Precision Test and Calibration Pressure Gauges

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Product Overview

Our Precision Test and Calibration Pressure Gauges are the definitive standard for verifying the accuracy of other instruments and for use in highly critical process applications. Engineered with a finer movement, mirror scale, and superior accuracy class (typically ±0.25% or ±0.5% of full scale), these gauges ensure the highest possible reading resolution and repeatability. They are indispensable tools for calibration labs, inspection departments, and field service technicians who demand reliable, traceable pressure measurements.

Key Features

Superior accuracy class for testing and calibration.
Mirror band dial to eliminate parallax error.
Traceability to national standards (NIST, etc.).

Technical Specification Sheet

Parameter	Detail
Pressure Range	0-1 bar up to 0-2500 bar (Specific ranges available)
Accuracy Class	±0.25% or ±0.5% F.S. (Grade 3A/4A)
Nominal Size	DN 150 mm (6"), 250 mm (10") (Large dial for resolution)
Wetted Parts Material	Stainless Steel 316L (Standard)
Case Material	Stainless Steel 304 (Solid Front/Blow-out Back)
Process Connection	1/4" NPT or 1/2" NPT (Rear or Lower)
Fill Medium	Dry (Standard) or Silicone/Glycerin (Optional for dampening)

Typical Use Cases

Calibration Laboratories: Use as the primary reference standard (Working Standard).
Pressure Testing: Hydrostatic pressure testing of vessels and pipelines.
OEM Quality Control: Final inspection and verification of manufactured products.
Process Validation: Critical, high-stakes measurements in power generation or aerospace.
Field Audits: Technicians verifying accuracy of in-line process gauges.

Competitive Benefits

Unmatched Reading Precision: Fine pointer and mirror scale ensure minimal reading error.
Robust Traceability: Supplied with comprehensive test and calibration certificates, critical for regulatory compliance.
Safety Focused: Designed with a solid front to protect the operator in case of Bourdon tube failure.
High Durability: All-stainless steel construction provides excellent longevity in industrial environments.

Payment and Shipping Details

We accept T/T payment in full for these high-precision instruments. For high-volume calibration contracts, credit terms may be negotiated. Shipping is arranged via secure, insured transport, using terms like CIP (Carriage and Insurance Paid To) to ensure delivery integrity. Lead time is 15-20 days, as each gauge undergoes an extended stabilization and multi-point calibration procedure prior to shipment.

Frequently Asked Questions

Q: What is the purpose of the mirror scale?
A: The mirror scale eliminates parallax error. The operator ensures the pointer is perfectly aligned with its reflection, guaranteeing they are looking straight down onto the pointer for the most accurate reading.

Q: Can I order these gauges vacuum-calibrated?
A: Yes, we offer compound ranges that cover both pressure and vacuum or dedicated high-resolution vacuum gauges specifically calibrated for testing applications.

Q: How frequently should a test gauge be re-calibrated?
A: Due to their critical nature, professional calibration standards recommend test gauges be re-calibrated annually, or more frequently if used in demanding environments or subjected to overpressure.

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Precision Test and Calibration Pressure Gauges Manufacturers

Wuxi Huihua Special Instrumentation Co., Ltd. was established in December 2001, the registered capital is 5 million yuan, the existing staff of more than 50 small and medium-sized joint-stock enterprises.
The company specialises in the production of various types of special instruments, alternative to the localisation of imported instruments.To seismic pressure gauge, seismic electric contact pressure gauge, stainless steel pressure gauge, diaphragm corrosion-resistant pressure gauge, marine pressure gauge and other series as the main products. On the basis of field instruments, we have developed various kinds of pressure transmitters, pressure controllers, digital pressure gauges and so on. There are more than 30 series and 3000 specifications. Products are widely used in petroleum, chemical, paper, metallurgy, mining, chemical fibre, electric power, food, environmental protection, rubber and plastic, hydraulics and many other industries, and more than 2,000 domestic customers to establish a friendly relationship with the national large and medium-sized enterprises to establish a good partnership, won the majority of users praise, and set up a corporate brand image.