Pressure Gauge Pressure Gauge

Product Overview

The ROSS Controls is a family of compact, bottom-mount pressure gauges designed for use with ROSS FRL (filter-regulator-lubricator) units and general pneumatic system monitoring. Offered in 1/8" and 1/4" port sizes with pressure ranges spanning from 0-60 psi (0-4 bar) to 0-300 psi (0-20 bar), these gauges provide accurate, real-time visual indication of pneumatic line pressure across a wide range of industrial applications.

The Series gauges utilize a proven Bourdon tube mechanism housed in a durable case. Dry dial gauges are suited for stable-pressure systems where vibration is minimal. Liquid-filled variants incorporate glycerin fill to dampen needle oscillation and suppress internal condensation, making them the preferred choice in environments with pressure pulsation, vibration, or high-cycle machinery.

Available as both standard (green shaded zone) and green-shaded face designs, the gauges deliver clear visual confirmation of operating pressure relative to the intended working range. Both NPT and metric port thread options are available through the 5400A series model designations. Gauges are compatible with all ROSS FRL units and can be specified as standalone inline monitoring devices throughout compressed air distribution systems.

For design engineers and maintenance personnel specifying pneumatic accessories, the series provides a cost-effective, reliable solution for pressure indication at filtration, regulation, and point-of-use monitoring locations throughout industrial pneumatic systems.

Key Engineering Features

• Bottom-Mount Port Configuration - Enables direct mounting on ROSS FRL regulators and filter-regulator units without additional fittings or adapters.
• Dry and Liquid-Filled Options - Dry dial gauges for stable-pressure systems; glycerin-filled variants dampen needle oscillation in vibration-prone or pulsating pressure environments.
• Wide Pressure Range Selection - Multiple pressure ranges available from 0-60 psi (0-4 bar) to 0-300 psi (0-20 bar) to match diverse system operating conditions.
• Dual-Scale Dial Face - Simultaneous psi and bar readout on a single dial face, eliminating conversion calculations on the shop floor and simplifying compliance with both domestic and metric specifications.
• Green-Shaded Zone Option - Green-shaded operating range printed on dial face provides immediate visual confirmation that system pressure is within the designed operating window.
• 1/8" and 1/4" Port Sizes - Two port size options accommodate standard FRL port sizes and a variety of manifold, inline, and panel-mount monitoring applications.
• Compact Form Factor - Small gauge case diameter minimizes installed envelope size, important in crowded machine-mounted FRL installations and compact pneumatic panel assemblies.
• Bourdon Tube Mechanism - Proven sensing technology provides consistent accuracy and long service life without electronic components or external power requirements.

Technical Specifications

General Specifications

Certifications & Compliance

Typical Applications & Industries

FRL Air Preparation Systems

• Direct mounting on ROSS filter-regulator and filter-regulator-lubricator units to provide continuous pressure indication at the air preparation station and confirmation that downstream equipment is receiving correctly regulated supply pressure.
• Pressure monitoring at individual machine pneumatic panels, providing operators and maintenance personnel with visual confirmation of regulated supply pressure without requiring pressure test equipment or portable instrumentation.
• Multi-station manifold assemblies where individual gauge ports confirm pressure at each outlet zone, enabling rapid identification of pressure losses in complex distribution systems.

Pneumatic Cylinder and Actuator Systems

• Inline pressure monitoring at pneumatic cylinder supply lines to verify that actuator force-generating pressure is within the designed range for consistent force output and cycle time.
• Air motor supply monitoring on conveyor drives, rotary actuators, and indexing systems where consistent inlet pressure is critical to maintaining speed and torque specifications.
• Press and stamping machine pneumatic circuits where pressure monitoring at the valve supply ensures that press clamping and part ejection forces meet production requirements.

General Industrial and Process Applications

• Compressed air distribution panel instrumentation for monitoring zone supply pressure across large facilities, enabling identification of pressure decay from line leaks or undersized distribution lines.
• Process control and automation cabinets requiring small-format pressure indication at individual pneumatic valve supply ports.
• Test bench and quality control equipment requiring accurate pressure indication during leak test, functional test, or flow measurement procedures.

Ordering and Model Number Configuration

Select the model number based on port size, pressure range, and gauge type required. All models mount directly on ROSS FRL units or standard NPT ports.

5400A1xxx models feature a 1/8" NPT bottom port. 5400A2xxx models feature a 1/4" NPT bottom port.

Liquid-filled gauges (glycerin) are recommended for installations subject to vibration, pressure pulsation, or rapid pressure cycling.

Green-shaded dial variants provide visual zone indication of the intended operating pressure range.

For BSPP (G) thread requirements, contact ROSS Controls for metric port variants.

Accessories

ROSS FRL Filter-Regulator-Lubricator Units

The Series gauges are direct-mount accessories for ROSS FRL air preparation units. Gauges install directly on the regulator adjustment body using the bottom-mount port without additional fittings.

