Description
The ifm SBG Series are electronic flow monitors / flow meters with integrated digital display, designed for monitoring cooling water, lubricants, hydraulic oil, and air/gas flows in machine tools and industrial systems. The SBG246 features a high-contrast LCD display showing actual flow rate, temperature (on dual-sensor models), and switch status, with fast response time (< 500 ms) suitable for real-time monitoring. Related models:
- SBG232 / SBG233 / SBG234 → Paddle-wheel or vortex type flow monitors for liquids (coolant/oil) with adjustable setpoint, NPN/PNP or relay output.
- SBG332 → Similar form factor, often for higher viscosity oils or with different output config (analog + switch).
- SBG257 → Flow monitor variant with extended temperature range or special media compatibility.
- SBG246 → Enhanced version with large dual-line display (flow + temperature on some variants), IO-Link ready (select versions), fast response, and 2 × switching outputs or 1 × analog + 1 × switch.
These units detect flow via a paddle-wheel sensor (for low-viscosity liquids) or thermal principle (for air/gas models — check suffix), and provide both visual indication and electrical switch/analog signals for PLC control or alarm annunciation.
Key Features
- Display: High-contrast LCD — shows flow rate (L/min or m³/h) and temperature (on SBG246 with T-sensor).
- Outputs: 2 × PNP/NPN switching outputs (or 1 × 4–20 mA + 1 × PNP — model dependent) + IO-Link on smart variants.
- Response Time: ≤ 500 ms (fast enough for real-time machine protection).
- Setpoint Adjustment: Via 3 front keys — no PC required (though IO-Link versions can be configured via moneo).
- Medium Types: Coolant, cutting oil, hydraulic oil (viscosity range specified per model — paddle-wheel typically ≤ 50 cSt; thermal for air/gas).
- Country of Origin: Germany
Model Reference Table
Model | Sensing Principle | Medium | Display | Outputs | Typical Use |
|---|---|---|---|---|---|
SBG246 | Paddle-wheel / Thermal* | Water, oil, air (check suffix) | Dual-line LCD (Flow + Temp*) | 2× PNP (or 1× Ana + 1× Sw) + IO-Link (sel.) | Coolant flow + temp with local readout |
SBG232 | Paddle-wheel | Water / coolant / oil (≤ 30 cSt) | LED bar + digital | 2× PNP/NPN switch | Simple flow NO/NC monitoring |
SBG233 / SBG234 | Paddle-wheel | Water / oil (vary flow ranges) | LED + digital | 2× switch outputs | Flow alarm on machines |
SBG332 | Paddle-wheel / Thermal | Oil (higher visc.) / Air (thermal) | Digital LED | 1× 4–20 mA + 1× PNP | Analog flow to PLC + alarm |
SBG257 | Thermal (air/gas) or Paddle | Compressed air / gas (thermal) or special liquid | Digital | Switch + Analog (var.) | Air consumption / leak detection |
⚠️ Important:
Technical Specifications (Representative — SBG246 Paddle-Wheel Flow Monitor with Display)
Parameter | Specification |
|---|---|
Model | SBG246 (ifm Electronic — complete suffix defines flow range & media) |
Measuring Principle | Paddle-wheel (for liquids) OR Thermal (for air/gas — verify suffix) |
Measured Medium | Water, water-glycol coolant, low-visc. oil (paddle-wheel); Compressed air / N₂ (thermal) |
Flow Range (Example for Coolant Variant) | 0.2 … 50 L/min (other ranges available per suffix) |
Display | Dual-line LCD — upper: flow rate (L/min or m³/h); lower: temperature*/ setpoint / diagnostics |
Switching Outputs | 2 × PNP (max 100 mA each) — hysteresis & window mode programmable |
Analog Output (Select Versions) | 4–20 mA (scalable to flow range) — on combi-models (1 Ana + 1 Sw) |
IO-Link | Available on -I variant (SBG246I…) — for remote param. & diag. |
Response Time | ≤ 500 ms (typical; programmable damping 0.1–10 s) |
Temperature Measurement | Integrated Pt1000 (on T-suffix models) — range -25…+90 °C |
Process Connection | G½ or G1 thread (male) — flush paddle inserted into tee or inline housing |
Wetted Materials | Stainless steel 1.4404 (316L), POM (paddle housing), FKM / EPDM seals |
Max. Pressure / Temp. | 16 bar (PN16) / Media: -25…+90 °C (paddle-wheel liquid vers.) |
Electrical Connection | M12 × 8-pin (A-coded) |
Protection | IP65/IP67 (with mated connector), front IP67 with gasket |
Power Supply | 18–30 V DC |
Dimensions (Sensor Body) | Approx. 80 × 82 × 42 mm (inline tee not included — often sold separately as SU…) |
Weight | ~ 350 g (sensor only) |
Standards | CE, UL (component), RoHS |
Warranty & After-Sales
- Factory new units: 12 months warranty
- Refurbished units: 3-6 months warranty
- Technical support for:
- Flow range & viscosity compatibility check (paddle vs thermal)
- Setpoint programming via front keys (menu tree walk-through)
- Output wiring (PNP: brown=+24V, blue=0V, black/white=OUT1/OUT2 switched to +24V)
- IO-Link parameterization (if -I variant) — scaling, damping, alarm limits
- Cross-reference vs. ifm SM series (magmeter for conductive liq.), Bürkert 8032 (paddle-wheel)
Delivery Time
- Standard delivery: 3-5 working days (stock items)
- Express shipping available upon request
Why Choose Our Store
- Genuine ifm Electronic flow monitors with display
- Global supply network with competitive pricing
- Expertise in machine-tool coolant/oil flow monitoring & ifm moneo/IO-Link setup
- Comprehensive technical documentation (menu structure, dimensional drawings, viscosity limits chart)
- Responsive customer service and support
Applications
- Machine Tool Coolant / Cutting Oil Flow Monitoring: Detect low/no-flow before spindle damage.
- Hydraulic Power Unit Lubrication Flow: Verify lube oil circulation to bearings.
- Compressed Air / Gas Leak Detection: Thermal version (SBG257) monitors air consumption.
- Injection Molding / Die Casting: Mold cooling water flow + temperature (with SBG246-T).
- Packaging / Converting: Verify wash-down or glue application flow.
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