Jenco Instruments Equipment List Jenco Instruments - 3175Manufactured by Jenco InstrumentsJenco EC3175 is a new conductivity meter with temperature readout, backlit LCD display, selectable cell constant and a... Jenco Instruments - 3840Manufactured by Jenco InstrumentsVisionPlus EC3840 is an easy to use, IP67 rated portable conductivity meter with TDS, salinity and temperature... Page 1 of 1 1Ask a QuestionGet answers for Jenco Instruments ProductsSign in to Submit QuestionSubmit Question