Auto-Ranging DMM #3320 $34.99. The Innova 3320 Auto-Ranging DMM eliminates the need to dial in the correct range when making electronic measurements. Its uses include automotive circuits, breakers, wiring, vehicle battery & charging systems, electrical components and more. Table of contents i title page no. Introduction 1 safety precautions / warnings 2 controls and indicators 4 preparation and caution before use 5 testing procedures 6 a. Ac/dc voltage measurement 6 b. Resistance measurement w (ohms) 6 c. Diode test 7 d. Continuity test 8 e. Ac/dc current measurement (amps) 8.
One of the most common test equipment being used today is the digital multimeter, or the DMM. This equipment is able to provide excellent readings of the basic measurements of amps, volts and ohms. These digital multimeters use digital and logic technology. The use of integrated circuits enables many new test features to be embedded. DMM’s are able to offer as standard the basic measurements that includes:
- Current (DC)
- Current (AC)
- Voltage (DC)
- Voltage (AC)
- Resistance
Most DMM’s are also able to offer additional test capabilities that include:
- Capacitance
- Temperature
- Frequency
- Transistor test
- Continuity (buzzer)
You need to look at the parameters and specifications when you choose a digital multimeter. Consider the measurements that can be made, the ranges, number of digits in the display as well as the mechanical details. The accuracy of a digital multimeter also requires careful consideration.
Digital multimeter offers several electronic measurement task in one tool. How convenient that is! Other terms for this is voltmeter or Ohm meter or Volt Ohm meter. The new improved integrated circuits of digital multimeter are more efficient, faster, and works with a large accuracy. Make sure that the digital multimeter you’ll buy has continuity and is packed with smart features, has the ability to log and graph data and also troubleshooting.
A digital multimeter has only three parts. These are the Display Screen. Selection Knob and Ports. The Display Screen is for better visualization. It has a 5-digit display screen. One for the sign value, and the other 4 for the number representation. The Selection Knob allows the user to choose the different jobs performed by the multimeter. There are actually two ports located in front of the unit. These are the maVΩ and the COM port. The maVΩ port allows the measurement of all the three units: current up to 200 mA, voltage and resistance. Red probe is plugged into this port. The COM port means common and black probe is plugged into this port. The particular 10A port is used to measure large current in the circuit.
Auto range is one of the features which is very useful and should be in a multimeter. It enables the multimeter to change its internal range according to the requirement to detect the correct voltage, current, or resistance of the circuit. It prevents overloading if the meter is in volt range. A Back-lit LCD is also very fancy and very useful especially if you are in a dark place. Auto-off is also a great feature. It tends to help those users who easily forget to turn the meter off when not in use. And using decent probes than lead is better because they make work easier and easy to replace if get damaged. Auto polarity is also an important feature because it lets you know the polarity of the current. Whether the voltage of the current being measured shows positive reading, or negative reading.
Here is the list of some of the best digital multimeter you’ll find on Amazon:
- Tacklife DM02A Digital Multimeter Auto-Ranging Multi Tester with Non Contact Voltage Test Volt Amp Ohm Meter with Diode and Continuity Test
- KET Multimeter – Digital Multimeter LED Display Screen Provides Accurate, Reliable Results – Clamp Multimeter with Back-Lighted Key – Completely Safe and Easy to Use, Durable Design
- INNOVA 3320 Auto-Ranging Digital Multimeter
- Craftsman 34-82141 Digital Multimeter with 8 Functions and 20 Ranges
- Digital Multimeter, Crenova MS8233D Auto-Ranging Digital Multimeters Electronic Measuring Instrument AC Voltage Detector Portable Amp / Ohm / Volt Test Meter Multi Tester w/ Diode and Continuity Test Scanners Home Use Electronic DIY Hand Tools with Backlight LCD Display, Orange
- AstroAI Digital Multimeter with Ohm Volt Amp and Diode Test
- ELIKE T-92 Self-Recovery Digital Multimeter Amp/Ohm/Volt with Diode,Continuity, Capacitance,hFE,IR Detector and Livewire Identification
- Fluke 115 Compact True-RMS Digital Multimeter
- DMiotech Digital Multimeter Multi Tester AC / DC Voltage Current Temperature Test Resistance Continuity Diode Transistor hFE Meter with LCD Display Smart-A
- Etekcity MSR-R500 Digital Multimeter, Volt Amp Ohm Meter with Diode and Continuity Test, Red
1) Tacklife DM02A Digital Multimeter Auto-Ranging Multi Tester with Non-Contact Voltage Test Volt Amp Ohm Meter with Diode and Continuity Test
This product is a non-contact voltage test. It has a built-in sensor that will light and buzz if the detection of voltage is greater than 90V (RMS). It has an overload protection and continuity. It has a PTC protection circuit for resistance, temperature, and frequency measurement. If the resistance measure less than 100Ω, the buzzer will again sound.
