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INSTRUCTIONS FOR:
DIGITAL AUTOMOTIVE ANALYSER 8 FUNCTION
MODEL No: TA200
Thank you for purchasing a Sealey product. Manufactured to a high standard this product will, if used according to these instructions
and properly maintained, give you years of trouble free performance.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS.
USE THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE
AND/OR PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. PLEASE KEEP INSTRUCTIONS SAFE FOR FUTURE USE.
1. SAFETY INSTRUCTIONS
WARNING! It is the user’s responsibility to read, understand and abide by the following safety instructions.
1.1. PERSONAL PRECAUTIONS
When using this meter, please observe all normal safety rules concerning:
Protection against the dangers of electric current.
Protection of the meter against misuse.
Full compliance with safety standards can only be guaranteed if used with the test leads supplied. If necessary, they must be replaced with
genuine Sealey leads with the same electronic ratings. Failure to do so will invalidate the warranty.
DO NOT use leads if damaged or if the wire is bared in any way.
1.2. GENERAL SAFETY INSTRUCTIONS
Familiarise yourself with the applications, limitations and hazards of the meter. IF IN ANY DOUBT CONSULT A QUALIFIED ELECTRICIAN
.
Before using the meter inspect the case. If you suspect any part of the case to be damaged or missing DO NOT USE THE METER.
Remove it from service immediately and contact your local Sealey dealer for advice/repairs.
When the meter is linked to a measurement circuit, do not touch unused meter terminals.
When the scale of the value to be measured is unknown set the selector to the highest range available.
Before rotating the rotary switch to change functions, disconnect test leads from the circuit under test.
WARNING! Never perform resistance measurements on live circuits.
Always be careful when working with voltages above 60Vdc or 30Vac rms. Keep your fingers behind the probe guards while measuring.
When not in use, store the meter carefully in a safe, dry, childproof location. Storage temperature range -10ºC to 50ºC.
Never apply voltage or current to the meter that exceeds the specified maximum.
Should the low battery indicator appear on the LCD display, replace the battery immediately (PP3). A low battery level could cause
the meter to produce inaccurate readings.
When not in use, store the meter in a safe, dry, cool and childproof location. DO NOT place in the proximity of a powerful source of
electromagnetic radiation.
2. INTRODUCTION
1. LCD display
2. Data hold button
3. Rotary switch
4. Input terminals
5. Power ON/OFF
6. Crocodile clips
7. Probes
3.1. Rotary Switch (fig.1(3))
The rotary switch allows
selection of the various
functions available and of the
settings for each individual
function.
DC voltage measurement
AC voltage measurement
DC Current measurement
Diode test
Continuity test
Resistance measurement
Automotive ignition dwell testing (degrees)
Automotive engine tach (rotation speed)
testing (x10 rpm)
Rotary
Switch
Position
Function
Fig 1
Durable bi-composite case and integral stand suitable for the toughest workshop conditions. Large,
hi-contrast LCD display with 21mm high digital read-out. Unique Test Lead Connection feature
indicates correct hook-up. Includes data hold feature and low battery display. Supplied with test
probes, crocodile clips and comprehensive manual.
3. FEATURES
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TA200 Issue No: 3 - 19/12/11
Original Language Version
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3.2. Display (Fig 2)
The LCD displays the
measured values obtained in
tests and various other
information regarding the
state/operation of the meter.
The following is an illustration
and descriptive list to enable
the user to understand the
information presented.
Battery is low.
Replace immediately using a PP3 9V
battery. Failure to do so could lead to
inaccurate readings.
Indicates an AC voltage or current.
The displayed value is the mean value
Indicates a negative reading
Diode test
Continuity buzzer is on
Data hold function is active
Indicates the requirement for test leads
to be connected.
Ω: Ohm. The unit of resistance.
kΩ: kilohm. 1x103 or 1000 ohms.
MΩ:Megaohm. 1x106 or
1,000,000 ohms.
