HSP5 3-09 manual.qxp - Test Equipment Depot
Contents
1. 1 milliwatt in a 600 ohm impedance equivalent to 0 775 volts across 600 ohms 9 Battery and Fuse Replacement 1 Remove the screw in the back cover of the meter and carefully separate the back cover from the front 2 Note the polarity of the battery when removing it from its compartment and replace 3 Use F200mA 250V replacement fuses GB model GF 0306 4 Carefully replace the back cover and tighten the screw Do not overtighten as this may strip the threads in the meter housing 10 Warranty 1 YEAR WARRANTY limited solely to repair or replacement no warranty of merchantability or fitness for a particular purpose Product is warrantied to be free of defects in materials and workmanship for the normal life of the product In no event shall Gardner Bender be liable for incidental or One ena damage i This marking indicates that this the EU To prevent possible harm to responsibly to promote the sustainable reuse systems or contact the retailer where the 11 Correct Disposal of this product product should not be disposed with other household wastes throughout Mmmm the environment or human health from uncontrolled waste disposal recycle it of material resources To return your used device please use the return and collection product was purchased They can take this product for environmental safe recycling 16 abs ar2. be used for a week or more remove the internal battery to avoid potential leaks that may damage the unit 3 1 Preliminary Adjustments Fully seat the test leads in the correct input jacks If necessary using a small flat tip screwdriver slowly turn the mechanical zero 6 dh LY HSP5 3 09 manual gqxp 5 8 09 adjustment screw clockwise or counterclock wise until the needle indicator is directly over the three black zeros at the left end of the scale Analog Meter Reading the Scale Resistance 5 ik ae Ohms Scale 150 DC Voltage 8 amp Milliamps Scale Common Markings for both the AC amp DC Voltage Scales Te ok ul a a g 12 NS Tiz He 8 og S 18 OdB 1mW 6009 AC Voltage Scale dB Scale for Transistor Gain Measurement General The first step in reading the analog scale is to align the needle with the scale Resistance Ohms Q Use the top scale for reading the resistance If the meter is set to X1k multiply the resistance value by 10000 DC Voltage V DC Use the middle scale Match the dial setting to the highest number on the scale AC Voltage V AC Use the same numbers and procedures as used for the DC voltage setting but use the scale directly below the numbers DC Milliamps Use the same scale and procedure as used for the DC voltage setting 7 Page 8 7 9 57 AM ra Decibel Gain dB see pg 15 Use the scale marked dB to read
3. Page 1 HSP5 3 09 manual gpp 5 8 09 9 57 AM ar SPERRY INSTRUMENTS Analog Multimeter Owners Manual e Read this owners manual thoroughly before use and save HSP5 99 Washington Street Melrose MA 02176 Phone 781 665 1400 1 800 517 8431 Toll Free 1 800 517 8431 dh LY HSP5 3 09 manual gxp 5 8 09 9 57 AM Page 2 ae 8 9 Contents Introduction 1 1 Meter Functions Specifications 2 1 For Your Safety Operating Suggestions 3 1 Preliminary Adjustments 3 2 Internal Battery Condition DC Voltage Measurement 4 1 Household Batteries DC Milliamp Measurement AC Voltage Measurement 6 1 Wall Receptacles Resistance Continuity Measurement 7 1 Extension Cords 7 2 Fuses 7 3 Switches Decibel Measurement Transistor Gain Battery and Fuse Replacement 10 Warranty 11 Disposal 1 Introduction The GMT 312 is an Analog Multimeter capable of measuring 5 functions on 12 ranges Small lightweight and rugged con struction This meter was designed for the homeowner hobbyist and professional needing to make electrical and electronic equipment measurements 1 1 Meter Functions Needle Analog echanical p Ana log Multime iene OFF Function Range Selector Switch Zero Ohms Adjust ment Figure 1 2 dh LY HSP5 3 09 manual qxp 2 Specifications Ranges DC Voltage AC Vo
