PM800A series intelligent pressure transmitter

- High-stability composite silicon sensors are adopted

- Wide measurement range covering 0-0.5kPa to 100MPa

- Two-wire system, 4-20mA analog output, HART® protocol digital communication

- The smart LCD liquid crystal meter head is backlit

- It features both remote transmission and local zero point and range adjustment

- Complete range of varieties, high precision and good stability

- The flameproof enclosure structure has a strong ability to resist frequency conversion interference

- High static pressure overload protection

- It has no mechanical transmission components and is shock-resistant and durable

- Surge protection circuit design

1. Oil and Gas (Upstream, Midstream, Downstream)

Wellhead/downhole pressure monitoring: Real-time monitoring of wellhead pressure and downhole pressure of oil Wells and gas Wells (special models are required), optimizing production efficiency and predicting reservoir dynamics.

Pressure control of oil and gas separator: Precisely control the working pressure of the separator to ensure effective separation of oil, gas and water.

Oil/gas pipeline

Trunk line pressure monitoring: Ensure that pipelines operate under safe pressure and detect leaks (abnormal pressure drops).

Station pressure control: It is used for monitoring and controlling the inlet and outlet pressure of pump stations and compressor stations to protect equipment.

Pigging device tracking: Positioning is achieved by detecting the pressure changes when the pigging device passes through.

Liquid level and pressure measurement of storage tanks (crude oil, refined oil products, LPG/LNG) :

Provide precise liquid level information (via differential pressure or static pressure) for inventory management.

Monitor the pressure in the gas phase space of the storage tank to prevent overpressure or vacuum and ensure the safety of the storage tank (often used in conjunction with a breather valve).

Refining and chemical plants

Reactor pressure: A key process parameter that directly affects reaction rate, selectivity and safety. The high precision and stability of PM800A are of vital importance.

Fractionating column/refining column pressure: Precise control of column pressure is the core to ensuring separation effect and product quality.

High-pressure heat exchanger: Monitor the pressure difference between the tube side and shell side to prevent overpressure damage.

Inlet and outlet pressures of compressors and pumps: Protect the equipment from surging (for compressors) or dry running (for pumps).

Torch system pressure monitoring: Ensure normal back pressure of the torch system and safe discharge.

2. Chemical Engineering (Basic Chemicals, Fine Chemicals, Petrochemicals)

Pressure control of synthetic reaction vessels/reactors: Many chemical reactions are pressure-sensitive (such as polymerization, hydrogenation, oxidation), and the PM800A provides reliable pressure data for precise control and safety interlocking.

Pressure control in distillation/evaporation/crystallization processes: Pressure directly affects the boiling point and phase equilibrium, and is a key parameter in separation and purification.

High-pressure polymerization autoclave: Precisely controls extremely high pressure in the production of PE, PVC, etc.

Filter/filter press pressure monitoring: Monitor the filtration pressure, optimize the operation cycle, and protect the equipment.

Solvent storage tanks and conveying systems: Monitor the liquid level (differential pressure method) and gas phase pressure of flammable and explosive solvent storage tanks.

Public utilities: Steam network pressure, nitrogen/instrument air pressure monitoring.

3. Metallurgy (Steel, Non-ferrous Metals)

Blast furnace/hot blast stove system

Hot air pressure measurement and control (directly affecting furnace condition and efficiency).

Gas pressure control at the top of the furnace.

Pressure monitoring of the cooling water system (protecting expensive furnace bodies).

Continuous casting machine

Crystallizer liquid level control (commonly used differential pressure transmitter).

Hydraulic station pressure control (driving sector sections, pressing down cylinders).

Rolling mill: Monitor and control rolling force (through hydraulic cylinder pressure), AGC system pressure, and lubrication system pressure.

Oxygen production/air separation unit: Monitor the pressure of each stage of the compressor, the pressure of the distillation column, and the pressure and liquid level of the liquid oxygen/liquid nitrogen storage tank.