V: Volts. The unit of voltage.
mV: Millivolt. 1x10
-3
or 0.001 volts
A: Amperes (amps). The unit of
current.
mA: Milliamp. 1x10
-3
or 0.001 amperes
Test of Dwell.
Tach x 10
Number of cylinders
Fig 2
Caution - high voltage testing
TA200 Issue No: 3 - 19/12/11
Original Language Version
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4. OPERATION
4.1. AC or DC voltage testing (fig 3)
WARNING! To reduce risk of electric shock, DO NOT attempt to measure voltages
higher than 1000V.
The measurement ranges DC voltage are 200mV, 2V, 20V, 200V and 1000V.
The measurement ranges AC voltage are 2V, 20V, 200V and 750V.
Select the range appropriate to the expected reading.
If the voltage to be measured is unknown, use the maximum measurement position
(1000V DC, 750V AC) and reduce the range, step by step until a satisfactory reading is
obtained. Should the meter become overloaded, the LCD will display “1”. This indicates that
a higher range must be selected.
In each range, the meter has an input impedance of approx 10MΩ.This may give rise to
measurement errors when dealing with high impedance circuits.
If the circuit impedance is <= 10kΩ,the error is negligible (0.1% or less).
4.1.1. To measure DC or AC voltage, connect the meter as follows:
4.1.2. Insert the red test lead into the “V” terminal and the black test lead into the “COM” terminal.
4.1.3. Set the rotary switch to an appropriate measurement position in or
4.1.4. Connect the test leads across the source being measured. The measured value will be
displayed. When the measurement has been completed, disconnect the test leads from the
circuit being tested.
4.2. DC Current testing (fig 4)
WARNING! Never attempt an in-circuit current measurement where the open circuit
voltage between terminals and ground is greater than 250V. If the fuse burns out
during measurement, the meter may be damaged and the user may be injured. Always
use correct terminals, function and range for the measurement.
When the test leads are connected to the current terminals, DO NOT parallel them
across any circuit.
The measurement ranges for DC current are 200.0mA and 10.00A.
4.2.1. To measure DC current, use the following procedure:
4.2.2. Turn off/disconnect power to the circuit, discharge all high voltage capacitors.
4.2.3. Insert the red test lead into the mA or 10A terminal and the black test lead into the COM
terminal.
4.2.4. Set the rotary switch to an appropriate measurement position in . If the current to be
measured is unknown, use the maximum measurement position (10A) and the 10A terminal,
then reduce the range step by step until a satisfactory reading is obtained.
4.2.5. Break the current path to be tested, connect the red test lead to the positive side of the
break and the black test lead to the negative side of the break (i.e. connect the meter in
series).
4.2.6. Turn on/reconnect power to the circuit. The measured value is shown on the display.
When the measurement has been completed, disconnect the test leads from the circuit being
tested.
Note: Within the 10A range, the meter must not be used for a period of greater than 10 seconds
more than once in any 15mins.
4.3. Resistance testing (fig 5)
WARNING! To avoid damage to the meter and/or the devices being tested, disconnect
circuit power and discharge all the high-voltage capacitors before measuring
resistance.
Never attempt an in-circuit current measurement where the open circuit voltage
between terminals and ground is greater than 60V DC or 30V AC rms.
The measurement ranges for resistance are: 200Ω, 2kΩ, 20kΩ, 200kΩ, 2MΩ,
and 20MΩ.
4.3.1. To measure resistance, connect the meter as follows:
4.3.2. Insert the red test lead into the Ωterminal and the black test lead into the COM terminal.
4.3.3. Set the rotary switch to an appropriate measurement position in Ω.
4.3.4. Connect the test leads across the object being measured. The measured value will be
displayed.
