For measurement of powders and granulated materials.
- Measure the resistance of powders and granulated materials
- Meets the requirements of NIOSH-TR-No. 42
- Includes caliper, spoon and brush
- Grounding accessories included
- Ideal for chemical, pharmaceutical, food and beverage industries
- Certificate of calibration traceable to NIST included
Resistance of Powder and Granulated Materials
The PRF-930 Powder Resistance Fixture measures the bulk resistance of powder and granulated materials. Test material is placed in the cavity between the measurement plates. Once a measurement has been made in ohms, a fixture calculation, or correction factor, converts the resistance measurement to volume resistivity in ohm-cm.
Superior Accuracy
The PRF-930 provides the most accurate measurements when used with a precision wide range resistance instrument, such as the PRS-801B Resistance System, or equivalent laboratory system. For guarded plate measurements use an instrument ground reference.
Occupational Safety and Health JNIOSH-TR-No. 42
The PRF-930 Powder Fixture meets requirements of “Technical Recommendations of National Institute of Occupational Safety and Health JNIOSH-TR-No. 42 (2007) Recommendations for Requirements for Avoiding Electrostatic Hazards in Industry 2007”
PRF-930 powder Fixture Specifications
| Characteristics |
|
| Upper Resistance Limit |
Nominal 1.00x1014 ohms ±20% @ 500 Volts, 71°F (21.7°C), 18% Rh, Clean, empty fixture.
Note that most resistance measure-ments are made at 100 volts and below. |
| Approximate Fixture Dimensions 1 |
W 2.36 in x D 1.25 in x H 2.25 in
60 mm x 32 mm x 57 mm |
| Approximate Fixture Volume |
15 cm3 |
| Fixture Weight |
12.35 oz (250 gm) |
1 Dimensions vary slightly from fixture to fixture as they are hand polished and assembled. Temperature and humidity will affect fixture dimensions.