4. TION or REINFORCED INSULATION Measurement category Il is for measurements performed on circuits directly connected to the low voltage installation Examples are measurements on household appliances portable tools and similar equipment 1 Use extreme caution when checking electrical circuits 2 Do not stand in wet or damp work areas when working with electricity Wear rubber soled boots or shoes 3 Do not apply more voltage 4 oD dh LY HSP5 3 09 manual gxp 5 8 09 9 57 AM Page 6 ar or current than the set range of the multimeter will allow 4 AWARNING Do not touch the metal probes of the test leads when making a measurement 5 Replace worn test leads Do not use test leads with broken or tattered insulation Only test leads meeting ETL cETL CAT Il 300V IA O can be used in this multimeter 6 Discharge a capacitor before measuring it 7 Remove the test leads from the circuit being measured as soon as the test is completed 8 AAWARNING Do not measure voltage when the function range switch is set on the resistance ohms or the current mA settings Never measure current when the meter is set on the resistance range Never measure AC voltage when the meter is set on DC voltage or DCmA Setting the meter on the incorrect function may burn out some of the internal circuitry and may pose a Safety hazard 3 Operating Suggestions 1 Set the function range switch to the proper positi
5. a guide to reading DC voltage measurements DC V Read range following setting scale 10 0 10 50 0 50 150 0 150 300 0 300 4 1 Household Batteries Set the function range switch to 10V DC to test household 1 5 volt through 9 volt batteries Touch the red test lead to the terminal and the black test lead to the terminal of the battery Read the 0 10 scale to determine the condition of the battery zane 5 DC Milliamp Measurement 1 Fully seat the test leads in the correct input jacks black lead red lead 2 Set the function range switch to the appropriate DCmA setting 3 Touch the test leads to the circuit in series in line with the circuit so that the circuit current passes through the multimeter in order to make the measurement If the needle indicator deflects to the left reverse the test leads DC mA Read and range following multiply setting scale reading by 0 5 0 50 0 01 50 0 50 1 150 0 150 1 9 Common DC Milliamperage Measurements It is important to point out that milliamps can also be expressed as thousandths of an Ampere therefore 150 milliamps is 150 thousandths of one Amp The 150mA function of your multimeter is commonly used by electronics repair technicians and hobbyists to troubleshoot various low voltage circuits Although not normally used for electrical troubleshooting around the home this function can be used to measure the milliamperage draw of household ite
6. decibels for transistor gain Use the chart at the right of the scale for proper conversion 3 2 Internal Battery Condition Before making resistance or continuity tests check the condition of the internal battery First turn the function range switch to the ohms Rx1K position Short the test leads together and the needle indicator should deflect to the right side of the scale Keep the test leads shorted together while simultaneously turning the zero ohms adjustment dial until the needle indicator reads zero at the right side of the ohms green scale If the needle will not Zero replace the battery with a new 1 5 volt AA size non rechargeable battery see Battery Replacement 4 DC Voltage Measurement 1 Fully seat the test leads in the correct input jacks black lead red lead 2 Set the function range switch to the appropriate DC voltage range If the voltage is unknown use the highest range If the voltage applied falls within the range of a lower setting reset the function range switch to the appropriate setting for greater accuracy 3 If the polarity of the circuit to be tested is known touch the black test lead to the neutral side If the polarity is unknown touch the test leads to opposite sides of the circuit If the needle indicator deflects to the left of the scale reverse the test leads 8 dh LY oD HSP5 3 09 manual gxp 5 8 09 9 57 AM Page 10 ae Use the chart below as
7. e following conditions Indoor Use Altitude Pollution degree Ingress Protection Degree Important up to 2000m 2 IP20 Read this operators manual thoroughly before using this multimeter This manual is intended to provide basic information regarding this multimeter and to describe common test procedures which can be made with this unit Many types of appliance machinery and other electrical circuit measurements are not addressed in this manual and should be handled by experienced service technicians L AAWARNING Use extreme caution when using this multimeter Improper use of this meter can result in severe damage to property severe personal injury or death Follow all instructions and suggestions in this operators manual as well as normal electrical safety precautions Do not use this multimeter if you are unfamiliar with electrical circuits and proper test procedures 2 1 For Your Safety The marking A on the multimeter represents Caution risk of electric shock The marking A on the multimeter represents Caution risk of danger important information refer to the manual In order to find out the nature of the potential HAZARD and any actions which have to be taken consult the manual in all cases where 4 is marked The marking on the multimeter represents Functional earth terminal The marking Gj on the multimeter represents Equipment protected throughout by DOUBLE INSULA
