Name: Endress+Hauser PMC71 Original Pressure Transmitter 0.05% High Accuracy PMC71 Original Smart Pressure Transmitter SIL 2/3 Certified
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HOME > PRODUCTS > TOP BRANDS > Endress+Hauser > Endress+Hauser PMC71 Original Pressure Transmitter 0.05% High Accuracy PMC71 Original Smart Pressure Transmitter SIL 2/3 Certified

Endress+Hauser PMC71 Original Pressure Transmitter 0.05% High Accuracy PMC71 Original Smart Pressure Transmitter SIL 2/3 Certified

Product Introduction
The Cerabar PMC71 from Endress+Hauser is a high-performance digital pressure transmitter designed for precise measurement of gauge and absolute pressure in challenging industrial environments. Engineered with an oil-free, capacitive ceramic measuring cell, it delivers exceptional reliability, accuracy, and long-term stability for pressure, level, volume, or mass monitoring in liquids and gase.

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Product Description

The Endress+Hauser Cerabar PMC71 is a high-performance, digital pressure transmitter specifically engineered for precise and reliable measurement of gauge pressure and absolute pressure in a wide range of industrial and hygienic applications. As a core product in Endress+Hauser’s Cerabar S series, the PMC71 stands out for its oil-free, capacitive ceramic measuring cell, robust construction, and advanced safety features, making it an ideal solution for demanding process environments where accuracy, stability, and operational safety are critical. Designed to adapt to diverse media and harsh conditions, this transmitter delivers consistent performance across industries, supporting efficient process control, reduced maintenance costs, and enhanced operational reliability.

1. Product Overview

The Cerabar PMC71 is a digital pressure transmitter tailored for measuring pressure, level, volume, and mass in liquids, gases, and steam across process engineering and process measurement technology fields. Its core design revolves around a dry, oil-free ceramic measuring cell (Ceraphire®), which eliminates the risk of oil contamination in sensitive processes and ensures superior chemical and mechanical stability. The transmitter features a modular design, allowing for easy replacement of sensors, displays, or electronics, thereby reducing downtime and maintenance costs. With a wide range of process connections, housing options, and communication protocols, the PMC71 offers exceptional flexibility to meet the unique requirements of various industrial sectors, from chemical processing to food and beverage production.

2. Measuring Principle

The PMC71 utilizes a capacitive measuring principle with a ceramic process isolating diaphragm (Ceraphire®), a 99.9% high-purity aluminum oxide (Al₂O₃) membrane that ensures optimal performance and durability. As a dry sensor, the process pressure acts directly on the robust ceramic diaphragm, causing it to deflect. This deflection induces a pressure-dependent change in capacitance between the electrodes of the ceramic substrate and the process isolating diaphragm, which is then measured and converted into a precise electrical signal for further processing. The measuring range of the transmitter is determined by the thickness of the ceramic diaphragm, allowing for flexible calibration to meet specific application needs.

A key advantage of this measuring principle is its inherent overload resistance, with the ceramic sensor guaranteeing resistance up to 40 times the nominal pressure (overpressure limit, OPL), depending on the selected components. Additionally, the dry ceramic design makes the PMC71 highly suitable for vacuum applications and processes involving corrosive or abrasive media, as it eliminates the risk of fill fluid leakage and contamination.

3. Key Technical Specifications

3.1 Measuring Performance

Measuring Type: Gauge pressure, absolute pressure, and vacuum measurement
Measuring Range: 100 mbar to 40 bar (1.5 psi to 600 psi) for standard configurations; absolute pressure with a maximum overpressure limit of 60 bar (900 psi)
Accuracy: Standard version ±0.075% of upper range limit (URL); "Platinum" version up to ±0.025% of URL for highest precision requirements
Long-Term Stability: 0.05% of URL per year, ensuring consistent performance over extended operational periods
Turn-Down Ratio: Up to 100:1, with higher ratios available upon request, allowing for flexible adaptation to changing process conditions
Maximum Measurement Distance: 400 m (1312 ft) H₂O for level measurement applications

3.2 Operating Conditions

Process Temperature: -40°C to +150°C (-40°F to 302°F) without diaphragm seals; up to 400°C (752°F) when equipped with typical diaphragm seals for high-temperature applications
Ambient Temperature: -40°C to +85°C (-40°F to 185°F), ensuring reliable operation in extreme environmental conditions
Supply Voltage: 4...20 mA HART: 10.5...45 V DC; Ex ia: 10.5...30 V DC; PROFIBUS PA/Foundation Fieldbus: 9...32 V DC
Protection Class: IP66/67, making it suitable for harsh ambient conditions with dust, moisture, and other contaminants

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