This device has also an auto range and auto power off. It accurately measures AC/DC voltage, current, frequency, resistance, capacitance, and diode. It is a 2000 auto range multimeter test.
It also has a low battery indicator and a back-lit LCD screen. The 3 ½ digit LCD is very useful for it displays for visibility in dimly lit areas. It has a low battery indicator so you never accidentally run out of juice.
Included in this package are:
- 1 Tacklife DM02A Digital Multimeter
- 1 9V battery
- 1 User’s Manual
- 1 Test Lead
- 24 Month Warranty
TAKE NOTE!
Do not attempt to measure voltage higher than DC/AC 100v to avoid harms and damage to the meter from electric shock. The detection operation may be affected by socket design, insulation thickness and other types of different factors. And then check the meter’s fuses before measuring current and turn off power before connecting the meter to the circuit.
2) KET Multimeter – Digital Multimeter LED Display Screen Provides Accurate, Reliable Results – Clamp Multimeter with Back-Lighted Key – Completely Safe and Easy to Use, Durable Design
You can use this multimeter anywhere you like. You can safely tackle any electrical problem around your home. You can already test voltage, current or resistance without having to strip cords or break circuits. Great for automotive support with AC/DC voltage up to 600v.
This product has incredible accuracy. It is specially designed to provide highly accurate readings. It also has a large, easy-to-read multimeter LCD screen, making it perfect for professionals and hobbyists alike.
It has a complete full set of features so you don’t have to be an electrician or a professional to use this automotive multimeter. It is just very simple to use. The convenient data hold key, back-lighted key, easy access trigger, and input socket all come together in one.
This digital meter is crafted with durable, high quality plastic to provide protection against accident drops. The strong and stable texture of the material offers a long working life.
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Satisfaction is our top priority at KET, so you don’t like this multimeter, you can return it for a full refund using our 3 month warranty.
This is one tool you can always depend on whether you’re at home, or on-the-go.
3) INNOVA 3320 Auto-Ranging Digital Multimeter
The Innova 3320 is an auto ranging multimeter. It is specially designed to safely and accurately troubleshoot automotive and household electrical problems. It has an auto ranging scales that help eliminate the need to dial in the correct range when making electronic measurements.
There is a MegOhm input that is safe to use for automotive and household uses just like household outlets, fuses, wirings, general-purpose batteries, vehicle batteries and charging system, automotive circuits and more.
It features a large digital display and color coded LEDs that allows you to quickly check household batteries. The green color indicates that the battery is still good. The yellow one indicates that the battery is already weak and the red color tells you that you should replace your battery already.
It has a single setting resistance function for AC and DC voltage. It includes attachable test leads, holders and stand for hand free use. It also features protective rubber corner guards for protection against drop accidents.
4) Craftsman 34-82141 Digital Multimeter with 8 Functions and 20 Ranges
The Craftsman 34-82141 Digital Multimeter measures up to 600 volts alternating current and 10A alternating current for electrical installation home appliance repairs. It also measures up to 600 volts direct current and 10A direct current for auto marine and electronic installations or repairs.
It has audible tone sounds below 30 ohms to check proper wiring and shorts. Its resistance is up to 2 ohm for household and auto electrical wiring and repair.
This multimeter has a large 2000 count Liquid Crystal Display, diode test and continuity beeper. It includes a 1.5 and 9 volt battery test.
This digital multimeter is crafted with 8 functions and 18 rangers.
5) Digital Multimeter, Crenova MS8233D Auto-Ranging Digital Multimeters Electronic Measuring Instrument AC Voltage Detector Portable Amp / Ohm / 1. Volt Test Meter Multi Tester w/ Diode and Continuity Test Scanners Home Use Electronic DIY Hand Tools with Backlight LCD Display, Orange
The Crenova MS8233D Digital Multimeter has an over load PTC protection for resistance and frequency measurement. It has a 3 ½ LCD display with backlight that makes the reading clear especially in dark areas. It can measure AC/DC voltage, AC/DC current, resistance, frequency, continuity, diode, and etc. it has a function of data hold, maximum value hold and function switching. It features an automatic power off. If the meter is not in use, it automatically turns off after 15 idle minutes. Pushing any of the push button or changing the rotary switch can turn on the meter again after auto power off.
This is a handheld and battery operated digital multimeter with various functions. It is designed to meet IEC61010-1 and CAT II 600V over voltage category and double insulation. This meter is featured with a holster that is giving the main body, though downsized, high resistance against drop accidents.
This multimeter can also be used in school, laboratory, factory and other social fields. It can also be used for measurement in building facilities such as on distribution boards, circuit breaker and industrial equipment located in fixed facilities, as a fixed motor.
