Squirrel SQ2020 w/ Wi-Fi Connectivity & 100 Hz Sampling Rate

>> Measures Current, Voltage, Resistance plus High Voltage, Pulse and Digital Event/State Inputs with 8 Digital Inputs
>> Intergated Wi-Fi Ethernet Networking 
>> 8 Differential or 16 Single Ended Channels

>> Analogue Inputs Supported: Thermistors, Thermocouples, RTD Sensors (2, 3 or 4 Wire), Voltage, Current and Resistance
>> Programmed Using LCD Display and 4 Integral Buttons or Software
>> 4 Alarm Outputs and 4 Pulse Rate/Counter Inputs (64kHz and 100Hz)
>> 0.05% Accuracy
>> Sampling Rate of 100/Second (2 Channels)
>> Stores up to 1.8 Million Readings on Internal Memory 
>> Built-in Ethernet Networking Connectivity
>> Removeable SD Card and Built-in USB and RS-232 Ports 
>> External Input Sensors (Sold Separately)
>> Includes USB Cable, 6 Alkaline Batteries, 4 Current Shunt Resistors, Wall Bracket, User Manual and SquirrelView Software for Setup and Data Download

Squirrel 2020 Wifi Specifications

Data Channels Single-Ended: 16 Analog Channels
Differential: 8 Analog Channels
(Single-Ended or Differential Available, Not Both)
Analog to Digital Converter: 2 
3 or 4 Wire Pt100/1000: 4
Pulse: 4 (2 x 64kHz & 2 x 100Hz)
Event (Digital): 8 State Inputs or 1 8-Bit Binary
High Voltage: 2
Temperature: 1 (Internal)
Analog Inputs Accuracy (Voltage & Resis.): ±(0.05% + 0.025% Range)
Common Mode Rejection: 100dB
Input Impedance: > 1M Ω
Linearity: 0.015%
Series Mode Line Rejection: 50/60Hz 100dB
Analog to Digital Conversion Type: Sigma - Delta 
Resolution: 24 Bit 
Sampling Rate: up to 10, 20* or 100* Readings per Second
* With Mains rejection Off.
Alarm Outputs 4 (Open Drain FET - 18.0 Volts - 0.1 Amps)
Power Output External Devices: Regulated 5 Volts DC at 50 mA or Logger Supply Voltage (100mA)
Time and Date Built-In Clock in 3 Formats
Scaling Data Displays Readings in Preferred Engineering Units
Data Storage Capacity Internal: 16MB Storing up to 14 Million Samples/Readings
External: 1 GB Removable SD Card
DC Voltage Ranges -0.075 to 0.075 Volts
-0.15 to 0.15 Volts
-0.3 to 0.3 Volts
-0.6 to 0.6 Volts
-0.6 to 1.2 Volts
-0.6 to 2.4 Volts
-3.0 to 3.0 Volts
-6.0 to 6.0 Volts
-6.0 to 12.0 Volts
-6.0 to 25.0 Volts
4.0 to 20.0 Volts*
4.0 to 40.0 Volts*
4.0 to 60.0 Volts*
* High Voltage (Max of 2 Can be Selected)
Current Range Differential: 4 to 20mA, -30mA to 30.0mA 
(Requires External 10Ω Shunt)
Thermocouple Range J-Type: -200°C to 1200°C (-328°F to 2192°F) 
K-Type: -200°C to 1372°C (-328°F to 2501°F)
N-Type: -200°C to 1300°C (-328°F to 2372°F) 
R-Type: -50°C to 1768°C (-58°F to 3214°F) 
S-Type: -50°C to 1768°C (-58°F to 3214°F) 
T-Type: -200°C to 400°C (-328°F to 752°F) 
(Differential and Single Ended)
Resistance Range 3-Wire and 4-Wire: 0 to 500Ω, 0 to 4,000Ω
Thermistor Range U & Y-Type: -50°C to 150°C (-58°F to 302°F)
Pt100/1000 Range
(3 or 4-Wire)
-200°C to 850°C (-328°F to 1562°F)
Internal Reference Temperature -50°C to 150°C
Pulse Count Range 0 to 100Hz (2 Input)
0 to 64kHz (2 Input)
0 to 16,000,000 Count
Digital State/Event Ranges 8 State Inputs or 1 x 8 Bit Binary
Digital/Alarm Outputs 2 Open Drain FETs, 18 Volts, 0.1 Amp
Calculated Channels Up to 16 Virtual Channels Derived from Physical Input Channels
Resolution Up to 6 Significant Digits
Communication Standard: RS-232 (Auto Bauding to 115,200 Baud)
USB: 1.1 and 2.0 Compatible
Other: GSM, Wi-Fi and PSTN Modems (External Attachments)
Wireless Communication Wireless Ethernet (Wi-Fi): 802.11b, 2.4GHz, 1 to 14 Channels 
Security: Open, WEP (64 or 128bit Encryption), WPA or WPA2/802.11i 
Network: Infrastructure Only with Specified SSID, or any Network with no SSID 
Note: External Power Supply Required for Wi-Fi
Power Supply Internal: 6 AA Alkaline Batteries
External: 10 to 18 Volts DC Power Supply
NOTE: Reverse Polarity and Over-Voltage Protected
Power Consumption Sleep Mode: 600 µA
Logging: 40 to 80 mA
Display/Keypad 2 Line x 20 Characters LCD Display
Display Functions Battery State and External Power Indicator
Keypad Lock
Meter Any Channel or Alarm
Select up to 6 Pre-Stored Setups
Status/Diagnostics/Memory/Time and Date
Download to MicroSD Card
Enclosure ABS Material
Operating Modes >> Stop When Full
>> Overwrite
Operating Range Temperature: -30°C to 65°C
Humidity: 0 to 90% at 40°C non-condensing
Standards Compliance CE
Weight 1.2 kilograms
Dimensions 23.5 cm x 17.5 cm x 0.55 cm (175mm x 135mm x 55mm)


Squirrel 2020 Getting Started Guide (.pdf 1.5 MB)
Squirrel 2020 Logging Speed Guide (.pdf 100 KB)
Squirrel 2020 Ethernet Configuraton Guide (.pdf 400 KB)
Squirrel 2020 Ethernet Wireless and Wired Configuraton Guide (.pdf 400 KB)
Squirrel Software Compatibility Guide (.pdf 28 KB)

Application Notes

Understanding the Differences Between State, Event and Pulse Datalogging. (.pdf 300KB)