Friday, March 28, 2014

Mastech MS2302 Digital Earth Resistance Tester

Mastech MS2302 Digital Earth Resistance Tester

Features:

  • Large LCD display with bar graph
  • 2 Pole/ 3Pole Measurement Modes
  • Earth resistance measured by constant current inverter 800Hz/3mA
  • MAX/MIN/AVG/REL Measurement Functions
  • Data Logging up to 100 groups
  • Measures Voltage to Earth
  • Display back light
 Specification:

Digital Display & Analog Bars Display
2 Pole and 3 Pole Mode
Earth resistance by constant current inverter 800Hz/3mA
MAX/MIN/AVG/REL Measurement Functions
Data Logging : 100 group measured values can be memorized
Low Battery Display
Display Backlight
Description
Measuring Range
Accuracy
Resolution
Earth Ground Resistance
0Ω~29.99Ω
±(1%+2)
0.01Ω
30Ω~99.9Ω
±(3%+2)
0.1Ω
100Ω~999Ω
±(3%+2)
1.00kΩ~4.00kΩ
±(3%+2)
10Ω
Measuring Voltage
0V~20.0V (50~60Hz)
±(1%+5)
0.1V



Mastech MS2208 Single Phase Harmonic Power Meter

Mastech  MS2208 Single Phase Harmonic Power Meter


Features:
  • Large Dual 6000 Counts LCD Display
  • Measures AC Voltage, AC Current, Single Phase Active Power, Power Factor, Passive Power, Frequency and Harmonic
  • Data Hold and Display Back Light
  • Auto Power Off


Specification
Range
Accuracy
AC Voltage(TRMS)
10V ~ 600V
±(1%+5)
AC Current(TRMS)
2mA ~ 3999mA
±(2%+5)
4A ~ 200A
±(2%+5)
Single phase active power(kW)
0.1W ~ 120KW
±(3%+5)
Single phase apparent power(kVA)
0.01kVA ~ 120kVA
±(3%+5)
Single phase reactive power(kVAr)
0.01kVAr ~ 120kVAr
±(3%+5)
Power Factor
0.3~1 capacitive
±(2%+2)
0.3~1 inductive
±(2%+2)
Frequency(Hz)
30Hz~1kHz
±(0.5%+1)
Harmonic measurement
Harmonic number: 1
±(3.0%+10)
Harmonic number: 2~6
±(3.5%+10)
Harmonic number: 7~8
±(4.5%+10)
Harmonic number: 9~10
±(5.0%+10)
Harmonic number: 11~15
±(7.0%+10)
Harmonic number: 16~20
±(10%+10)
Display
6000 counts
Jaw Opening
Φ26mm/1.0”
Auto Ranging
MAX/MIN
MAX/MIN measurement mode
Flash Light
Pointing to the target area
Data Hold
Display   Backlight

Mastech MS2203 Three Phase Digital Power Clamp Meter

Mastech MS2203 Three Phase Digital Power Clamp Meter


Features
  • Power measurement of 3-phase 3-wire, 3-phase 4-wire, single-phase mode
  • V, A, W, VA, VAR, kWh, PF, Hz measurement
  • Double display two parameters on each menu and store 28 groups of measurement parameter
  • Measure total power value and five power parameters of each phase in 3-phase measurement mode respectively
  • Autorange and TRMS display
  • With PC RS232 interface and windows graphics software
  • Display measurement time and select tested signal be power supply for the clamp at one time, the instrument can measurement for long time
  • Large LCD display, multifunctional button control
Specifications:
  • Max conductor size Φ50mm
  • AC Current(A) 40/100/400/1000A±2%
  • AC Voltage(V) 100/300/600V±1.2%
  • Active Power(kW) 4/10/40/100/600kW±3.0%
  • Apparent Power(kVA) 4/10/40/100/600kVA±3.0%
  • Power Factor(PF) 0.3cap to 0.3ind±0.02
  • Reactive Power(KVAR) 4/10/40/100/600kVAR±4.0%
  • Active Energy(kWh) 10/100/1000/10000kWh±3.0%
  • Frequency(Hz) 20Hz~ 1000Hz 0.5%
  • Display 4 digits LCD 9999
  • Power supply 4 x 1.5V AA
  • Operating Temperature 0°C~ 40°C
  • Dimensions 300mmx 103mm x 51mm
  • Weight Approx. 500g

