Extech Instruments BT100 Manuale utente

User's Guide

Battery Capacity Tester

Model BT100

Version 2.1 7/09

Introduction

The Battery Tester is designed for measuring the internal resistance and output voltage of

batteries including lead storage cell, nickel-cadmium battery, lithium-ion battery and nickel-

metal hydride battery.

AC four-terminal method to eliminates lead resistances and contact resistances and

yield the most accurate results.

1kHz test current with up to 10µΩresistance resolution.

Dual display simultaneously indicates the internal resistance and voltage of the

battery.

Comparator function with storage of up to 99 sets of resistance and voltage values for

battery deterioration characterization.

Pin type and alligator type 4-terminal Kelvin leads for quick and accurate resistance

measurements.

Memory capacity to store up to 999 manually stored data points or up to 9600 points

stored using interval datalogging.

RS232 PC port and Windows compatible software.

Warranty

EXTECH INSTRUMENTS CORPORATION warrants the basic instrument to be free of defects in parts and

workmanship for one year from date of shipment (a six month limited warranty applies on sensors and cables). If it

should become necessary to return the instrument for service during or beyond the warranty period, contact the

Customer Service Department at (781) 890-7440 EXTENSION 210 for authorization or visit www.extech.com for

more information. A Return Authorization (RA) number must be issued before any product is returned to

Extech. The sender is responsible for shipping charges, freight, insurance and proper packaging to prevent

damage in transit. This warranty does not apply to defects resulting from action of the user such as misuse,

improper wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification.

Extech specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not

be liable for any direct, indirect, incidental or consequential damages. Extech's total liability is limited to repair or

replacement of the product. The warranty set forth above is inclusive and no other warranty, whether written or

oral, is expressed or implied.

Version 2.1 7/09

Specifications

Measuring method: Resistance (AC four-terminal method).

A/D conversion: Dual slope method.

Display: Dual display LCD and LEDs (comparator output).

Sampling rate: 1 set (resistance & voltage measurements)/second.

Open-Circuit terminal voltage: 3.5Vpp max.

Input over range: “OL” display.

Low battery detection: display.

Test current fault detection: “- - - -” display.

Auto power off: After approximately 30 minutes.

Zero (Relative) function: Circuit offset voltage is displayed as 0V.

Hold function: Display is held.

Beeper function: Audible output for warning and fail results (can be

turned on and off).

Comparator settings: Resistance High and Low limits and voltage

threshhold point.

Number of comparator settings: 99 sets.

Comparator output: LEDs for pass (green), warning (yellow) and fail

(red) results, audible tone for warning and fail.

Resistance

Voltage Lo IN Hi

Lo Warning Warning Fail

Hi PASS Warning Fail

Manual Data logging: 999 sets.

Continuous Data logging: 9600 sets.

Operating environment: 32 to 104°F (0

to 40

°C)

80%RH (non-condensing)

Storage environment: 14 to 122°F (-10

to 50

°C)

80%RH (non-condensing)

Power source: Six AA size 1.5V batteries. (AC adaptor (output

9VDC) is optional)

Maximum power consumption: 1.0VA

Continuous operating time: 7 hours approx.

Maximum altitude value usable: 2000m or less.

Size: 9.8x3.9x1.7” (250×100×45mm)

Weight: 1.1 lbs (500g) approx. (including batteries)

Accessories: Test Leads, Instruction Manual, Batteries.

Option: AC adaptor (9V DC output).

Version 2.1 7/09

Electrical Specifications

Conditions to guarantee accuracy:

Temperature: 23

°C

Humidity: 80%RH or less (non-condensing).

Zero adjustment: After zero adjustment for each range.

Resistance measurement

Temperature coefficient: (

0.1% rdg

0.5digits)/

°C

Measuring current frequency: 1KHz

10%

Measuring burden voltage:

1.5mVAC

Range Resolution Measurement current Accuracy

40mΩ10µΩ37.5mA approx.

400mΩ100µΩ3.75mA approx.

4Ω1mΩ375µA approx.

40Ω10mΩ37.5µA approx.

