เครื่องวัดค่าความต้านทานดินแบบแคลมป์
Earth Clamp Tester รุ่น FT6380 / FT6381

คุณลักษณะ

เป็นเครื่องวัดความต้านทานดินที่ใช้งานได้ง่ายด้วยการวัดรูปแบบแคลมป์ในการวัดค่าของสายดินหรือ multiple-grounded โดยที่ไม่จำเป็นต้องใช้ grounding rod และไม่จำเป็นต้องถอดสายดินออกจาก grounding rod นอกจากนี้ตัวเครื่องยังมีขนาดกะทัดรัด พร้อมเซนเซอร์ที่สามารถวัดค่าได้อย่างสะดวก ด้วยฟังก์ชันการวัด AC current และยังสามารถตรวจสอบการรั่วไหลของไฟฟ้าได้ตั้งแต่ 20mA จนถึง 60A

คุณสมบัติ

MODEL	FT6380 / FT6381
Display	Digital/LCD, max. 2000 digits Display update rate : 2 times/sec
Range switching	Auto-range
Maximum conductor diameter for measurement	Ø 32 mm (1.26 in)
Power supply	LR6 alkaline battery x 2 Continuous operating time: Approx. 35 hours With display backlight off. Bluetooth OFF (FT6381)
Auto power save	Power save state when 5 minute have elapesed since the last operation
Operating temperature and humidity	-10 to 50°C (14 to 122°F), 80%RH or less (non-condensation)
Storage temperature and humidity	-20 to 60°C (-4 to 140°F), 80%RH or less (non-condensation, except for the battery)
Dustproof and waterproof	IP40 (EN60529) With Jaws Closed
Maximum rated voltage to earth	600 VAC neasurement category IV (anticipated transient overvoltage 8000V)
Dielectric strength	Between the Case and the Clamp core 7400 Vrms 1 minute
Maximum input current	100 A AC continuous, 200 A AC for 2 minutes (50/60 Hz)
Conductor position effects	Within ±0.5% rdg. (using the cebter of the sensor as the reference, in all positions)
Magnetic field interfarence	10 mA or less in an external magnetic field of 400 A/m at 50/60 Hz AC
Safety	EN61010, EMC: EN61326
Wireless (For FT6381 only)	FCC Part 15.247 / IC RSS-210 / EN 300 328, 301 489-1, 301-489-17 / Singapore DA106438 / Mexico (COFETEL) RCPHIWT13-0616 / Vietnam wireless standards not covered(60mWeirp or less) thailand (SDoC) module recognize / Indonesia (SDPPI) 33081 / SDDPPI / 2014
Dimensions, Mass	Approx. 73 x 218 x 43(2.87in x 8.58in x 1.69in) [W x H x D], Approx 620 g (21.9 oz)
Accessories	Carrying Case x1, Resistance Cheek Loop x1, Strap x1, Instruction Manual x1, Alkaline Battery(LR6) x2

Alarm function
Alarm Hi/Lo	Separate Hi/Lo Settings for resistance measurement and current measurement
	Resistance measurement: Hi.AL/Lo.AL.
	Current measurement: HiAL/Lo.AL
Alarm threshold setting range	Resistance measurement: 0.02Ω to 1.600Ω Resistance measurement initial value: 25.0Ω
	Current measurement: 0.05 mA to 200.0 mA, 0.201 A to 60.0 A Current measurement initial value: 1.00 mA

Resistance mode (Accuracy guranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)
Range	Measurement Range	Resolution	Accuracy
0.20Ω	0.02Ω to 0.20Ω	0.01Ω	±1.5%rdg. ±0.02Ω
2.00Ω	0.15Ω to 2.00Ω	0.01Ω	±1.5%rdg. ±0.02Ω
20.00Ω	1.80Ω to 20.00Ω	0.01Ω	±1.5%rdg. ±0.05Ω
50.0Ω	18.0Ω to 50.0Ω	0.1Ω	±1.5%rdg. ±0.1Ω
100.0Ω	50.0Ω to 100.0Ω	0.1Ω	±1.5%rdg. ±0.5Ω
200.0Ω	100.0Ω to 200.0Ω	0.2Ω	±3.0%rdg. ±1.0Ω
400Ω	180Ω to 400Ω	1Ω	±5%rdg. ±5Ω
600Ω	400Ω to 600Ω	2Ω	±10%rdg. ±10Ω
1200Ω	600Ω to 1200Ω	10Ω	±20%rdg.
1600Ω	1200Ω to 1600Ω	20Ω	±35%rdg.
Frequency of measurement Approx. 2,400Hz.

Current Mode (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)
Range	Measurement Range	Resolution	Frequency Range	Accuracy
				Filter off	Filter on
20.00 mA	1.00 mA to 20.00 mA	0.01 mA	45 ≤ f ≤ 66Hz	±2.0% rdg. ±0.05 mA	±2.0% rdg. ±0.05 mA
			30 ≤ f < 45Hz, 66 < f ≤ 400Hz	±2.5% rdg. ±0.05m A	-
200.0 mA	18.00 mA to 200.0 mA	0.1 mA	45 ≤ f≤ 66Hz	±2.0% rdg. ±0.5 mA	±2.0% rdg. ±0.5 mA
			30 ≤ f < 45Hz, 66 < f ≤ 400Hz	±2.5% rdg. ±0.5m A	-
2.000 A	0.180 mA to 2.000 A	0.001 A	45 ≤ f ≤ 66Hz	±2.0% rdg. ±0.005 A	±2.0% rdg. ±0.005 A
			30 ≤ f < 45Hz, 66 < f ≤400Hz	±2.5% rdg. ±0.005 A	-
20.00 A	1.80 mA to 20.00 A	0.01 A	45 ≤ f ≤ 66Hz	±2.0% rdg. ±0.05 A	±2.0% rdg. ±0.05 A
			30 ≤ f < 45Hz, 66 < f ≤400Hz	±2.5% rdg. ±0.05 A	-
60.0 A	1.80 mA to 60.0 A	0.1 A	45 ≤ f ≤ 66Hz	±2.0% rdg. ±0.5 A	±2.0% rdg. ±0.5 A
			30 ≤ f < 45Hz, 66 < f ≤400Hz	±2.5% rdg. ±0.5 A	-

Interface	FT6381
Interface	Bluetooth V2.1+EDR
Communication Distance	10 m (Class 2.1)
Communication Protocol	SPP (Serial Port Profile)
Compatibility	Smartphone / Tablet (AndriodTM)
Applicable OS	AndriodTM 2.1 or later
The application supports Andriod OS 2.1 or later, but proper operation is not guaranteed on all Andriod. Headsets. For more information about the devices on which proper operation has confimed, see Hioki's website.