FLUKE – Máy đo điện trở đất Fluke 1621 Model: Fluke 1621 GEO

FLUKE – Máy đo điện trở đất Fluke 1621

Model: Fluke 1621 GEO

Hãng sản xuất: FLUKE – MỸ

Tham khảo: http://www.fluke.com/fluke/vnen/Earth-Ground/Fluke-1621.htm?PID=56019

                                

Tính năng Máy đo điện trở đất Fluke 1621:

• 3-pole Fall-of-Potential earth testing for basic measurements
• 2-pole resistance measurements for added versatility
• Easily capture values with single-button operation
• Ensure accurate measurements with automatic ‘noise’ voltage detection
• Hazardous voltage warning offers increased user protection
• Clearly read and record data with a large, backlit display
• Rugged holster and design for tough work environments
• Portable size allows for easy transportation
• Instantly be alerted to measurements outside of your set limit, when you use the adjustable limit setting
• 600 V Cat II

Thông số kỹ thuật Máy đo điện trở đất Fluke 1621:

General specifications
Measuring functions	3-pole earth ground resistance, 2-pole ac resistance of a conductor, Interference voltage
Intrinsic error	Refers to the reference temperature range and is guaranteed for one year
Measuring rate	2 measurements/second
Battery[1]	One 9 volt alkaline (LR61)
Battery condition	LO-BAT is displayed if voltage drops below 6.5 V
Voltages	Between jacks H/C2 and E/C1:  250 Veff maximum (effective voltage) Between jacks S/P2 and E/C1:  250 Veff maximum
Climatic class	VDE/VDI 3540 RZ (conforming to KWG as per DIN 40040, 4/87)
Temperature performance[2]	Working:  -10 °C to +50 °C (+14 °F to +122 °F) Operating:  0 °C to +35 °C (+32 °F to +95 °F) Storage:  -20 °C to +60 °C (+68 °F to +140 °F) Reference:  +23 °C ± 2 °C (+73 °F ± 4 °F)
Temperature coefficient	± 0.1 % of range per degree Kelvin
Safety	IEC/EN 61010-1, 600 V CAT II, pollution degree 2
Dimensions	113 mm x 54 mm x 216 mm (4.5 in x 2.1 in x 8.5 in), including holster
Weight	850 g (1.9 lb), including standard accessories, volume approximately 600 cm3
Note:	[1]If the tester is not going to be used, or is being stored for a long period, remove the battery and store separately from the tester to avoid damage from battery leakage.
Note:	[2]The four temperature ranges for the tester exists to satisfy European Standards requirements; the instrument can be used over the full working temperature range by using the temperature coefficient to calculate accuracy at the ambient temperature of use.

Electrical specifications
Maximum deviations:	E1 Influence factor  Position E1 Deviation influence  0 % E2 Influence factor  Supply voltage E2 Deviation influence  0 % E3 Influence factor  Temperature E3 E3 Deviation influence  2.3 % E4 Influence factor  Serial interference voltage (20 V) E4 Deviation influence  0.6 % E5 Influence factor  Probe- and auxiliary probe resistance E5 Deviation influence  10 %
Test voltage	3.7 kV
Protection type	IP 40; IEC/EN 60529
Electromagnetic compatibility	Emission: IEC/EN 61326 Class B  Immunity: IEC/EN 61326 Annex C
RE resistance measurement	Measuring method  Current-voltage measurement with improved cross-talk attenuation, no compensation of measuring lead resistance, with probe (3-pole) or without probe (2-pole), as per IEC/EN 61557-5 Open circuit voltage  23 to 24 V ac Short circuit current  > 50 mA ac Measuring frequency  128 Hz Maximum permissible overload  250 Veff
Measuring time	8 seconds (average from when START is pressed)
Limit input	Tester retains set value even if instrument is turned off (assuming battery power supply is sufficient)
Automatic changeover of resolution	RH  < 7 kΩ Resolution  0.01 Ω RH  < 50 kΩ Resolution  0.1 Ω RH  > 50 kΩ Resolution  1 Ω
Interference voltage display dc + ac	Vmax  30 Veff Common mode rejection  > 80 dB at 50 Hz and 60 Hz Ri  680 kΩ Measuring uncertainty  < 10 % for pure ac and dc signals

Measuring range
0.15 Ω to 20 Ω	Resolution  0.01 Ω Display range  0 to 19.99 Ω
200 Ω	Resolution  0.1 Ω Display range  20 to 199.9 Ω
2 kΩ	Resolution  1 Ω Display range  200 to 1999 Ω
Intrinsic uncertainty	± (6 % of measured value + 5D)
Operating uncertainty IEC 61557[1]	± (18 % of measured value + 5D)
Notes:	[1] Covers all deviations caused by influence quantities E1-E5. If the deviation E4 caused by high probe or auxiliary probe resistance is higher than specified flashes. Measured values are outside of the specified operating uncertainty.