• Model NO.：hm2571B
• Clamp Opening Extent：32mm
• Single Measurement Time：0.5 Second
• Auto Power-off：5 Minutes After Boot up
• Product Name：Earth Resistance Clamp Meter
• Transport Package：Wooden Box with Foam Inside
• Trademark：GDHM
• Origin：Hubei, China(Mainland)
• Production Capacity：500 Sets Per Year

Basic Info.

Model NO. hm2571B Clamp Opening Extent 32mm Single Measurement Time 0.5 Second Auto Power-off 5 Minutes After Boot up Product Name Earth Resistance Clamp Meter Transport Package Wooden Box with Foam Inside Trademark GDHM Origin Hubei, China(Mainland) Production Capacity 500 Sets Per Year

Product Description

Hot Sale  Advanced Electronic Digital Clamp Earth Resistance Tester

Introduction
Clamp Earth Resistance Tester is widely applied in ground resistance measurement, loop resistance measurement in fields such as electric power, telecommunications, meteorology, oil field, architecture and industrial electrical equipment, etc. When measuring ground system with loop, there is no need to disconnect the ground wire without auxiliary electrode, which means safer and faster. ETCR Clamp Earth Resistance Tester can measure the ground fault which can not be measured by traditional method, can apply in the occasion where traditional methods are unworkable; ETCR Clamp Earth Resistance Tester measures the integrated value of ground resistance and resistance lead.
ETCR new Clamp Earth Resistance Tester is another perfect upgrade on old models. The performance contrast of new and old products shows below:

Items	ETCR2000 (Old Type)	ETCR2000+ (New Type)
Boot Time	Self-test needs 6 seconds,long boot time may easily result in boot error.	Self-test in 0.5 second, boot instantly
Measuring Range	0.01-1000Ω	0.01-1200Ω, Wider range
Stored Data	30 sets	99 sets
Beep Alarming	No	Yes
Interference Identification	No	With beeps and NOISE symbol blinking. Strong anti-interference ability.
RS232 Interface	No	RS232 interface Available
Power Consumption	100mA, Maximum 100mA	Maximum 50mA, Longer battery life
Meter Appearance	Heavy machine, Rough appearance, Hard operation	Fine appearance, More fixed structure, Easy operation
Battery Cover	No screws, Easy to result in accident hidden trouble due to battery off.	With fastening screws, Secure, Reliable, Easy battery replacement

 Technical Specifications

Function	Ground resistance test, Loop resistance test
Power Supply	6VDC 4 PCS of AA Alkaline batteries
Resistance Range	0.01-1200Ω
Resistance Resolution	0.001Ω
Highest Resistance Accuracy	±1%±0.01Ω
Data memory	99 Sets
Alarm Threshold Setting Range	Resistance: 1-199Ω
Alarm Sound and Light	"Beep-beep-beep" alarm tone, Alarm Symbol Flashing, Press AL key to turn on, turn off Alarm or set Alarm Threshold.
Interference Signal Recognition	"Beep-beep-beep" tone, NOISE symbol blinking
Working Temperature and Humidity	-20ºC-55ºC;20%RH-90%RH
LCD Screen	4 Digits LCD display, Screen L×W: 47mm×28.5mm
Clamp Size	65mm×32mm
Clamp Opening Extent	32mm
Tester Weight	1160g (With batteries)
Clamp Dimension	L×W×T: 285mm×85mm×56mm
Protection Level	Dual Insulation
Structural Feature	Clamp CT
Shifting	Automatic shifting
External magnetic field	<40A/m
External electrical field	<1V/m
Single measurement time	0.5 second
Resistance measurement frequency	>1KHz
Measured current frequency	50/60Hz Automatic measurement
Low Battery Indication	Low battery symbol displays when battery is lower then 5.3V
Memory Full Indication	MEM symbol blinks when all 99 sets memory is full
Over Range Indication	Out of range indication "OLΩ", "L0.01" or "OL A"
Auto Power-off	5 minutes after Boot up
Power Consumption	Max 50mA either in booting up or normally working, Continuously working for 30 hours
RS232 Interface (Optional)	The data stored in the meter are uploaded to the computer through RS232 interface and data wire, Then generate report files
Safety Provisions	IEC1010-1, IEC1010-2-032, Pollution level 2, CAT3 (150V)
Accessories	Meter: 1 piece, Test ring: 1 Piece, Meter Suitcase: 1 Piece