Fatmax FMHT77419 - Multimeter STANLEY - Free user manual and instructions

USER MANUAL Fatmax FMHT77419 STANLEY

FMHT77419 DIGITAL MULTIMETER www.2helpU.com Please read these instructions before operating the product.

• Do not use the meter if it is damaged. Before you use the meter, inspect the case. Pay particular attention to the insulation surrounding the connectors.

• Inspect the test leads for damaged insulation or exposed metal. Check the test leads for continuity. Replace damaged test leads before you use the meter.

• Do not use the meter if it operates abnormally. Protection may be impaired. When in doubt, have the meter serviced.

• Do not operate the meter around explosive gas, vapor, or dust.

• Do not apply more than the rated voltage, as marked on the meter, between terminals or between any terminal and earth ground.

• Before use, verify the meter’s operation by measuring a known voltage.

• When measuring current, turn off circuit power before connecting the meter in the circuit. Remember to place the meter in series with the circuit.

• When servicing the meter, use only specified replacement parts.

• Use caution when working with voltage above 30V ac rms, 42V peak, or 60Vdc. Such voltages pose a shock hazard.

• When using the probes, keep your fingers behind the finger guards on the probes.

• When making connections, connect the common test lead before you connect the live test lead. When you disconnect test leads, disconnect the live test lead first.

• Remove the test leads from the meter before you open the battery cover or the case. EN17

• Do not operate the meter with the battery cover or portions of the case removed or loosened.

• To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the low battery indicator (” ”)appears.

• Do not use the meter in a manner not specified by this manual or the safety features of the meter may be impaired.

• When in Relative mode (the symbol ” ” is displayed) or in Data Hold mode (the symbol ” ” is displayed), caution must be used because hazardous voltage may be present.

• Do not touch any naked conductor with hand or skin.

• Do not ground yourself.

• Do not operate this meter if your hand or the meter is wet.

• Adhere to local and national safety codes. Use Individual protective equipment to prevent shock and arc blast injury when working in an area where hazardous live conductors are exposed.

• Use only the test leads specified by the factory.

• During replacement of fuses, please only use the spare fuses from Stanley Fatmax.

• Remaining endangerment: When an input terminal is connected to dangerous live potential it is to be noted that this potential at all other terminals can occur!

• CAT III - Measurement category III is for measurements performed in the building installation. Examples are measurements on distribution boards, circuit breakers, wiring, including cables, bus-bars, junction boxes, switches, socket-outlets in the fixed installation, and equipment for industrial use and some other equipment, for example, stationary motors with permanent connection to fixed installation. Do not use the meter for measurements within Measurement Categories IV. Caution To avoid possible damage to the meter or to the equipment under test, follow these guidelines:

• Disconnect circuit power and discharge all capacitors before testing resistance, diode, capacitor and continuity.

• Use the proper terminals, function, and range for your measurements.

• Before measuring current, check the meter‘s fuses and turn off the power to the circuit before connecting the meter to the circuit.

• Before rotating the range switch to change functions, disconnect test leads from the circuit under test. Symbol Alternating Current Direct Current DC orAC18 Caution, risk of danger, refer to the operating manual before use. Caution, risk of electric shock. Earth (ground) Terminal Fuse Conforms to European Union directives The equipment is protected throughout by double insulation or reinforced insulation. GENERAL DESCRIPTION This meter is a compact 3 3/4 digits digital multimeter for measuring DC and AC voltage, DC and AC current, resistance, capacitance, frequency, diode, continuity and duty cycle. It features polarity indication, data hold, overrange indication, automatic power-off. It is easy to operate and is an ideal measurement tool. STRUCTURE

FMHT77419 3 3/4-digit LCD, with a max. reading of 3999

When the function/range switch is in ”Hz/%” position, pressing this button switches the meter between frequency and duty cycle measurements.

Used to switch between autorange mode and manual range mode as well as to select desired manual range.

In current measurement functions, pressing this "S" button switches the meter between DC current and AC current measurements. When the Function/Range switch is in " " position, pressing this button switches the meter between diode and continuity measurements.

5. Function / Range Switch

Used to select the desired function and range as well as to turn on or off the meter.

Plug-in connector for the red test lead for current (400mA - 10A) measurements.19

Plug-in connector for the red test lead for the current measurements < 400mA.

Plug-in connector for the black test lead for all measurements.

Terminal Plug-in connector for the red test lead for all measurements except current measurements.

Press this button to turn on/off the backlight.

