SQ2020

Technical Specification

Analog Inputs

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

Common mode rejection: 100dB

Input impedance: > 1MW

Linearity: 0.015%

Series mode line rejection: 50/60Hz 100dB

Analog-Digital Conversion

Type: Sigma-Delta

Resolution: 24bit

Sampling rate: 1F8-up to 20 readings per second, 2F8-up to (2 x 20) readings per second

Alarm Outputs

4 x open drain FET (18V 0.1A Max)

Power Output for external Device

Regulated 5 VDC or supply voltage

Time and Date

In built clock in 3 formats

Scaling Data

Displays readings in preferred engineering units.

Memory

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

External: Up to 64Mb - removable MMC(For transferring multiple internal memory downloads to the removable external MMC memory)

Calculated Channels

Up to 16 virtual channels derived from physical input channels

Resolution

Up to 6 significant digits

Programming/Logger set up

SquirrelView or SquirrelView Plus software

Communication

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

External options: GSM and Ethernet

Power supply

Internal: 6 x AA Alkaline batteries

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

Power consumption

Sleep mode: 600µA

Logging: 110mA at 9VDC

Dimension and Weight

Dimensions: W235 x D175 x H55mm

Weight: Approx 1.2kgs

Enclosure material: ABS

Memory modes (internaly only)

Stop when full or overwrite

Display and Keypad

4 navigation keys

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

Standard ranges for d.c. voltage/current and resistance channels:

Each voltage/current channel can be any of the voltage or current ranges below. Mixed differential and

single ended configurations are permitted.

Note: current ranges use differential input channels.