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Triplett 310 Instruction Manual

Manual is about: type 9 hand-sized VOM

Summary of 310

  • Page 1

    Model 310 type 9 310-c type 9 (and3ized6/- )nstruction-anual triplett.

  • Page 3: Table of Contents

    1 table of contents safety rules ............................................... 2 introduction ...............................................8 specifications ............................................. 9 general instructions ................................ 11 test leads ...........................

  • Page 4: Safety Rule

    2 safety rule 3s warning this tester has been designed with your safety in mind. However, no design can completely protect against in- correct use. Electrical circuits can be dangerous and/ or lethal when lack of caution or poor safety practices are used. Warning this meter is not to be used to meas...

  • Page 5

    3 s$onotusethismeterwithitsbatterycoveropenitsrear caseopenorwithpartsremoved . S$onotopenthismeter f ormaintenancewithoutfirst disconnectingthetestleads f romallexternalcircuitr y. S2epairsandmaintenancemustonlybecarriedoutb y q uali f iedservicepersonnelorquali f iedelectricians / technicianswhokn...

  • Page 6

    4 s make sure both test leads are fully inserted into their respec- tive input jacks (black lead into com and red lead into 6s/s- ). A loose test lead may cause the user to misinter- pret the dangers present (the meter may read zero when dangerous voltage is present) or the loose lead may accidental...

  • Page 7

    5 s do not use the meter if it does not appear to work correctly on all ranges and in all modes. S do not use the meter if it has undergone long-term storage under unfavorable conditions. S do not use the meter if it may have been damaged in transport. S do not attempt immediate use of the meter whe...

  • Page 8: Read The Manual

    6 s do not mistake a downscale reading as an indication that no potential is present. Dangerous potentials may be present that may result in user injury. S when replacing the battery, dispose of the depleted battery in accordance with any prevailing safety or environmental regulations. S!S tatic cha...

  • Page 9: Do Not Touch

    7 do not touch do not touch exposed wiring, connections or other “live” parts of an electrical circuit. If in doubt, check the circuit first for voltage before touching it. Turn off the power to a circuit before connecting test probes to it. Be sure there is no voltage present be- fore you touch the...

  • Page 10: Introduction

    8 introduction the triplett model 310 and 310-c are hand-sized voms with all the versatility and performance of larger, more expensive bench-size models. They offer diode over- load protection against damage to the meter move- ments caused by accidental overloads. A fuse is used to protect the rx1 r...

  • Page 11: Specifications

    9 specifications dc volts ranges: 310: 0-3, 12, 60, 300, 1200 (20,000 ohms per volt) 310-c: 0-3, 12, 60, 300, 600, (20,000 ohms per volt) accuracy: ± 3% of full scale value ac volts ranges: 310: 0-3, 12, 60, 300, 1200 (5,000 ohms per volt) 310-c: 0-3, 12, 60, 300, 600 (15,000 ohms per volt) accuracy...

  • Page 12: Dc Milliamperes

    10 dc milliamperes ranges: 0-.6, 6, 60, 600 accuracy: ± 3% of full scale value approximate full scale current range voltage drop 0-.6, 6, 60 ma 250 mv 0-600 ma 330 mv meter 50 μ a - 250 mv (pivot and jewel) overload protection meter movement protected by diodes. Rx1 range protected by fuse. Voltage ...

  • Page 13: General Instructions

    11 general instructions control locations for a diagram of the model 310 / 310-c, please refer to page 14. Test leads check the test leads periodically. Leads that are worn, have damaged insulation, damaged plugs, damaged probes or loose parts should be replaced. The following section should be read...

  • Page 14: Scale Selection

    12 scale selection readings are taken on the scale having the appropri- ate significant figures (both 3 and 300 volts are read on the 0-300 scale) by multiplying or dividing by a factor of 10 or 100 as indicated by the range/scale ratio (i.E., on the 3 volt range, divide the scale read- ings by 100)...

  • Page 15: Other Considerations

    13 other considerations readings on the sensitive voltage, current and resis- tance ranges may sometimes be different than calcu- lated values. Thermo-electric or electro-chemical re- actions can sometimes generate voltage (and current) in a circuit due to elevated temperatures for solder- ing, cont...

  • Page 16: Control Location Diagram

    14 polarity reversing switch (310-c only) com v-o-m o ∞ acv 3 12 60 300 ohms adjust control ohms x 1 k x 1 0 0 x 1 0 x 1 3 12 60 dcv 300 ma .6 6 6 0 6 0 0 black test lead input jack dial scale indicator needle zero adjustment screw red test lead input jack range selector switch various range setting...

  • Page 17: Dc Voltage Measurements

    15 dc voltage measurements 0-3 through 0-300 volts: 1. Insert test leads in vom and com jacks. 2. Set range switch to appropriate dcv range. 3. Set polarity switch to desired polarity (310-c only) 4. Connect probes across circuit to be measured. 5. Energize circuit. 6. Read voltage on the black ac-d...

