolls)
DISTRIBUTED BY
HEAD OFFICE :
81 Koizumi, Ueda, Nagano, 386-1192, Japan
TEL +81-268-28-0562 / FAX +81-268-28-0568
E-mail: [email protected] hioki.co.jp
HIOKI USA CORPORATION :
6 Corporate Drive, Cranbury, NJ 08512 USA
TEL +1-609-409-9109 / FAX +1-609-409-9108
E-mail: [email protected] hiokiusa.com
Shanghai Representative Office :
1704 Shanghai Times Square Office
93 Huaihai Zhong Road
Shanghai, 200021, P.R.China
TEL +86-21-6391-0090, 0092
FAX +86-21-6391-0360
E-mail: [email protected]
All information correct as of Jan. 20, 2006. All specifications are subject to change without notice.
3550SE5-61M-03K
Printed in Japan