Level and Pressure Measurement

Series M8 Cool HB Ultra-fast High-temperature Pressure Transmitter

Series M8 Cool HB Ultra-fast High-temp Pressure Transmitter

The Series M8cool HB pressure transmitters, with their 0…50 kHz dynamic range and M8 pressure connection, are optimized both for dynamic (i.e. fast pressure pulsations at close proximity) as well as static pressure measurements. The sensor design enables excellent media compa­tibility and supports measurements at temperatures of up to 1000 °C with appropriate cooling.

Electronics:
The circuitry for the Series M8cool HB was specifically developed to take advantage of the high dynamic range of the M5 sensor head. The signal path remains entirely analog, although it is readjusted in real time by means of a high-precision digital compensation circuit. This ensures the full dynamic range of the sensor and the accuracy of the measurement signal are maintained across the entire 0…50 kHz bandwidth. With a temperature range of -40 to +125 °C, the remote signal converter satisfies the exceptional demands associated with hostile environments; e.g., engine test benches. The sensor head alone, i.e., without the remote signal converter, is available for those applications better served by a sensor with 80 mV output (@ 1 mA supply). Included with this configuration is a calibration card providing the user with actual test data taken from the sensor during factory calibration (Series M8cool).

Sensor Technology:
The Series M8cool sensor incorporates a stable silicon sensor which is backside-soldered ­directly to a supporting element designed for excellent fluid dynamics. This construction eli­minates the disadvantages of sealants, adhesives, separating membranes or capillary tubes in high temperature environments. The practically-flush connection to the measurement media is critical to the excellent dynamic range of 0…50 kHz. The micromechanical design delivers absolute measuring ranges of 3, 10 and 30 bar, overpressure protection of up to 5 times measuring range and effective isolation of mounting forces.

Performance Characteristics

  • Sensor head capable of exposure to 200 °C, with cooling up to 1000 °C
  • The internal cooling channels act more efficiently than a conventional cooling adapter
  • Broad compensated temperature range of -40…180 °C)
  • Excellent dynamic response, up to 50 kHz (pulsation measurements)
  • Insensitive to shock and vibration
  • Extremely compact design, pressure connection: M8 x 0,75 fine thread
  • Teflon FEP cable with IP67 ferrule, suitable for use on test benches
  • Pressure ranges of 3 bar, 10 bar and 30 bar (absolute)
Pressure Ranges 0… 3 bar, 0…10 bar, 0…30 bar
Accuracy ± 0,1 %FS
Total Error Band ± 1,0 %FS @ -40…180 °C sensor temperature

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