The Squirrel range is a standalone, portable, multi-channel data logging. Renowned for their universal analogue inputs and robust build quality, these instruments capture a vast array of physical parameter, such as temperature, voltage, current, resistance, and pressure, without requiring a constant PC link. The line-up spans from accessible field units to highly precise, network-ready systems:

1. The Next-Generation SQ Series

• Squirrel SQ16: The ideal entry-level portable logger. Configured with 16 single-ended or 8 differential universal inputs, it features 32-bit resolution for precise data capture and a long battery life (up to 6 months standalone). It holds up to 200 million readings and allows seamless field management via a dedicated mobile app.
• Squirrel SQ16 Plus: Built for high-performance and demanding configurations. While maintaining the same flexible channel layout, the Plus model adds native support for ultra-accurate 3-wire and 4-wire Pt100/Pt1000 resistance temperature detectors (RTDs). It also includes 2 high-speed channels sampling up to 100Hz and boasts a massive 16GB internal memory to house 800 million readings.

2. Networking & Gateways

• Squirrel SQHUB: A communications gateway designed to break individual loggers out of isolation. By stacking and linking units through the SQHUB, users can expand a system up to 128 synchronised channels. It handles diverse industrial networking environments by provisioning connections over Wi-Fi, Ethernet, OpenThread, LoRa, or 4G.

3. Squirrel 450 and 850 Series

The SQ450 and SQ850 series serve as compact, cost-effective, and highly portable solutions for smaller field-testing deployments.

• Channel Architecture: The 450 features 4 universal inputs, while the 850 provides 8 universal inputs.
• Input Versatility: Each isolated channel can be independently configured to measure DC voltage, current, or temperature (supporting both thermistors and thermocouples). Specialised models like the 451MC even integrate serial inputs tailored for Vaisala weather sensors.
• On-board Scaling: They feature standard “EU range” scaling, allowing the logger to convert raw electrical inputs directly into user-defined engineering units (e.g., displaying 0-10V as 0-100 %RH directly on their physical display.

4. Squirrel 1000 Series.

The SQ1000 series is a fully customisable wired platform built on a distinct modular motherboard architecture.

• Massive Scalability: While a basic unit handles standard inputs, it can be expanded at the factory using up to eight specialised input modules to measure up to 124 analogue or digital channels simultaneously.
• Custom Mix-and-Match: Users can build a single logger that blends a unique array of inputs, including PT100 RTDs, pulse counters, high-voltage sensors, event states, and even specialized pH modules.
• High-Speed Capturing: The 1000 series supports rapid sampling intervals as fast as 0.1 seconds across 8 channels and secures up to 2 million readings in internal, battery-backed non-volatile memory.

5. Application-Specific Profilers

• Squirrel OQ610 & OMK610: Specialised, compact thermal profilers tailored specifically for paint and powder-coating ovens. Featuring 6 dedicated thermocouple inputs and wrapped in custom thermal barriers, these units travel straight through industrial ovens to map precise curing temperatures.