#165 🔌 DIY Repairing broken fuse 600V 400mA from Mastech MS8239C multimeter / Thermo Coupler P3401

in steemir •  7 years ago  (edited)

Wanted to start recording my movie about the Laser infrared thermometer GM550E.
But after checking my metrials for that very movie, I came to the conclusion my mutlimeter Mastech MS8239C was not operating like it should.
After some investigation it appeared that the low voltage fuse was blown.
This movie is about changing that very fuse from the Mastech multimeter.


Mastech MS8239C I bought here:
http://s.click.aliexpress.com/e/aMZFEQV

The future laser infrared thermometer:
http://s.click.aliexpress.com/e/aIAQ3Bm


Features:
The MS8239C is a small hand-held, safe and reliable 3.5” digital auto measuring range multi-meter with stable performance and novel structure. It can be used to measure DC voltage, AC/DC current, resistance, capacitance, frequency, duty ratio, temperature, diode forward voltage drop and circuit continuity. It is an ideal maintenance tool easily carried by a large number of users.

Specifications:
Operating environment and condition: 600V CAT.III, pollution grade: II.
Elevation < 2000 m
Environment temperature and humidity: 0~40°C, <80% RH (do not use meter when temperature <10°C).
Storage temperature and humidity: -10~60°C, <70% RH (remove the battery).
Temperature coefficient: 0.1´ Accuracy/°C(<18°C or >28°C).
The maximum allowable voltage between measurement end and ground: 600V DC or 600V AC RMS.
Fuse protection: grade mA: fuse F400mA/500V
grade 10A: fuse F10A/500V
Sampling rate: about 3 times/s.
Display: 3 3/4 bits of digit LCD display.
Over-range indication: LCD will show “OL”.
Low battery indication: When the battery voltage is lower than the normal operating voltage, “” will display on the LCD display.
Input polarity indication: automatically display “-” symbol.
Power supply: AAA 1.5V batteries.
DC voltage: 400mV/4V/40V/400V/600V ±(0.5% +3)
AC voltage: 4V/40V/400V/600V ±(1.2% +5)
DC current: 400uA/4000uA/40mA/400mA ±(1.0% +5), 10A ±(2.0% +10)
AC current: 400uA/4000uA/40mA/400mA ±(1.2% +5), 10A ±(2.5% +10)
Resistance: 200Ω/2KΩ/20KΩ/200KΩ/2MΩ ±(0.8% +5)
Frequency: 0HZ ~ 9.999MHz ± (1.5% +5)
Capacitance: 5nF/50nF/500nF/5uF/50uF/100uF ±(3.0% +5)
Duty cycle: 1% ~ 99.9% ±(3.0% +5)
Temperature (° C) -20 ° C ~ 1000 ° C ±(3.0% +3)
Temperature (° F) -4 ° F ~ 1832 ° F ±(3.0% +3)

Brand Name:MasTechDIY Supplies:ElectricalDimensions:19.50 x 9.20 x 5.50 cmMeasuring Resistance Range:400/4K/40K/4M/40MohmDisplay Type:Digital DisplayMeasuring Capacitance Range:5nF/50nF/500nF/5uF/50uF/100uFMeasuring Voltage Range:400mV/4V/40V/400V/600VMeasuring Current Range:400uA/4000uA/40mA/400mA/4A/10AOperating Temperature:-20 - 10000 ℃Measuring Inductance Range:as descriptionOperating Mode:Auto+ManualModel Number:MS8239Cfree shipping :yeshave in stock:yesType:Professional MultimeterProduct Name:Professional Electrical InstrumentMaterial:ABS,Copper,IronPower:2 x AAA batteries (not included)Contents:1 x Digital Multimeter,2 x Test Lead, 1 x TPackage Contents:1 x Multimeter, 2 x Test Lead, 1 x TemperFunction:Voltage, Current, Resistance, Capacitance

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