GOM-805 – Ohmmeter, Milli, 4-Wire, 0.05ohm to 5Mohm, 1 ??ohm, 1 A, 0.05%, 102 mm

Description

Product Overview

The GW Instek GOM 805 Ohmmeter is a professional‑grade instrument designed for precise resistance measurement across a broad range, from 0.05 µΩ to 5 MΩ. Featuring a 4‑wire (Kelvin) connection method, it eliminates lead resistance errors, ensuring true readings even at the lowest resistance levels. The device boasts a high‑resolution 50,000‑count display and a 3.5‑inch (320 × 240) TFT LCD that presents data clearly under various lighting conditions. With a measurement accuracy of 0.05 % and a selectable test current up to 1 A, the GOM‑805 meets the demanding requirements of electronics repair, component testing, and quality control in manufacturing environments. Its foldable UV/white beam style housing provides a compact footprint while protecting the display and controls during transport. The instrument is UL, CE, ETL, NIST‑traceable, and RoHS compliant, reflecting GW Instek’s commitment to safety and environmental standards.

Usage

The GOM‑805 excels in a variety of professional settings. In electronics laboratories, technicians use it to verify resistor values, assess solder joint integrity, and troubleshoot circuit boards. Manufacturing quality‑control teams rely on its rapid, repeatable measurements to certify product compliance with tight resistance specifications. Field service engineers appreciate the portable design for on‑site diagnostics of power equipment, motor windings, and cable assemblies. The instrument’s ability to handle high test currents up to 1 A makes it suitable for low‑resistance load testing, while its fine resolution of 1 µΩ enables detection of minute changes that could indicate wear or failure. Whether mounted on a workbench or carried in a service bag, the GOM‑805 provides reliable data that supports informed decision‑making.

Why Choose Us

Choosing the GW Instek GOM‑805 means selecting a meter built on decades of metrology expertise. The instrument is calibrated against NIST‑traceable standards, guaranteeing measurement confidence across its entire range. Its robust construction, featuring a foldable UV/white beam chassis, protects critical components from accidental impacts and environmental exposure. GW Instek offers comprehensive technical support, including firmware updates and detailed user manuals, ensuring that customers can maximize the meter’s capabilities throughout its lifecycle. The device’s compliance with international safety and environmental certifications (UL, CE, ETL, RoHS) provides peace of mind for organizations that must meet regulatory requirements. Additionally, the GOM‑805’s intuitive interface reduces training time, allowing users to achieve accurate results with minimal effort.

Key Features

• Four‑wire Kelvin measurement eliminates lead resistance for true low‑value readings.
• 0.05 % accuracy and 1 A test current deliver reliable data for critical applications.
• Wide measurement range from 0.05 µΩ to 5 MΩ covers most industrial and laboratory needs.
• 3.5‑inch high‑resolution TFT LCD provides clear, easy‑to‑read results in any lighting.
• Comprehensive after‑sales support, firmware updates, and calibration services ensure long‑term performance.

FAQ

What is the advantage of a 4‑wire (Kelvin) measurement?

A 4‑wire configuration separates the current‑carrying leads from the voltage‑sensing leads, removing the influence of lead resistance and allowing accurate measurement of very low resistances.

Can the GOM‑805 be used with external computers?

Yes, the meter includes RS‑232C, USB, and GPIB interfaces, enabling data logging and remote control through compatible software.

Is a battery required for operation?

The GOM‑805 is powered by an internal rechargeable battery; no external batteries are needed, and the unit provides several hours of continuous use on a full charge.

What warranty does GW Instek provide?

The standard warranty is one year from the date of purchase, covering defects in materials and workmanship. Extended service plans are available through authorized distributors.

How does the foldable UV/white beam design benefit the user?

The foldable design protects the display and controls during transport, reduces the instrument’s footprint on the workbench, and allows easy viewing from multiple angles.