The first electromagnetic flowmeter
The Khrone FLEXMAG 4050 C electromagnetic flowmeter features a disposable flow tube, designed specifically for single-use biopharmaceutical applications like filtration, chromatography, or buffer and media preparation. Produced in a clean room facility, this biocompatible and gamma sterilizable flow tube features a standard single barb fitting, ensuring simple and compliant adaptation to existing single-use systems. The flowmeter additionally delivers a completely stable, direct, and accurate volumetric flow measure that will not drift over time and remains unaffected by fluid properties such as color or density.
Operational design
- Disposable flow tube
- Factory calibrated, no recalibration needed
- No maintenance required
- Full bore design, low pressure loss
- Pulse and current output
Measurement performance
One transmitter fits 2 flow tubes diameters:
- ¼" ID: 0.015...3 l/min
- ⅜" ID: 0.07...14 l/min
- ½" ID: 0.1...20 l/min
- Or: ¾" ID: 0.3...62 l/min
- 1" ID: 0.5...75 l/min
(extended measuring ranges on request)
Accuracy: ± 1% of measured value, +1 mm/s
Biopharma compliance
- Wetted parts of the transmitter are manufactured in an ISO 13485 certified site, with production taking place in an ISO 7 cleanroom environment
- Wetted materials meet USP Class VI / ISO 10993 requirements and are BSE/TSE free compliant
- Single-use flow path tubes are guaranteed gamma sterilizable at a 25 - 40 kGy irradiation, and are tested up to 50 kGy
- Each tube is individually packed in a double-layered PA/PE pouch to maintain sterility
Technical data
Materials |
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| Transmitter housing | Polycarbonate/Acrylonitrile butadiene styrene (PC/ABS) |
| Flow tube | Manufactured in cleanroom at ISO 13485 certified site. Packed in individual double sealed packing material (pouches) |
| Wetted materials flow tube | Thermoplastic: Polysulfone (UDEL 1700) |
| Material of flow tube pouches | Polyamide/Polyethylene (PA/PE) |
| Measuring electrodes | Hastelloy C22 |
| Earthing electrodes | Hastelloy C22 |
| Sterilization of flow tube outside of the original pouch | Gamma sterilizable up to 50 kGy and autoclavable up to 121°C for 30 min |
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Process connections |
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| Single barb | 1/4", 3/8", 1/2", 3/4" or 1" ID. |
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Electrical connections |
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| Mains | |
| Power supply | For pulse output: 24 VDC ± 25% (18...30 VDC) |
| For current output: 24 VDC ± 1% | |
| Power consumption | ≤ 3 W |
| Cable connections | Standard; 1 x M12, 8-pin connector |
| Outputs | |
| General | All operating data are preset at the factory |
| Pulse output | Pulse/frequency output active |
| ¼": 0...10000 Hz; 10000 Hz at Qmax (up to 120%) 3 /8"...1": 0...1000 Hz; 1000 Hz at Qmax (up to 120%) | |
| Pulse width value (at full scale) | Pulse width = symmetrical, 1:1 |
| Active operation | U0 nom = 24 V |
| Current output | Current (active) |
| 4...20 mA; 4 mA at 0 litre per minute; 20 mA at Qmax |
Life sciences, biopharmaceutical industry
- Diafiltration
- Tangential Flow Filtration (TFF)
- Virus Filtration
- Harvesting
- Fill and Finish
- Perfusion
- Nano Filtration
- Chromatography
- Sterile Filtration
- Research
- Process Development