Level and Pressure Measurement

Series 4LD / 9LD Digital OEM Pressure Transmitters

Series 4LD / 9LD Digital OEM Pressure Transmitters

With the D-line, Keller introduces a unique combination of an exceedingly robust industrial pressure transducer and the popular I2C microcontroller interface. Pressure transmitters with this interface are commonly available only in consumer-grade plastic or ceramic housings, where compensation parameters are merely stored in an integrated memory. The D-line OEM transmitters, however, have an unprecedented embedded digital signal processing (DSP) core for the compensation and normalization of the output values.

Performance Features

  • Ultra low power consumption, optimized for battery powered applications
  • 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 200 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 1...200 bar (abs./rel.) 
--> see data sheet
Dimensions 4 LD: ø 11 x 4,2 mm
9 LD: ø 19 x 5 mm
--> others see data sheet
Accuracy max. 0,15 %FS

Download Datasheet

Download D-Line Communication Protocol

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