ACR SmartReader Plus 4 Specifications

Low Pressure Differential Data Logger

The ACR Low Pressure Differential SmartReader Plus 4 data logger is designed to be used in applications where precise and very low differential pressure measurements are required. Features: Very accurate Extra fine pressure resolution 12 bit resolution Temperature compensated 10-year battery life Up to 128 KB memory User-configurable Accessible remotely by modem Network capable

Product Specifications

No. of channels	Two. (One for the internal compensating temperature thermistor and one for the pressure sensor)
Ranges (Water Column)	+/-0.5", +/-1.0", +/-2.0", +/-5.0," +/-10".
Maximum Pressure	+/-40" WC.
Type	Silicone piezoresistive strain gauge.
Media	Non-corrosive gases and dry air.
Temperature Range      Operating      Compensated	-40 to 70oC (-40 to 158oF). 0 to 70oC (32 to 158oF).
Accuracy      Calibrated        Thermal      Non-linearity	+/-0.5, +/-1, & +/-2"    0.05" W.C. +/-5 & +/-10"    0.1" W.C. +/-0.5% FS (over-compensated range). +/-0.05% FS (best fit straight line).
Resolution	< 0.01" WC.
Hysteresis & Repeatability	+/- 0.05% FS (typical).
Long Term Stability	+/-0.5% FS.
Memory Size	32 KB.
Accuracy Curve	Temperature Sensor Accuracy with ACR SmartReader Plus
Common Specifications	ACR SmartReader Plus Common Specifications
Software Specifications	TrendReader - ACR SmartReader Plus Data Logger Software RealTime Graphing Software Talk-Back Software
Remote & Network communications	ACR SmartReader Plus Networking and Remote Communications