Note: The test leads themselves can add 0.1-0.2Ωto the resistance measurement. To obtain
a precision reading in the low-resistance range (i.e. 200Ω,short-circuit the input terminals
using the test leads beforehand and record the measured resistance as x. Then measure the
resistance of the object under test and record this value as y.
y – x = Correct value of resistance
If the resistance reading ≥0.5Ωin the short circuit condition, the test leads may be loose or
damaged. If damaged, replace immediately with suitable leads from your authorised Sealey
dealer.
For high resistance (>1MΩ) several seconds may be required to obtain a stable reading and
it is recommended that you use short test leads.
Where there is no input, the meter displays “1”.
When resistance measurement has been completed, disconnect the test leads from the
circuit being tested.
Note: During any of the following testing procedures, the data hold function can be employed.
When the “HOLD” button (see fig 1.2) is pressed, data hold is activated and the value
displayed at that instant on the LCD is held until the HOLD button is pressed again, at which
point the LCD once more displays the current measured value.
Fig 3
Fig 4
Fig 5
TA200 Issue No: 3 - 19/12/11
Original Language Version
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4.4. Diode testing (fig 6)
WARNING! To avoid damage to the meter and/or devices being tested, disconnect
circuit power and discharge all high-voltage capacitors before testing diodes.
Never attempt an in-circuit current measurement where the open circuit voltage
between terminals and ground is greater than 60V DC or 30V AC rms.
Use the diode test to check diodes, transistors, and other semiconductor devices. The diode
test sends current through the semiconductor junction, then measures the voltage drop
across the junction. A good silicon junction drops between 0.5V and 0.8V
4.4.1. To test a diode out of circuit, connect the meter as follows:
4.4.2. Insert the red test lead into the terminal and the black test lead into the COM terminal.
4.4.3. Set the rotary switch to .
4.4.4. For forward voltage drop readings on any semiconductor component, place the red test lead
on the components anode (+) and place the black test lead on the components cathode (-).
The measured value will be displayed.
Note: In a circuit, a good diode should still produce a forward voltage drop reading of 0.5-
0.8V but the reverse voltage drop reading can vary depending on the resistance of other
pathways between the probe tips.
Connect the test leads to the appropriate terminals as described in section 4.4.2 to avoid
error display.
The open circuit voltage is around 2.7V when testing a diode.
The LCD will display “1” indicating open-circuit if the meter test leads are incorrectly
connected.
When diode test has been completed, disconnect the test leads from the circuit being tested.
4.5. Continuity testing
WARNING! To avoid damage to the meter and to the device being tested, disconnect
circuit power and discharge all high-voltage capacitors before testing continuity.
Never attempt an in-circuit current measurement where the open circuit voltage
between terminals and ground is greater than 60V DC or 30V AC rms.
4.5.1. To test for continuity, connect the meter as you would for diode testing (see section 4.4).
4.5.2. Connect the test leads across the object/circuit being tested.
4.5.3. If the resistance value is >50Ω(i.e. the circuit is damaged/disconnected) the buzzer will not
sound.
4.5.4. The buzzer sounds continuously when the resistance is ≤30Ω.The circuit is operational.
Note: The LCD displays “1” indicating the circuit being tested is open.
Open circuit voltage is approx 2.7V.
When continuity testing has been completed, disconnect the connection between the testing
leads and the circuit under test.
4.6. Dwell testing (fig 7)
4.6.1. This function can be used to test the dwell of the cut-off switch (points or electronic) of an
ignition system.
4.6.1.1. Turn the rotary switch to the appropriate setting within the “DWELL” function area. There
is a choice between 4, 6 & 8 cylinders. Choose the setting appropriate to the engine in
question.
4.6.1.2. Insert the red test lead into the terminal and the black test lead into the COM
terminal. Connect the ends to be tested as shown in fig 7.
4.6.1.3. When testing the cut-off switch of an ignition system, connect the red test lead probe to
the primary negative end of the ignition coil (refer to the vehicle service manual for the
specific position).
4.6.2. If the dwell of arbitrary ON/OFF equipment is to be tested, connect the red probe to the
end of the equipment in question fitted with an ON/OFF switch.
