Monthly Archives: June 2012

The Comparison of Digital Multimeter Mastech MS8261 VS Sinometer MS8269

If you plan to select a digital multimeter and there are two meters for your reference. Sinometer MS8261 and Mastech MS8264. Which one you will decide to buy. Yes, many people will feel very puzzled about this choice. Because they are too alike, whether from appearance or the fuctions. The only difference is that the MS8264 can be used to test frequency but the MS8261 can’t. All other features are almost identical. If you can’t make a decision, let’s read the following comparison form at first and take a close comparison to make a wise choice.

Models MS8261 MS8264
Measurements
DC Voltage 1000V 1000V
AC Voltage 750V 750V
DC Current 10A 10A
AC Current 10A 10A
Resistance 200M 200M
Frequency NO 20K Hz
Capacitance 20uF 20uF
Inductance NO NO
Temperature NO NO
Diode test YES YES
Continuity test YES YES
hFE YES YES
Features
Range Selection Manual Manual
Digits 3 1/2 3 1/2
Counts 1,999 1,999
Bargraph NO NO
Back light YES YES
Data hold YES YES
Overload protection YES YES
Auto power off YES YES
Resettable fuse YES YES
Battery indication YES YES
Safety CAT.II CAT.II 1000V CAT.II 1000V
Safety CAT.III CAT.III 600V /
Dimensions
Power 9V (6F22) x1 9V (6F22) x1
Size 195×92×55mm 195×92×55mm
Weight 380g 380g

The Comparison of Digital Multimeter Mastech MS8268 VS Sinometer MS8269

HisTest.com provide professional Mastech and Sinometer digital multimeters. You may feel confused about the similarity between the Mastech and Sinometer digital multimeters. Today we’ll take Sinometer MS8269 and Mastech MS8268 as an example, through comparing this two series digital multimeter to help you know more about the Mastech and Sinometer digital multimeters. Whether from the appearance or most of functions, there are many similarities between Sinometer MS8269 and the Mastech MS8268, for instance, both can be applied to diode test and continuity test, but after taking a closer comparing, the distinction is easy to perceive. For example, the MS8269 can’t be used to test frequency while the MS8268 can. On the contrary, the MS8269 is qualified with the important features of testing the indcutance and temperature, but the MS8268 doesn’t have this two functions. For more differences and similarities of MS8268 and MS8269, here is a comparison form:

Models MS8268 MS8269
Measurements
DC Voltage 1000V 1000V
AC Voltage 750V 750V
DC Current 10A 10A
AC Current 10A 10A
Resistance 40M 20M
Frequency 200K Hz NO
Capacitance 200uF 200uF
Inductance NO 20H
Temperature NO 1,000°C
Diode test YES YES
Continuity test YES YES
hFE YES YES
Features
Range Selection Manual Manual
Digits 3 1/2 3 1/2
Counts 3,999 1,999
Bargraph NO NO
Back light YES YES
Data hold YES YES
Overload protection YES YES
Auto power off YES YES
Resettable fuse YES YES
Battery indication YES YES
Safety CAT.II CAT.II 1000V CAT.II 1000V
Safety CAT.III CAT.III 600V /
Dimensions
Power 1.5V(AAA)×3 9V (6F22) x1
Size 195×92×55mm 195×92×55mm
Weight 380g 380g

The Comparison of Sinometer Digital Multimeter MS8261 VS MS8269

For Sinometer MS8261 and MS8269 digital multimeter, Both of them can be used to test AC/DC Voltage and Current, Resistance, Capacitance and more. While the MS8269 has one more function, it can test inductance, the MS8261 doesn’t own this feature. This is the The biggest different between them. Apart from this difference, there exists another subtle differences, we can have a clear understanding of them through the followiwng form, in the comparison form, we’ll  figure out the identical features and the different features of MS8261 and MS8269 easily:

Models MS8261 MS8269
Measurements
DC Voltage 1000V 1000V
AC Voltage 750V 750V
DC Current 10A 10A
AC Current 10A 10A
Resistance 200M 20M
Frequency NO NO
Capacitance 20uF 200uF
Inductance NO 20H
Temperature NO 1,000°C
Diode test YES YES
Continuity test YES YES
hFE YES YES
Features
Range Selection Manual Manual
Digits 3 1/2 3 1/2
Counts 1,999 1,999
Bargraph NO NO
Back light YES YES
Data hold YES YES
Overload protection YES YES
Auto power off YES YES
Resettable fuse YES YES
Battery indication YES YES
Safety CAT.II CAT.II 1000V CAT.II 1000V
Safety CAT.III CAT.III 600V /
Dimensions
Power 9V (6F22) x1 9V (6F22) x1
Size 195×92×55mm 195×92×55mm
Weight 380g 380g

The Comparison of DC Power Supply HY3005D VS HY3005F-3

HisTest.com offers various DC Power Supplies. From their appearances, there is no big difference between them, but through comparing their specifications, you’ll figure out some prominent differences.Today, we will introduce the comparison of Mastech HY3005D DC Power Supply and Mastech HY3005F-3 DC Power Supply to all of you. Just have a look at the following comparison form, you’ll master the specifications of this two DC Power Supplies better,therefore help you select the correct DC Power Supply.

