tender for datalogger (8 analog channels) suitable for the configuration including inside and outside sensors - data-logger, datalogger should be portable, user friendly configurable with easy gui software, weatherproof with rechargeable battery. no. of channel: analogue: 8 or more individually configurable with selectable analogue range for most accurate measurement; selectable ranges: 0 to 5000mvdc, 0 to1000mvdc, 0 to 100 mvdc, 0 to 20ma, pt100 & pt1000 (for raw temperature measurement), -resolution: 24-bit accuracy: 0.06 of fs digital: digital i/p: 4; digital o/p: 2, serial inputs: rs 485, rs 432, sdi 12, modbus rtu / modbus tcp, sampling frequency: 10 hz, data storage: onboard & micro sd card, selectable from 1 minute to 24 hours, memory capacity: >8gb/ expandable for both onboard and external card, data retrieval through usb stick shall also be available, battery/power: inbuilt, rechargeable, communication: ethernet, wi-fi, gprs /gsm/3g/4g/cdma, operating temperature range: -40c to +70c, rh range: 0-100 (ip65 protection), other features: over the air firmware update, desktop & mobile app, product should be ce or equivalent compliant.
