>> Measures Current, Voltage, Resistance plus High Voltage, Pulse and Digital Event/State Inputs with 8 Digital Inputs
>> 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
>> Built-in Ethernet Networking Connectivity
>> Removeable SD Card and Built-in USB and RS-232 Ports
>> RS232 Port for Modem and Wireless Connection via Interface Units (Sold Separately)
>> External Input Sensors (Sold Separately)
>> Includes USB Cable, 6 Alkaline Batteries 4 Current Shunt Resistors, User Manual and SquirrelView Software for Setup and Data Download
Squirrel 2020 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 Power Supply. |
| 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 1.8 Million Samples/Readings External: 1 GB 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 (2-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) Ethernet: 10/100 Base T (TCP/IP) USB: 1.1 and 2.0 Compatible Other: GSM, WiFi and PSTN Modems (External Attachments) |
| 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 Arm/Disarm/Pause/Continue 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: 90% at 40C 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) |
Application Notes
Understanding the Differences Between State, Event and Pulse Datalogging. (.pdf 300KB)
Documentation
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 Software Compatibility Guide (.pdf 28 KB)