Used to enter/exit Relative mode.

Symbol Meaning. Auto Range Continuity test is selected. Auto Range Diode test is selected. Auto Range Data Hold is enabled. Auto Range Relative mode is active. Auto Range

Auto Range DC. Auto Range Negative sign Auto Range Battery is low and should be replaced immediately Auto Range Autorange mode is selected.

10. Units on the LCD

ɥA, mA, A Current unit ɥA: Microamp; mA: Milliamp; A: Ampere 1A = 10

% Unit of duty cycle %: Percent GENERAL SPECIFICATION Display: 3 3/4-digit LCD, with a max. reading 3999 Overrange Indication: "OL" shown on the display Negative Polarity Indication: negative sign " " shown on the display automatically Sampling Rate: 2 -3 times/sec Operating Environment: 0°C ~ 40°C, < 75%RH Temperature Coefficient: 0.2 x (specified accuracy)/°C (< 18°C or > 28°C) Storage Environment: - 10°C ~ 50°C, <85%RH Operating Altitude: 0 to 2000 meters Battery: 9V, 6F22 or equivalent, 1 piece Low Battery Indication: " " shown on the display Size: 217x100x49mm Weight: about 500g (including battery) IP: 51 SPECIFICATIONS Accuracy is specified for a period of one year after calibration and at 18°C to 28°C, with relative humidity < 75%. Except where specified, accuracy is specified from 8% to 100% of range. DC Voltage Range Resolution Accuracy 400mV 0.1mV ± (1.0% + 5) 4V 0.001V ± (0.8% + 3) 40V 0.01V 400V 0.1V 600V 1V ± (1% + 5) Input Impedance: the range 400mV: >1000MΩ / the other ranges: 10MΩ Overload Protection: 600V DC/AC rms21 AC Voltage Range Resolution Accuracy 4V 0.001V ± (1.0% + 5) 40V 0.01V 400V 0.1V 600V 1V ± (1.2% + 5) Input Impedance: 10MΩ Frequency Range: 40Hz -400Hz Response: Average, calibrated in rms of sine wave Overload Protection: 600V DC/AC rms DC Current Range Resolution Accuracy 400µA 0.1µA ± (1.2% + 3) 4000µA 1µA 40mA 0.01mA ± (1.5% + 3) 400mA 0.1mA 4A 0.001A ± (1.8% + 3) 10A 0.01A ± (2.0% + 5) Overload Protection: Fuse 1: F 400mA/690V - Fuse 2: F 10A/690V Max. Input Current: 10A (For inputs > 2A: measurement duration < 10 secs, interval > 15 minutes) Max. Measurement Voltage Drop: 400mV Note: The 10A range is specified from 20% to 100% of range. AC Current Range Resolution Accuracy 400µA 0.1µA ± (1.5% + 5) 4000µA 1µA 40mA 0.01mA ± (1.8% + 5) 400mA 0.1mA 4A 0.001A ± (2.0% + 5) 10A 0.01A ± (2.5% + 10) Overload Protection: Fuse 1: F 400mA/690V Fuse 2: F 10A/690V Max. Input Current: 10A (For inputs > 2A: measurement duration < 10 secs, interval > 15 minutes) Frequency Range: 40Hz ~ 400Hz Response: Average, calibrated in rms of sine wave Max. Voltage Drop: 400mV Note: The 10A range is specified from 20% to 100% of range.22 Frequency Range Resolution Accuracy 9.999Hz 0.001Hz ± (1.0% + 3) 99.99Hz 0.01Hz ± (0.8% + 3) 999.9Hz 0.1Hz 9.999kHz 1Hz 99.99kHz 10kHz 999.9kHz 10kHz not specified Input Voltage: 1Vrms -20Vrms Duty Cycle Range Resolution Accuracy 5% ~ 99% 0.1% 1 Hz ~10kHz: ± (2% + 5) > 10kHz: not specified Input Voltage: 3Vp-p ~ 10Vp-p Overload Protection: 600V DC/AC rms Resistance Range Resolution Accuracy 400Ω 0.1Ω ± (1.0% + 5) 4kΩ 0.001kΩ ± (1.0% + 3) 40kΩ 0.01kΩ 400kΩ 0.1kΩ 4MΩ 0.001MΩ 40MΩ 0.01MΩ ± (1.8% + 5) Capacitance Range Resolution Accuracy 40nF 0.01nF ± (4%+20)(REL) 400nF 0.1nF ± (3%+5)(REL) 4µF 0.001µF ± (4% + 5) 40µF 0.01µF 100µF 0.1µF ± (8% + 5) For the ranges ≤ 400nF, use Relative mode (REL) to subtract the stray capacitance of the test leads and the Meter. For the range of 100µF, wait about 30 secs for the reading to settle.23 Diode Test Range Introduction Remark