Monday, March 24, 2014

Atmel AT89LV55-12PC microcontroller

Atmel AT89LV55-12PC microcontroller
8-bit microcontroller  MCS-51 family

specifications: 
- Architecture: 8051
- Working voltage: 2.7V - 6V DC
- Program memory size: 20KB
- Volatile data memory size: 256 Bytes
- The size of non-volatile data memory: -
- Peripherals: I / O ports, UART
- Number of I / O: 32
- Number of external interrupts: 8
- Timer / Counter: Three 16-bit Timer / Counter
- Working frequency: 0Hz - 12MHz
- Programming interface: Parallel (non-ISP)
- Interface peripherals: UART
- Special Features: Low Power Idle and Power Down Modes, Three-level Program Memory Lock.
- Packaging: PDIP-40

Tuesday, March 18, 2014

MS2138R DIGITAL AC/DC CLAMP METER

MS2138R DIGITAL AC/DC CLAMP METER

Features:
  • Big Jaw Size up to Φ40mm/1.6” 
  • 4000 Counts Digital LCD Display 
  • Measures AC/DC Current up to 1000A 
  • Work Light and Back Light 
  • True RMS for AC Current and Voltage 
  • Tests AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency and Duty Cycle 
  • Diode Check and Continuity Test 
  • MAX/MIN, Data Hold and Auto Power Off 

Display
counts
4000
Jaw Opening

Φ40mm/1.6”
Auto Ranging

Manual Ranging

Auto Power Off

Diode
2.7V
Continuity Buzzer
<50 p="">
REL
Relative measurement

Specifications:
DC Voltage
400mV/4V/40V/400V
±(0.7% +3)
600V
±(0.8% +2)
AC Voltage
4V/40V/400V
±(0.8% +3)
600V
±(1% +4)
AC Current
40A/400A/1000A
±(2.5% +6)
DC Current
40A/400A/1000A
±(3.0% +6)
Resistance
400Ω/4kΩ/40kΩ/400kΩ/4MΩ
±(0.8% +3)
40MΩ
±(1.2% +3)
Capacitance
40nF/400nF/4µF/40µF/400µF/4000µF
±(4.0% +5)
Frequency (From Clamp)
0~ 1KHz
±(1.5% +5)
Frequency (From Plug)
0~10MHz
±(0.5% +3)
Duty Cycle
10%~ 90%
±3.0%

MS2108A DIGITAL AC/DC CLAMP METER

MS2108A DIGITAL AC/DC CLAMP METER



Features:
  • Jaw Size: Φ26mm/1.0”
  • Tests AC/DC Voltage and Current, Resistance, Capacitance, Frequency and Duty Cycle
  • Work Light and Display Back Light
  • Diode Check and Continuity Test
  • MAX/MIN and Data Hold


Display
counts
4000
Jaw Opening

Φ26mm/1.0”
Auto Ranging

Manual Ranging


Auto Power Off

Inrush
Integration Time: 100ms

True RMS
True Root Mean Square Measurement

REL
Relative measurement
Diode
2.7V
Continuity Buzzer
<50 p="">
MAX/MIN

Data Hold

Low Battery Display

Display Backlight

Flash Light


Specifications:
DC Voltage
660mV/6.6V

66V/600V

400mV/4V
±(0.8% +3)
40V/400V/1000V
±(1.0% +5)
AC Voltage
660mV

6.6V/66V

600V

4V/40V/400V
±(0.8% +3)
750V
±(1.0% +5)
DC Current
66A/600A

40A/400A
±(2.0% +6)
AC Current
66A/600A

40A/400A
±(2.0% +6)
Inrush Current (100ms)
66A/600A

Resistance
660Ω/6.6kΩ/66kΩ/660kΩ/6.6MΩ

66MΩ

400Ω/4kΩ/40kΩ/400KΩ
±(0.8% +3)
4MΩ/40MΩ
±(1.2% +3)
Capacitance
6.6µF/66µF/660µF/6.6mF/66mF

400nF/4µF/40µF/400µF/4000µF
±(4.0% +5)
Frequency (From Clamp)
0~ 1KHz

0~ 10KHz
±(1.5% +5)
Frequency (From Plug)
0~ 10KHz

0~ 10MHz
±(1.5% +5)
Duty Cycle
10%~ 90%
±3.0%