Differential Pressure Transmitter, Deltabar S FMD77

Measuring ranges         : +100mbar to +16bar

Accuracy                             : ±0.075%

Process Temperature       : -70 to +400°C (-94 to +752°F)

Protection                           : IP66/67/68

Process connections    : Threads and flanges


Level, content or volume measurement in pressurised vessels or vessels under vacuum


Differential Pressure Transmitter for Level Applications

The metallic sensor provides outstanding long-term stability and single-sided overpressure resistance.
It can be supplied with a wide range of process connections and fill fluids.


  • Long term stability 0.05% per 5years minimises recalibration
  • Integrated linearisation of vessels (horizontal or vertical)
  • HART, PROFIBUS and FOUNDATION Fieldbus compatible
  • Menu-guided display with plain text – no error codes to decipher
  • No software or handheld communicators required

IEC61508 up to SIL3

Measuring range 10 mbar…16 bar / TD 100:1 (larger TD on request)
Output 4…20mA HART, PROFIBUS PA or FOUNDATION Fieldbus
Process temp -70°C…400°C
Ambient temp -40°C…85°C
Protection IP66/67/68
Power supply 10.5…45V DC standard, 10.5…30V DC for EExi 9… 32V DC for PA and FOUNDATION Fieldbus
Cable connection Gland M20x1.5, Harting connector, ½” NPT, 7/8” FOUNDATION Fieldbus connector, M12
Accuracy (including hysteresis and reproducibility up to TD 15:1) 0.075% (transmitter) + chemical seal error
Housing Cast aluminium with polyester based coating, (stainless steel 316L optional)
Process connection ANSI/DIN flanges out of 1.4435 (316L), Alloy C276, Monel, tantalum etc.
Compensation side Standard DP connection out of 316L. Other materials on request
Process membrane 1.4435 (316L), Alloy C276, Monel, Tantalum, PTFE foil etc. Fill fluids (chemical seal) Silicon oil, vegetable oil (FDA), high temperature oil, inert oil fillings

For more information, specific application advice or to order,

Please Contact us on +91 8367005552 or +91 9063008734

email: info@sigmaautomation.co.in or instsales@sigmaautomation.co.in

Technical Information for Deltabar S PMD75, FMD77, FMD78

TI for  Deltabar S PMD75, FMD77, FMD78