High Accuracy pressure transmitter for Process Control

High Accuracy pressure transmitter solutions for demanding industrial applications. The DR3403 series delivers reliable performance.

The Problem: VFD Noise and Bulky Transmitters

During a night shift, fluctuating pressure readings baffled our team. The process was steady, but the signal from our pressure transmitter was unreliable. The root cause? A bulky transmitter placed too close to a variable frequency drive (VFD), causing electromagnetic interference (EMI). The traditional model’s large size forced a poor installation location, leading to a 20% signal drop whenever the VFD ramped up.

The Physics of EMI in Pressure Measurement

VFDs generate high-frequency electrical noise that can couple into analog signals, especially when the transmitter is oversized and cannot be positioned away from interference sources. The noise corrupts the 4-20mA loop, causing erratic readings. A compact pressure transmitter, with its smaller footprint, allows optimal placement away from EMI sources, preserving signal integrity.

The Solution: A Miniature Pressure Sensor

We replaced the bulky unit with the DR3403E, a space saving pressure transmitter designed for tight OEM installations. Its miniature, space-saving design enabled placement in an EMI-free zone, while high-performance pressure sensing ensured accurate readings. Within minutes, the signal stabilized—jitter dropped from ±5% to ±0.1%.

Key Specifications

• Miniature, space-saving design
• High-performance pressure sensing
• Robust stainless steel construction
• Standard 4-20mA output
• Wide operating temperature range

Reflection

How much is your process costing you due to a transmitter that’s too large for its environment? Learn more about the DR3403E compact pressure transmitter and see if it fits your application.

Tags: #pressuretransmitter #DR3403