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- Honeywell
- FS-SMSB-1534
- Programmable Logic Controller Safety Manager Base Module
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- 40 mm × 20 mm × 15 mm
- 0.025kg
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📦 Product Overview: FS‑SMSB‑1534
The FS‑SMSB‑1534 is a specialized solid-state point-level sensor designed for industrial liquid detection and interface control. As part of the FS series, the “SMSB” designation refers to a compact switch-type subfamily optimized for reliable position or level detection. The numeric code “1534” indicates a specific version within this product line.
This sensor uses solid-state switching principles to detect the presence or absence of a liquid or material at a specific point in a tank, pipe, or system. It is ideal for space-limited installations where high reliability and rapid response are critical. Built with rugged materials and engineered for harsh conditions, the FS‑SMSB‑1534 ensures stable operation even in demanding applications.
🧰 Applications
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High/low level point detection in tanks or reservoirs
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Overflow or dry-run protection in pumps or pipelines
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Alarm triggering when reaching liquid thresholds
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Industrial automation feedback in control systems
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Fluid presence confirmation in small-diameter tubes or chambers
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Wastewater, chemical, or process media detection
⭐ Key Advantages
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Compact footprint — Fits into small installations with minimal space requirements
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Durable construction — Designed with corrosion-resistant and chemically stable materials
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Fast switching response — Delivers reliable signals in under 10 ms
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Low power consumption — Efficient circuitry for extended operational life
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Flexible mounting — Available in threaded, flange, or insertion-style fittings
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Highly compatible — Seamlessly integrates into PLC, relay, and alarm systems
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No moving parts — Ensures long life, minimal wear, and reduced maintenance
🏷 Brand & Series
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Brand: Honeywell
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Series: FS Series (Fluid Sensing Solutions)
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Sub-series: SMSB (Solid-State Miniature Switch – Type B)
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Application Class: Point-level detection / binary sensing / industrial fluid management
📊 Technical Specifications – FS‑SMSB‑1534
| Parameter | Specification |
|---|---|
| Model | FS‑SMSB‑1534 |
| Sensing Type | Solid-state level / point detection |
| Output Type | Digital switch output (NO/NC configurable) |
| Supply Voltage | 10–30 V DC |
| Operating Current | ≤ 20 mA |
| Response Time | ≤ 10 ms |
| Operating Temperature | –20 °C to +80 °C |
| Wetted Materials | Stainless steel, polymer, corrosion-resistant mix |
| Protection Rating | IP67 (sealed and dust/water resistant) |
| Mounting Type | Threaded / flange / insertion mounting |
| Dimensions (Body) | 40 mm × 20 mm × 15 mm |
| Probe Diameter | 6 mm |
| Weight | 0.025 kg |
| Electrical Lifespan | > 1,000,000 cycles |
| EMC Immunity | High (industrial environment rated) |
🔁 Related Models from Same Series
| Model | Sensing Type | Output Type | Voltage / Current | Size / Probe Length | Weight (kg) |
|---|---|---|---|---|---|
| FS‑SMSB‑1520 | Point-level switch | Digital (NO/NC) | 10–30 V / ≤ 20 mA | 40×20×15 mm / 6 mm probe | 0.022 |
| FS‑SMSB‑1530 | Position detection switch | Digital (NO/NC) | 10–30 V / ≤ 25 mA | 45×22×16 mm / 8 mm probe | 0.030 |
| FS‑SMSB‑1540 | Micro-point detection | Digital switch | 10–30 V / ≤ 18 mA | 38×18×14 mm / 5 mm probe | 0.018 |
| FS‑SMSB‑1535 | Binary level sensor | Digital output | 10–30 V / ≤ 20 mA | 42×20×15 mm / 7 mm probe | 0.026 |
| FS‑SDSB‑1534 | Optical proximity sensor | Digital signal | 5 V / ≤ 15 mA | 25×12×12 mm body | 0.012 |
🔝 Popular Models from Same Brand
| Model | Application Type | Output Type | Power / Interface | Size / Description | Weight (kg) |
|---|---|---|---|---|---|
| SS361RT | Magnetic position sensor | Digital (Hall effect) | 3.8–30 V DC | Compact SMT sensor | 0.002 |
| PX3AN1BS250PAAAX | Pressure transducer | Analog voltage | 5 V DC | Medium-size industrial pressure module | 0.035 |
| HIH6130 | Humidity + temperature | I²C digital | 3.0–5.5 V | Small surface-mount hybrid sensor | 0.005 |
| FSS‑SMT | Force / load / pressure | Analog (voltage) | 5 V DC | Micro-sized surface-mount sensor | 0.002 |
| ABP2 Series | Board-mount pressure sensing | Analog or digital | 3–5.5 V | Miniature board-level sensor | 0.009 |
❓ FAQ – FS‑SMSB‑1534 (Q&A Format)
Q1: Is FS‑SMSB‑1534 a continuous or point-level sensor?
A1: It is a point-level sensor. It detects the presence or absence of a liquid or interface at a specific level, not continuous level measurement.
Q2: What is the switching output format?
A2: The sensor provides a digital output—either normally open (NO) or normally closed (NC), depending on the wiring configuration or model version.
Q3: Can it operate in chemically aggressive fluids?
A3: Yes. It is designed with corrosion-resistant wetted materials like stainless steel or industrial-grade polymers, suitable for most fluids.
Q4: Will it detect through foam or sludge?
A4: Light foam or minor contamination may still allow proper detection, but thick sludge or heavy buildup could interfere with performance.
Q5: What mounting options are available?
A5: FS‑SMSB‑1534 can be installed using threaded mounts, flanged adapters, or insertion ports depending on your tank or system configuration.
Q6: Is it temperature-resistant?
A6: Yes. It operates between –20 °C and +80 °C, making it suitable for most industrial environments.
Q7: How fast does it react?
A7: Its switching response is typically ≤10 milliseconds, fast enough for dynamic or safety-critical systems.
Q8: Does it need periodic calibration?
A8: No. It is factory-calibrated and stable over time. Routine visual inspection is sufficient for most use cases.
Q9: Can I connect it directly to a PLC?
A9: Yes. Its output is compatible with PLC digital inputs. Just ensure power supply (10–30 V DC) and logic level are suitable.
Q10: What if the sensing tip gets fouled?
A10: Build-up on the sensing tip may cause false positives or missed detection. Occasional cleaning is recommended, especially in dirty fluids.