Water Level Sensor for 200L Water Tank – Deepflow CYPF07743

Overview

The Deepflow CYPF07743 water level sensor is an industrial-grade, non-contact ultrasonic sensing module engineered for reliable and stable liquid level monitoring in laboratory-scale ultra-pure water storage systems—specifically calibrated for 200 L capacity tanks. Designed to integrate seamlessly into ultra-pure water systems (UPW), this sensor operates on the principle of time-of-flight ultrasonic measurement: it emits high-frequency acoustic pulses (typically 40–50 kHz) toward the water surface and calculates distance based on the echo return time. The resulting analog output (4–20 mA or 0–5 V DC, configurable per system interface requirements) provides continuous, real-time level feedback with ±1% full-scale accuracy under standard lab conditions (20–25 °C, still liquid surface, no foam or vapor interference). Its compact form factor (Φ22 mm × 85 mm) and IP67-rated housing ensure compatibility with stainless-steel or polypropylene UPW tank manways and support long-term operation in cleanroom-adjacent environments.

Key Features

• Non-invasive ultrasonic measurement eliminates risk of contamination—critical for ISO Class 5–7 cleanroom-compatible ultra-pure water systems.
• Stainless-steel transducer face and PTFE-sealed electronics housing resist corrosion from deionized (DI) and Type I ultrapure water (resistivity ≥18.2 MΩ·cm).
• Configurable output signal: factory-set 4–20 mA loop-powered or user-selectable 0–5 V DC for direct integration with PLCs, SCADA interfaces, or UPW system controllers.
• Temperature-compensated algorithm mitigates drift across ambient operating range of 0–45 °C; built-in diagnostics flag signal loss or air-gap anomalies.
• Pre-calibrated for 200 L vertical cylindrical tanks (standard height: 650 mm, Ø350 mm); optional field recalibration via handheld configurator (sold separately).
• No moving parts or wetted components—meets GLP maintenance intervals (recommended verification every 6 months per internal SOP).

Sample Compatibility & Compliance

The CYPF07743 is validated for use with ultrapure water (ASTM D1193 Type I), deionized water, and low-conductivity process water (≤0.1 µS/cm). It is not rated for aggressive solvents, viscous fluids (>10 cP), or aerated/foaming media. While not certified to IEC 61508 SIL or ATEX, its design aligns with general safety principles outlined in IEC 61000-6-2 (EMC immunity) and IEC 61000-6-4 (EMC emissions). For regulated laboratories, the sensor supports audit-ready documentation packages—including calibration certificate traceable to NIM (National Institute of Metrology, China) and material compliance statements (RoHS 2011/65/EU, REACH SVHC-free declaration).

Software & Data Management

The sensor itself is analog-output only and does not include embedded firmware or onboard data logging. However, when connected to a compatible UPW system controller (e.g., ELGA Purelab Chorus, Sartorius arium® advance), it feeds level data into centralized dashboards supporting trend analysis, alarm thresholds (e.g., “low-level warning at 15% volume”), and automated refill sequencing. Integration with LIMS or MES platforms is achievable via Modbus RTU gateway adapters (not included). All configuration parameters—including damping time, zero/span offset, and fail-safe output mode—are accessible via HART-enabled handheld communicators compliant with HART 7 protocol.

Applications

• Real-time reservoir monitoring in benchtop and central ultra-pure water generation systems (e.g., feed tanks for point-of-use polishing units).
• Interlock signaling for pump shutdown or booster activation upon reaching preset high/low level limits.
• Supporting ISO 14644-1 cleanroom utility monitoring requirements when deployed in conjunction with validated UPW distribution loops.
• QC/QA documentation of water inventory stability during 24/7 operation—enabling correlation with TOC, conductivity, and particle count logs.
• Replacement or retrofit solution for legacy float-switch-based level controls where mechanical wear or false triggering has compromised reliability.

FAQ

Is the CYPF07743 suitable for pressurized water tanks?
No—it is designed exclusively for atmospheric or vented tanks. Pressure-rated variants require custom engineering and are not part of the standard CYPF07743 product line.
Does it require periodic recalibration in a certified lab?
Field verification using a known reference depth (e.g., graduated dipstick) is recommended every 6 months; full NIM-traceable recalibration is optional and available through authorized Deepflow service centers.
Can it be installed on polypropylene tanks without signal attenuation?
Yes—the 40–50 kHz ultrasonic beam transmits effectively through thin-walled PP (≤5 mm) provided the mounting surface is flat, clean, and acoustically coupled with silicone gel (included in installation kit).
What is the minimum detectable level change?
Resolution is ≤1 mm under optimal conditions (still liquid, ambient temperature stability, no condensation on transducer face).
Is FDA 21 CFR Part 11 compliance supported?
The sensor itself does not store or process data; compliance is achieved at the system level (e.g., controller/LIMS) where electronic signatures, audit trails, and role-based access are implemented.