The approximate forward voltage drop of the diode will be displayed. If the voltage drop is more than 2V, the display shows the overrange indicator "OL" Open Circuit Voltage: about 3V Short Circuit Current: < 0.9mA Continuity Test Range Introduction Remark The built-in buzzer will sound if the resistance is less than about 30Ω. The buzzer will not sound if the resistance is more than 150Ω Open Circuit Voltage: about 0.45V OPERATION INSTRUCTION Using Relative Mode Selecting Relative mode causes the meter to store the present reading as a reference for subsequent measurements and zero the display.

1. Press the REL button, the meter enters the Relative mode and stores

the present reading as a reference for subsequent measurements, and " " appears as an indicator. The display reads zero.

2. When you perform a new measurement, the display shows the

difference between the reference and the new measurement.

3. Press the REL button again, the meter exits the Relative mode.

Note: Relative mode is available only in voltage, current, capacitance and resistance measurements. Manual Ranging and Autoranging The meter defaults to autorange mode in measurement functions which have both autorange mode and manual range mode. When the meter is in autorange mode, "AUTORANGE" is displayed.

1. Press the RANGE button to enter the manual range mode, the

symbol "AUTORANGE" disappears. Each press of the RANGE button increases the range. When the highest range is reached, the meter wraps to the lowest range.

2. To exit the manual range mode, press and hold down the RANGE

button for about 2 seconds. The meter returns to the autorange mode and "AUTORANGE" is displayed. Data Hold Mode Press the HOLD button to hold the present reading on the display, the symbol " " will appear on the display as an indicator. To exit the Data Hold mode, just press the button again. " " disappears.24 Built-In Buzzer

1. When you press a button, the built-in buzzer will sound a beep if the

2. The buzzer will sound several short beeps about one minute before

the meter turns off automatically and sound long beep before the meter turns off automatically.

3. The buzzer will sound and the display will show "OL" in one of the

following conditions: a. The AC voltage under measurement is more than about 600V ac when the meter is in the highest AC voltage range. b. The DC voltage under measurement is more than about 600V dc when the meter is in the highest DC voltage range. c. The DC current under measurement is more than about 10A dc when the meter is in the highest DC current range. d. The AC current under measurement is more than about 10A ac when the meter is in the highest AC current range. Measuring DC or AC Voltage

1. Connect the black test lead to the "COM" terminal and the red test

lead to the " " terminal.

2. Set the range switch to the "

" position for dc voltage measurement or to the " " position for ac voltage measurement.

3. Select autorange mode or manual range mode with the "RANGE"

button. If you use manual range mode and don’t know the magnitude of the voltage to be measured beforehand, select the highest range and then reduce it range by range until satisfactory resolution is obtained.

4. Connect the test leads across the source or circuit to be measured.

5. Read the output on the display. For DC voltage measurements, the

polarity of red lead connection will be indicated as well. Note: To avoid electric shock to you or damages to the meter, never apply a voltage higher than 600V between the terminals. Measuring DC or AC Current

1. Connect the black test lead to the "COM" terminal. If the current to

be measured is less than 400mA, connect the red test lead to the "µA/ mA" terminal. If the current is between 400mA and 10A, connect the red test lead to the "10A" terminal instead.

2. Set the range switch to desired

3. Press the "S" button to select DC current or AC current

measurement, the display will show the corresponding symbol.

4. Turn off power to the circuit which you want to measure. Then

discharge all high voltage capacitors.

5. Break the circuit path to be measured, then connect the test leads in

series with the circuit.

6. Turn on power to the circuit, then read the display. For DC current

measurements, the polarity of the red test lead connection will be indicated as well. Note: If the magnitude of the current to be measured is not known beforehand, select the highest range and then reduce it range by25 range until satisfactory resolution is obtained. Measuring Resistance

1. Connect the black test lead to the "COM" terminal and the red test

lead to the " " terminal.

2. Set the range switch to Ω position.

3. Connect test leads across the object to be measured.

1. For measurements > 1MΩ, the meter may take a few seconds to

stabilize reading. This is normal for high resistance measurements.

