Measure Differential Pressure Without Plugged Impulse Lines Diaphragm Seal Differential Pressure Transmitter is designed for pressurized vessels, reactors and lines containing corrosive, viscous, sanitary or high-temperature media. Conventional impulse lines can plug, freeze or expose the transmitter to damaging process conditions, but remote seals add temperature and response effects. Matched diaphragm seals transfer pressure through fill fluid and allow the transmitter to remain away from the process. Isolate Corrosive, Viscous and Hot Processes The transmitter compares pressure at its high and low ports and converts the difference into a stable process signal. Differential pressure can indicate filter loading, infer flow across a primary element or measure level in pressurized vessels. Gallop lists accuracy choices down to ±0.075 percent, stability of ±0.1 percent over three years, LCD or OLED displays, IP67 housing and a selection of 316L, tantalum, Hastelloy C or Monel measuring diaphragms. Explosion-protected configurations are also listed. Diaphragm material, size, coating, fill fluid, capillary length and connection must be selected together for the span and temperature range. This page can naturally support buyer terms such as differential pressure transmitter, smart pressure measurement, filter monitoring, remote diaphragm seal and HART process transmitter. Engineer Both Seals as One Balanced System Keep high- and low-side capillaries matched and similarly routed, control ambient gradients and calculate zero elevation or suppression before calibration. Request an assembled and calibrated system with complete seal specifications, then preserve the mounting orientation and capillary support shown in the approved drawing. Impulse-line plugging, trapped gas or liquid, unequal heat tracing and incorrect zero elevation can dominate the error budget. Final performance must be confirmed for the assembled transmitter, seals and accessories. Gallop has focused on flow and level instrumentation since 2005 and presents in-house R&D, ISO 9001:2015 and CE evidence. Ask for the exact datasheet, certificate and calibration record that apply to the quoted model.