DC milli-ohm meter
This DC milli-ohm meter from GW‑INSTEK, model GOM-804, is specifically designed for precise low-resistance measurement. The manufacturer states that the GOM-804 has a maximum display of 50,000 counts and uses a 3.5" (320 x 240) TFT LCD screen for result display and operational information.
Measurement Precision and Functions
The GOM-804 has a stated measurement accuracy of 0.05% at 1 A test current and a resolution of 0.1 µΩ. The instrument supports four-wire resistance measurement as well as temperature measurement with temperature compensation. The sampling rate is specified as 60 readings per second. Unit operation and settings memory are present, including 20 sets of panel settings.
Interfaces
- USB device
- RS-232C
- Handler/Scan/EXT I/O (D-sub 25-pin for external control functions)
- GPIB (optional for GOM-804)
Typical applications
- Low resistance measurement as specified by the manufacturer.
- Measurement of contact resistance, for example, contact resistance in connectors, as mentioned in the manufacturer's product text.
- Temperature-compensated resistance measurements where a temperature sensor and compensation are necessary.
Specifications
- Model: GOM-804 (GW‑INSTEK)
- Display: 3.5" (320 x 240) TFT LCD
- Resolution: 0.1 µΩ
- Measurement accuracy: 0.05% at 1 A test current
- Test current (stated reference): 1 A
- Display range: up to 50,000 counts
- Four-wire resistance measurement
- Temperature measurement and temperature compensation
- Sampling: 60 readings per second
- Panel settings: 20 sets of memory
- Interface: USB device, RS-232C, Handler/Scan/EXT I/O; GPIB as an option
Source: Manufacturer's product page for GOM-804/GOM-805 (GW‑INSTEK).
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