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The Heron barLog is a barometric data logger that records atmospheric pressure so it can be used to compensate readings from a non-vented (absolute) groundwater data logger, correcting for changes in barometric pressure over the monitoring period. Application Deployed once per job location (recommended within roughly a 5km/3mi radius), suspended above the water table in a well or nearby on site — never submerged. Used alongside dipper-Log 128+ or dipper-Log TOUGH+ absolute loggers for accurate compensated water level data. Key Specs 128,000 data sets, 21,333/min download speed Water level accuracy +/-0.05%FS, temperature accuracy +/-0.05°C Expected battery life up to 15 years 145mm length, 22mm diameter, 170g weight 2-year warranty Shop cables and accessories for the barLog
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🇺🇸 Ship from USA · On Agora since 2026
$351.50