Introduction to the Cropico DO6 Series:

• Covering a wide range of measurements from 1 micro ohm to 200 kilo ohm, the DO6 ohmmeter is a comprehensive ohmmeter with many features incorporated as standard.
   

• These benefits include manual and automatic range selection; temperature compensation for copper, referencing the measurement of copper to 20°C; voltage limiting facility for those wishing to measure switch contact resistance to International Standards.

Technical Specifications 

• Measurement: 4 Terminal Kelvin/Thomson, eliminating lead resistance errors

• Display:

• 4.5-digit, 15mm 7-segment LED with polarity and overload indication

• 2-digit, 16-segment LED for unit display

• Ranges:

• 9 ranges with manual selection via up/down keys

• Automatic selection with autorange function

• Auto Zero: Allows automatic zeroing of amplifiers and external circuits

• Temperature Compensation:Measurement compensated for the following (referenced to 20°C):

• Copper (Cu) = 3.93%/K

• Brass Ms63 = 1.50%/K

• Brass Ms80 = 1.60%/K

• Ambient temperature sensed with Pt 100 sensor

• Relay Output:For pre-selected upper and lower limit values:

• “Too Small”

• “Correct”

• “Too Large”

• Contact load: 30W max, 48V, 1 Amp

• Dry Circuit Measurement:

• In accordance with DIN 41640 part 4 and IEC – 132-1

• Open circuit voltage limited to 18mV

• Interface: RS232, 25-pin D-Bush, talk/listen function

• Terminals: 4mm safety sockets

• Operating Conditions:

• Working Temperature: 0°C to 50°C, relative humidity 90% max (non-condensing)

• Storage Temperature: -20°C to +60°C

• Power Supply:

• 230V ±6% / -10%

• Frequency: 45Hz to 65Hz

• Power Consumption: ~30VA

• Safety: IEC 1010, Protective Class 1

• Dimensions: 255mm (W) × 90mm (D) × 263mm (H) (approx.)

• Mass: ~5kg