FAQ Page

Frequently Asked Questions

FAQ Knowledge Base

Questions? Please browse our FAQ Knowledge Base, you might just find the solution you're looking for.

Why do our 12 sensor EnviroPro probes only output 9 sets of sensor readings?

Your logger is using “M” commands to retrieve data.
EnviroPro soil probes comply to the SDI-12 communication protocol. Early versions of this protocol can only support 9 sensor readings from each node. Later versions can support more than this using “C” (concurrent measurement) commands rather than “M” (measurement) commands. Try re configuring your logger to us “C” command, or contact your logger supplier for assistance.
By default 120cm EnviroProbes return measurements from 10, 20, 30, 40, 50, 60, 80, 100 and120cm depths when presented with ” M” commands.
By default 160cm EnviroProbes return measurements from 10, 20, 40, 60, 80, 100, 120, 140 and 160cm depths when presented with ” M” commands.

If my logger can only read 9 sensors, can I change what soil depths are measured by the EnviroPro probe?

Yes. This can be done using an EPCU configuation tool. Download EPCU User Manual.
By default, 120cm EnviroProbes return measurements from 10, 20, 30, 40, 50, 60, 80, 100 and 120cm depths when presented with ” M” commands.
By default, 160cm EnviroProbes return measurements from 10, 20, 40, 60, 80, 100, 120, 140 and 160cm depths when presented with ” M” commands.

Can we update our existing, installed EnviroPro soil probes to measure salinity?

Yes. This can be achieved by purchasing an upgrade key from Entelechy or via your supplier. There are two methods to execute the upgrade using the key(s).
1. Using an EPCU config unit. Download EPCU User Manual.
2. Sending the key via your logger's transparent mode using SDI-12 extended commands (This method is only available on G series probes, and only if your logger supports transparent mode).

How many EnviroPro probes can I connect to my logger?

The EnviroPro probes are SDI-12 compliant. This standard can support up to 62 unique node addresses, or 62 individual sensor devices, including any devices other than EnviroPro soil probes.

What logger can I connect EnviroPro soil probes to?

Any SDI-12 compliant logger can be connected to Enviroprobe soil probes.

What is the maximum cable length we can use to connect EnviroPro probes to our logger?

The SDI-12 standard states -
“ The SDI-12 bus is capable of having at least 10 sensors connected to it, each with 200 feet of cable. With fewer sensors, longer cable lengths are possible.”
EnviroPro sensors have been designed to meet or exceed this standard.
EnviroPro cannot guarantee cable lengths beyond this specification, since the number of devices, the types of devices, and the cable guage used can all affect the performance of the SDI-12 bus being used.

Do EnviroPro soil probes support RS485?

Providing the protocol layer is still SDI-12 compliant, an RS485 half duplex hardware implimentation may be used. EnviroPro can provide an SDI-12 to RS485 converter if required. (Contact Entelechy or your supplier for more information.)

What is the expected life of EnviroPro soil probes?

EnviroPro soil probes are fully encapsulated, providing long term stability and imunity to environmental damage and aging. They are manufactured to the highest standards and are designed with acuracy, repeatability and long term durability being paramount. They carry an un-paralelled 5 year warranty against defect or failure and should be expected to last many, many years beyond that.

What kind of maintenance is needed for EnviroPro soil probes?

EnviroPro Soil probes are completely maintenance free.

Will EnviroPro Soil Probes need to be re-calibrated?

No. All EnviroPro soil probes are individually calibrated for life.

How do I re-locate an EnviroPro soil probe?

EnviroPro probes may be removed and relocated using EnviroPro removal and installation tools. Download Installation Manual.

What is the warranty on EnviroPro soil probes?

EnviroPro soil probes are warranted against manufacturing defects or failure for a period of 5 years from date of purchase.

What is an EPCU (EnviroPro Configuration Unit) and what is it used for?

An EPCU is an accessory to assist in easily configuring or upgrading EnviroPro soil probes.
They can also to be used to read and display instantaneous readings from EnviroPro probes, independantly of loggers, as well as re-configure probes or to carry out some basic diagnostics.