Cropico DO4000 Digital Milliohmmeter

The Cropico DO4000 portable digital milliohmmeter is a practical instrument for low resistance measurement, ideal for use in the workshop, field or test facilities. This milliohmmeter is of rugged construction contained in a sturdy plastic case. The Cropico 4000 employs the four terminal resistance measurement method to eliminate the effect of lead resistance errors. The measured values are displayed on a 4-digit LCD display; an overflow of the selected range is also indicated. Simple push button selection of the range required plus and auto range feature ensures the ohmmeters may be easily used by unskilled personnel, error and status warnings are illuminated when appropriate. The utmost care has been used to ensure that the ohmmeters will withstand accidental mains voltage applied to the measuring terminals, but it is not recommended that voltage should be applied. FEATURES: True 4 terminal measurement eliminates lead resistance errors. Measuring range from 4 milli ohm to 4 kilo ohm. Temperature compensation (using PT100 probe). 10 micro ohm resolution. True zero capabilities. Digital Calibration. Auto / Manual range selection. Open circuit lead warning LED. 100mA measuring current. Auto power off to maximise battery life. Cropico DO4000 Specifications Range Resolution Typical Current Accuracy @ 20°C +5°C 1 Year Temperature Coefficient (°C) 4 kΩ 1 Ω 100 µA +(0.05% Rdg + 0.02% FS) 30 ppm Rdg + 1 ppm FS 400 Ω 100 mΩ 1 mA +(0.05% Rdg + 0.02% FS) 30 ppm Rdg + 1 ppm FS 40 Ω 10 mΩ 10 mA +(0.05% Rdg + 0.02% FS) 30 ppm Rdg + 1 ppm FS 4 Ω 1 mΩ 10 mA +(0.05% Rdg + 0.03% FS) 30 ppm Rdg + 4 ppm FS 400 mΩ 100 µΩ 10 mA +(0.05% Rdg + 0.05% FS) 30 ppm Rdg + 25 ppm FS 40 mΩ 10 µΩ 100 mA +(0.05% Rdg + 0.01% FS) 30 ppm Rdg + 25 ppm FS Additional Specifications Measurement 4 terminal Kelvin/Thomson principle eliminates errors due to lead resistance. Display 15mm LCD 4000 count with automatic decimal point and polarity indication. Ranges 6 automatic or manual selection with LED indication. Terminals 4mm safety sockets. Safety EN 61010-1 EMC-3N 61236. Zero and Ave Buttons to null measurement offsets. Protection 415V rms maximum at the measurement terminals will blow internal protection fuse. Calibration Digital security key protected. Battery Removable pack with 5 x 1.5V non-rechargeable batteries. Separate rechargeable pack, charger and docking station as optional extras. Working Temperature 0 to +40°C relative humidity 80% max non-condensing. Storage Temperature -20 to +50°C. Dimensons 215 x 130 x 55 mm (w x h x d) approx. Weight 0.8 kg (2lbs). Cropico DO4000 warranty 1 year (subject to product registration with Seaward).

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