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Manometer

Compressed air preparation

Aventics Series PG1-SNL pressure gauges are Bourdon-tube instruments for pressure indication in pneumatic systems. The range covers housing diameters of 40, 50 and 63 mm with G 1/8 and G 1/4 connections and measuring ranges from -1 to 0 bar (vacuum) through 0-1.6 bar up to 0-16 bar. Two installation types are available: radial rear-entry (ROB) and front-panel (PAN, rear-entry) for direct mounting in the gauge bracket of maintenance units.

The SNL designation indicates a standardised stainless-steel pointer and plastic housing. ROB types suit mounting in the gauge brackets of NL, AS and MU1 series pressure regulators; PAN types are designed for front panels and manifold plates with a G 1/8 bore.

⚙ Housing diameters 40 / 50 / 63 mm - types PG1-ROB and PG1-PAN, G 1/8 and G 1/4 connections
↕ Measuring ranges -1-0 to 0-16 bar - also 0-1.6 / 0-2.5 / 0-6 / 0-10 / 0-16 bar available
✓ Radial (ROB) and front-panel (PAN) - for gauge brackets on maintenance units or front-panel installation
✦ Vacuum measurement -1-0 bar - ROB and PAN versions for vacuum applications

The key selection parameters are housing diameter (40 mm for compact installations, 63 mm for a clearly readable large display), port thread (G 1/8 or G 1/4), installation orientation (ROB for rear-entry bracket mounting, PAN for front-entry panel installation) and the measuring range. The selected range should position the operating pressure in the upper third of the scale to maximise reading accuracy. PG1-SNL gauges with G 1/8 connection screw directly into the gauge port (GAN) of NL and AS series regulators.

Typical applications: Pressure indication on NL1 to NL6, AS3, AS5 and MU1 series maintenance units, front-panel mounting in machine control cabinets and operator panels, pressure monitoring on test benches and rigs, vacuum monitoring for suction cups and vacuum systems, and individual indication points in compressed-air distribution networks.

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What are pneumatic manometers and which industrial applications require precise pressure measurement?
Pneumatic manometers are precision pressure measuring instruments designed for continuous monitoring of compressed air systems in industrial applications. These devices are essential in automotive manufacturing plants, food processing facilities, pharmaceutical production lines, and general manufacturing where pneumatic actuators and control systems require accurate pressure feedback for process control. Aventics PG1 series manometers provide critical pressure data for system optimization, energy efficiency monitoring, and preventive maintenance scheduling across diverse industrial sectors.
What are the key technical specifications to consider when selecting Aventics pneumatic manometers?
When selecting Aventics pneumatic manometers, critical specifications include pressure range compatibility with typical ranges from 0-2.5 bar up to 0-16 bar as seen in the PG1-SNL series, connection thread sizes including G1/4 and G1/8 ports, and dial diameter options of 40mm, 50mm, or 63mm for optimal readability. The measurement accuracy class, media compatibility with compressed air and neutral gases, and ambient temperature rating determine suitability for specific pneumatic applications. Connection orientation and mounting configuration must align with system layout requirements for effective pressure monitoring.
Which international standards apply to Aventics pneumatic manometers for industrial compliance?
Aventics pneumatic manometers comply with EN 837-1 standards for pressure gauge accuracy and construction requirements, ensuring measurement precision within specified tolerance classes. These instruments meet ISO 9001 quality management standards and are manufactured according to ATEX directive 2014/34/EU for potentially explosive atmosphere applications where required. The manometers conform to DIN 16063 specifications for pressure measurement devices and maintain CE marking compliance for European market acceptance, providing documented traceability for quality assurance and regulatory compliance in industrial pneumatic systems.
What are the main differences between Aventics PG1-SNL and PG1-SFB manometer series?
The Aventics PG1-SNL series features analog dial displays with various diameter options including 40mm, 50mm, and 63mm gauges optimized for direct visual pressure reading in standard industrial environments. In contrast, the PG1-SFB series incorporates digital signal output capabilities with integrated pressure sensing technology for electronic system integration and remote monitoring applications. The PG1-SNL variants offer traditional mechanical pressure indication with robust construction for harsh environments, while PG1-SFB models provide electronic pressure signal transmission for automated control systems and data logging requirements.
What installation requirements and system compatibility considerations apply to Aventics manometers?
Aventics manometers require proper thread sealing using PTFE tape or thread sealant for G1/4 and G1/8 connections to prevent pressure leaks and ensure accurate readings. Installation must consider ambient temperature limits typically ranging from -20°C to +60°C and mounting orientation for optimal dial visibility and accessibility during operation. The manometers integrate directly into compressed air preparation units, filter-regulator combinations, and pneumatic control panels with standard ISO thread connections. System pressure must not exceed the maximum scale value to prevent damage, and proper pressure relief procedures are essential during maintenance operations.
What safety ratings and environmental specifications do Aventics pneumatic manometers provide?
Aventics pneumatic manometers typically feature IP54 ingress protection rating providing dust and splash water resistance suitable for standard industrial environments. Operating temperature range spans -20°C to +60°C for ambient conditions with maximum working pressure corresponding to the gauge scale range, commonly up to 16 bar for standard compressed air applications. The robust housing construction withstands vibration according to EN 837-1 specifications and maintains accuracy under normal industrial shock and vibration conditions. Overpressure protection typically allows 130% of full scale value without permanent damage to the measurement mechanism.
What maintenance schedule and inspection requirements ensure reliable operation of Aventics manometers?
Aventics pneumatic manometers require monthly visual inspection for dial clarity, pointer movement, and housing integrity to maintain measurement accuracy and detect potential issues early. Annual calibration verification against certified reference standards ensures continued compliance with EN 837-1 accuracy requirements and process control specifications. The mechanical movement should be checked quarterly for smooth pointer operation and zero return capability, while connection threads require periodic inspection for corrosion or damage that could affect sealing integrity. Service life typically extends 5-10 years under normal operating conditions with proper maintenance and calibration schedule adherence.