Fluke 1623-2 GEO Earth Ground Resistance Meter

Specifications :

Operating Temperature : 14 to 122°F (-10 to 50°C)
Storage Temperature : -22 to 140°F (-30 to 60°C)
Temperature Coefficient : ±0.1% of reading/°C <18°C >28°C
Intrinsic Error : Refers to the reference temperature range and is guaranteed for one year
Operating Error : Refers to the operating temperature range and is guaranteed for one year
Climatic Class     : C1 (IEC 654-1), 23 to 115°F (-5 to 45°C), 5 to 95% RH
Protective Type : IP56 for case, IP40 for battery door according to EN60529
Safety : Protection by double and/or reinforced insulation maximum 50 V to earth. IEC61010-1: 300V CAT II, Pollution degree two
EMC (Emission Immunity) : IEC61326-1: Portable
Quality System     Developed, designed, and manufactured according to DIN ISO 9001
External Voltage : V external, maximum = 24 V (dc, ac <400 Hz), measurement inhibited for higher values
V Ext Rejection : >120 dB (16²⁄3, 50, 60, 400 Hz)
Measuring Time : Typical six seconds
Maximum Overload : 250 V rms (pertains to misuse)
Auxiliary Power : 6 x 1.5 V Alkaline (type AA LR6)
Battery Life Span : Typical >3000 measurements