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CROPICO

CROPICO is a brand associated with precision low-resistance measurement instruments, historically rooted in the United Kingdom. The product line includes digital micro-ohmmeters and milliohmmeters designed for measuring very low resistance values with high resolution. These instruments are used in industrial, laboratory, and field environments where contact resistance, winding resistance, and continuity must be verified. The CROPICO DO4000 series, for example, covers measurement ranges from 40 microohm to 4 kiloohm (DO4000 and DO4001) and from 4 microohm to 400 ohm (DO4002). These are benchtop or portable units intended for testing switches, relays, connectors, busbars, motor windings, and other low-resistance paths. The instruments are not CAT safety rated and are not NIST traceable as standard, which positions them for controlled environments rather than live high-energy circuits. 3G Electric supplies CROPICO milli- and micro-ohmmeters as part of its industrial test and measurement portfolio. The distributor provides access to multiple SKUs, including the DO4000, DO4001, and DO4002, with datasheets and logistics support for global delivery. Technical buyers can source these instruments for maintenance, quality control, and production testing. The product family is relevant to plant engineers and maintenance managers who need to detect increases in contact resistance, verify welded joints, or validate cable and winding integrity. Because the meters are not CAT rated, they are suited for de-energized testing or low-voltage applications where the risk of transient overvoltage is minimal. 3G Electric supports the line by offering part-number-level selection, documentation, and international shipping. The focus is on matching the correct measurement range and resolution to the application, rather than promoting a single model. For example, the DO4002 offers finer resolution at the low end (4 microohm) but a narrower upper range (400 ohm), while the DO4000 and DO4001 extend to 4 kiloohm. This allows users to choose based on the expected resistance values and required accuracy. The brand's instruments are typically used in industries such as power generation, manufacturing, rail, and telecommunications, where low-resistance measurements are critical for safety and reliability. 3G Electric does not manufacture these products; it distributes them as part of a broader catalog of industrial equipment. The company provides quotation, order processing, and export services for customers worldwide. No customer-specific references or project details are included here. All specifications are based on publicly available product data. The CROPICO line is one of several test and measurement brands available through 3G Electric, alongside burners, pumps, gas controls, and other industrial components. This profile is intended to help procurement specialists and engineers understand the product family and how to source it.

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About CROPICO

CROPICO is a brand associated with precision low-resistance measurement instruments, historically rooted in the United Kingdom. The product line includes digital micro-ohmmeters and milliohmmeters designed for measuring very low resistance values with high resolution. These instruments are used in industrial, laboratory, and field environments where contact resistance, winding resistance, and continuity must be verified. The CROPICO DO4000 series, for example, covers measurement ranges from 40 microohm to 4 kiloohm (DO4000 and DO4001) and from 4 microohm to 400 ohm (DO4002). These are benchtop or portable units intended for testing switches, relays, connectors, busbars, motor windings, and other low-resistance paths. The instruments are not CAT safety rated and are not NIST traceable as standard, which positions them for controlled environments rather than live high-energy circuits. 3G Electric supplies CROPICO milli- and micro-ohmmeters as part of its industrial test and measurement portfolio. The distributor provides access to multiple SKUs, including the DO4000, DO4001, and DO4002, with datasheets and logistics support for global delivery. Technical buyers can source these instruments for maintenance, quality control, and production testing. The product family is relevant to plant engineers and maintenance managers who need to detect increases in contact resistance, verify welded joints, or validate cable and winding integrity. Because the meters are not CAT rated, they are suited for de-energized testing or low-voltage applications where the risk of transient overvoltage is minimal. 3G Electric supports the line by offering part-number-level selection, documentation, and international shipping. The focus is on matching the correct measurement range and resolution to the application, rather than promoting a single model. For example, the DO4002 offers finer resolution at the low end (4 microohm) but a narrower upper range (400 ohm), while the DO4000 and DO4001 extend to 4 kiloohm. This allows users to choose based on the expected resistance values and required accuracy. The brand's instruments are typically used in industries such as power generation, manufacturing, rail, and telecommunications, where low-resistance measurements are critical for safety and reliability. 3G Electric does not manufacture these products; it distributes them as part of a broader catalog of industrial equipment. The company provides quotation, order processing, and export services for customers worldwide. No customer-specific references or project details are included here. All specifications are based on publicly available product data. The CROPICO line is one of several test and measurement brands available through 3G Electric, alongside burners, pumps, gas controls, and other industrial components. This profile is intended to help procurement specialists and engineers understand the product family and how to source it.

