Seametrics BaroSCOUT 2X Barometric Logger 150-pack The Aqua TROLL 500 is

The Aqua TROLL 500 is a fully customizable five-port multiparameter sonde with capacity for four interchangeable sensors and an antifouling wiper

no argon supply

The Solinst 104 Sonic Water Level Meter uses an ultrasonic probe to measure depth to water without physically contacting the water surface

and software

0 LPM sample from up to 100 feet away through stainless steel fittings and flame arrestors

Seametrics BaroSCOUT 2X Barometric Logger 150-pack The Aqua TROLL 500 isThe Seametrics BaroSCOUT 2X is a barometric pressure and temperature datalogger built to compensate absolute (non vented) water level sensors for changes in atmospheric pressure. Sharing the same compact, 0. 875" (2. 22 cm) diameter body as the LevelSCOUT 2X, it logs up to 100,000 records on a 4. 5 year battery and is the standard reference sensor for groundwater level monitoring networks. MANUAL Constructed from 316 stainless steel, acetal, and