function

Testing of equipotential bonding resistance between metal components, low value resistance testing, DC resistance testing, resistance testing of connecting conductors between ground grid electrodes, contact resistance and riveting resistance testing; Wire length testing, etc

power supply

DC 7.4V 2.6Ah rechargeable lithium battery, fully charged to approximately 8.4V

power

When the battery is fully charged, the measured power is ≤ 17.64W and the operating current is ≤ 2.1A

When the battery is fully charged, the measured power is ≤ 35.28W and the operating current is ≤ 4.2A (Type B)

Detection method

Precision four wire method, simultaneous detection of 2 A/D channels

range

0.01 Ω～ 30.0k Ω; 0.01 Ω～ 300 Ω (Type B)

Display rate

0.0001Ω

measurement accuracy

0.1 Ω～ 30.0k Ω, △ ≤ 1% · Rx (Rx is the measured resistance value)

0.01Ω～0.0999Ω， △≤10%·Rx

0.1 Ω~300 Ω, △ ≤ 1% · Rx (Rx is the measured resistance value) (Type B)

0.01 Ω~0.0999 Ω, △ ≤ 10% · Rx (Type B)

test current

HKCR3700

HKCR3700B

30 Ω range: ≤ 2.1A;

0.3 Ω range: ≤ 4.2A

300 Ω range: ≤ 210mA;

3 Ω range: ≤ 2.1A

3kΩ档： ≤21mA；

30 Ω range: ≤ 210mA

30kΩ档： ≤2.1mA；

300 Ω range: ≤ 21mA

Wire length test

L：≤999999m

Standard wire length

Standard wire length setting range: 1m to 30m

test interface

C1 current positive, C2 current negative, P1 voltage positive, P2 voltage negative

measure time

2 seconds/time

data storage

400 sets (data will not be lost in case of power failure or battery replacement)

Alarm Settings

Alarm threshold setting range: 1 Ω~30 Ω, 00 Ω does not activate the alarm function, and does not activate the alarm function every time it is turned on

Alarm Alert

When the test value exceeds the alarm set value, an alarm prompt of "beep beep beep beep beep" will appear

Test instructions

The blue Testing light flashes during the testing process

Charging Indicator

The indicator light on the charger lights up red when charging, and turns green when fully charged

data retention

Automatically maintain the display of the measured results after each test is completed

Test line

4 lines: 2 red and 2 black, each line is 5m long

Backlight function

Yes, suitable for dark places

display mode

LCD：128dots×64dots； 显示域： 44mm×27mm

host size

205mm×200mm×85mm

Quality

1.2kg

Line voltage

Should be avoided

Overflow display

Overscale overflow function: "OL" symbol display

Low voltage indication

When the battery voltage drops to 6.5V ± 0.1V, the low battery voltage symbol is displayed to remind timely charging.

Working temperature and humidity

-10℃～40℃； Below 80% RH

Storage temperature and humidity

-10℃～60℃； Below 70% RH

charging port

have

RS232 interface

Equipped with RS232 interface, software monitoring, data storage can be uploaded to the computer, saved and printed

Voltage resistance

AC 3700V/rms (between shell and screw)

Suitable for safety regulations

IEC61010-1, CAT Ⅲ 600V, Pollution Level 2, JJG724-1991 "Verification Regulations for DC Digital Ohmmeters", JJG166-1993 "Verification Regulations for DC Resistors", "DL/T967-2005 Verification Regulations for Loop Resistance Testers and DC Resistance Rapid Testers"