Included in this package are:
- 1 Crenova MS8233D Digital multimeter
- 2 test leads
- 1 user manual
6) AstroAI Digital Multimeter with Ohm Volt Amp and Diode Test
The AstroAI Digital Multimeter is specially designed to safely and accurately measures voltage, current, resistance, diode, continuity and more. It also accurately troubleshoots varieties of automotive and household electrical problems. It is easy to use and it features data hold and large display with backlit LCD for visibility in dimly light areas. You can use this multimeter for household outlets, fuses, wiring, general-purpose batteries, vehicle battery and charging system, automotive circuits and more.
This multimeter has a built-in kickstand on the back so you don’t have to hold it the entire time you want to use it. It can be used to diagnosed, assemble, repair circuitry and wiring. Other features include a low battery indicator and continuity buzzer. It also has an overload protection against drop accidents.
Included in this package are:
- 1 AstroAI Digital Multimeter
- 1 9V 6F22 battery
- 2 test leads
- 1 user manual
7) ELIKE T-92 Self-Recovery Digital Multimeter Amp/Ohm/Volt with Diode,Continuity, Capacitance,hFE,IR Detector and Livewire Identification
The T-92 Digital Multimeter is specially designed for measuring current, voltage, resistance, capacitance, in commercial home repair, automotive, and electrical testing applications. There is an audible continuity function that confirms whether the circuit conducts electricity or not. There is also a diode test which detects whether a circuit’s diodes are working properly or not.
This product also features a low battery indicator that signals when the meter’s battery needs to be replaced already. It has a clear and big LCD screen which displays result (identify live wire) quickly with 2-3 readings per second update speed. It can be used to diagnose, assemble, and repair circuitry and wiring.
Other features of this product include continuity buzzer, negative polarity display, infrared data detection, livewire identification, auto power off and self-recovery protection. It has an overload protection against drop accidents.
This multimeter is an ideal tool for electricians, hobbyists, and household works.
Included in this package are:
- 1 digital multimeter
- 1 pair of test probe leads (3 ft. wire)
- 1 English manual
- 1 outer case
8) Fluke 115 Compact True-RMS Digital Multimeter
The Fluke 115 Compact True RMS Digital Multimeter is specially designed with true RMS for safe and accurate measurements on nonlinear loads. It is featured with large white LED backlight best suited for dark and poorly lit places. This has the ability to measure and check continuity, frequency, capacitance and diode test. It measures 20A (30 seconds momentary; 10A continuous).
This multimeter has the dimensions of 6.6 by 1.8 by 3.3 inches. It weighs 6 pounds.
9) DMiotech Digital Multimeter Multi Tester AC / DC Voltage Current Temperature Test Resistance Continuity Diode Transistor hFE Meter with LCD Display Smart-A
The DMiotech Digital Multimeter is designed to safely and accurately measure AC/DC voltage, current, resistance, continuity, diode, transistor hFE and more. It also accurately troubleshoots a variety of household and automotive electrical problems. This is a compact size digital multimeter with temperate test functions. And you won’t have to worry for this multimeter ensures a long life service for both the beginners and the professionals.
Innova Multimeter 3320 Manual
Other features include auto power off, data hold and a big LCD screen with bright backlight best suited for dimly lit places. It has a buzzer and a red LED indicator for continuity test. The 10 MegOhm input is safe for automotive and household uses because it has a double insulated body structure and a pair of CAT3 1000V 20A yellow probes.
And behold! The Dmiotech Smart-A Digital Multimeter comes with a one year warranty and a lifetime support guarantee.
Included in this package are:
- 1 multimeter
- 1 pair of CAT3 20A test leads
- 1 thermocouple
- 1 colored manual in English
- 1 9V battery
10) Etekcity MSR-R500 Digital Multimeter, Volt Amp Ohm Meter with Diode and Continuity Test, Red
The MSR-R500 is designed to safely and accurately troubleshoot any household and automotive electrical problem. It measures voltage, current, continuity, resistance and more. It features a data hold function that keeps the measurements displayed on the MSR-R500 while you record them and a larger display makes it easier to read. It also has a backlit LCD and protective rubber sleeve that protects it from drops and falls associated with the toughest jobs.
This digital multimeter can tackle the toughest challenges. This is the meter for every job. You will also be given a one year warranty if you purchase the MSR-R500 Multimeter.
Do It All, and Then Some
The MSR-R500 offers complete functionality between measurements in voltage, current, continuity, and resistance. This workhorse can tackle the toughest challenges in and around the house. It’s tough rubber sleeve protects it from the drops and falls associated with the toughest jobs.
Built for Everyday Use
A Data Hold function keeps the measurements displayed on the MSR-R500 while you record them and a larger display makes the MSR-R500 multimeter even easier to read. Add in the LCD backlight and protective rubber bumper and this is the meter for every job.
