SMAR LD301 Pressure Transmitter Inquiry Item

This SMAR LD301 is a capacitive intelligent transmitter of SMAR LD300 series. It can measure differential pressure, gauge pressure, absolute pressure, liquid level and open channel flow. It adopts capacitance sensing principle, outputs 4~20mA analog signal with HART digital communication. It supports 16-point custom linearization table, suitable for horizontal tank volume conversion, V-notch and Parshall flume open channel flow calculation. PID control function is optional, can realize local regulation without extra controller. The wetted diaphragm can choose 316L, Hastelloy C276, Monel and Tantalum. It has explosion-proof certification, widely used in petrochemical, water treatment, refining and chemical process measurement loops.

Specifications

Model: LD301 Brand: SMAR Communication: 4~20mA + HART protocol Accuracy: ±0.075% FS Turndown ratio: 120:1 Sensing principle: Capacitive Wetted diaphragm: 316L / Hastelloy C276 / Monel / Tantalum optional Display: Optional local LCD indicator Certifications: CE, ATEX, IECEx Protection grade: IP66

Components & Troubleshooting

Capacitive sensing capsule, main electronic board, LCD display module, aluminum alloy housing, terminal wiring cavity, isolating diaphragm and filling liquid. Common faults: measurement drift, HART communication offline, zero point offset, diaphragm damage caused by overpressure, display failure.

Disclaimer

This spare part shall be installed, calibrated and maintained by qualified instrument technicians. Confirm medium compatibility before commissioning.