Innova 3320 Multimeter Instruction Manual
Innova 3320 Multimeter
Innova 3320 Multimeter Instructions
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Innova 3320 Multimeter Specifications
| Feature | Specification |
|---|---|
| Model | Innova 3320 Digital Multimeter |
| Manufacturer | Innova Electronics Corp., Irvine, CA |
| Display | 3-½ digit LCD, maximum reading 2000 |
| Indicator LEDs | 3 LEDs: green, yellow and red (battery test) |
| Auto Ranging | ACV, DCV, Ohms, AC mA and DC mA |
| Polarity Indication | Automatic negative (-) polarity indication |
| Zero Adjustment | Automatic |
| Over Range Indicator | "OL" on LCD (except 10 A function) |
| Low Battery Indicator | Battery symbol on LCD |
| Automatic Power Off | After 15 idle minutes |
| DC Voltage Ranges | 200.0 mV, 2.000 V, 20.00 V, 200.0 V, 600 V |
| DC Voltage Resolution | 0.1 mV, 1 mV, 10 mV, 100 mV, 1 V |
| DC Voltage Accuracy | ±(0.8% of reading + 5 digits) |
| AC Voltage Ranges | 2.000 V, 20.00 V, 200.0 V, 600 V |
| AC Voltage Resolution | 1 mV, 10 mV, 100 mV, 1 V |
| AC Voltage Accuracy | ±(1.2% of reading + 5 digits) |
| AC Voltage Frequency Response | 50 Hz to 400 Hz |
| Voltage Input Resistance | 10 MΩ |
| Voltage Overload Protection | 600 V DC or 600 V AC RMS |
| Maximum COM Terminal Potential to Ground | 300 V AC/DC |
| Resistance Ranges | 200.0 Ω, 2.000 kΩ, 20.00 kΩ, 200.0 kΩ, 2.000 MΩ, 20.00 MΩ |
| Resistance Resolution | 100 mΩ, 1 Ω, 10 Ω, 100 Ω, 1 kΩ, 10 kΩ |
| Resistance Accuracy (200 Ω to 2 MΩ) | ±(1.0% of reading + 5 digits) |
| Resistance Accuracy (20 MΩ) | ±(2.0% of reading + 5 digits) |
| Resistance Overload Protection | 250 V DC or AC RMS |
| DC Current Ranges | 20.00 mA, 200.0 mA, 2.000 A, 10.00 A |
| DC Current Resolution | 10 μA, 100 μA, 1 mA, 10 mA |
| DC Current Accuracy (20 mA / 200 mA) | ±(1.0% of reading + 5 digits) |
| DC Current Accuracy (2 A / 10 A) | ±(2.0% of reading + 5 digits) |
| AC Current Ranges | 20.00 mA, 200.0 mA |
| AC Current Resolution | 10 μA, 100 μA |
| AC Current Accuracy | ±(1.5% of reading + 5 digits) |
| mA Overload Protection | Fuse 315 mA/250 V |
| Current Input Voltage Drop | < 0.2 V |
| 10 A Range Protection | Unfused; 15 seconds maximum, 15 minutes rest between tests |
| Battery Test Ranges | 1.5 V, 6 V, 9 V, 12 V |
| Battery Test Resolution | 0.001 V (1.5 V); 0.01 V (6 V, 9 V, 12 V) |
| Battery Test Load Current | 1.5 V: 10 mA; 6 V: 100 mA; 9 V: 10 mA; 12 V: 200 mA (approx.) |
| Battery Test Accuracy | ±(5% of reading + 5 digits) |
| 1.5 V Battery LED Thresholds | Green: 1.30 V and up; Yellow: 0.94 V to 1.29 V; Red: 0.15 V to 0.93 V (±0.075 V) |
| 6 V Battery LED Thresholds | Green: 5.22 V and up; Yellow: 3.76 V to 5.21 V; Red: 0.6 V to 3.75 V (±0.3 V) |
| 9 V Battery LED Thresholds | Green: 7.83 V and up; Yellow: 5.64 V to 7.82 V; Red: 0.9 V to 5.63 V (±0.45 V) |
| 12 V Battery LED Thresholds | Green: 10.44 V and up; Yellow: 7.52 V to 10.43 V; Red: 1.2 V to 7.51 V (±0.6 V) |
| Diode Test | 2 V range, 1 mV resolution, test current 1 ±0.6 mA, test voltage approx. 1.5 V |
| Continuity Test | 200 Ω range, 0.1 Ω resolution, beeper sounds at approx. 120 Ω or less |
| Diode/Continuity Overload Protection | 250 V DC or AC RMS |
| Measurement Category | CAT II |
| Pollution Degree | 2 |
| Operating Temperature | 32 °F to 104 °F (0 °C to 40 °C) |
| Operating Humidity | Less than 80% RH (non-condensing) |
| Operating Altitude | Up to 6562 ft (2000 m) |
| Storage Temperature | -4 °F to 140 °F (-20 °C to 60 °C) |