If you’re into electrical hobbies, vehicle or home maintenance and the like, you can’t go much wrong with this useful little device. The Equus 3320 has a lot going for it, able as it is to test all required ranges, such as voltage, current and resistance. Small enough for most tool-bags and cheap enough for most pockets, it comes with a great battery test feature and big display.
Appeals most to: First timers, car enthusiasts and even journeymen looking for a cheap and reliable backup.
Ships With
- Holster
- Test leads
- AA batteries
- Instruction booklet (Equus 3320 manual)
Main Features & Functions
- Big display
- Auto-scaling
- User-friendly interface
- Can measure current
- Color-coded, pre-loaded battery check
- Auto power-off
- UL certification
- Protective rubber holster
- Dimensions: 5.5″ x 3.5″ x 1.25″
- Weight: 6.3oz
The Equus 3320 in More Detail
First off, the Equus 3320 is easy to use as it is an auto-ranging multimeter with a user-friendly display & dial. You can test most things with it, including voltage up to 600V (both AC and DC), amps, resistance and diodes. The battery tester is especially handy, making it particularly conducive to checking vehicle electrics since it pre-loads circuits.
While you can get by testing most auto circuitry (DC amperage scale is to 10A), the AC amperage capacity is a bit limiting. You can only measure 20mA to 200mA on AC, so it’s only really useful for testing low energy mains circuitry in that respect. That said, most won’t need to test current so it’s not entirely a deal breaker.
Regards testing higher DC amps, just bear in mind that you can only do so for short periods and will then need to let the unit cool down. The resistance range is fairly generous, from 200Ω up to 20MΩ, with meter impedance at 10MΩ. You don’t get capacitance, however, and the display is also not backlit.
Battery test: Great for checking everything from standard cells to car batteries, you get a pre-load to stress the battery and better gauge the overall status for holding charge. Settings: 12V, 9V, 6V, 1.5V. LEDs denote charge status: GREEN: good, YELLOW: weak, RED: replace. No LED = less than 10% charge and thus no good.
SPECS
| RANGE | ACCURACY | RESOLUTION | |
|---|---|---|---|
| DC voltage | 5 ranges (200mV / 600V) | ±(0.8%+5) | 100mV @ 200V |
| DC current | 4 ranges (20mA / 10A) | ±(1-2%+5) | 100µA @ 200mA |
| AC voltage | 4 ranges (2V / 600V) | ±(1.2%+5) | 10mV @ 20V |
| AC current | 2 ranges (20mA / 200mA) | ±(1.5%+5) | 10µA @ 20mA |
| Battery test | ±(5%+5) | ||
| Resistance | 6 ranges (200Ω / 20MΩ) | ±(1.0%+5) | 10Ω @ 20kΩ |
| Diode test | 2V | 1mV | |
Functions and Performance
Seasoned users may find it a tad slow when settling on a reading and when checking for continuity, but for DIY stuff and knocking around the yard, the Equus 3320 is a decent buy. An auto-off feature saves battery life by shutting it down after around 15 minutes of non-use. This can be a life-saver in the field – forgetting to turn off a tester after use is default for many and will quickly flatten the batteries of those that don’t enjoy this feature.
Build Quality
The holster has rubber corners, but you don’t get the quality of higher end multimeters and of course shouldn’t expect it. The Equus 3320 is quite light and clearly not a super-sturdy meter, but is not meant for industry or similarly heavy working environments.
It’s a fairly cute looking device in any case, with standout lead holders on the side and a high contrast facade where all the dial functions are clearly labeled. There’s also a stand for bench work, and a cord hook for hands-free working under cars etc.
Display: You don’t get a high-res screen on the 3320 – 3 1/2 digit (2000 count) – but it is okay for measuring general circuitry. The main plus is its large size, though it’s not backlit. Units are clearly displayed, along with standard measurement readings and warnings such as over-range and low battery.
Safety Ratings
The 3320 is fused, albeit the lower current circuitry, which is shared with main test criteria. The higher, 10A jack is not fused, which is probably where Equus can keep the costing down. In short; the circuitry and protection is not there for higher energy monitoring of current, which is fine for lighter work.
Pros and Cons
PROS
- Auto ranging
- Big display
- Useful battery tester
- User-friendly interface
- Great price
CONS
- AC amps range low
- No capacitance
- No screen hold
- Display unlit
Conclusion
Innova 3320 Battery Load Test
The Equus 3320 is probably one of the best buy multimeters for those into the auto world looking to test low energy circuitry and save money at the same time. A starter meter, it can also of course test higher voltages and has current ranges as well as a cool battery check feature. For greater current range and features, have a look at the Equus 3340.
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Innova 3320 Multimeter Instructions
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