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)	1Ω
	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

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

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%