DatasheetDynisco MDA4X2 Series
The Dynisco MDA4X2 Series includes pressure transducers for precise process and melt pressure measurement in industrial high-temperature applications. The sensors provide an output signal proportional to the applied process pressure via a sealed, liquid-filled pressure transmission system. The pressure applied by the medium is transmitted through the separating diaphragm and the mercury-filled capillary to the measuring diaphragm.
The deformation of the diaphragm changes the resistance values of the bonded strain gauge. With the applied supply voltage, this generates a signal proportional to the process pressure. The MDA4X2 Series combines proven strain gauge technology with a flexible connection between stem and housing as well as a smooth, flush diaphragm. This makes the series especially suitable for applications requiring high media temperature capability and robust mechanical design.
The pressure transducers are designed for media temperatures up to 400 °C and feature a liquid-filled transmission system as well as an integrated electronic calibration device. Depending on the required accuracy, the MDA422 model with 0.5 % accuracy and the MDA462 model with 1.0 % accuracy are available. The wetted parts are made of DyMax™ coated 15-5 PH stainless steel, material no. 1.4545.
| Type | Pressure transducer for process and melt pressure measurements |
|---|---|
| Series | Dynisco MDA4X2 Series |
| Models | MDA422 and MDA462 |
| Measuring function | Process pressure measurement via liquid-filled pressure transmission system |
| Pressure range | 0…17 bar to 0…2000 bar |
| Accuracy MDA422 | ±0.5 % F.S.; up to 50 bar ±1 % F.S. |
| Accuracy MDA462 | ±1 % F.S. |
| Repeatability MDA422 | ±0.1 % F.S.; up to 50 bar ±0.2 % F.S. |
| Repeatability MDA462 | ±0.2 % F.S. |
| Resolution | Infinite |
| Maximum overload | 2 × pressure range; for 1000 and 1400 bar range max. 1750 bar; for 2000 bar range max. 2450 bar |
| Burst pressure | 6 × pressure range, max. 3000 bar |
| Material in contact with media | 15-5 PH SST, material no. 1.4545, DyMax™ coated |
| Measuring system | 4-arm strain gauge |
| Bridge resistance | 350 Ω |
| Output signal | ±3.33 mV/V +10 % |
| Zero tolerance range MDA422 | ±5 % F.S. |
| Zero tolerance range MDA462 | ±10 % F.S. |
| Supply voltage | 10 VDC, max. 12 VDC |
| Internal calibration point | 80 % F.S. ±0.5 % |
| Insulation resistance | 1000 MΩ at 50 VDC |
| Max. diaphragm temperature | 400 °C |
| Diaphragm zero shift due to temperature change | MDA422 < 0.2 bar / 10 °C; MDA462 < 0.4 bar / 10 °C |
| Max. housing temperature | 120 °C |
| Housing zero shift due to temperature change | MDA422 ±0.2 % F.S. / 10 °C; MDA462 ±1.0 % F.S. / 10 °C |
| Sensitivity shift due to temperature change | MDA422 ±0.1 % F.S. / 10 °C; up to 50 bar ±0.2 % F.S. / 10 °C; MDA462 ±0.4 % F.S. / 10 °C |
| Pressure connection | 1/2-20 UNF-2A or M18 × 1.5 |
| Stem length / flexible connection | Option 15/46: stem length 152 mm and flexible connection 457 mm between sensor stem and housing |
| Pressure range codes | 17: 0…17 bar | 35: 0…35 bar | 50: 0…50 bar | 1C: 0…100 bar | 2C: 0…200 bar | 3.5C: 0…350 bar | 5C: 0…500 bar | 7C: 0…700 bar | 1M: 0…1000 bar | 1.4M: 0…1400 bar | 2M: 0…2000 bar |
| Accessories | Indicator 1290, Process Readout UPR700, Process Controller ATC770, Cleaning Tool Kit, Tool Kit |
