dBi Profibus PA Transducer Series

Simple, convenient and accurate ultrasonic level measurement

dBi Profibus PA Transducer product image

The Pulsar dBi Profibus PA Transducer Series are a range of self-contained, intelligent non-contacting ultrasonic level measurement transducers which make use of Profibus PA communication protocols. Four range choices are available with either 3m, 6m, 10m or 15m range (10ft, 20ft, 33ft or 49ft), all of which take simplicity, convenience and accuracy to a new level.

Can be specified in various formats to suit the application, for example flanged, PTFE coated for corrosive applications, fitted with foam face or submergence shield and with threaded noses for easy installation.

High data speeds and exceptional accuracy

Pulsar use the high data speeds available with Profibus PA to provide full digital communications from a DATEM-enabled transducer. The dBi Profibus PA Transducers comply fully with communications standards IEC 61158 and Profibus PA profile 3.0.2 and provide a very high resolution to give exceptional accuracy and a rapid response time of approximately 1 second.

Programming dBi Profibus PA Transducers

Pulsar's dBi Profibus PA Transducers can be programmed either using Pulsar's PC Software or using PLC/HMI with Profibus network that:

  • supplies GSD Version 3.0 with pre-defined parameter blocks in cyclic or non-cyclic modes or;
  • supplies EDDL to provide full support for acquiring/logging of echo traces, diagnostics and full maintenance I&M functions according to IEC 61804-3 standards or;
  • supplies (on request) FDT/DTM direct to HMI software to provide enhanced diagnostic/commissioning capabilities.

DATEM Echo Processing

Pulsar's dBi Transducer Series with Profibus PA communication protocol features Pulsar's world-leading DATEM echo processing software. DATEM, Digital Adaptive Tracking of Echo Movement, allows the system to zero in on the echo from true target and follow it as it moves up and down the vessel, ignoring the stationary echoes from other elements in the measurement path. Pulsar's Profibus PA dBi Transducer Series give reliable and accurate measurement in applications where other manufacturer's equipment would not work.


dBi Profibus PA Transducers Data Sheet dBi Profibus PA Transducer Manual dBi Profibus PA Transducer Case Studies

Additional manuals are available for this product.

Full listing of Pulsar user manuals.

Download available: Profibus PA GSD file..


  • Liquids and solids measurement
  • Level and volume measurement
  • Profibus PA communication protocol requirements
Weight: dBi3: 1kg (2.2lbs), dBi6: 1.2kg (2.7lbs), dBi10, 1.3kg (2.9lbs), dBi15: 1.4kg (3.1lbs)
Dimensions & mountings: dBi3: 77mm dia x 134mm high (3 x 5.3inch). Rear thread 1” BSP/NPT
dBi6 and dBi10: 86mm dia x 121mm high (3.38 x 4.75inch). Rear thread 1" BSP/NPT
dBi15: 86mm dia x 135mm high (3.38 x 5.32inch) Read thread 1" BSP/NPT
Performance characteristics: (NB beam angles at -3dB. All beam angles are inclusive but give an effective beam angle of <3º) dBi3: range 0.125 - 3m (5 inch to 10 feet) frequency 125kHz
beam angle <10º
Resolution 1mm (0.04 inch)
Accuracy 2mm (0.08 inch)
dBi6: range 0.3 - 6m (1 foot - 20 feet) frequency 75kHz
beam angle <10º
Resolution 2mm (0.08 inch)
Accuracy 4mm (0.16 inch)
dBi10: range 0.3 - 10m (1 foot - 33 feet) frequency 50kHz
beam angle <10º
Resolution 3mm (0.12 inch)
Accuracy 3mm (0.12 inch) up to 6m (20ft) range & 6mm (0.24 inch) over 6m range
dBi15: range 0.5 - 15m (20 inch - 49 feet) frequency 41kHz
beam angle <8º
Resolution 5mm (0.2 inch)
Accuracy 5mm (0.2 inch) up to 10m (33ft) range & 10mm (0.39 inch) over 10m range
Housing material: Valox 357 PBT (Polybutylene terephthalate)
Temperature compensation: Internal temperature sensor, +/- 0.5ºC/F
Transducer cable requirements: Twin screened. Integral cable length 5, 10, 20 or 30m
Operating temperature range: -40ºC to +80ºC process temperature (-40ºF to +176ºF)
Ingress Protection: IP68 to BS EN 60068-2-17:1995 and BS EN 60529 (Nema 6P available)
Approvals: See EC Declaration of Conformity in the manual
Hazardous Area Approval: ATEX; Ex ia Zone 0 and FISCO
Power : Bus powered, per IEC 61158-2;20mA (general purpose or I.S. version)
20mA 18-24Vdc
Update time: 1-2 seconds at 20mA current loop
Programming: Patent Pending PA modem; Simatic PDM, EDDL, FDT/DTM on request. PC interface 2-wire loop powered from PC or laptop. No external power supply required.
Outputs: Profile 3.0.2, Class A with I&M functionality

All Beam Angles are Inclusive, but give an effective beam angle of <3 degrees.