Chemical Industry Pressure Measurement

-- Steady & Reliable Manufacturer --

Brief Description

Instruments for the Chemical Industry require exceptional resistance to corrosive media, high temperatures, and high pressures. Our specialized products ensure both reliable measurement data and strict operator safety compliance in highly aggressive process environments.

In-depth Overview

Measurement devices in chemical plants must manage volatile organic compounds, strong acids, and caustics. This necessitates the use of exotic wetted materials (such as Hastelloy, Monel, PTFE, and Tantalum) and specialized construction, primarily Diaphragm Seal Systems. Furthermore, many areas require Explosion Proof (Ex d) or Intrinsically Safe (Ex i) certifications to prevent ignition of flammable atmospheres. We provide complete solutions—from highly corrosion-resistant pressure gauges to smart HART transmitters—that adhere to rigorous industry safety standards.

Specification

Parameter	Details
Wetted Parts Material	SS 316L, Hastelloy C-276, Tantalum, PTFE-lined
Pressure Range	Vacuum up to 1,000 bar (process specific)
Safety Standards	ATEX / IECEx / Exd / Exi compliance (where applicable)
Sealing Type	Diaphragm Seal (Flanged, Threaded, or Sanitary)
Gauge Case	Stainless Steel (often Solid Front/Blow-out Back)
Instrumentation Types	Gauges, Transmitters, Switches
Connection Type	Threaded or Flange (DIN, ANSI)
Fill Fluid	Chemically Inert Oils (e.g., Halocarbon)

Applications

Acid and Alkali Production: Monitoring pressure in reactors and storage tanks containing corrosive chemicals.
Polymer Manufacturing: Measuring high-viscosity or crystallizing monomers and polymers using flush diaphragms.
Fertilizer Plants: Instruments designed to resist attack from ammonia, phosphoric acid, and nitric acid environments.
Solvent and Volatile Compound Storage: Utilizing certified explosion-proof transmitters for safety and regulatory reasons.

Key Advantages

Maximum Corrosion Resistance: Specialized alloys significantly extend instrument lifespan in harsh chemical contact.
Certified Safety: Instruments carry necessary Ex certifications, ensuring compliance and minimizing explosion risk.
Process Isolation: Diaphragm seals prevent instrument failure due to aggressive or clogging media.
Long-Term Reliability: Built for continuous, heavy-duty operation in chemically challenging environments.

Payment and Shipping

We primarily accept T/T or L/C (Letter of Credit) for specialized chemical orders. Due to the requirement for exotic materials and specific certifications, lead times are typically 4-6 weeks. All instruments are shipped with complete material certificates (MTRs) and safety documentation, using heavy-duty export packing to guarantee integrity and ease of customs clearance for hazardous area equipment.

Frequently Asked Questions

Q: Why is Hastelloy C-276 often recommended for chemical applications?
A: Hastelloy C-276 is a nickel-molybdenum-chromium alloy known for its near-universal resistance to corrosive environments, including wet chlorine gas, hypochlorite, and chlorine dioxide solutions. It's an excellent balance of cost and performance against many aggressive chemicals.

Q: Do Diaphragm Seals require special maintenance in chemical service?
A: Regular visual inspection for diaphragm erosion or leakage is recommended. Unlike a standard gauge, the seal assembly may require periodic replacement if the process media rapidly corrodes the diaphragm surface.

Q: Can these instruments handle both high pressure and high temperature simultaneously?
A: Yes, but this requires specialized design. For example, a pressure gauge assembly would use a metallic diaphragm seal made of Inconel with a capillary for temperature separation, combined with a high-pressure Bourdon tube system.

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Chemical Industry Pressure Measurement 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.