Product Overview

The HMPCM301 flameproof pressure transmitter is specifically designed for use in hazardous areas and has obtained Exd Ⅱ BT6 flameproof certification.  This transmitter features an integrated, fully welded stainless steel structure, with multiple stainless steel welding processes to meet isolation flameproof requirements. It combines a highly stable silicon piezoresistive pressure sensor with a high-performance dedicated amplifier circuit. The unit offers high strength, compact size, excellent vibration resistance, and is designed to resist mold and moisture, ensuring long-term reliability in harsh environments.  It is widely used in various hazardous locations such as petroleum machinery, chemical machinery, pumps and compressors, power generation, boilers, and natural gas applications.  

Features

• All stainless steel, fully welded construction

• High strength, vibration resistant

• Isolation flameproof certification from the National Quality Supervision and Inspection Center for Explosion-Protected Electrical Products

• Wide measuring range, capable of measuring absolute pressure, gauge pressure, and sealed reference pressure

• Excellent sealing, enabling long-term stable operation

• Advanced structure ensures product reliability

• Widely used in flammable and explosive environments

Applications & Industries

• Equipment integration

• Hydraulic and pneumatic equipment

• CNG transmission pipeline networks

• Compressors

• Natural gas filling station equipment

Important Notes:

1. Never touch the diaphragm with hard objects, as this may cause damage to the isolation diaphragm.

2. Before installation, please carefully read the product user manual and verify all relevant product information.

3. Strictly follow the specified wiring method; otherwise, it may cause product damage and other potential failures.

4. Incorrect use may result in hazards and personal injury.  

Important Notes:

1. Do not misuse this document.

2. The information in this selection guide is for reference only. This document should not be used as a product installation guide.

3. Complete installation, operation, and maintenance information is provided in the product manual.

4. Improper use may result in hazards and personal injury.  

Selection of Damping Device

Applications:

Cavitation, water hammer, and pressure spikes may occur in air or liquid systems where flow velocity changes. Examples include rapid valve closure or pump start/stop. These issues can arise at both the inlet and outlet, even at relatively low operating pressures.

Medium Conditions:

In liquids containing particles, nozzle clogging may occur. Vertically installing the transmitter can minimize clogging risk, as fluid flow is primarily limited to the initial startup phase. The volume behind the nozzle is fixed, and the nozzle orifice is relatively large (1.2 mm).  The influence of medium viscosity on response time is minimal. Even at viscosities up to 100 CST, the response time does not exceed 4 ms.  

Example: HMPCM301-70kGB1C3I6

This indicates the model is HMPCM301, with a measuring range of 0-70kPa, pressure type gauge pressure, power supply 24V, output signal 4-20mA, process connection G1/4, and threaded connection M20×1.5.

Ordering Tips

1. When selecting the model, please ensure compatibility between the measured medium and the wetted parts of the product.

2. If you have special requirements regarding product appearance or performance parameters, our company can provide customization.