The Squirrel 2040 Wi-Fi series combines a high channel count, high performance, universal inputs with the
simplicity of Wi-Fi networking in a compact and portable instrument.
Using multiple 24-bit analogue to digital convertors, twin processors and removable memory options the SQ2040
Wi-Fi provides great flexibility to handle a wide range of complex and demanding multi-channel applications.
The Squirrel SQ2040 Wi-Fi is the ideal data logger for industrial, scientific research and quality assurance
applications.
The SQ2040 Wi-Fi provides standalone data acquisition, advances networked solutions and data analysis straight
out-of-the box.
Key Features
Fully configurable via the integrated key pad
16 true differential or 32single ended universal analogue inputs for voltage, current or resistance
measurements plus 2 high voltage, 4 pulse and 8 digital event/state inputs
Analogue inputs can be used with thermistors, thermocouples, 2,3 or 4 wire RTD temperature sensors and 4-20mA signals
Logging rates of up to 100Hz on up to 4 channels
Standard (802.11b) wireless Ethernet (Wi-Fi), USB and RS232 communication ports
Internal memory storage for up to 14 million readings
Download of internal data to removable MMC / SD card
Sensor power and FET outputs for use with external devices
Calculated channels derived from real channels using advanced mathematical functions e.g. log(x); ln(x); sqrt(x)
Analogue inputs supported
Thermistors
Thermocouples
Pt100 / Pt1000 (maximum of eight 3- or 4-wire Pt100 / Pt1000 sensors
Voltage
Current
Resistance
The Squirrel 2040 series comprises two models:
Squirrel 2040-2F16 Wi-Fi
Up to 100 readings per second on 2 channels
Two 24-bit analogue to digital converters
Squirrel 2040-4F16 Wi-Fi (high speed model)
Up to 100 readings per second on 4 channels
Four 24-bit analogue to digital converters
4 pulse rate / counter inputs (4 at up to 64kHz, 2 at up to 100Hz)
Eight 3- or 4-wire Pt100 / Pt1000

Data Sheet
Getting Started Guide
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Communications - Wireless Ethernet (Wi-Fi), USB and RS232 serial ports are
inbuilt. This allows simple connection to either a PC based
TCP/IP network, a wireless to PC connection or to a GSM
modem for remote data downloading. This flexibility enables
global data access and retrieval as well as complete system
integration of the SQ2040 Wi-Fi series into complex and
critical applications.
Multiple configurations stored in the logger - Up to six logger configurations ( channel type, names, logging
speeds, triggers etc.) together with the current configuration
can be held in the logger`s internal memory. Additional
configuration settings can also be loaded from the external
MMC/SD memory card. This allows the operator to quickly
and easily switch between logger configurations without the
need for a PC.
Software configuration via SquirrelView - The SquirrelView software (supplied with the SQ2040 series
data logger) allows logger configuration, data download and
export whilst giving the user full control over SQ2040. The
optional SquirrelView Plus gives the used access to many
advanced data analyses and archiving/transfer features. Refer
to SquirrelView data sheet for specifications.
Concurrent sampling - The SQ2040 series uses multiple analogue and digital
converters that enables true concurrent sampling and logging.
It Allows the user to configure a channel to log at a rate of
100Hz whilst retaining different sample speeds on the other
channels. Ideal for measuring dynamic parameters that change
at different rates such as temperature and pressure.
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