5. MAINTENANCE
4. SPECIFICATION
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.
5.1.
Changing a fuse.The fuses are located on the back of the circuit board. To gain access to the fuses, remove the protective rubber boot and
the two screws from the rear of the multimeter. Lift off the rear cover, replace the appropriate fuse and re-assemble in reverse order.
WARNING!
ALWAYS
replace a fuse with one of the correct rating.
Fuse 1: 500mA/250V
Fuse 2: 10A/250V
5.2.
If the battery sign appears on the LCD display, it indicates that the battery must be replaced. repeat the steps detailed in section
5.1 to remove the rear cover, replace the battery (9V PP3) and re-assemble in reverse order.
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.
DC VOLTAGE
Range
Accuracy
Resolution
200mV
±0.8% of reading ±4 digits
100
µV
2V
±0.8% of reading ±4 digits
1mV
20V
±0.8% of reading ±4 digits
10mV
200V
±0.8% of reading ±4 digits
100mV
600V
±1.2% of reading ±4 digits
1V
Input impedance: 10M
Ω
for all ranges. overload
Protection: 600V dc or peak ac on all ranges.
overload Protection:200V rms ac for 200mV range and
600V dc or ac for other ranges.
AC VOLTAGE
Range
Accuracy
Resolution
2V
±0.8% of reading ±5 digits
1mV
20V
±0.8% of reading ±5 digits
10mV
200V
±0.8% of reading ±5 digits
100mV
600V
±1.2% of reading ±4 digits
1V
Input impedance: 10M
Ω
for all ranges.
Frequency range: 40Hz to 1kHz
overload Protection: 220V rms ac for 200mV range and
600V dc or ac for other ranges.
Indication: Average (rms of sine wave).
DC CURRENT
Range
Accuracy
Resolution
2mA
±0.8% of reading ±4 digits
1µA
20mA
±0.8% of reading ±4 digits
10µA
200mA
±1.2% of reading ±5 digits
100µA
10A
±2.0% of reading ±5 digits
10mA
overload protection: Fuse 1: 500mA/250V
Maximum Input Current: Fuse 2: 10A/250V (10A
up to 15 seconds).
Measuring Voltage Drop: 200mV.
AUDIBLE CONTINUITY TEST
Range
Description
Buzzer sounds if
resistance is less than 30 ohms
open Circuit Voltage approximately 2.8V
BATTERY TEST
Range
Accuracy
Current
1.5V
±0.8% of reading ±2 digits
60mA
9.0V
±0.8% of reading ±2 digits
12mA
TRANSISTOR hFE TEST (External test socket)
Range
Description
Test Condition
hFE
Displays approximate
hFE value (1-1000) of
transistor.
Base current
approximately 10µA.
VCE approximately
2.8V.
AC CURRENT
Range
Accuracy
Resolution
2mA
±1.2% of reading ±3 digits
1µA
20mA
±2.0% of reading ±3 digits
10µA
200mA
±2.0% of reading ±3 digits
100µA
10A
±3.0% of reading ±7 digits
10mA
overload protection: Fuse 1: 500mA/250V
Indication: Average (rms of sine wave).
Maximum Input Current: Fuse 2: 10A/250V (10A
up to 15 seconds).
Measuring Voltage Drop: 200mV.
Frequency range: 40Hz to 1kHz
.
RESISTANCE
Range
Accuracy
Resolution
200
Ω
±1.0% of reading ±8 digits
0.1
Ω
2k
Ω
±1.2% of reading ±8 digits
1
Ω
20k
Ω
±1.2% of reading ±8 digits
10
Ω
200k
Ω
±1.2% of reading ±8 digits
100
Ω
2M
Ω
±1.2% of reading ±8 digits
1k
Ω
20M
Ω
±1.2% of reading ±8 digits
10k
Ω
Maximum open circuit voltage less than 750mV.
overload protection: 220V dc/ac rms on all ranges.
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.
See Section 5.2.
1.
remove and dispose of according to local authority guidelines.
2.
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.
Sole UK Distributor, Sealey Group,
Kempson Way, Suffolk Business Park
,
Bury St. Edmunds, Suffolk,
IP32 7Ar
Original Language Version
01284 757500
01284 703534
sales@sealey.co.uk
www.sealey.co.uk
Web
MM24 Issue no: 2 - 02/07/10
DIODE TEST
Range
Description
Test Condition
(2k)
Displays approximate
forward Voltage of
Diode
Forward DC current
approximately 1mA.
reversed DC voltage
approximately 2.8V
Parts support is available for this product. To obtain a parts listing and/or diagram,
please log on to www.sealey.co.uk, email sales@sealey.co.uk or phone 01284 757500.