Models HY3005D HY3005F-3
Specifications
Power Mode Linear Linear
Input Voltage 110V AC or 220V AC, 60Hz
Output Available Single Triple
Output Voltage 0-30V DC 2x (0-30V DC)
Output Current 0-5A DC 2x (0-5A DC)
Output Additional NO DC 5V 3A Fixed
Power Max 150W 315W
Source Effect CV<0.01%+1mV,

CC<0.2% + 1mA

CV <= 0.01% + 2mV,

CC <= 0.2% + 2mA

Load Effect CV <= 0.01% + 3mV,

CC <= 0.2% + 3 mA

CV <= 0.01% + 3mV,

CC <= 0.2% + 3mA

Ripple & Noise CV <= 0.5 mV RMS,

CC <= 3 mA

CV <= 0.5 mV RMS,

CC <= 3 mA

Cooling System Fan (built-in) Fan (built-in)
Features
Digits 3 1/2 3 1/2
Display Type 2 LCD 4 LED
Accuracy (Volt) ±1%±2digits ±1%±2digits
Accuracy (Amp) ±2%±2digits ±2%±2digits
Constant Voltage YES YES
Constant Current YES YES
Protection Short Circuit Short Circuit
Resettable fuse YES YES
Environmental 0 – 102 F (0 -40 C), relative humidity: <90%
Other Features
Series Mode NO YES
Parallel Mode NO YES
Dimensions
Size 11.5″ x 6.5″ x 5.5″ 14″ x 8″ x 10″
Weight 14 lbs 25 lbs

The Comparison of DC Power Supply HY3003D VS HY3005D

HisTest.com offers various DC Power Supplies. From their appearances, there is no big difference between them, but through comparing their specifications, you’ll figure out some prominent differences.Today, we will introduce the comparison of Mastech HY3003D DC Power Supply and Mastech HY3005D DC Power Supply to all of you. Just have a look at the following comparison form, you’ll master the specifications of this two DC Power Supplies better,therefore help you select the correct DC Power Supply.

Models HY3003D HY3005D
Specifications
Power Mode Linear Linear
Input Voltage 110V AC or 220V AC, 60Hz
Output Available Single Single
Output Voltage 0-30V DC 0-30V DC
Output Current 0-3A DC 0-5A DC
Output Additional NO NO
Power Max 90W 150W
Source Effect CV<0.01%+1mV, CC<0.2% + 1mA
Load Effect CV <= 0.01% + 3mV, CC <= 0.2% + 3 mA
Ripple & Noise CV <= 0.5 mV RMS, CC <= 3 mA
Cooling System Fan (built-in) Fan (built-in)
Features
Digits 3 1/2 3 1/2
Display Type 2 LCD 2 LCD
Accuracy (Volt) ±1%±2digits ±1%±2digits
Accuracy (Amp) ±2%±2digits ±2%±2digits
Constant Voltage YES YES
Constant Current YES YES
Protection Short Circuit Short Circuit
Resettable fuse YES YES
Environmental 0 – 102 F (0 -40 C), relative humidity: <90%
Dimensions
Size 11.5″ x 6.5″ x 5.5″ 11.5″ x 6.5″ x 5.5″
Weight 13 lbs 14 lbs

Tips for Better Performance of Digital Multimeters

Once upon a time, when people need to test the ampere,volt and ohm, they used the ammeter,voltmeter, ohmmeters and many more. With the development of technology, the digital multimeters are used as a versatile instruments that can be used as ammeters, voltmeters, ohmmeters and many more. Unlike their analog counterparts, these multimeters offer readings in digital format and are hence far more accurate and precise. Digital multimeters as the name suggests are meters that perform multiple functions of ammeters, ohmmeters, voltmeters and provide results in digitalized format. They are nowadays used extensively in various auto repair and troubleshooting works. While in order to let

digital multimeter have better performance, there are certain maintenance tips that are to be followed to get the best from these digitalized multimeters.

