AF-E 400
Electromagnetic flowmeter for utilities and industrial automation
Compact, robust, reliable and cost-effective – these are important characteristics of instrumentation in industrial automation: The AF-E 400 is the culmination of KROHNE expertise in a best-in-class electromagnetic flowmeter specially designed for this industry.
Typical applications
Product Highlights
High temperature capability and accuracy
The AF-E 400 features for example the highest temperature capability. The continuous use at +90°C/+194°F liquid temperature allows its operation in very demanding cooling and hot water applications.
Installation in tight spaces without crosstalk
The AF-E 400 was designed with tight spaces in mind. An electromagnetic flowmeter typically carries the risk of crosstalk. It can influence the measurement of another device installed close to it because of magnetic field overlap.
Extensive self-diagnostics
Thanks to extensive self-diagnostics an reliable operation can be assured. The meter continuously monitors several critical aspects.
Round bore sensor design
Where other producers sometimes choose a rectangular bore, the AF-E 400 flow tube has been designed with a round bore. This makes the flowmeter more resilient against increased pressure. The small reduction in the round bore straightens inconsistencies in the flow profile and removes the need for inlet and outlet runs.
Integrated temperature measurement
Integrated temperature measurement eliminates need for additional intrusion points and provides more data from the process.
Plug-and-play IO-Link
Connecting industrial networks using the IO-Link communication standard is versatile, fast and efficient – from the controller down to the lowest level of automation.
Product Design
Round bore sensor design
The design of the AF-E 400 is specifically adjusted for ultra-compact installation. Three small PCBs (Printed Circuitry Board) are stacked in the device to enable the sleekest housing construction. This allows installation in distribution manifolds or cabinets where tubes are usually very closely spaced. Its 2 mm /0.08’’-thick casted stainless-steel housing also makes the AF-E 400 much more robust than the plastic or sheet metal housings used in similar products on the market.
Thanks to the rotatable, bright full-colour display excellent readability is guaranteed from every angle. Harmonisation of the housing design across connection types allows easy integration no matter what threaded connection or diameter is chosen.
Quick commissioning
The factory settings of the device make plug-and-play installation possible. Thanks to the flow ranges later adjustments are unnecessary.
Technical Data
| Medium | Liquid |
| Conductivity | Down to 20 µS/cm |
| Flow | Bidirectional |
| Measuring range | DN6: 0.005…5 l/min ; DN15: 0.05…35 l/min; DN20: 0.1…75 l/min ; DN25: 0.2…150 l/min DN50 (2″): 0.5…500 l/min |
| Measuring accuracy | ±0.8% MV ±0.2% FS (up to +70°C/+158°F); ±1.5% MV ±0.2% FS (up to +90°C/+194°F) |
| Repeatability | ±0.2% |
| Nominal sizes | DN6: 15; 20; 25 (¼”, ½”, ¾”, 1″) DN40…50: (1½”…2”) solution on request |
| Nominal pressure | 16 bar/232 psi |
| Process temperature | -20…+90°C/-4…+194°F |
| Ambient temperature | Up to +60°C/+140°F |
| Measuring Tube | PEEK (glass fibre reinforced) |
| Electrodes | Carbon PEEK |
| Wetted materials | Stainless Steel 1.4404/316L, PEEK GF, Carbon. Internal gaskets EPDM or FKM. Centellen gasket supplied with G connection type |
| Housing materials | Stainless Steel 1.4404/316L,(housing) ULTEM, PBT, PC-GF30 (face plate, buttons) |
| Protection class | IP 65, 67 |
| Weight | less than 750 gram |
| Connection | G male, NPT female, Rc female |
| Dimensions hxwxl | 73 x 48 x 110mm |
| Power supply | 24 VDC |
| Signal output | 4…20 mA, frequency, pulse switch, IO link OR 2x 4…20 mA or Modbus |
| Inlets and Outlets | 0D/0D |
| Approvals | KTW, ACS, Reg 31, cULus |
Contact us now
KROHNE Messtechnik GmbH
Ludwig-Krohne-Str. 5
47058 Duisburg
Germany
Web: www.krohne.com