Sealey TM100 User manual

1.1. PERSONAL PRECAUTIONS
When using this multimeter, please observe all normal safety rules concerning:
Protection against the dangers of electrical 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 electrical ratings. Failure to do so will invalidate the warranty.
DO NOT use leads if damaged or if the wires are bared in any way.
1.2. GENERAL SAFETY INSTRUCTIONS
Familiarise yourself with the application and limitations of the multimeter as well as the potential hazards.
IF IN ANY DOUBT CONSULT A QUALIFIED ELECTRICIAN.
USE EXTREME CAUTION when working with high voltages.
When the meter is connected to a circuit, do not touch unused meter terminals.
When the magnitude of the value to be measured is unknown, set the range selector to the highest value available.
 Before commencing testing, follow instructions below and select the correct input sockets, function and range on the
multimeter.
Before rotating the rotary switch to change functions, disconnect the test leads from the circuit under test.
Take care when working with voltages above 35V DC or 25V AC rms. These voltages are considered a shock hazard.
Keep fingers behind the probe barriers whilst measuring.
 DO NOT test voltages above 600V - the circuitry of the multimeter may be destroyed.
WARNING! NEVER connect the multimeter to a voltage source / live circuit when the rotary switch is set to any other
function apart from Voltage testing.
WARNING! NEVER perform resistance, transistor, diode or continuity measurements on live circuits.
 ALWAYSdischargeltercapacitorsinpowersuppliesanddisconnectthepowerwhenmakingresistanceordiodetests.
WARNING! Voltage checks on electrical outlets can be difficult and misleading because of the uncertainty of connection to
the recessed electrical contacts. Other means should be used to ensure that the terminals are not “live”.
 DO NOT use the multimeter in a potentially explosive atmosphere.
NEVER operate the meter unless the back cover and the battery and fuse covers are in place and fastened securely.
 If any abnormal readings are observed, the multimeter must be checked out by an authorised technician.
 When not in use, store the multimeter carefully in a safe, dry, childproof location out of direct sunlight.
Storage temperature range -20°C to 60°C.
ALWAYS turn off the power and disconnect the test leads before opening the cover to replace the fuse or batteries.

The warnings, cautions and instructions referred to in this manual cannot cover all possible conditions and situations
that may occur. It must be understood that common sense and caution are factors which cannot be built into this
product, but must be applied by the operator.
1.3. SAFETY SYMBOLS:
This symbol adjacent to another symbol, terminal or operating device indicates that the operator must refer
to an explanation in the Operating Instructions to avoid personal injury or damage to the meter.
This WARNING symbol indicates a potentially hazardous situation, which if not avoided, could result in death
or serious injury.
This CAUTION symbol indicates a potentially hazardous situation, which if not avoided, may result damage
to the product.
Thissymbol,adjacenttooneormoreterminalsidentiesthemasbeingassociatedwithrangesthatmay,
in normal use, be subjected to particularly hazardous voltages. For maximum safety, the meter and its test
leads should not be handled when these terminals are energized.
This symbol indicates that a device is protected throughout by double insulation or reinforced insulation.
WARNING
CAUTION
INSTRUCTIONS FOR:
PROFESSIONAL DIGITAL
MULTIMETER - 6 FUNCTION
MODEL No: TM100
1. SAFETY
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. KEEP THESE INSTRUCTIONS SAFE FOR
FUTURE USE.
The user shall ensure that test probes are correctly selected in order to prevent danger. Probes shall be selected to ensure
that adequate barriers guard against inadvertent hand contact with live conductors under test and that probes have minimal
exposed probe tips. Where there is a risk of the probe tip short circuiting with other live conductors under test, it is
recommended that the exposed tip length shall not exceed 4mm.
TM100 Issue No:2(I) - 18/06/14
Original Language Version
© Jack Sealey Limited

