Technical Data
CompareContinuous / Liquids
| Measuring Principle | Differential pressure |
| Characteristic / Application | Electronic differential pressure transmitter with metal sensor for level, volume or mass measurement in liquids. |
| Supply / Communication | 4...20 mA HART |
| Accuracy | 0.075% of individual sensor, "PLATINUM" 0.05% of individual sensor |
| Long term stability | 0.05% of URL/year of individual sensor |
| Ambient temperature | –40...+80°C (–40... +176°F) |
| Process temperature | –40...+125°C (–40 ... +257°F) |
| Process pressure / max. overpressure limit | 160 bar (2400 psi) |
| Pressure measuring range | 400 mbar...10 bar (6 psi...150 psi) |
| Main wetted parts | 316L, Alloy C |
| Process connection | Threads Flange (DIN, ASME,JIS) |
| Process connection hygienic | DIN11851 DIN11864-1 Tri-Clamp DRD Varivent |
| Communication | 4...20 mA HART |
| Certificates / Approvals | ATEX, FM, CSA, CSA C/US IEC Ex, NEPSI, INMETRO |
| Design approvals | NACE MR0175 EN10204-3.1 |
| Hygienic approvals | FDA |
| Options | 4-line digital display SS- or Aluminium housing |
| Application limits | Use the Software Applicator Sizing Electronic DP |
Pressure
| Measuring Principle | Differential pressure |
| Characteristic | Electronic differential pressure transmitter with metal sensor for level, volume or mass measurement in liquids. |
| Supply voltage | 4...20 mA HART: 12...45V DC (Non Ex) Ex ia: 12...30V DC |
| Reference Accuracy | 0.075% of individual sensor, "PLATINUM" 0.05% of individual sensor |
| Long term stability | 0.05% of URL/year of individual sensor |
| Process temperature | –40...+125°C (–40...+257°F) |
| Ambient temperature | –40...+80°C (–40...+176°F) |
| Measuring cell | 400 mbar...10 bar (6 psi...150psi) |
| Vacuum resistance | 10 mbar (0.15 psi) |
| Max. overpressure limit | 160 bar (2400 psi) |
| Process connection | Threads Flange (DIN, ASME,JIS) |
| Process connection hygienic | DIN11851 DIN11864-1 Tri-Clamp DRD Varivent |
| Material process membrane | 316L, AlloyC, |
| Fill fluid | Silicone oil Synthetic oil |
| Material housing | Die-cast aluminum Stainless steel |
| Communication | 4...20 mA HART |
| Certificates / Approvals | ATEX, FM, CSA, IECEx, NEPSI, INMETRO, UK Ex |
| Design approvals | NACE MR0175, EN10204-3.1, |
| Hygienic approvals | EHEDG 3A |
The Deltabar FMD72 electronic differential pressure measurement system measures the pressure, level, volume or mass of liquids in pressurized vessels or distillation towers/evaporators. The high-pressure sensor (HP) measures the hydrostatic pressure of the liquid, the low-pressure sensor (LP) measures the top pressure, and the transmitter calculates the level from the sensor inputs. The electronic remote differential pressure level measurement system eliminates the problems encountered with conventional differential pressure measurement.
Benefits:
Eliminates measured-value drift caused by ambient temperature changes
· Eliminates condensation or evaporation and blockages in the impulse lines
· Eliminates the high cost of winter heating and frost protection of impulse lines (installation, insulation)
· Eliminates the leak-prone pipes and fittings of conventional systems
· Multivariable level measurement: the same system provides differential pressure, top pressure and temperature measurement via HART communication
· Diagnostics via HART communication indicate the overall system operating status
· Intuitive, menu-guided commissioning
Application areas:
For differential pressure, level, volume and mass measurement in pressurized tanks and distillation columns/evaporators
· Process connections: thread, flange and hygienic connections
· Process temperature: -40...+125 °C (-40...+257 °F), optionally 250 °C (480 °F)
· Measuring range: 400 mbar ... +40 bar (6 ... 600 psi)
· Accuracy: sensor up to ±0.05 %, system up to ±0.07 %
· International explosion protection and hygienic approvals
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Source: public information from the Endress+Hauser website
Case Studies
Municipal Wastewater Treatment — Wastewater Treatment Plant · Differential Pressure Measurement Application Case
Project Background
Municipal Wastewater Treatment customers at the Wastewater Treatment Plant stage have long faced the challenge of insufficient accuracy in effluent quality monitoring and instruments prone to contamination causing data drift, affecting compliance discharge, placing higher demands on the stability and measurement accuracy of Differential Pressure Measurement.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Differential Pressure Measurement for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Municipal Wastewater Treatment conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Food & Beverage — Food Production Line · Differential Pressure Measurement Application Case
Project Background
Food & Beverage customers at the Food Production Line stage have long faced the challenge of high hygienic measurement requirements, with inline instruments needing to withstand CIP/SIP cleaning while maintaining stable accuracy, placing higher demands on the stability and measurement accuracy of Differential Pressure Measurement.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Differential Pressure Measurement for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Food & Beverage conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Chemical & Pharmaceutical — Reactors and Storage Tanks · Differential Pressure Measurement Application Case
Project Background
Chemical & Pharmaceutical customers at the Reactors and Storage Tanks stage have long faced the challenge of highly corrosive media and complex conditions, requiring corrosion-resistant and explosion-proof instruments, placing higher demands on the stability and measurement accuracy of Differential Pressure Measurement.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Differential Pressure Measurement for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Chemical & Pharmaceutical conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Power & Energy — Power Plant Boiler and Turbine · Differential Pressure Measurement Application Case
Project Background
Power & Energy customers at the Power Plant Boiler and Turbine stage have long faced the challenge of unstable measurement under high temperature and pressure, with high maintenance and downtime costs, placing higher demands on the stability and measurement accuracy of Differential Pressure Measurement.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Differential Pressure Measurement for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Power & Energy conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
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