| Storage Humidity | Less than 90% RH (non-condensing) |
| Power Supply | Two 1.5 V AA alkaline batteries |
| Fuse | 0.315 A/250 V, 5x20 mm, Bussmann GMA type (Radio Shack #270-1046) |
| Dimensions (H x W x D) | 5.50 x 3.50 x 1.25 in. (139 x 89 x 32 mm) |
| Weight (with batteries) | Approx. 6.3 oz (180 g) |
| Warranty | 1 year limited, original purchaser |
Innova 3320 Multimeter Details
The Innova 3320 is a general-purpose digital multimeter for household electrical work, general electronics, hobby projects and automotive electrical systems. It is designed to find electrical problems quickly. One Function/Range Selector Switch sets every mode: DCV, ACV, resistance, ACmA, DCmA, DC10A, diode, continuity, the four battery test ranges and OFF. Before measuring anything, the manual recommends checking the meter on a known source with a known value.
The front panel has three input jacks. The COM jack takes the black lead for every test. The shared red-lead jack covers Volts, mA, Ohms, BAT, Diode and Continuity. A separate DC10A jack is used only for high DC current. Always set the selector before you connect the leads. If you need to change the function during a test, take the leads off the circuit first.
To measure voltage, put the red lead on the positive side and the black lead on the negative side, across the source or load. Resistance must be measured only on de-energized circuits. For an accurate reading, disconnect at least one side of the component from the circuit. Polarity does not matter for resistance.
In diode mode, you measure the component in both directions. A good silicon diode shows a forward drop of about 0.5 to 0.8 V, and a germanium diode shows about 0.3 V. In the reverse direction, the display should show OL. In continuity mode, the beeper sounds when the resistance is low, so you can check wires without looking at the display.
Current is measured by opening the circuit and connecting the meter in series. Power the circuit down, disconnect one wire, place the leads, then power it up again. Use the mA ranges up to 200 mA and the DC10A range from 200 mA to 10 A. If the reading is negative, reverse the leads. When you finish, turn the power off before you remove the leads.
The battery tester puts a load on the battery and lights a colored LED: green means good, yellow means questionable and red means discharged. If a battery is below 10% of its rated voltage, no LED lights. The LED thresholds are averages for the most common devices, because battery life depends on how much current the device draws.
The safety guidance is extensive. Be careful above 30 V AC rms, 42 V peak or 60 V DC. Use one hand when possible and set the meter on an insulating surface. For vehicle work, the manual calls for ventilation, eye protection, blocked wheels and the ignition turned off. Readings may become unstable near spark plug wires, ignition coils or alternators, so keep the meter away from them.
Maintenance is minimal. The only user-replaceable parts are the batteries, the fuse and the test leads. To reach the batteries and fuse, remove two screws on the back. Never take apart the front panel or the circuit board. Clean the case with a damp cloth, not solvents. Warranty service goes through Innova's Technical Service Center in Irvine, California, and requires a Return Reference Number.
Frequently Asked Questions (FAQs)
Can't find the answer you need? Here are some frequently asked questions about the Innova 3320 Multimeter, and we answer them below.
