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Keller 7LD Pressure trasnmitter
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The pressure transmitters of the 7LD series use the chip-in-oil technology developed by KELLER, uniting a pressure measuring cell, digital temperature compensation and signal processing in a compact housing made of stainless steel or Hastelloy. The transmitters are extremely resistant to environmental influences and delivery highly accurate measurement results as a digital output signal. The I2C interface and the low supply voltages make it easy to integrate in microcontroller-based systems. The extremely low power consumption is ideal for battery-operated devices. The D line is perfect for IoT solutions.

  • Ultra low power consumption, optimised for battery-powered application

  • Hermetically protected sensor electronics – extremely resistant to environmental influences

  • Ultra-compact, robust housing made from stainless steel (optional Hastelloy C-276)

  • No external electronics for compensation or signal processing

  • Extremely accurate, outstanding long-term stability, no hysteresis

  • Pressure ranges of 1 bar to 1000 bar

  • Easy to integrate into microcontroller-based systems

  • Internal two-chip solution with pressure sensor and signal processing separation provides a high degree of flexibility


Pressure Ranges 0…3 to 0…200 bar
Accuracy ±0,15 %FS
Total Error Band ±0,7 %FS @ -10…80 °C
Interfaces I2C
Dimensions ⌀ 15 mm x 5 mm

For more information please click here

Series 4LD…9LD - Data Sheet

Installation Information OEM Pressure Sensors and OEM Pressure Transmitters - Manual

Communication Protocol I2C for D-Line Pressure Transmitters - Document

KELLER Bus / Communication Protocols and Code Samples Overview - Document

Cryoegg – Glacier Research With KELLER - Technical Article

OEM Transmitters: All-Inclusive - Technical Article

Pressure Transmitters and Transducers - Brochure