Digital Residual Pressure Manometer

Digital Residual Pressure Manometer is a safe, accurate, and environmentally-friendly alternative for measuring vacuum levels for all lab applications. These models meet the requirements of ASTM D2041 and AASHTO T 209 to measure specific gravity and density of asphalt mixtures, often called the asphalt Rice Test.

The mercury-free gauge uses an absolute pressure transducer to give an instant digital display of applied vacuum from 0 to 1,000mm Hg with 0.1mm resolution. Accuracy is ±0.5% of full scale with a resolution of 0.1mm.

Digital readings are provided on an easy-to-read backlit display. A 0.25in hose barb connection with a needle valve is supplied for vacuum tubing. The manometer is powered by a 9V battery or AC adapter, both included. Automatic shut-off saves power in battery mode. The AC adapter for MA-170F and MA-170FC operates on 230V/50Hz.

The MA-170C model is supplied with a certification of NIST calibration to meet AASHTO T 209 requirements. The model undergoes multi-point calibration at 25, 30, and 35mm Hg on NIST traceable equipment. The same NIST calibration or recalibration is available for existing MA-170 manometers by purchasing MAA-25 Digital Manometer Recalibration and sending the unit in.

The SGA-128 PumpSaver™ Air Dryer is recommended when operating the MA-170 to optimize efficiency.

Features:

• The optimal method for fast, accurate vacuum pressure measurements
• Easy to read digital display
• A mercury-free alternative for safe asphalt Rice testing
• NIST Traceable multi-point certification available

Included Items:

• Digital Residual Pressure Manometer, 115V/60Hz or 230V/50Hz
• NIST certificate of calibration (MA-170C only)
• Hose barb connection with needle valve
• AC adapter
• 9V battery

Accessories:

• MAA-25 NIST Calibration Certification for NIST calibration or recalibration using a multi-point calibration at 25, 30, and 35mm Hg NIST traceable equipment

Related blogs:

• Characteristics of Aggregates: Shape, Size & Specific Gravity
• Specific Gravity of Soil - Understanding ASTM & AASHTO Methods