Instek GOM-802 DC Milli-Ohm Meter

The Instek GOM-802 is a precision DC milli-ohm meter designed for low-resistance measurement across a 30 mΩ to 3 MΩ range with 0.05% accuracy and 1 µΩ resolution. Built on four-terminal Kelvin measurement technique, it delivers stable results across demanding test environments including contact resistance verification, coil evaluation, and material conductivity assessment.

## Technical Specifications

• **Display:** 30,000 counts
• **Accuracy:** 0.05%
• **Measurement Range:** 30 mΩ to 3 MΩ
• **Resolution:** 1 µΩ
• **Test Current:** 1 µA to 1 A (range-dependent: 10 mA at 30 mΩ, 100 mA at 300 mΩ–30 Ω, 1 mA at 300 Ω, 100 µA at 3 kΩ–30 kΩ, 10 µA at 300 kΩ, 1 µA at 3 MΩ)
• **Sampling Rate:** 7 samples/sec (30,000 counts) or 30 samples/sec (3,000 counts)
• **Operating Temperature:** 18°C to 28°C
• **Warm-up Time:** 30 minutes
• **Power:** AC 100/120/220/230 V, 50/60 Hz
• **Dimensions:** 251(W) × 91(H) × 291(D) mm
• **Weight:** Approximately 3 kg

## Key Features

• Four-terminal Kelvin measurement eliminates lead resistance errors
• Continuous or triggered measurement modes for flexible test workflows
• Relative (REL) measurement, actual value, and percentage value measurement functions
• Hi/Lo comparator with limit percent setting and Go/NoGo testing capability
• PASS/FAIL alarm output with memory storage for 20 sets of Hi/Lo/GO settings
• Diode test and temperature measurement with compensation
• Manual or autoranging
• Auto-recall of last setting after power cycle
• Handler interface with PASS, FAIL, HI, LO, READY, and EOT output signals plus trigger input

## Typical Applications

• Contact resistance testing in switches and relays
• Coil resistance evaluation in motors and transformers
• Material conductivity assessment
• Quality assurance and component validation
• Go/NoGo production testing with integrated comparator

## Compatibility & Integration

**Standard:** Handler interface with scan support and output/input signal control

**Optional Interfaces:** RS-232C (DB-9 male connector) and GPIB

**Accessories:** PT-100 platinum temperature probe, GTL-232 RS-232C cable, GTL-108A test leads (included)