8. ltage DC Current Milliamperes Resistance Ohms Decibels Accuracy Sensitivity Function Range Switch Zero Ohms Adjustment Dial Mechanical Zero Adjustment Screw Recessed Input Jacks Fuse Type Power Source Test Lead Type Size L X W X H Weight Agency Approvals Operating Temperature Note 5 8 09 M Page 4 9 57 AM 12 measuring ranges 10 50 150 300 Volts 10 50 150 300 Volts 0 5 50 150mA Rx1K resistance indicated multiplied by 1000 1 Megohm max 20dB to 56dB on AC voltage ranges DC voltage mA 4 full scale of range AC voltage 5 full scale of range Resistance 4 arc of scale length 2000 ohms per volt DC and AC 5 functions 13 positions 12 measuring ranges Located on the left side of the housing adjustment dial is used to zero the needle indicator on the ohms scale while shorting the test leads together Located directly below the center of the meter scale adjust needle indicator to read zero at the left side of the scale before taking any measurement Negative input jack for black test lead positive input jack for red test lead F200mA H 250V GB GF 0306 One 1 5V AA size non rechargeable battery ETL cETL CATII 300V 1A approx 93mm X 62mm X 32mm approx 117g including battery ETL cETL CATII 300V 0 64F 77F 18 C 25 C Accuracy is given for one year at 23 C 2 RH lt 60 This multimeter was designed to be safe at least under th
9. ms such as flashlights and other battery operated devices that do not draw more than 150 mA In fig 2 the red test lead is hooked up to the terminal of the lantern battery while the black test lead is hooked up to the bulb The meter will indicate the milliamperage draw when the flashlight TaS switch is thrown in the ON position Figure 2 WARNING Do not apply voltage to the test leads while the meter is set in the milliamp range See 8 For Your Safety 6 AC Voltage Measurement 1 Fully seat the test leads in the correct input jacks black lead red lead 2 Set the function range switch to the 10 dh LY oO HSP5 3 09 manual qxp 5 8 09 9 57 AM Page 12 appropriate AC voltage range If the voltage is unknown use the highest range If the voltage applied falls within the range of a lower setting reset the function range switch to the appropriate setting for greater accuracy 3 Touch the test leads to the circuit under test With AC voltage the polarity of the test leads is not a factor Use the chart below as a guide to reading AC voltage measurements AC V Read range following setting scale 10 0 10 50 0 50 150 0 150 300 0 300 Common AC Voltage Measurements 6 1 Wall Receptacles If the receptacle is controlled by a switch make sure the switch is ON Set the function range switch to 150V AC Touch the test leads to the hot and neutral
10. on before making a measurement When the voltage or current is not known it MUST be determined that the capacity of the selected range will handle the amount of voltage or current in the circuit see 3 under For Your Safety Always start with the highest range in the function If the reading falls within the range of a lower setting reset the function range switch to 5 the appropriate setting for greater accuracy 2 Avoid placing the meter in areas where vibration dust or dirt are present Do not store the meter in excessively hot humid or damp places This meter is a sensitive measuring device and should be treated with the same regard as other electrical and electronic devices 3 Using the meter in areas with high magnetic fields can result in inaccurate readings For greatest accuracy lay the meter flat ona non metallic surface 4 When the meter is not in use keep the function range switch in the OFF position This keeps the needle indicator from deflecting or bouncing excessively 5 When disconnecting the test leads from the unit always grasp the leads where the input jacks meet the meter housing Never pull the leads out of the jacks by the insulated wire or transport the meter using the test leads as a carrying strap 6 Never immerse the meter in water or solvents To clean the housing use a damp cloth with a minimal amount of mild soap 7 If the resistance ohms function of the meter is not going to