High precision multimeter. Conforms with EN61010-1 CATIII
600V safety requirements for electrical equipment for
measurement, control, and laboratory use. Double moulded
housing with soft grip case and large display for ease of use.
Probe and lead storage and integral upright stand for use on the
workbench. Supplied in zipped pouch with carry strap.
Measures:
•ACandDCVoltage
•DCCurrent
•Resistance
•DiodeTest
•ContinuityBuzzer
2. FEATURES
WARNING! NEVERapplyvoltageorcurrenttothemeterthatexceedsthespeciedmaximumasshownbelow:
WARNING! USE EXTREME CAUTION when working with
high voltages.
Input Limits
Function Maximum Input
V AC 600V DC/AC
V DC or V AC
600V DC/AC, 200Vrms on 200mV
range
mA DC 200mA 250V fast acting fuse
A DC 10A 250V fast acting fuse
(30 seconds max every 15 minutes)
Resistance,
Continuity
250Vrms for 15sec max
1. LCD Display
2. Function Switch
3. 10A Jack
4. COM Jack
5. Positive Jack
6. Note: Tilt stand, fuse and battery
compartment are on rear of unit.
1
2
3
4
5
SYMBOLS AND ANNUNCIATORS
•))) Continuity
Diode Test
µ Micro (amps)
m Milli ( volts, amps)
k Kilo (ohms)
Ω Ohms
VDC Volts Direct Current
VAC Volts Alternating Current
ADC Amps Direct Current
BAT Battery Test
1.4. BATTERY INSTALLATION
WARNING! To avoid electric shock, disconnect the test
leads from any source of voltage before removing the battery
cover.
Disconnect the test leads from the meter.
Open the battery cover by loosening the two cover screws
using a Phillips head screwdriver.
Insert the battery into battery holder, observing the correct
polarity.
Replace the battery cover. Secure with the screws.
WARNING! To avoid electric shock, do not operate the meter
until the battery cover is in place and fastened securely.
NOTE! If your meter does not work properly, check the fuses and
battery to make sure that they are still good and that they are
properly inserted.
REMOVE SCREWS
TO ACCESS
BATTERY AND
FUSES
TM100 Issue No:2(I) - 18/06/14
Original Language Version
© Jack Sealey Limited

3. SPECIFICATION
Function Range Resolution Accuracy
DC Voltage
(V DC)
200mV 0.1mV
±(0.5% reading + 2 digits)2000mV 1mV
20V 0.01V
200V 0.1V
±(0.8% reading + 2 digits)
600V 1V
AC Voltage
(V AC)
200V 0.1V ±(1.2% reading + 10 digits
(50/60Hz)
600V 1V
DC Current
(A DC)
2000µA 1µA
±(1.0% reading + 2 digits)
20mA 10µA
200mA 100µA ±(1.2% reading + 2 digits)
10A 10mA ±(2.0% reading + 2 digits)
Resistance
200Ω 0.1Ω
±(0.8% reading + 2 digits)
2000Ω 1Ω
20kΩ 0.01kΩ
200kΩ 0.1kΩ
2000kΩ 1kΩ ±(1.0% reading + 2 digits)
Battery Test
9V 10mV
±(1.0% reading + 2 digits)
1.5V 10mV
NOTE!Accuracyspecicationsconsistoftwoelements:
1. (% reading) – This is the accuracy of the measurement circuit.
2. (+ digits) – This is the accuracy of the analog to digital converter.
NOTE! Accuracy is stated at 65°F to 83°F (18°C to 28°C) and less than 75% RH.
Diode Test:...................................Test current of 1mA maximum, open circuit voltage 2.8V DC typical.
Continuity Check: ........................Audiblesignalwillsoundiftheresistanceislessthanapproximately30Ω.
Battery Test Current:.................... 9V (6mA); 1.5V (100mA).
Input Impedance:.........................>1MΩ.
ACV Bandwidth: ..........................45Hz to 450Hz.
DCA Voltage Drop: ......................200mV.
Display:........................................3 ½ digit, 2000 count LCD, 1.1” digits.
Overrange Indication: ..................“I” is displayed.
Polarity:........................................Automatic (no indication for positive polarity); Minus (-) sign for negative polarity.
Measurement Rate:.....................2 times per second, nominal.
Low Battery Indication: ................“BAT” is displayed if battery voltage drops below operating voltage.
Battery: ........................................One 9 volt (PP9) battery.
Fuses: .........................................mA, µA ranges; 0.2A / 250V fast blow.
A Range:......................................10A/250V fast blow.
Operating Temperature:...............32°F to 122°F (0°C to 50°C).
Storage Temperature:..................-4°F to 140°F (-20°C to 60°C).
Relative Humidity:........................<70% operating, <80% storage.
Operating Altitude:.......................7000ft. (2000) meters maximum.
Weight: .......................................255g.
Size: ..........................................150mm x 70mm x 48mm.
Safety: For indoor use and in accordance with Overvoltage Category II, Pollution Degree 2. Category II includes local level,
appliance, portable equipment, etc., with transient overvoltages less than Overvoltage Category III.
TM100 Issue No:2(I) - 18/06/14
Original Language Version
© Jack Sealey Limited