4.6.3. Connect the black test lead probe to the good ground terminal of the automobile.
4.6.4. The measured dwell will be displayed on the LCD.
4.7. Engine tach (rotation speed) RPM x 10 (fig 8)
Engine tach RPM is the number of rotations completed by the main shaft of the engine per
minute.
4.7.1. Turn the rotary switch to the appropriate setting within the “RPM x 10” function area. There is
a choice between 4, 6 & 8 cylinders. Choose the setting appropriate to the engine in
question.
4.7.2. Insert the red test lead into the terminal and the black lead into the COM terminal.
Connect the ends to be tested as shown in fig 8.
4.7.2.1. If the vehicle uses a DIS ignition system with no distributor board, connect the red test
lead probe to the TACH (tachometer) signal line (which is connected to the computer DIS
module of the engine). Refer to the vehicle service manual for the specific location.
4.7.2.2. If the vehicle uses an ignition system with a distributor board, connect the red test lead
probe to the primary negative end of the ignition coil. Refer to the vehicle service manual
for the specific location.
4.7.3. Connect the black test lead probe to the good ground terminal of the automobile.
4.7.4. On starting the engine or whilst it is running, test the rotation speed of the engine and read
the value displayed. The display is RPM ÷ 10 i.e. the actual rotation speed is obtained by
multiplying the displayed value by 10.
Fig 6
Fig 7
Fig 8
TA200 Issue No: 3 - 19/12/11
Original Language Version
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4.8. Mass Air Flow (MAF) Sensor (fig 9)
4.8.1. A mass air flow sensor converts air flow readings into one of the following, depending on the
sensor:
a) a DC voltage
b) a low frequency signal
c) a high frequency signal
The TA200 is suitable for testing those sensors with a DC voltage or low frequency signal
output.
4.8.2. Connect the DC voltage type MAF sensor in the DC voltage testing fashion (see section 4.1)
and set the rotary switch on the meter to 20V DC. For a low frequency signal type MAF
sensor, connect the meter in the RMPx10 testing fashion (see section 4.7) and choose the
appropriate setting for number of cylinders.
4.8.3. Connect the black test lead probe to the ground terminal of the sensor and connect the red
one as illustrated in fig 9.
4.8.4. Switch on the meter and the vehicles ignition but DO NOT start the engine.
4.8.5. DC Voltage type sensor: The displayed value should usually be less than or equal to 1V
(consult the vehicle manufacturer’s specifications).
4.8.6. Frequency type sensor: Refer to the vehicle manufacturer ’s specifications to compare
against your readings.
4.9. Other functions
4.9.1. The TA200 can also be used to test the following automotive components:
Oxygen sensors, fuel injectors, temperature sensors, position sensors, MAP and baro
sensors.
4.9.2. Please refer to the vehicle manufacturer’s manual for specific test procedures.
Fig 9
5. MAINTENANCE
WARNING! DO NOT attempt to repair or service your meter unless you are qualified to do so and have the relevant calibration,
performance test and service information.
5.1. General maintenance:
5.1.1. Periodically wipe the case with a damp cloth and mild detergent. DO NOT use abrasives or solvents.
5.1.2. Clean the terminals with a cotton bud and mild detergent to prevent the build up of dirt/moisture in the terminals which may affect readings.