11. s will result in inaccurate readings Continuity tests are probably the most frequently performed electrical troubleshooting procedures 12 dh LY HSP5 3 09 manual gxp 5 8 09 9 57 AM Page 14 ae around the home ALWAYS REMEMBER THAT CONTINUITY CHECKS ARE TO BE MADE WITH THE POWER TO THE CIRCUIT TURNED OFF Polarity of the test leads is not a factor in making continuity checks 7 1 Extension Cords Unplug the cord Set the function range switch to the Rx1K position Touch one of the test leads to one of the metal prong ends of the cord and insert the other test lead in either one of the receptacle slots on the other end of the cord making sure the test lead is making good contact with the receptacle see fig 4 If the needle indicator does not move to 0 ohms insert the test lead into the other receptacle slot again making sure of good contact If the needle indicator still does not move the cord has a break and should be replaced Figure 4 7 2 Fuses Note With the power OFF always remove a fuse from its socket before testing it With cartridge fuses touch the test leads to each end of the fuse see fig 5 If the fuse is good the needle indicator will move to 0 ohms If not replace the fuse On plug type fuses touch the the test leads on the bottom contact and the other on the threaded metal contact see fig 6 13 Figure 5 ANS 7 3 Switches Cut off the power source to
12. slots of the receptacle see fig 3A The needle indicator should read 120V AC on the 0 150 scale To test for proper grounding of the receptacle touch one test lead to the hot narrow side of the receptacle and the other test lead to the ground slot The meter should read 120V AC as before 11 ae a Figure 3 GS 7 Resistance Continuity Measurement For resistance and continuity testing POWER MUST BE OFF 1 Fully seat the test leads in the input jacks black lead red lead 2 Set the function range switch to the Rx1K position resistance indicated multiplied by 1000 and short the test leads together Using the zero ohms adjustment dial slowly turn the dial until the needle indicator reads 0 ohms at the right end of the ohms scale If the needle will not zero replace the internal battery with a new 1 5 volt AA size non rechargeable battery see Battery Replacement 3 Touch the test leads to the resistance or non energized circuit to be measured Measure the value of the reading on the green ohms scale and multiply the reading by 1000 If you re making basic continuity tests the needle indicator should move all the way to the right side of the ohms scale if continuity exists Note When switching the unit back and forth from ohms to other functions always zero the needle indicator before taking another reading Failure to zero the needle before taking resistance continuity measurement
13. the switch If necessary remove the switch Turn the switch to the ON position and touch the test leads to the switch terminals see fig 7 If the switch is good the needle indicator will move to 0 ohms If not replace the switch On other switches such as three way light switches or double pole double throw ON OFF ON switches each ON position will need to be tested Alternate the test leads between the switch terminals to determine which two terminals control that ON position Figure 6 oD Figure 7 8 Decibel Measurement The decibel feature of this multimeter is for transistor gain measurement in electronic cir cuits and should not be confused with audio decibels This function is used primarily by elec tronics technicians to measure the power gain in transistors and is rarely encountered in home project applications 14 dh LY HSP5 3 09 manual gxp 5 8 09 9 57 AM Page 16 ar 1 Fully seat the test leads in the correct input jacks black lead red lead 2 Set the function range switch to any one of the AC voltage ranges and read the decibel measurement on the bottom red scale of the faceplate Based on the AC voltage range you selected you will need to compute the actual measurement by using the decibel conversion chart located at the bottom right of the faceplate Important For absolute decibel measurements circuit impedance must be at least 600 ohms 0 decibels
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