(1% reading

10digits)

Voltage Measurement

Temperature coefficient (

0.1%rdg

0.5digits)/

°C

Range Resolution Accuracy

4V 1mV

40V 10mV

(0.1% reading

6digits)

Maximum Input Voltage: 50VDC maximum, No AC voltage input, , 60VDC and AC

maximum between input terminals and ground.

DANGER

Do not exceed the maximum permissible input voltage to the measurement terminal. This

could result in injury or damage to the unit.

Version 2.1 7/09

Meter Description

1. Power button: Power on /off

2. R READ button:

Press R button to show the manual

logged readings.

Press R READ button again to stop

reading.

3. M MEMORY button:

Under the manual logging mode, the

tester stores each single set of logged

reading to the memory by pressing

M MEMORY button.

Press and hold M MEMORY button

for 2 seconds to enter continuous

logging mode. Press again to stop

logging.

4. V-RANGE button: Select the voltage

range. (4V, 40V)

5. HOLD button:

Press HOLD button to freeze or unfreeze

the displayed reading.

Press and hold HOLD button for 2

seconds to enter the interval time setting

mode for continuous data logging.

6. Ω- RANGE button: Select the resistance range. (40mΩ, 400mΩ, 4Ω, 40Ω)

7. REL button:

Press button to move the cursor to the right.

Press REL (Relative) button to zero the reading.

8. button : Press button to increase the displayed value.

9. SET button:

Press SET button to switch the comparator mode on or off.

Press and hold the SET button for 2 seconds to enter the comparator-setting mode.

Press again to store the setting in memory.

10. button: Press button to decrease the displayed value.

11. Button:

Press button to move the cursor to the left.

Press button to turn the beeper on or off.

12. RS-232 connector: PC interface connector.

13. – Input jack: For connecting with the black test lead plug.

14. + Input jack: For connecting with the red test lead plug.

15. LCD display

16. AC adaptor input

Version 2.1 7/09

Display Description

1. Measured resistance reading (High or Low limit of resistance on the comparator

settings)

2. Measured voltage reading (High or Low limit of voltage on the comparator settings).

3. The assigned number of comparator: 99 sets

4. The location for the manual logged data.

5. Symbols:

mΩ: Milliohm (resistance).

V: Voltage.

HOLD : Hold function.

COMP : Comparator function enabled.

: Low-Battery

:Beeper enabled

DATA R : Manual datalogging enabled.

M : Continuous datalogging enabled (Flashes when data is stored).

INTV: Interval time settings of continuous datalogging function. (1~255

seconds).

COMP.SET : Comparator settings.

HIGH: High limit setting of the comparator resistance & voltage.

LOW: Low limit setting of the comparator resistance.

LED Display Indicators

PASS (green LED): Battery complies with the high limit of comparator.

WARNING (yellow LED) Battery is beginning to deteriorate.

FAIL (red LED): Battery has failed.

These indications will appear when the High and Low comparator limits for internal resistance and

the comparator threshold value for voltage are all set.

Version 2.1 7/09

Basic Operation

Preparation

The following safety information must be observed to ensure maximum personal safety

during the operation of this tester.

To avoid electric shock when replacing the batteries first disconnect the leads from the

object to be measured.

Check the battery polarity carefully when inserting the batteries.

Be sure to dispose of used batteries properly.

1. Remove the battery cover.

2. Insert the batteries into the battery compartment.

WARNING

Do not attempt to measure DC voltage exceeding 50V. Do not attempt to

measure AC voltages. This could result in injury or damage to the unit.

Do not attempt to measure the voltage of a generator. This would result in an

AC voltage being applied to the voltage generating output terminals, which is

dangerous.

After measuring a high voltage battery, before continuing to measure a low

voltage battery first short the measurement leads together. This will discharge

the DC-elimination capacitor which is connected across the leads. Otherwise

an excess voltage may be applied to the low voltage battery, which is

dangerous.

Test Leads

Two sets of test leads are supplied with the meter. Both sets provide 4 terminal Kelvin

connections which eliminates lead resistance and probe contact resistance from the

measurement. Use of either the alligator or press-probe is determined by the measurement

application.

Version 2.1 7/09

Operation

Connect the red test lead to the “+” jack and the black test lead to the “-” jack.