These tips are to be followed not only while operating but also when you store and service them. While using multimeters as ammeter to measure electric current, it is recommended that you should never ground yourself. It is always essential to isolate your body from the ground. You can use dry clothing; rubber shoes, rubber mat, or any approved insulating material for the purpose. Also you should never touch exposed metal pipes, outlets, fixtures, etc. which might be at ground potential for total safety.

If you are using digital multimeters as voltmeter then always be careful when working with voltages above 60V do or 30V ac rms. Again, before opening the case, it is suggested that you should always disconnect test leads from all energized circuits for preventing any unwarranted accidents.

It should always be kept away from excess heat and moisture conditions for their proper functioning. You may keep the back covers open when you are not using them. However, you should never operate the meters unless the back cover is in place and fastened completely. If you are keen on cleaning the digital multimeters, it is not advisable to use abrasives or solvents. This would damage it beyond repair at times. Instead use only a damp cloth and mild detergents if you really have to clean them.

It need to be serviced and calibrated from time to time. It is recommended that you should always get them repaired from qualified and trained service technicians. Do not ever try to do it yourself unless you are professional. All of the users may know the usual tips when use it and maintain it. The most important point is that the careful when use it to do the testing job.

Follow these tips and rest assured you will never have to spend extra on repairing them or buying new ones for your use.

The Comparison of DC Power Supply HY3003D VS HY3003D-3

You can find various DC Power Supplies on Histest.com. From their appearances, there is no big difference between them, but through compare their specifications, you’ll figure out some prominent differences.Today, we will introduce the comparison of Mastech HY3003D DC Power Supply and Mastech HY3003D-3 DC Power Supply to all of you. Just have a look at the following comparison form, you’ll master the specifications of this two DC Power Supplies better,therefore help you select the correct  DC Power Supply for your job.

Models HY3003D HY3003D-3
Specifications
Power Mode Linear Linear
Input Voltage 110V AC or 220V AC, 60Hz
Output Available Single Triple
Output Voltage 0-30V DC 2x (0-30V DC)
Output Current 0-3A DC 2x (0-3A DC)
Output Additional NO DC 5V 3A Fixed
Power Max 90W 195W
Source Effect CV<0.01%+1mV, CC<0.2% + 1mA
Load Effect CV <= 0.01% + 3mV, CC <= 0.2% + 3 mA
Ripple & Noise  CV <= 0.5 mV RMS, CC <= 3 mA
Cooling System Fan (built-in) Fan (built-in)
Features
Digits 3 1/2 3 1/2
Display Type 2 LCD 4 LCD
Accuracy (Volt) ±1%±2digits ±1%±2digits
Accuracy (Amp) ±2%±2digits ±2%±2digits
Constant Voltage YES YES
Constant Current YES YES
Protection Short Circuit Short Circuit
Resettable fuse YES YES
Environmental 0 - 102 F (0 -40 C), relative humidity: <90%
Other Features
Series Mode NO YES
Parallel Mode NO YES
Dimensions
Size 11.5″ x 6.5″ x 5.5″ 10.4″ x 6.5″ x 14.4″
Weight 13 lbs 29 lbs

The Comparison of DC Power Supply HY1803D VS HY3003D

You can find various DC Power Supplies on Histest.com. From their appearances, there is no big difference between them, but through compare their specifications, you’ll figure out some prominent differences.Today, we will introduce the comparison of Mastech HY1803D DC Power Supply and Mastech HY3003D DC Power Supply to all of you. Just have a look at the following comparison form, you’ll master the specifications of this two DC Power Supplies better,therefore help you select the correct  DC Power Supply for your job.

Models HY1803D HY3003D
Specifications
Power Mode Linear Linear
Input Voltage 110V AC or 220V AC, 60Hz
Output Available Single Single
Output Voltage 0-18V DC 0-30V DC
Output Current 0-3A DC 0-3A DC
Output Additional NO NO
Power Max 54W 90W
Source Effect CV<0.01%+1mV, CC<0.2% + 1mA
Load Effect CV <= 0.01% + 3mV, CC <= 0.2% + 3 mA
Ripple & Noise  CV <= 0.5 mV RMS, CC <= 3 mA
Cooling System Fan (built-in) Fan (built-in)
Features
Digits 3 1/2 3 1/2
Display Type 2 LCD 2 LCD
Accuracy (Volt) ±1%±2digits ±1%±2digits
Accuracy (Amp) ±2%±2digits ±2%±2digits
Constant Voltage YES YES
Constant Current YES YES
Protection Short Circuit Short Circuit
Resettable fuse YES YES
Environmental 0 - 102 F (0 -40 C), relative humidity: <90%
Dimensions
Size 9″ x 6.8″ x 3.7″ 11.5″ x 6.5″ x 5.5″
Weight 10 lbs 13 lbs