Squirrel SQ2040 - Powerful data loggers for all applications

Product Description


16 to 32 channel universal inputs suitable for temperatureprobes, humidity sensors, and pressure transducers. Maximum dataacquisition speed 100Hz on 2-channels.





Technical Specification

Analog Inputs

Accuracy: (at 25°C) voltage and resistance ± (0.05% readings + 0.025% range)

Common mode rejection: 100dB

Input impedance: > 1MW

Linearity: 0.0015%

Series mode line rejection: 50/60Hz 100dB

Analog-Digital Conversion

Type: Sigma-Delta

Resolution: 24bit

Sampling rate: up to 10, 20* or 100* readings per second per ADC

Alarm Outputs

4 x open drain FET (18V 0.1A)

Power output for external device

Regulated 5 VDC at 50mA or logger supply voltage at 100mA

Time and date

In built clock in 3 formats

Scaling data

Displays readings in preferred engineering units.


Internal: 16Mb (Up to 1,800,000 readings)

External: Up to 64Mb - removable MMC (For transferring internal memory and storing setups only)

Calculated Channels

Up to 16 virtual channels derived from physical input channels


Up to 6 significant digits

Programming/Logger Setup

SquirrelView or SquirrelView Plus software


Standard: RS232 (Auto bauding to 115k baud) USB 1.1 and 2.0 compatible

External options: Ethernet, GSM and PSTN Modems

Power Supply

Internal: 6 x AA Alkaline batteries

External: 10-18VDC, Reverse polarity and over-voltage protected

Power Consumption @ 9V

Sleep mode: < 600µA

Logging: 40-120mA

Memory Modes (internal only)

Stop when full or overwrite

Display and Keypad

2 line x 40 character LCD display

Battery state and external power indicator

Operating Environment

-30°C to +65°C

Humidity: 90% at 40°C non condensing


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