Electronics and Electrical Instrumentation Data Acquisition and ControlData Loggers & Data Logging Solutions from ACR Systems Skip to content ACR Systems Search Personal tools You are not logged in Log in Register Sections Products Support About News Events Contact You are here: Home Data Loggers & Data Logging Solutions from ACR Systems Document Actions ACR Systems manufactures a line of world class data loggers that measure and record temperature, relative humidity, electric current, pressure, process signals, pulse frequency, power quality and more. - Quick Link - JR-1000 JR-1001 OWL 100 OW