ACR SmartReader Plus 2 Specifications

Four Channel RH and Temperature Data Logger

SmartReader Plus 2 is a self-contained data logger that is able to record both temperature and relative humidity - right out of the box. The on-board RH sensor is temperature compensated permitting reliable, worry-free RH readings. For remote sensing, simply attach an external temperature or temperature/RH probe. Features: 12 bit resolution 4 channels 10-year battery life Up to 128 KB memory User-configurable Accessible remotely by modem Network capable N.I.S.T. traceable measurements Includes calibration certificate

Product Specifications

No. of channels	Four. (One for the internal temperature sensor, one for the internal RH sensor, one for optional external RH and one for optional external temperature or resistance).
Relative Humidity Sensor	Capacitive thin polymer film.
Range	0 to 95% (non-condensing).
Accuracy	+/-3% RH from 10 to 90% (-20 to 40oC [-4 to 104oF]).
Resolution	Better than 0.04% between 25 & 60% RH at 25oC (77oF).
Response Time	Adequate ventilation reduces the response time which is approximately 5 minutes in still air.
Memory Size	32 KB, 128 KB.
Environmental Conditions	Like all relative humidity sensors, when exposed to contaminants and/or extreme environmental conditions accuracy degradation could result. For maximum long-term stability, sensor should not be exposed or subjected to organic solvents, corrosive agents (strong acids, SO2, H2SO4, CI2, HCl, H2S, etc.), and strong bases (compounds with PH greater than 7). Dust settling on the sensor surface will not affect sensor performance except possibly to decrease the speed of response. For more information on the RH sensor's tolerance to chemicals, see Accessories section under Relative Humidity.
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
Accessories	ACR EH-020A Temperature & RH Probe ACR ET Series Temperature Probe