2. When the input is not connected, i.e. at open circuit, "OL" will be

displayed as overrange indication.

3. Before measurement, disconnect all power to the circuit to be tested

and discharge all capacitors thoroughly. Continuity Test

1. Connect the black test lead to the "COM" terminal and the red test

lead to the " " terminal.

2. Set the range switch to "

" position, then press the "S" button until the symbol " " appears on the display.

3. Connect the test leads to the circuit to be measured.

4. If the circuit resistance is less than about 30Ω, the built-in buzzer will

sound. Note: Before test, disconnect all power to the circuit to be tested and discharge all capacitors thoroughly. Diode Test

1. Connect the black test lead to the "COM" terminal and the red test

lead to the " " terminal. (Note: The polarity of the red lead is positive "+")

2. Set the range switch to "

" position, then press the "S" button until the symbol " " appears on the display.

3. Connect the red test lead to the anode of the diode to be tested and

the black test lead to the cathode of the diode.

4. The display shows the approximate forward voltage drop of the

diode. If the connection is reversed, "O L" will be shown on the display. Measuring Capacitance

1. Connect the black test lead to the "COM" terminal and the red test

lead to the " " terminal.

1. Set the range switch to

4. Connect the test leads across the capacitor to be measured.

5. Wait until the reading is stable, then read the output on the display.

(For high capacitance measurements, it may take about 30 seconds for reading to stabilize.) Note: Before measurement, make sure that the capacitor to be measured has been discharged thoroughly.26 Measuring Frequency and Duty Cycle

1. Connect the black test lead to the "COM" terminal and the red test

lead to the " " terminal.

2. Set the range switch to Hz/% position. Then press the "Hz/%"

button to select frequency measurement or duty cycle measurement, the display will show the corresponding unit.

3. Connect the test leads across the source or load to be measured.

1. For frequency measurements, the voltage of the input signal must

be between 1V rms and 20Vrms.

2. For duty cycle measurements, the voltage of the input signal must

be between 3Vp-p and 10Vp-p. If the frequency of input signal is too low, the reading’s stability will decrease.

3. For both frequency and duty cycle measurements, if the voltage

exceeds the specified range, the error of reading may be out of the specified accuracy range. Automatic Power-off The display will blink and the meter will go into Sleep mode if you have not turned the rotary switch or pressed button for 15 minutes. To arouse the meter from Sleep, just press a button. To disable the automatic power-off feature, press and hold down a button while rotating the rotaryswitch from "OFF" position to other position. MAINTENANCE Warning Except replacing battery and fuse, never attempt to repair or service your meter unless you are qualified to do so and have the relevant calibration, performance test, and service instructions. General Maintenance Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or solvents. Dirt or moisture in the terminals can affect readings. Clean the terminals as follows:

1. Set the range switch to OFF position and remove the test leads from

2. Shake out any dirt which may exist in the terminals.

3. Soak a new swab with alcohol.

4. Work the swab around in each terminal.27

Replacing the Battery and Fuse Warning To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the low battery indicator (" ") appears. To prevent damage or injury, install only replacement fuses with the specified amperage, voltage, and interrupt ratings. Disconnect the test leads before opening the back cover or the battery cover. To replace the battery, remove the screws on the battery cover and remove the battery cover, replace the exhausted battery with a new battery of the same type (9V, 6F22 or equivalent). Reinstall the battery cover and the screws. This meter uses two fuses: To check Fuse 1:

1. Remove the screws on the back cover and remove the back cover.

2. Use another multimeter to check the continuity of the fuse.

1. Set the range switch to "

" position, then press the "S" button until the symbol " " appears on the display.

2. Connect the red test lead to the "

3. Insert the red test lead into the “10A” terminal. If a tone is sounded,

the fuse is good. Fuse 1: F 400mA/690V, Min. Interrupt Rating 20000A, Ø10X38mm Fuse 2: F 10A/690V, Min. Interrupt Rating 20000 A, Ø10X38mm To replace the fuse, remove the screws on the back cover and remove the back cover, replace the blown fuse with a new one of the same ratings. Reinstall the back cover and all the screws ACCESSORIES Manual: 1 piece Test Lead: 1 pair NOTE

1. This manual is subject to change without notice.

2. Our company will not take the responsibilities for any loss.

3. The contents of this manual can not be used as the reason to use

the meter for any special application.28

DISPOSAL OF THIS ARTICLE

WEGWERPEN VAN UW APPARAAT

12. Pulsante "HOLD "