1. Press Power button to turn on the tester.

2. Connect the red test probe to the positive battery terminal, and the black test probe to

the negative battery terminal.

3. Use the V-RANGE and Ω-RANGE buttons to select the desired voltage and resistance

ranges.

4. Read the battery internal resistance and DC voltage directly from the display.

Note : When the measured DC voltage or battery internal resistance value is over range,

“OL” is displayed.

When the AC test current faults, “- - - -” will be displayed.

REL Zero Adjust

The REL function zeros the selected range of resistance and voltage. The reading

displayed when the REL button is pressed will be taken as zero and will be used to

calibrate subsequent measurements.

1. Short the 4 tips of red and black test leads probe terminals.

2. Press REL button. The display shows R , then the resistance and voltage value is zero,

connect the test leads probe to the battery to be tested.

3. The zero adjustment is valid only for the currently selected range, as long as the power

remains on.

Version 2.1 7/09

Comparator (99 sets)

The comparator function compares the measured values with preset High and Low limit

values for internal resistance and voltage level, and determines the range that the

measurement should fall into. Then, according to the following conditions, lights the

corresponding LED, and sounds a beeper under the WARNING and FAIL cases.

Comparator Settings

1. Press and hold the “SET” button for 2 seconds, the display will show COMP.SET

indicating the comparator mode is enabled.

2. Use the or button to change the comparator number from 01 up to 99.

3. Use the V-RANGE or Ω-RANGE button to set the desired voltage and resistance

measured range.

4. Press button one time, LOW and the left two digits of the low limit resistance will be

flashing. (Use the & buttons to select the desired value.)

5. Press button one time, the right two digits of the low limit resistance will be flashing.

(Use the and buttons to select the desired value.)

6. Press button one time, HIGH and the left two digits of the high limit resistance will be

flashing. (Use the and buttons to select the desired value.)

7. Press button one time, the right two digits of the high limit resistance will be flashing.

(Use the and buttons to select the desired value.)

8. Press button one time, the left two digits of the threshold voltage will be flashing.

(Use the and buttons to select the desired value.)

9. Pressbutton one time, the right two digits of the threshold voltage will be flashing.

(Use the and buttons to select the desired value.)

10. Repeat step 2 to step 9 to set the next comparator number.

11. Press SET button again to exit from comparator setting mode.

Comparator Tables

Resistance

Voltage

Low limit resistance High limit resistance

Lo Middle Hi

WARNING

Beeper

WARNING

Beeper

FAIL

Beeper

Voltage Lo

Comparison

Value Hi Pass WARNING

Beeper

FAIL

Beeper

Comparator Start / Stop Controls

1. Press SET button to start comparator function, the COMP indication will appear on the

display, and the comparator will be operating once the measurements are taken.

2. Pressand buttons to select the desired comparator number. The selected

comparator number remains in memory even when the power is turned off.

3. Press button to set the beeper on, the indication will appear on the display,

and the beeper will sound with a WARNING or FAIL result. Press button again to

disable the beeper.

4. Press SET button again to disable the comparator function.

Version 2.1 7/09

Datalogging

Manual Data Logging (999 sets)

1. Log the reading one by one to the memory by pressing the MMEMORY button.

“DATA M NO XXX” will appear on the LCD for one sec. to indicate the memorized

location.

2. Press RREAD button to review the logged readings. The display will show “DATA R

NO XXX”.

3. Press The and buttons to scroll through the logged readings.

4. Press RREAD button again to stop viewing logged readings.

Continuous Data Logging

1. Press HOLD button for 2 seconds, the display will show INTV.

2. Using or button, select the desired interval time from 1 second to 255 seconds.

3. Press SET button to exit interval time setting.

4. Press MMEMORY button for 2 seconds to enter continuous logging mode, the display

will show M.

5. The Mwill flash every time a reading is stored.

6. Press MMEMORY button again to exit continuous logging mode.

7. Data stored using continuous datalogging can not be read directly on the tester’s

display, it must be downloaded to a PC using the supplied software.

Erasing Memory

When memory is full, “Full” symbol will appear on the display and logging will stop.

1. Press button to turn off the tester.

2. Press and hold the MEMORY button, then press the button. The display will indicate “CLr”

and all datalogged readings will be cleared from memory.

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