SMARTREADER PLUS 2

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Relative Humidity Measurement Solution
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
umidity – 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.

PRODUCT SPECIFICATION

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 - 128 KB.
Environmental Conditions - Like all relative humidity sensors, when exposed to contaminants and/or extreme environmental conditions, accuracy degradation could result. For maximum longterm stability, sensor should not be exposed or subjected to organic solvents, corrosive agents (strong acids, SO2, H2SO4, Cl2, HCl, H2S, etc.), and strong bases (com pounds with PH greater than 7). Dust settling on the sen sor surface will not affect sensor performance except pos sibly to decrease the speed of response. For more information on the RH sensor’s tolerance to chemicals, see Accessories section under Relative Humidity.
Accessories - ACR EH-020A Temperature & RH Probe
ACR ET Series Temperature Probe

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