1. Product description
Differential pressure transmitter with metal sensors Overload-resistant and function-monitored; Communication via HART
Your benefits
The electronic differential pressure measurement system eliminates issues of traditional differential pressure measurements using impulse lines or capillaries:
1. Eliminate measurement drift due to ambient temperature changes
2. Eliminate line condensation or evaporation events (dry/wet leg inconsistencies) and plugging events
3. No high cost of heating impulse lines to prevent freezing (installation, energy)
4. Eliminate tubing and connection leaks often seen with traditional systems
5. Multivariable level measurement: HART-based differential pressure, head pressure and sensor temperatures from one system
6. Continuous health indication of the entire system via HART-based diagnostic
7. Intuitive menu-driven installation
8. Color-coded wiring
9. High reproducibility and long-term stability
10. High reference accuracy of individual sensors:
up to ±0.075 %,
as PLATINUM version: ±0.05 %
11. Increased process availability and reliability
12. Safety risks are minimized with the new electronic differential pressure system architecture and design
13. Lowest total cost of owner ship due to reduced installation time, maintenance downtime and spare requirements.
2. Application field
The Deltabar FMD72 is used to measure the level, volume or mass of liquids in pressurized tanks. The system compromises two sensor modules and one transmitter. One sensor module measures the hydrostatic pressure (high pressure) and the other one the head pressure (low pressure). The level (electronic differential pressure) is calculated in the transmitter using these two digital values.
3. Technical information
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 absolute / 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, ANSI,JIS) | |
Process connection hygienic |
DIN11851 DIN11864-1 Tri-Clamp DRD Varivent |
|
Output | 4...20 mA HART | |
Certificates / Approvals |
ATEX, FM, CSA, IECEx NACE MRO175, EN10204-3.1, EHEDG 3A |
|
Options |
4-line digital display SS- or Aluminium housing |
|
Application limits | Use the Software Applicator Sizing Electronic DP |
Measuring principle | Differential pressure | |
Characteristic | Electronic differential pressure transmitter with metal sensor for level, volume or mass measurement in liquids. | |
Supply / Communication |
4...20 mA HART: 12...45V DC Exia: 12...30V DC |
|
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 range |
400 mbar...10 bar (6 psi...150psi) |
|
Max. overpressure limit | 160 bar (2400 psi) | |
Process connection |
Threads Flange (DIN, ANSI,JIS) |
|
Hygienic |
DIN11851 DIN11864-1 Tri-Clamp DRD Varivent |
|
Output | 4...20 mA HART | |
Certificates / Approvals |
ATEX, FM, CSA, IECEx NACE MRO175, EN10204-3.1, EHEDG 3A |
|
Options | 4-line digital display SS- or Aluminium housing | |
Application limits | Use Software Applicator Sizing Electronic DP |