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ACCUFLO Calibrated Measuring Sections - smooth and accurate
Mode of Operation
The gas measuring sections are based on the principle of differential pressure and are thus absolutely
insensitive to vibration in the pipework. Thanks to their design and construction they also meet requirements
for low pressure loss, high mechanical stability, high availability and very low maintenance.
The evaluation unit measures and records the flow rate considering density variations caused by
changes in pressure and/or temperature. These devices incorporate various display options, an
analog output interface and three relay outputs. A second analog output is available as an option.
Scope of application
Thanks to their robust design and construction these measuring sections are especially
suitable for systems with high demands for availability and insensitivity against external influences.
Outstanding results have been achieved, for example measuring the pilot gas quantities for gas turbines.
Beyond there high accuracy and the easy handling advantages the ACCUFLO meauring sections are extremely
resistant against accleration and vibrations. In this aspect they are a very robust alternative to Coriolis mass flow meters.
The measuring sections are calibrated by default for a range of 1 : 5. However, for applications requiring high
process dynamics, options are available calibrated for ranges up to 1 : 40.
Tests and acceptance
- Material certificate as per EN 10204 3.1
- Declaration of conformity as per EU guideline 97/23 EG
- Weld seam testing (radiographic testing or dye penetration testing)
- Leakage testing
- Pressure test
- Calibration on accredited test bench
Technical data
| Gas measuring section |
| | Material | Material no. 1.4571 |
| Calibration range | Standard 1 : 5 (option up to 1 : 40) |
| Accuracy | 1% of measured value (calibration with water) |
| Nominal pressure | 150-900 lbs (PN16 – PN100) |
| Length | See table |
| Integrated flow sensor |
| Type | SDF flow probe |
| Sensor material | Mat. no. 1.4571 |
| Differential pressure connection | Flange plate |
| Primary shut-off | |
| Transmitter |
| Differential pressure transmitter | 2-Leiter, Ausgang 4-20 mA, Schutzart IP65 |
| Pressure measurement |
| Pressure transducer | 2-Leiter, Ausgang 4-20 mA, Schutzart IP65 |
| Temperaturmessung |
| RTD thermometer | Pt100 Kl.B, 3-Leiter |
| Calculation unit |
| Type | µFLOW 100 |
| Display | Two-row LCD, height of digits 8 mm |
| Analog output | (0)4 to 20 mA, electrically isolated (max. load 500 ohms) |
| Relay outputs | 1 x fail alarm, 2 x selectable function |
| Power supply | 24 VDC (option 115 or 230 VAC) |
| Protection class | Front operating panel IP64, housing IP30 (without protective housing) |
| Protective housing | Sheet steel, powder-coated RAL 7032, IP66 |
| Perm. ambient temp. | 0 to 40°C |
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| Main dimensions |
| NW |
Length (mm) |
Heigth (mm) |
| 1 1/2" |
550 |
465 |
| 2" |
715 |
479 |
| 3" |
840 |
485 |
| 4" |
1130 |
498 |
| 6" |
1370 |
525 |
| 8" |
1600 |
550 |
| 10" |
1850 |
577 |
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