  • Page 18: Dc Voltage Measurements

    16 dc voltage measurements com v-o-m o ∞ 1200v dc safety first! 3 12 60 dcv 300 + ohms adjust control polarity reversing switch (310-c only).

  • Page 19: Ac Voltage Measurements

    17 ac voltage measurements 0-3 through 0-300 volts: 1. Insert test leads in vom and com jacks. 2. Set range switch to appropriate acv range. 3. Connect probes across circuit to be measured. 4. Energize circuit. 5. Read voltage on black ac-dc scale. 0-1200 volts: * 1. Insert test leads in com and 120...

  • Page 20: Ac Voltage Measurements

    18 ac voltage measurements com v-o-m o ∞ 1200v dc 1200v ac safety first! Acv 3 12 60 300 ohms adjust control polarity reversing switch (310-c only) set range to 300 acv.

  • Page 21: Resistance Measurements

    19 resistance measurements x1 through x1k ohms: 1. Insert test leads into vom and com jacks. 2. Set range switch to appropriate ohms range. 3. Short test probes together. 4. Adjust ohms adjust control until meter reads zero ohms. 5. Connect probes to component to be measured. 6. Read ohms on ohms sc...

  • Page 22: Resistance Measurements

    20 resistance measurements com v-o-m o ∞ 1200v dc 1200v ac ohms adjust control safety first! Ohms x 1 k x 1 0 0 x 1 0 x 1 polarity reversing switch (310-c only).

  • Page 23: Dc Current Measurements

    21 dc current measurements 0-.6 through 0-600 milliamperes: 1. Insert test leads into vom and com jacks. 2. Set range switch to appropriate ma range. 3. Set polarity switch to desired polarity (310-c only) 4. Connect the probes in series with the circuit (use alligator clips). 5. Turn circuit on. 6....

  • Page 24: Dc Current Measurements

    22 dc current measurements com v-o-m o ∞ safety first! + – load 1200v dc 1200v ac ma .6 6 6 0 6 0 0 ohms adjust control polarity reversing switch (310-c only).

  • Page 25: Safety First!

    23 com v-o-m o ∞ safety first! 600 Ω 1200v dc 1200v ac audio amplifier acv 3 12 60 300 ohms adjust control polarity reversing switch (310-c only) measuring output volts (db) to read output voltage use the same procedure as shown on page 17 for ac voltage and convert readings to db using the chart on...

  • Page 26: Measuring Output Volts (Db)

    24 measuring output volts (db) 6mw 600 Ω 6mw 500 Ω 1mw 600 Ω v o l t s 100 10 1 90 9 .9 80 8 .8 70 7 .7 60 6 .6 50 5 .5 40 4 .4 30 3 .3 20 2 .2 10 1 .1 1.89 1.73 .775 db –2 6 –6 +1 4 –2 4 –4 +1 6 –2 2 –2 +1 8 –2 0 0 +20 –18 +2 +22 –16 +4 +24 –14 +6 +26 –12 +8 +28 –10 +10 +30 –8 +12 +32 –6 +14 +34 –4...

  • Page 27: Operation

    25 operation chart to easure e m rang set switch to lead connections* black lead "com" red l ead listed below read on scale each scale div. Equals dc volts 0-3 0-1 2 0-6 0 0 - 300 0 - 600 (310-c) 0 - 1200 (310) dcv 3 dcv 1 2 dcv 6 0 dcv 300 dcv 3 dcv 3 vom vom vom vom 6 0 0vd c 1200 v d c 003 ÷ 001 ...

  • Page 28: Accessories

    26 accessories carrying cases: model 369: model 369-s: cat. No. 10-1258 cat. No. 10-1791 model 369-t cat. No. 10-1608 model 369-v: cat. No. 10-2959.

  • Page 29: Test Leads:

    27 test leads: 79-153: 42” test leads w/screw-on alligator clips 79-206: 48” test leads with alligator clips (no probes) 79-695: test leads with pin cushion clips 79-722: test leads with spike clips maintenance for model 310/310-c battery replacement if the pointer cannot be adjusted to full scale o...

  • Page 30: Calibration

    28 calibration with normal use, readjustment of this vom should not be necessary. An occasional check of the vom against a known reference voltage or another vom is good practice. If there is a question about the accu- racy of the vom, it should be returned to the factory or an authorized service ce...

  • Page 31

    29 triplett three year limited warranty triplett instruments warrants instruments and test equipment manufactured by it to be free from defective material or workmanship and agrees to repair or replace such products which, under normal use and service, disclose the defect to be the fault of our manu...

  • Page 34: Triplett

    Triplett test equipment & tools www.Triplett.Com 850 perimeter road, manchester, nh 03103 phone: 800-triplett fax: 603-622-2960