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Product?description:

Stem?flow?is?one?of?the?subjects?in?the?study?of?water?balance?in?forest?ecosystems.?In?hydrology,?stemflow?is?the?flow?of?intercepted?water?down?the?trunk?or?stem?of?a?plant.?Stem?flow,?along?with?through?fall,?are?responsible?for?the?transferral?of?precipitation?and?nutrients?from?the?canopy?to?the?soil.?QT-Y/H?stem?flow?collector?is?used?to?collect?and?analyze?the?stem?flow.

QT-Y/H?Automatic?stem?flow?collector???????QT-Y/H?Automatic?stem?flow?collector

Principle:

The?system?is?composed?of?collecting?units,?a?flow?sensor?and?a?data?logger.?It?can?continuously?and?automatically?record?the?start?time,?end?time?and?duration?of?stem?flow,?and?also?stem?flow?rate.?The?logged?data?can?be?export?to?excel?or?text?file?format?to?facilitate?data?processing.

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Features：

1.?The?system?is?suitable?for?all?kinds?of?trunks.?QT-Y?is?better?for?trunk?diameter?less?than?14?cm,?QT-H?is?for?more?than?14?cm.

2.?It?is?easy?to?install?and?battery-powered,?no?need?of?external?power?supply.

3.?The?system?is?equipped?with?a?sensor?with?high?resolution?of?4.13?ml

4.?The?data?logger?can?record?the?air?temperature?when?the?stem?flow?is?running.

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Technical?Parameters:

Recording?range:?0?-?66000ml,?resolution:?4.13ml;

Storage?capability:?16,000?records;

Can?set?the?start?time?and?date;

Download?mode:?download?data?through?the?infrared?downloader?with?USB?interface

EEPROM?memory,?no?data?loss?when?power?outage;

Fully-sealed?data?logger?can?be?placed?in?the?flow?sensor?device;

Internal?LED?lights?indicate?operating?status;

The?battery?can?last?about?1?year.

Event?resolution:?1?second;

Temperature?measurement?range:?-20-70℃,?temperature?accuracy:?0.5℃,?resolution:?0.1℃;

Time?accuracy:?±1?munities/week;

The?system?is?equipped?with?a?protection?case