4. OPERATING INSTRUCTIONS
WARNING! Risk of electrocution. High-voltage circuits, both AC and DC, are very dangerous and should be measured with
great care.
1. ALWAYS turn the function switch to the “OFF” position when the meter is not in use.
2. If “OL” appears in the display during a measurement, the value exceeds the range you have selected. Change to a higher
range.
NOTE! On some low AC and DC voltage ranges, with the test leads not connected to a device, the display may show a
random reading. This is normal and is caused by the high-input sensitivity. The reading will stabilise and give a proper
measurement when connected to a circuit.
4.1. DC VOLTAGE MEASUREMENTS
CAUTION: Do not measure DC voltages if a motor on the circuit is being switched ON or OFF. Large voltage surges may
occur that can damage the meter.
4.1.1. Set the function switch to the highest V DC position.
4.1.2. Insert the black test lead banana plug into the negative (COM) jack. Insert the red test lead banana plug into the positive (V)
jack.
4.1.3. Touch the black test probe tip to the negative side of the circuit. Touch the red test probe tip to the positive side of the circuit.
4.1.4. Read the voltage in the display. Reset the function switch to successively lower V DC positions to obtain a higher resolution
reading. The display will indicate the proper decimal point and value.
If the polarity is reversed, the display will show (-) minus before the value.
4.2. AC VOLTAGE MEASUREMENTS
WARNING! Risk of Electrocution. The probe tips may not be long enough to contact the live parts inside some 240V outlets
for appliances because the contacts are recessed deep in the outlets.
As a result, the reading may show 0 volts when the outlet actually has voltage on it. Make sure the probe tips are touching
the metal contacts inside the outlet before assuming that no voltage is present.
CAUTION: Do not measure AC voltages if a motor on the circuit is being switched ON or OFF. Large voltage surges may
occur that can damage the meter.
4.2.1. Set the function switch to the highest V AC position.
4.2.2. Insert the black test lead banana plug into the negative (COM) jack.
Insert red test lead banana plug into the positive (V) jack.
4.2.3. Touch the black test probe tip to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.
4.2.4. Read the voltage in the display. Reset the function switch to successively lower V AC positions to obtain a higher resolution
reading. The display will indicate the proper decimal point and value.
4.3. DC CURRENT MEASUREMENTS
CAUTION: Do not make current measurements on the 10A scale for longer than 30 seconds. Exceeding 30 seconds may
cause damage to the meter and/or the test leads.
4.3.1. Insert the black test lead banana plug into the negative (COM) jack.
4.3.2. For current measurements up to 200mA DC, set the function switch to the highest DC mA
position and insert the red test lead banana plug into the (mA) jack.
4.3.3. For current measurements up to 10A DC, set the function switch to the 10A range and insert the red test lead banana plug
into the (10A) jack.
4.3.4. Remove power from the circuit under test, then open up the circuit at the point where you wish to measure current.
4.3.5. Connect test leads in series with the circuit under measurement.
4.3.6. Apply power to the circuit.
4.3.7. Read the current in the display. For mA DC measurements, reset the function switch to successively lower mA DC positions
to obtain a higher resolution reading. The display will indicate the proper decimal point and value.
TM100 Issue No:2(I) - 18/06/14
Original Language Version
© Jack Sealey Limited