Panel-Mount and Inline Adaptors

Standard NPT fittings and panel-mount adaptors allow Series gauges to be installed at inline tee points, manifold blocks, or panel cutout positions throughout the compressed air distribution system.

Related Products & Accessories

• FRL Filter-Regulator-Lubricator Units - Complete ROSS air preparation units for filtration, pressure regulation, and lubrication of compressed air. https://www.rosscontrols.com/en/categories/990-air-preparation
• 21 Series Directional Control Valves - Inline poppet directional control valves for pneumatic system control. https://www.rosscontrols.com/en/series/231-low-high-temperatures-classic-21-series
• Exhaust Silencers - Aluminum silencers for reducing pneumatic exhaust noise. https://www.rosscontrols.com/en/series/90-silencers

Frequently Asked Questions (FAQ)

Q: What is the difference between dry and liquid-filled gauges in the series?

A: Dry gauges use air-filled internals and are suitable for systems with stable, non-pulsating pressure. Liquid-filled gauges (glycerin) dampen needle movement caused by vibration or pressure pulsation, extending gauge life and improving readability in high-cycle or vibrating machinery.

Q: What port sizes are available for the series gauges?

A: The Series gauges are available with 1/8" NPT (5400A1xxx models) and 1/4" NPT (5400A2xxx models) bottom-mount ports.

Q: What pressure ranges are offered?

A: Available ranges include 0-60 psi (0-4 bar), 0-160 psi (0-11 bar), 0-200 psi (0-14 bar), and 0-300 psi (0-20 bar). Select the range closest to the intended operating pressure for best readability and accuracy.

Q: What does the green-shaded dial variant indicate?

A: Green-shaded dial gauges (such as 5400A1907 and 5400A2015) have a green arc printed on the dial face indicating the correct operating pressure range. This allows operators to verify at a glance that system pressure is within the designed window without reading specific numeric values.

Q: Are these gauges compatible with ROSS FRL units?

A: Yes. The Series gauges are direct-mount accessories for ROSS filter-regulator and FRL units. The bottom-mount port threads directly into the standard gauge port on ROSS regulator bodies.

Q: Can these gauges be used on non-ROSS equipment?

A: Yes. The gauges use standard NPT port threads and can be installed on any compatible pneumatic fitting, manifold port, or panel-mount adaptor using standard plumbing fittings.

Q: What fluid media are these gauges compatible with?

A: The Series gauges are rated for use with filtered, dry compressed air. They are not rated for hydraulic fluid, aggressive chemicals, or steam media.

Q: What is the maximum pressure rating?

A: The highest available range in the series is 0-300 psi (0-20 bar) for model 5400A2012. Do not exceed the full-scale pressure rating of the selected gauge.

Q: Are BSPP (G thread) variants available?

A: Contact ROSS Controls at (800) 438-7677 or rosscontrols.com for metric port thread variants. Standard catalog models ship with NPT threads.

Q: Is the gauge compatible with lubricated air systems?

A: The Series gauges are designed for filtered compressed air service. In lubricated air systems, ensure that oil mist does not accumulate inside the gauge case, which could degrade readability over time.

Q: What is the standard lead time?

A: Standard manufacturing lead times for quantities of 10 or fewer units are typically 3 to 4 weeks, with shipments available throughout the United States.

Q: Can I get a 3D CAD model for design integration?

A: Contact ROSS Controls for 3D model availability for Series gauge variants. CAD model availability can be confirmed on the individual product pages at rosscontrols.com.

Installation & Maintenance Guidelines

• Install gauges with the dial face visible from the normal operator or maintenance access position. Avoid mounting where dial face is obstructed by piping, machine guards, or enclosure panels.
• Apply thread sealant (PTFE tape or pipe thread compound) to male NPT threads before installation. Do not overtighten, as excessive torque can crack the gauge case or distort the connection port.
• For liquid-filled gauges, ensure the gauge is installed in the upright position (port at bottom) to prevent glycerin from contacting the dial face.
• Do not exceed the maximum pressure rating of the installed gauge. Install a pressure relief device or regulator upstream if supply pressure can exceed gauge full-scale rating.
• In vibrating machine installations, use liquid-filled gauge variants and consider flexible hose connections to isolate the gauge from mechanical vibration transmitted through rigid piping.
• Periodically inspect gauges for cracked dial faces, damaged cases, or inaccurate readings. Replace gauges that show evidence of mechanical damage or calibration drift.

Warranty & Global Support

ROSS Controls provides a one-year warranty on all products, covering defects in material and workmanship from date of purchase.

Global technical support is available through ROSS offices in the USA (headquarters in Ferndale, Michigan), Canada, Brazil, Germany, France, United Kingdom, India, China, and Japan.

Contact ROSS Controls USA at +1-248-764-1800 or visit rosscontrols.com for product configuration, technical support, and distributor locator services.

For complete technical data, dimensional drawings, and product configurator access, visit the ROSS Controls product page or contact ROSS Controls at (800) 438-7677.

Download Catalog: https://www.rosscontrols.com/en/series/176-pressure-gauge