Smelting furnace/electrolytic cell: Monitor the pressure of protective gas or the pressure of the electrolyte circulation system.

Dust removal system: Monitor the inlet and outlet pressures of the fan and the differential pressure of the bag filter (to determine the blockage situation).

4. Electricity (Thermal power, nuclear Power, new energy)

Boiler system

Drum pressure (core parameter, affecting saturation temperature).

Main steam pressure/reheat steam pressure (affecting turbine efficiency and safety).

Water supply pressure, fuel oil/gas pressure.

Negative pressure in the furnace (affecting combustion safety and efficiency).

Steam turbine: Monitor the pressure of each stage of extraction steam, sealed steam pressure, lubricating oil pressure, and EH oil pressure (electro-hydraulic regulation system).

Condenser vacuum degree: (using absolute pressure or negative pressure transmitters) is a key indicator of steam turbine efficiency.

Desulfurization and denitrification system: Monitor the liquid level (differential pressure) of the absorption tower, the pressure of the slurry circulation pump, and the pressure of the ammonia/urea system.

Nuclear power: Pressure and liquid level measurement applied in primary circuits, secondary circuits, and auxiliary systems, with extremely high requirements for safety levels and reliability.

Hydropower station: Monitor volute pressure, tailpipe pressure, governor oil pressure, and bearing lubricating oil pressure.

5. Food and Beverage & Pharmaceutical & Biotechnology (Emphasizing Hygiene and explosion-proof requirements)

Process areas that meet explosion-proof requirements: Areas where alcohol vapor (such as brewing, extraction), dust (such as milk powder, flour, starch), and solvents (such as extraction, cleaning) exist.

CIP/SIP system: Monitor the circulation pressure of the cleaning solution/sterilization steam to ensure the effectiveness of the process. The explosion-proof certification of PM800A ensures safety in environments where alcohol vapor or high temperatures may exist.

Fermentation tank/bioreactor: Monitor the pressure inside the tank (especially for anaerobic fermentation or pressurized fermentation) and the pressure of the jacket/coil. Explosion-proof design is designed to deal with possible organic vapors or disinfectant environments.

Homogenizer/autoclave: Precisely monitor and control extremely high process pressures (such as UHT sterilization, cell disruption).

Solvent recovery/extraction system: In processes involving flammable solvents such as ethanol and hexane, safety monitoring pressure is required.

Compressed air/inert gas systems: Key system pressure monitoring for providing power in clean environments.

Liquid nitrogen/carbon dioxide storage tanks: Monitor pressure and liquid level (low-temperature type compatibility is required).

Hygienic design compliance: Although PM800A itself may not be a hygienic process connection, it can be applied to the cleaning process through a hygienic isolation diaphragm or flange.

6. Papermaking

Pressure control of the digester/digester: A key parameter in the pulping process.

Paper machine

Steam pressure control of the drying cylinder (affecting drying efficiency and paper quality).

Hydraulic system pressure (driving the pressure roller and scraper).

Pressure of the pulp box (affecting the uniformity of the paper).

The vacuum degree (negative pressure measurement) of vacuum pressure rollers/vacuum pressing rollers.

Black liquor/chemical recovery boiler: Pressure monitoring points similar to those of electric boilers (drum, steam, negative pressure in the furnace).

Pressure monitoring of slurry conveying pumps.

7. Mechanical manufacturing

Hydraulic and Lubrication Systems: Core Applications! Monitor the pressure of the main oil circuit, control oil circuit and lubrication points to ensure the normal operation of the equipment and protect the pumps, valves and actuators.

Test bench/test bench: It is used for pressure performance testing and factory inspection of products such as engines, pumps, valves, and pressure vessels. The high precision and stability of PM800A provide reliable data.

Pneumatic system: Monitor the pressure of the main compressed air pipeline and key branch pipelines.

Injection molding machines/die-casting machines: Monitor and control clamping force, injection pressure, and holding pressure.