Product Description
- The SMC LFE flow meter with a three-colour display is suitable for monitoring the flow of water and water-soluble coolants in industrial applications.
- It can be used to regulate the flow of pressurised cooling water for welding tongs.
- Other applications include the monitoring of water-soluble coolants and cooling water for metal moulds.
- The LFE electromagnetic digital flow meter from SMC measures flow using the principle of electromagnetic induction.
- The compact design with an oval flow channel ensures low weight and a narrow overall width.
- The three-colour dual display clearly shows the current flow rate as well as other configurable values.
- Interference suppression can reduce fluctuations in the displayed value.
- In the isolated version, the pipe connection is electrically isolated from the power supply.
- Suitable medium – water or conductive media that do not corrode the materials with which the liquid comes into contact
- Conductivity of the medium – min. 5 μS/cm
- Measurement method – Capacitive-electrostatic
- Nominal flow range – 0.5 to 200 l/min
- Flow display range – 0.4 to 240 l/min
- Flow rate range – 0.4 to 240 l/min
- Zero-point flow rate – 0.4 to 4 l/min
- Smallest adjustment increment – 0.1 to 1 l/min
- Total volume per pulse (pulse width = 50 ms) – 0.1 to 1 l/pulse
- Temperature of the process medium – 0 to 85 °C (no freezing, no condensation)
- Display units – Instantaneous flow rate l/min, cumulative flow L
- Repeatability – Displayed values: ±2 % F.S. Analogue output: ±1.5 % F.S.
- Ambient and medium temperature – ±5 % F.S. (25 °C reference value)
- Operating pressure range – 0 to 10 bar
- Test pressure – 20 bar
- Switch output – PNP open-collector
- Max. load current – 80 mA
- Maximum applied voltage – 28 VDC
- Internal voltage drop – 1.5 V or less (at a load current of 80 mA)
- Response time (switching output) – Can be set to 0.25 s, 0.5 s, 1 s, 2 s or 5 s
- Output protection – Short-circuit protection
- Output mode – choice between hysteresis mode, window comparator mode, cumulative output or cumulative pulse output
- Response time (analogue output) – linked to the switching output
- Voltage output – Output voltage: 1 to 5 V Output resistance: 1 kΩ
- Current output – Output current: 4 to 20 mA Max. load impedance: 600 Ω
- Hysteresis – Variable
- Display type – dual display (main display: 4 digits with 7 segments, two-colour red/green; sub-display: 6 digits with 11 segments, white). Display values are updated 5 times per second
- Status LED – Output 1, Output 2: orange
- Supply voltage – 24 VDC ±10 %
- Current consumption – 45 mA or less
- Protection rating – IP65
- Operating temperature range – 0 to 50 °C (no freezing, no condensation)
- Humidity range – 35 to 85 per cent relative humidity (no condensation)
- Standards and regulations – CE marking (EMC Directive, RoHS Directive)
- Materials in contact with the medium – PPS, FKM, brass
- Connection size – 3/8" to 1"
- Width – 90 to 120 mm
- Depth – 40 or 55 mm
- Height – 89 to 106 mm
- Housing weight – 340 to 680 g
