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The portable data logger of the OM-SQ2020 Series combines high performance, powerful features and universal inputs in a compact and easy-to-use instrument. Using high accuracy 24-bit analogue to digital converters, removable memory and Ethernet networking (on the OM-SQ2020-2F8), the OM-SQ2020 Series is the ideal data logger for industrial, scientific research and quality assurance applications. Together with our comprehensive suite of software, the OM-SQ2020 provides standalone data acquisition, realtime metering and data analysis straight out-of-the-box.

Input Connections

The OM-SQ2020-1F8 data logger has a single analogue to digital converter (A/D) which corresponds to inputs on blocks A through to D. Each connection block will accept up to 2 differential inputs or up to 4 single ended inputs (it is not possible to mix single- ended and differential inputs on a block). The OM-SQ2020-2F8 data logger has two analogue to digital converters (A/D’s) which increases logging flexibility over the OM-SQ2020-1F8 model. The first corresponds to inputs on blocks A and B and the second corresponds to inputs on blocks C and D. Each connection block will accept up to 2 differential inputs or up to 4 single-ended inputs (it is not possible to mix single ended and differential inputs on a block). 

Concurrent Sampling

The OM-SQ2020 Series uses multiple analogue to digital converters that enables true concurrent sampling and logging. This allows the user to configure a channel to log at a rate of 100 Hz (20 Hz on OM-SQ2020-1F8) while retaining different sample speeds on other channels. This makes the OM-SQ2020 Series ideal for measuring dynamic parameters that change at different rates such as temperature and pressure. 

Communications

Ethernet (on OM-SQ2020-2F8), Wi-Fi (on OM-SQ2020-2F8-WIFI), USB and RS-232 serial ports are built-in. 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 OM-SQ2020 series into complex and critical applications. 

Multiple Configurations Stored in the Data 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. 

Comprehensive Software Configuration

The OM-SQ-SOFT software (supplied with the OM-SQ2020 series data loggers) allows logger configuration, data download and data export while giving the user full control over the OM-SQ2020. The optional OM-SQ-SOFT-PLUS software gives the user access to many advanced data analysis and data archiving/transfer features. The optional OM-SQ-SOFT-PLUS software lets you quickly and easily analyze the data from your OM-SQ2020 data logger in a familiar explorer style interface. Data can be displayed with 2 different auto scaling Y-axis. This is particularly useful when displaying widely varying data from different sensors on one graph. You can also zoom in on areas of interest, use a cursor to pick out exact values, times and dates, get a statistical summary of your data, set high and low alarm thresholds and, using the calculation function, you can create new virtual channels from existing channels. The OM-SQ-SOFT-PLUS software also incorporates a report generation facility, which allows you to create custom report templates consisting of a title page with descriptive text, headers and footers, graphs, tabular list of data, statistics and data logger setup information. Templates can be setup with any of these combinations and saves time when preparing similar presentations of data. 

Specifications

ANALOGUE INPUT Accuracy: See Chart on PDF

Common Mode Rejection: 100 dB

Input Impedance: >1 MΩ

Linearity: 0.015%

Series Mode Line Rejection: 50/60 Hz 100 dB 

Connections: Detachable screw terminal blocks 

ANALOGUE TO DIGITAL CONVERSION

Type: Sigma-Delta

Resolution: 24-bit

Sampling Rate: Up to 10, 20* or 100* readings per second per ADC * With mains rejection off 

MEMORY

Internal: Up to 128Mb (up to 14 million readings)

External: Up to 1Gb removable MMC/SD (for transferring internal memory & storing setups only)

ALARM OUTPUTS

4 x open drain FET (18 V 0.1 A) 

Digital I/O Connections: DB25F connector 

CALCULATED CHANNELS

Up to 16 virtual channels derived from physical input channels 

RESOLUTION Up to 6 significant digits 

PROGRAMMING/LOGGER SETUP

OM-SQ-SOFT or OM-SQ-SOFT-PLUS software; Software compatible with WIN 2000/XP/VISTA/7/8 

COMMUNICATION

Standard: RS-232 (automatic baud rate selection to 115200 baud)

Ethernet 10/100 base TCP/IP USB 1.1 and 2.0 compatible

External Options: GSM, WIFI and PSTN Modems 

POWER SUPPLY

Internal: 6 “AA” alkaline batteries (included) External: 10 to 18 Vdc reverse polarity and over-voltage protected 

POWER CONSUMPTION @ 9V

Sleep Mode: 600 µA

Logging: 40 to 130 mA 

DISPLAY AND KEYPAD

128 x 64 graphic LCD display; 4 button keypad 

Navigate to:

Arm/disarm/pause/continue; meter any channel or alarm; select from up to 6 x pre-stored setups; 

status/diagnostics/memory/time and date; download to MMC/SD 

OPERATING ENVIRONMENT

Temperature: -30 to 65°C 

Humidity: 90% at 40°C non-condensing 

GENERAL

Power Output for External Device: Regulated 5 Vdc at 50 mA or logger supply voltage at 100 mA

Time and Date: Built-in clock in 3 formats

Scaling Data: Displays readings in preferred engineering units

Dimensions: 175 H x 235 W x 95 mm D 

Weight: Approx. 1.2 kg 

Enclosure Material: ABS

Memory Modes (Internal Only): Stop when full or overwrite