Digital Surface Resistance Meter from DESCO (19291)
This instrument from DESCO, the Digital Surface Resistance Meter (item no. 19291), is a measuring device for electrical surface resistance. The unit measures both resistance point-to-point (Rtt) and resistance-to-ground (Rtg) and displays relevant environmental parameters during measurement.
Functions and Operation
- Resistance Range: <1.0 x 10^3 ohms to >1.0 x 10^12 ohms.
- Under-load test voltages: 10 V or 100 V ±5 % (automatic switching at higher resistance ranges as described in the documentation).
- Also measures ambient temperature and relative humidity.
- Internal memory for up to 100 measurements including resistance value, temperature, relative humidity, and test voltage.
- Measurement stabilization settings: Auto and Fixed, both can provide an ~15-second electrification period to comply with relevant test methods.
The product is supplied NIST-calibrated and manufactured in the USA. Operation and maintenance instructions, including the use of 2.27 kg electrodes for Rtt measurements and connection procedures for Rtg, are described in the manufacturer's technical bulletin.
Documentation: See datasheet from the manufacturer
Typical Applications
- Used for measuring resistance on work surfaces, including point-to-point (Rtt) measurements.
- Used for measuring resistance to ground (Rtg) by connecting the test lead to ground and using electrodes.
- Application for measurement on materials referred to in the manufacturer's references: work surfaces, flooring materials, and garments, as well as person/footwear/flooring systems in connection with the listed test methods (see manufacturer's documentation).
Specifications
- Product Name: Digital Surface Resistance Meter (DESCO, item no. 19291)
- Resistance Range: <1.0 x 10^3 Ω to >1.0 x 10^12 Ω
- Test Voltage: 10 V or 100 V ±5 %
- Environmental Measurements: Temperature and relative humidity
- Memory: Up to 100 stored measurements (value, temperature, humidity, test voltage)
- Stabilization Modes: Auto and Fixed (incl. ≈15-second electrification period)
- Calibration: NIST-calibrated
- Origin: Made in USA
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