Why Calendar Based Filter Replacement Costs You Money

Pressure switch solutions for demanding industrial applications. The DR3513 series delivers reliable performance.

At 3 AM, I was reviewing pressure readings in the plant’s main filtration system when a sudden drop caught my attention—down to zero. The system was operating normally, but the filter read zero, signaling a critical issue: the filter was completely clogged, yet the system continued running, risking damage.

The problem lay in how we traditionally monitored filter life. We based changes on time intervals rather than actual loading conditions, which often led to either unnecessary replacements or catastrophic failures. Overloading filters can reduce their lifespan by up to 50%, and without accurate differential pressure (DP) measurements, we were essentially flying blind.

Why Differential Pressure Sensing Matters

Filter clog detection relies on measuring the pressure drop across the filter. As particles accumulate, the pressure differential increases. By using a differential pressure switch like the DR3513, you can set a precise threshold—when the DP reaches that point, the switch triggers an alert or automatic change. This eliminates guesswork and prevents both premature replacements and unexpected failures.

Key Specifications

• Differential pressure sensing – directly measures the pressure drop across the filter
• Adjustable setpoint – customize the trigger point for your specific application
• Visible differential scale – see the current DP at a glance
• High reliability with no moving parts – no mechanical wear, long service life
• Weatherproof enclosure option – suitable for outdoor or harsh environments

We installed the DR3513 DP switch across our facility. Now, filter changes happen only when needed—based on actual clogging, not arbitrary schedules. The result? A 30% reduction in filter costs and zero unplanned downtime.

How much money are you wasting on premature filter changes across your facility? Download the DR3513 datasheet to see how much you could save.

Tags: #pressureswitch #IndustrialAutomation #PressureSensor #DR3513