Omega Engineering OM-SQ2040 Series - Manual (Page 23)

28923 Version 1.4 - March 2011
Page 23
9. Specifications
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
EM field and Conducted RF effect: ………………….…………………....……...…….< 1% †
.
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
Note: 100Hz Mode not available on 1F8 models
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: ..........................................................................128Mb (Up to 14,400,000 readings)
External:......................................................... Up to 1Gb removable MMC/SD memory card
RESOLUTION.................................................................................................Up to 6 significant digits
PROGRAMMING/LOGGER SET-UP..........................OMEGALOG
® or OMEGALOG ® Plus software
COMMUNICATION.......................................................USB 1.1 and 2.0 / RS232 / Ethernet (not 1F8)
External options: .......................................................................GSM, Ethernet and wireless
POWER SUPPLY
Internal:............................................................................................6*x AA Alkaline batteries
External: ..........................................10-18VDC Reverse polarity and over-voltage protected
† This effect may be larger at 288kHz, re-orientate the input cables or add a suitable axial
ferrite bead close to the logger input if required
* Maximum operating temperature for supplied alkaline batteries is 50°C