5.1.3. Turn the meter off when not in use and remove the battery if the meter is not to be used for some time.
5.2. To replace the fuses:
5.2.1. Turn the meter off and disconnect any leads/equipment from the terminals.
5.2.2. Remove the protective rubber jacket from the meter.
5.2.3. Remove the 3 larger screws from the rear of the case and open the meter.
5.2.4. Remove the fuse in question and replace with a fuse of identical type and specification:
Fuse 1: CE 315mA, 250V, fast type, 5x20mm
Fuse 2: CE 10A, 250V, fast type, 5x20mm
5.2.5. Close the meter case and replace the three screws and rubber jacket.
5.3. To replace the battery:
5.3.1. Turn the meter off and disconnect and leads/equipment from the terminals.
5.3.2. Remove the small screw holding the battery compartment lid, then remove the lid and the old battery.
5.3.3. Place a new 9V (PP3) battery into the meter taking care to observe the correct polarity.
5.3.4. Replace the battery compartment lid and the holding screw.
6. TECHNICAL SPECIFICATIONS
Range Resolution Accuracy Overload protection
200mV 0.1mV
2V 1mV
20V 10mV
200V 100mV
230V AC
±(0.5%+5)
1000V DC or
750V AC continuous
1000V 1V ±(0.8%+5)
DC Voltage
Range
Resolution
Accuracy
Overload protection
2V 1mV
20V 10mV
200V 100mV
±(0.8%+5)
1000V DC or
750V AC continuous
750V 1V
±(1.0%+4)
AC Voltage
Range Resolution Accuracy Overload protection
200Ω 0.1Ω
2kΩ 1Ω
20kΩ 10Ω
200kΩ 100Ω
600Vp
±(0.8%+5)
2MΩ 1kΩ
Resistance
2MΩ 10kΩ ±(1.5%+5)
Range
Resolution
Overload protection
1mV
600Vp
Continuity testing
Input impedance: 10MΩ
Input impedance: 10M
Frequency response: 40Hz ~ 400Hz
TA200 Issue No: 3 - 19/12/11
Original Language Version
Page 6
sales@sealey.co.uk
www.sealey.co.uk
Web
email
NOTE: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
IMPORTANT: No liability is accepted for incorrect use of this product.
WARRANTY: Guarantee is 12 months from purchase date, proof of which will be required for any claim.
INFORMATION: For a copy of our latest catalogue and promotions call us on 01284 757525 and leave your full name and address, including postcode.
01284 757500
01284 703534
Sole UK Distributor, Sealey Group,
Kempson Way, Suffolk Business Park,
Bury St. Edmunds, Suffolk,
IP32 7AR
TA200 Issue No: 3 - 19/12/11
Original Language Version
Range
Range Resolution
Accuracy
Overload protection
200mA 0.1mA ±(0.8%+5)
CE: Fuse 315mA,
250V, fast type,
5x20mm
10A 10mA
±(1.2%+5)
CE: Fuse 10A, 250V,
fast type, 5x20mm
DC Current
Resolution
Overload protection
1mV
600Vp
Diode
Range Resolution Accuracy Overload protection
4CYL
0.1º
6CYL
8CYL
600Vp
±(3%+5)
Dwell testing
Range Resolution Accuracy Overload protection
4CYL
10RPM
6CYL
8CYL
600Vp
±(3%+5)
Tach (rotation speed) testing
Input amplitude: ≥10V in direct impulse; ≥ 0.5mS in width.
Input amplitude: ≥10V in direct impulse; ≥ 0.5mS in width.
Maximum tach: 10000 RPM, displayed as RPM x10.
Environmental Protection.
Recycle unwanted materials instead of disposing of them as waste. All tools, accessories and packaging
should be sorted, taken to a recycle centre and disposed of in a manner which is compatible with the
environment.
When the product is no longer required, it must be disposed of in
an environmentally protective way. Contact
your local solid waste authority for recycling information.
WARNING: Do not dispose of by fire.This could result in an explosion.
Before disposing of battery, cover exposed terminals with heavy duty electrical tape to prevent shorting.
DO NOT expose battery to intense heat or fire as this could cause an explosion.
Battery Removal: See Section 5.3.
ONLY dispose of or recycle according to local authority regulations. Under the Waste Batteries and
Accumulators Regulations 2009, Jack Sealey Ltd are required to inform potential purchasers of products
containing batteries (as defined within these regulations), that they are registered with Valpak’s registered
compliance scheme. Jack Sealey Ltd’s Batteries Producer Registration Number (BPRN) is BPRN00705.
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