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17

Low Battery Indication

With a fresh battery installed, the battery icon   with four lines above it will 
be displayed in the lower right corner of the LCD. The lines will disappear 
as the battery is used. When the   icon appears alone in the display, the 
battery should be replaced.

Auto Power Off

The auto off feature will turn the meter off after 15 minutes. To disable the 
auto power off feature, hold down the MODE button and turn the meter 
on. “APO d” will appear in the display. Turn the meter off and then on 
agaivn to re-enable the auto power off feature. 

Maintenance

WARNING:  To avoid electric shock, disconnect the test leads from 

 

any source of voltage before removing the back cover or the battery  
or fuse covers.

WARNING: To avoid electric shock, do not operate your meter 

 

until the battery and fuse covers are in place and fastened securely.
This MultiMeter is designed to provide years of dependable service, 
if the following care instructions are performed:

1. Keep the meter dry. If it gets wet, wipe it off
2. Use and store the meter in normal temperatures.  

Temperature extremes can shorten the life of the electronic parts  
and distort or melt plastic parts

3. Handle the meter gently and carefully. Dropping it can damage the 

electronic parts or the case

4. Keep the meter clean. Wipe the case occasionally with a damp cloth. 

Do not use chemicals, cleaning solvents, or detergents

5. Use only fresh batteries of the recommended size and type. Remove 

old or weak batteries so they do not leak and damage the unit

6. If the meter is to be stored for a long period of time,  

the batteries should be removed to prevent damage to the unit

Summary of Contents for ST-9919

Page 1: ...reedinstruments www com Model ST 9919 TRMS Digital Multimeter Instruction Manual...

Page 2: ...Measurement 11 AC Current Measurement 12 Resistance Measurement 13 Continuity Check 13 Diode Test 13 Temperature Measurement 14 Capacitance Measurement 14 Frequency Measurement 14 4 20mA Measurement...

Page 3: ...ous voltages For maximum safety the meter and its test leads should not be handled when these terminals are energized Indicates that a instrument is protected throughout by double insulation or reinfo...

Page 4: ...per IEC 61010 2 USE EXTREME CAUTION when working with high voltages 3 DO NOT measure voltage if the voltage on the COM input jack exceeds 1000V ground 4 NEVER connect the meter leads across a voltage...

Page 5: ...IP67 dust and waterproof EN61010 1 Cat IV 600V Cat III 1000V Includes test leads and 9V battery Specifications Function Range Resolution Accuracy DC Voltage 400mV 0 01mV 0 06 reading 2 digits 4V 0 00...

Page 6: ...0M 0 001M 2 0 reading 10 digits Capacitance 40nF 0 001nF 3 5 reading 40 digits 400nF 0 01nF 4 F 0 0001 F 3 5 reading 10 digits 40 F 0 001 F 400 F 0 01 F 4000 F 0 1 F 5 reading 10 digits 40mF 0 001mF F...

Page 7: ...res peaks 1ms Temperature Sensor Requires type K thermocouple Input Impedance 10M VDC 3M VAC AC Response True RMS AC True RMS The term stands for Root Mean Square which represents the method of calcul...

Page 8: ...holster Size 7 36 x 3 2 x 2 0 187 x 81 x 50mm includes holster Safety This meter is intended for origin of installation use and protected against the users by double insulation per EN61010 1 and IEC6...

Page 9: ...6 amps cap m milli 10 3 volts amps A Amps k kilo 103 ohms F Farads capacitance M mega 106 ohms Ohms PEAK Peak Hold Hz Hertz frequency V Volts Percent duty ratio REL Relative AC Alternating current AUT...

Page 10: ...to the negative COM jack Insert the red test lead banana plug into the positive V jack 3 Touch the black test probe tip to the negative side of the circuit Touch the red test probe tip to the positive...

Page 11: ...nsert the black test lead banana plug into the negative COM jack 2 For current measurements up to 4000 A DC set the function switch to the yellow A position and insert the red test lead banana plug in...

Page 12: ...A mA jack 4 For current measurements up to 20A AC set the function switch to the yellow 10A HZ position and insert the red test lead banana plug into the 10A jack 5 Press the MODE button to indicate A...

Page 13: ...inuity on circuits or wires that have voltage on them 1 Set the function switch to the green CAP position 2 Insert the black lead banana plug into the negative COM jack Insert the red test lead banana...

Page 14: ...shock disconnect power to the unit under test and discharge all capacitors before taking any capacitance measurements Remove the batteries and unplug the line cords 1 Set the rotary function switch t...

Page 15: ...ng 1 Press the RANGE key The AUTO display indicator will turn off 2 Press the RANGE key to step through the available ranges until you select the range you want 3 To exit the Manual Ranging mode and r...

Page 16: ...s the REL button to exit the relative mode Display Backlight Press the HOLD key for 1 second to turn the backlight on The backlight will automatically turn off after 10 seconds Hold The hold function...

Page 17: ...r fuse covers WARNING To avoid electric shock do not operate your meter until the battery and fuse covers are in place and fastened securely This MultiMeter is designed to provide years of dependable...

Page 18: ...er by removing two screws B using a Phillips head screwdriver 3 Insert the battery into battery holder observing the correct polarity 4 Put the battery cover back in place Secure with the screws WARNI...

Page 19: ...cover 5 Gently remove the old fuse and install the new fuse into the holder 6 Always use a fuse of the proper size and value 0 5A 1000V fast blow for the 400mA range SIBA 70 172 40 10A 1000V fast blow...

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