Common Applications

  • Power generation — CROPICO DO4001 for contact resistance testing of circuit breakers and disconnects
  • Manufacturing — CROPICO DO4002 for weld joint quality verification on busbars and battery tabs
  • Rail — CROPICO DO4000 for measuring resistance of traction motor windings and cable terminations
  • Telecommunications — CROPICO DO4001 for verifying low-resistance connections in grounding and bonding systems
  • Industrial maintenance — CROPICO DO4002 for checking relay and switch contact resistance after service
  • Electrical contracting — CROPICO DO4000 for continuity testing of de-energized power distribution components

Frequently asked questions

Common questions about CROPICO from 3G Electric.

What is the measurement range of the CROPICO DO4000 micro-ohmmeter?

The CROPICO DO4000 measures from 40 microohm to 4 kiloohm. It is a digital micro-ohmmeter designed for low-resistance testing. The instrument is not CAT safety rated and is not NIST traceable. Typical applications include contact resistance checks, winding resistance measurement, and continuity testing in de-energized or low-voltage circuits. The DO4000 is part of the same series as the DO4001 and DO4002, which offer different range and resolution combinations.

How does the CROPICO DO4002 differ from the DO4001?

The CROPICO DO4002 covers 4 microohm to 400 ohm, while the DO4001 covers 40 microohm to 4 kiloohm. The DO4002 provides finer resolution at the low end, making it suitable for measuring very small resistance values such as those in welded joints or thick cable connections. The DO4001 offers a wider upper range, useful for motor windings or longer cable runs. Both are digital micro-ohmmeters, not CAT rated, and not NIST traceable as standard.

Are CROPICO micro-ohmmeters NIST traceable?

The CROPICO DO4000, DO4001, and DO4002 are not NIST traceable as standard. If NIST traceability is required, users should arrange for calibration through a qualified laboratory. The instruments themselves do not include NIST-traceable calibration certificates by default. For applications where traceability is mandatory, plan for post-purchase calibration. 3G Electric can provide datasheets and part numbers, but calibration services are not included unless specified.

What does 'not CAT safety rated' mean for CROPICO ohmmeters?

Not CAT safety rated means the CROPICO DO4000 series instruments are not assigned a measurement category (CAT II, CAT III, CAT IV) for transient overvoltage withstand. They should not be used on live circuits where high-energy transients may be present. Typical use is on de-energized equipment or in low-voltage, low-energy applications. For live-circuit testing, select an instrument with an appropriate CAT rating. Always follow site safety procedures and verify the circuit is de-energized before connecting the ohmmeter.

Which CROPICO model is best for testing motor windings?

For motor windings, the CROPICO DO4000 or DO4001 is generally suitable because their upper range extends to 4 kiloohm, covering typical winding resistances. The DO4002, with a 400 ohm maximum, may be too limited for larger motors. However, the choice depends on the specific winding resistance. Measure a known good winding to determine the expected value, then select a model with adequate range and resolution. All three models are digital micro-ohmmeters and are not CAT rated.

Does 3G Electric provide datasheets for CROPICO products?

Yes, 3G Electric provides datasheets for CROPICO milli- and micro-ohmmeters as part of its product documentation. Datasheets include specifications such as measurement range, resolution, and operating parameters. For part numbers like DO4000, DO4001, and DO4002, the datasheet helps confirm compatibility with your test requirements. 3G Electric also offers logistics support for global shipping. Contact 3G Electric with the specific SKU or model number to request the datasheet and a quotation.