Reliable pressure measurement is fundamental to the safety, efficiency, and quality control of industrial manufacturing operations. From monitoring the immense clamping forces in hydraulic presses and plastic injection molding machines to regulating the precise actuation of pneumatic systems, accurate pressure gauges are non-negotiable. They provide critical feedback for machine tool spindles, compressed air mains, and industrial vacuum systems. The diversity of applications demands a wide spectrum of instrumentation, covering low-pressure pneumatic circuits (0–10 bar), standard industrial hydraulics (0–250 bar), and high-pressure test benches (up to 700 bar). For OEMs and system integrators, sourcing durable, standards-compliant gauges that withstand the rigors of the factory floor—including vibration, pressure spikes, and harsh environmental conditions—is key to minimizing downtime and ensuring consistent production output. Manogauge delivers ISO 9001 certified instrumentation engineered for these demanding environments.
Adherence to international standards is critical for ensuring gauge performance, safety, and interchangeability in a global manufacturing marketplace. Manogauge instruments are designed and manufactured in compliance with key dimensional and performance standards, including EN 837-1 (European Standard for Bourdon tube pressure gauges), ASME B40.100 (Pressure Gauges and Gauge Attachments), and GB/T 1226-2017 (General pressure gauge). Our ISO 9001 certified quality management system guarantees consistent production quality, while CE marking indicates conformity with European Union health, safety, and environmental protection standards. This commitment ensures that our gauges meet the stringent requirements of OEMs and plant operators worldwide.
| Typical pressure range | 0–10 bar (pneumatics), 0–250 bar (hydraulics), up to 700 bar (high-pressure test) |
| Recommended wetted material | Brass for standard air/oil; 316 SS for corrosive cutting fluids or water-based hydraulics |
| Accuracy class | ±1.6% Class 1.6 (EN 837-1) for general use; ±1.0% Class 1.0 for critical process control |
| Filling | Glycerin for standard vibration damping; dry for static pneumatic systems |
| Connection | 1/4" or 1/2" NPT/BSP standard; bottom or center-back mount for design flexibility |
| IP rating | IP54 for general indoor machinery; IP65 where cutting fluids, coolants, or washdowns are present |
| Safety pattern | S1 (standard blow-out device) typical; S3 (solid front, blow-out back) for high-pressure hydraulics over 25 bar per EN 837-1 |
Specify a liquid-filled gauge for any application with significant mechanical vibration or fluid pulsation, such as near a hydraulic power unit or on a stamping press. The glycerin or silicone filling dampens pointer oscillation for readable measurements and lubricates the internal movement, drastically extending service life. A dry gauge is a cost-effective choice for static or low-cycle applications where vibration is minimal, such as monitoring a compressed air receiver tank or the status of a clogged filter indicator. Using a dry gauge in a high-vibration environment will lead to premature failure.
The Ingress Protection (IP) rating defines the level of sealing against foreign objects and moisture. IP54 provides protection against limited dust ingress and water splashes from any direction, making it suitable for general-purpose enclosures on machinery away from direct fluid spray. IP65 offers complete protection against dust and is resistant to low-pressure water jets. For a CNC machining center where gauges are exposed to high-volume coolant spray and frequent washdowns, an IP65 rating is the minimum requirement to prevent internal contamination and failure.
Dial size is primarily determined by the required viewing distance for safe and accurate readings. For dense control panels where operators work in close proximity, compact 40mm, 50mm, or 63mm dials are sufficient and save space. For primary system indicators on large machinery that must be monitored from several meters away on the plant floor, larger 100mm or 160mm dials are necessary for legibility. ASME B40.100 provides specific guidance on selecting a dial size that ensures readability at the intended operator distance, which is a critical ergonomic and safety consideration.
Hydraulic systems with fast-acting solenoid valves generate extreme, near-instantaneous pressure spikes (hydraulic shock or water hammer) that can far exceed the system's nominal operating pressure. A snubber, or a gauge with a built-in restrictor screw, is a throttling device that dampens these spikes before they reach the Bourdon tube. This protects the delicate gauge mechanism from fatigue, over-pressurization, and eventual rupture, ensuring a longer, more reliable service life. It is an inexpensive accessory that prevents costly gauge replacement and potential safety incidents.
The accuracy class, defined by standards like EN 837-1 and ASME B40.100, specifies the maximum permissible error as a percentage of the full-scale span of the gauge. For example, a 100-bar gauge with Class 1.6 accuracy has a permissible error of ±1.6 bar across its entire range. For general monitoring of a pneumatic line, a Class 1.6 or 2.5 gauge is typically sufficient. However, for a test bench used for quality control or component validation, higher precision is required. In this case, a Class 1.0 or even a Class 0.5 test gauge would be necessary to ensure accurate and repeatable results.