Profibus PA Density Transmitter

The DT303 Profibus PA Density Transmitter is an instrument developed for the continuous, online measurement of liquid concentration and density, directly in the industrial process. Its pioneer technology consists of a capacitive type differential pressure transmitter coupled to a pair of pressure repeaters immersed in the process.

A temperature sensor located between the two pressure repeaters is used to compensate the temperature variations in the process fluid. A dedicated software, by means of an algorithm, calculates the fluid density. Depending on the industrial process, density may be expressed in Brix degree, Gay-Lussac degree, Baumé degree, Plato degree, concentration, etc.

The DT303 is designed for Profibus PA Digital Communication Protocol.

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Range 1: 0.5 to 1.8 g/cm³
Range 2: 1.0 to 2.5 g/cm³
Range 3: 2.0 to 5.0 g/cm³"


Profibus PA, digital only, 31,25 kbit/s voltage mode with bus power

Power Supply

Bus Power 9-32 VDC


Range 1: ±0.0004 g/cm³ (±0.1 °Bx)
Range 2: ±0.0007 g/cm³
Range 3: ±0.0016 g/cm³


The configuration is made by remote configuration Simatic PDM and similar configuration devices


4 ½-digit numerical and 5-character alphanumerical LCD indicator

Temperature Limits

Ambient: -40 to 85 °C (-40 to 185 ºF)
Process: -20 to +150ºC (-4 to 302ºF)

Static Pressure Limit

70 kgf/cm² (7MPa) (1015 PSI)

Ambient Humidity Limits

0 a 100% RH

Process Connection

Industrial model: 316 SST flange ANSI B16.5
Sanitary model: 304 SST Tri-clamp

Wetted Parts

316 SS or Hastelloy

Hazardous Area Certification

Explosion proof, weather proof and intrinsically safe


Side for Tanks and Top for Pipelines


Sanitary model: 4.5 kg (10 lb)
Industrial model: 8 kg (18 lb)



Country of Origin