Specifications - Omega Engineering OM-SQ2020 Series User Manual

ANALOG INPUTS
Basic accuracy (5-45°C): ..............................................± (0.05% readings + 0.025% range)
Common mode rejection: ...........................................................................................100dB
Input impedance: ...................................................................................................> 1MOHM
Linearity: ..................................................................................................................0.0015%
Series mode line rejection:...........................................................................50/60Hz 100dB
DIGITAL INPUTS
Zero input voltage....................................................................... 0 to 0.5V (or shorted input)
One input voltage..................................................................2.7 to 5V (or open circuit input)
Input protection......................................will turn on below about -0.5V and above about 6V
ANALOG-DIGITAL CONVERSION
Type: ....................................................................................................................Sigma-Delta
Resolution: .....................................................................................................................24bit
Sampling rate: ..................................................................Up to 20/100 readings per second
ALARM OUTPUTS.......................................................................4 x open drain FET (18V 0.1A Max)
SENSOR POWER SUPPLY..............................Regulated 5 VDC (50mA) or supply voltage (100mA)
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 256Mb removable MMC/SD memory card
RESOLUTION.................................................................................................Up to 6 significant digits
PROGRAMMING/LOGGER SET-UP..................... ..........OMEGALOG
COMMUNICATION.......................................................................................USB 1.1 and 2.0 / RS232
External options: .......................................................................GSM, Ethernet and wireless
POWER SUPPLY
Internal:............................................................................................6*x AA Alkaline batteries
External: ..........................................10-18VDC Reverse polarity and over-voltage protected
* Maximum operating temperature for supplied alkaline batteries is 50°C
Version 1.2 - October 08
Page 20

9. Specifications

Note: 100Hz Mode not available on 1F8 models
® ®
or OMEGALOG Plus software
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