Thermo Scientific AquaSensors Universal Controller
| Brand | Thermo Fisher |
|---|---|
| Origin | USA |
| Manufacturer | Thermo Fisher Scientific |
| Product Type | Imported |
| Model | Thermo Scientific AquaSensors |
| Pricing | Upon Request |
Overview
The Thermo Scientific AquaSensors Universal Controller is a field-deployable, multi-protocol industrial-grade control unit engineered for continuous, real-time water quality monitoring in municipal, industrial, and environmental applications. Designed as the central interface for the AquaSensors platform, it supports both analog-output sensors and digital DataStick™ sensors—enabling flexible integration across legacy and next-generation measurement architectures. The controller operates on the principle of standardized signal conditioning and protocol translation: analog inputs (4–20 mA or 0–5/10 V) are digitized with 16-bit resolution and temperature-compensated processing, while DataStick™ sensors communicate via RS-485 using a deterministic, low-overhead binary protocol optimized for sensor self-identification and metadata exchange. Its architecture complies with IEC 61000-6-2 (EMC immunity) and IP66-rated enclosures ensure operational reliability in outdoor or wet-location installations.
Key Features
- Two hardware variants: AV38 (optimized for multi-sensor DataStick™ networks) and AV88 (optimized for analog sensor interfacing and hybrid analog/digital configurations)
- Modbus RTU master capability supporting up to 255 DataStick™ sensors on a single daisy-chained RS-485 bus, with automatic node enumeration and polling interval configuration
- True plug-and-play operation for DataStick™ sensors: no manual address assignment or firmware initialization required—sensor identity, calibration coefficients, and measurement range are auto-negotiated at connection
- Dual-display capability showing primary parameter (e.g., pH, DO, conductivity, turbidity) and simultaneous temperature reading with user-selectable units (°C or °F)
- Configurable digital communication options including Modbus RTU, Modbus TCP/IP (via optional Ethernet module), and ASCII serial output for SCADA or DCS integration
- Remote configuration, zero/span calibration, and diagnostic access via web interface (AV38/AV88 with Ethernet option) or terminal-based CLI over RS-232/RS-485
- Eight-position screw-terminal block (7 dedicated I/O + 1 common) with color-coded labeling and spring-clamp design for vibration-resistant wiring
- Mounting flexibility: compatible with DIN-rail (35 mm), panel-mount (with optional bracket kit), or wall-mount (with stainless-steel bracket kit)
Sample Compatibility & Compliance
The AquaSensors Universal Controller interfaces exclusively with Thermo Scientific AquaSensors series sensors—including pH, ORP, dissolved oxygen (optical and electrochemical), conductivity, salinity, total dissolved solids (TDS), turbidity (nephelometric), and ammonium ion-selective electrodes. It does not support third-party sensors without Thermo-certified DataStick™ firmware and electrical interface compliance. All configurations meet UL 61010-1 (safety), CE marking requirements (EMC Directive 2014/30/EU, Low Voltage Directive 2014/35/EU), and are designed for deployment in Class I, Division 2 hazardous locations when installed with appropriate conduit seals and barriers. Firmware supports audit-trail logging per FDA 21 CFR Part 11 requirements when paired with Thermo’s AquaView™ software and secure authentication.
Software & Data Management
Configuration, calibration, and data visualization are managed through Thermo’s AquaView™ PC software (Windows 10/11), which provides role-based user access control, versioned calibration certificate generation, and automated report export (PDF/CSV). The controller logs timestamped measurements internally (up to 32,000 records) with configurable sampling intervals (1 sec to 24 hr). When connected to an enterprise network, data can be streamed via Modbus TCP/IP to historian systems (e.g., Ignition, Siemens Desigo CC, or OSIsoft PI) with native tag mapping. All firmware updates are cryptographically signed and validated prior to installation to ensure integrity and traceability in regulated environments.
Applications
- Drinking water treatment: continuous monitoring of pH, chlorine residual, and turbidity at intake, filtration, and distribution points
- Wastewater influent/effluent monitoring per EPA Method 1600-series and ISO 5814 (DO), ISO 7888 (conductivity), and ISO 7027 (turbidity)
- Cooling tower and boiler feedwater control in power generation and HVAC systems
- Environmental compliance reporting for NPDES permits and state-level TMDL programs
- Industrial process water loops requiring GLP/GMP-aligned data integrity (e.g., pharmaceutical purified water systems per USP )
FAQ
Can the AV38 controller connect to analog sensors?
No—the AV38 is designed exclusively for DataStick™ digital sensors. Analog sensor support is limited to the AV88 model.
Is firmware update possible over Modbus RTU?
No—firmware updates require local USB or Ethernet connection using AquaView™ software and signed update packages.
Does the controller support HART protocol?
No—HART is not supported; only 4–20 mA analog (AV88), Modbus RTU/TCP, and proprietary DataStick™ protocols are implemented.
What is the maximum cable length for a DataStick™ sensor on RS-485?
Up to 1,200 meters at 9.6 kbps; length decreases with higher baud rates—consult Thermo’s DataStick™ Installation Guide for impedance-matched termination requirements.
Is NIST-traceable calibration documentation included?
Calibration certificates are generated in AquaView™ and may be printed with NIST-traceable reference standard identifiers when performed using Thermo-certified calibration solutions and procedures.