4.4. RESISTANCE MEASUREMENTS
WARNING! To avoid electric shock, disconnect power to the unit under test and discharge all
capacitors before taking any resistance measurements. Remove the batteries and unplug the line cords.
4.4.1.SetthefunctionswitchtothehighestΩposition.
4.4.2.Inserttheblacktestleadbananaplugintothenegative(COM)jack.InserttheredtestleadbananaplugintothepositiveΩ
jack.
4.4.3. Touch the test probe tips across the circuit or component under test. It is best to disconnect one side of the component
under test so the rest of the circuit will not interfere with the resistance reading.
4.4.4.ReadtheresistanceinthedisplayandthensetthefunctionswitchtothelowestΩpositionthatisgreaterthantheactualor
any anticipated resistance. The display will indicate the proper decimal point and value.
5.1. REPLACING THE BATTERY
WARNING! To avoid electric shock, disconnect the test leads from any source of voltage before removing the battery door.
5.1.1. When the battery become exhausted or drop below the operating voltage, “BAT” will appear in the right-hand side of the
LCD display. The battery should be replaced.
5.1.2. Follow instructions for installing battery. See the Battery Installation section of this manual (page 2).
Dispose of the old battery properly.
WARNING! To avoid electric shock, do not operate your meter until the battery cover is in place and fastened securely.
5.2. REPLACING THE FUSES
WARNING! To avoid electric shock, disconnect the test leads from any source of voltage before removing the fuse cover.
 WARNING! Before attempting to open the case, ensure that the test leads have been disconnected from the multimeter
and that it is switched off to avoid electric shock hazard.
5.2.1. Disconnect the test leads from the meter and any item under test.
5.2.2. Open the fuse cover by loosening the screw on the cover using a Phillips head screwdriver.
5.2.3. Remove the old fuse from its holder by gently pulling it out.
5.2.4. Install the new fuse into the holder.
5.2.5. Always use a fuse of the proper size and value (0.5A/250V fast blow for the 200mA range, 10A/250V fast blow for the 10A
range).
5.2.6. Replace the fuse cover back in place. Insert the screw and tighten it securely.
WARNING! To avoid electric shock, do not operate your meter until the fuse cover is in place and fastened securely.
5.3. Clean the multimeter’s casing using a slightly dampened cloth and mild detergent - do not use any abrasives or solvents.
Clean the inside of each terminal using a swab soaked in isopropyl alcohol, use a new swab to apply a light coat of
machine oil to each terminal.
5.4. If the multimeter is to be stored for a long period of time, remove the battery first to avoid any damage.
4.5 CONTINUITY CHECK
WARNING! To avoid electric shock, never measure continuity on circuits or wires that have voltage on them.
4.5.1.Setthefunctionswitchtothe/•)))position.
4.5.2.Inserttheblackleadbananaplugintothenegative(COM)jack.Inserttheredtestleadbananaplugintothepositive(Ω)
jack.
4.5.3. Touch the test probe tips to the circuit or wire you wish to check.
4.5.4.Iftheresistanceislessthanapproximately30Ω,theaudiblesignalwillsound.Ifthecircuitisopen,thedisplaywillindicate
“I”.
4.6. DIODE TEST
4.6.1. Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive diode
jack.
4.6.2.Turntherotaryswitchtothe/•)))position.
4.6.3 Touch the test probes to the diode under test. Forward voltage will indicate 400 to 700mV. Reverse voltage will indicate “I”.
Shorted devices will indicate near 0mV. Shorted devices will indicate near 0mV and an open device will indicate “I” in both
polarities.
4.7. BATTERY TEST
4.7.1. Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive V jack.
4.7.2. Select the 1.5V or 9V BAT position using the function select switch.
4.7.3. Connect the red test lead to the positive side of the 1.5V or 9V battery and the black test lead to the negative side of the
1.5V or 9V battery.
4.7.4. Read the voltage in the display.
Good Weak Bad
9V battery: >8.2V 7.2 to 8.2V <7.2V
1.5V battery: >1.35V 1.22 to 1.35V <1.22V
5. MAINTENANCE
TM100 Issue No:2(I) - 18/06/14
Original Language Version
© Jack Sealey Limited

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.
Battery Removal.
WARNING! To avoid electric shock, disconnect the test leads from any
source of voltage before removing the battery door.
Disconnect the test leads from the meter.
Open the battery cover by loosening the two cover screws using a Phillips
   headscrewdriver(g.Abelow).
Lift the battery from the meter and unclip from the battery socket.
Replace the battery cover back in place. Secure with the screws.
 WARNING! To avoid electric shock, do not operate the meter until the
battery cover is in place and fastened securely.
Dispose of batteries according to local authority guidelines.
TM100 Issue No:2(I) - 18/06/14
Original Language Version
REMOVE SCREWS
TO ACCESS
BATTERY AND
FUSES
g.A
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
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
[e-mail]
Sole UK Distributor, Sealey Group,
Kempson Way, Suffolk Business Park,
Bury St. Edmunds, Suffolk,IP32 7AR
www.sealey.co.uk
© Jack Sealey Limited