Specifications

P a g e | 153
a. Explanation- Oxygen sensor is out of spec. Potentially bad sensor.
b. Solution – Restore factory calibration on O
2
sensor and recalibrate. If recalibration does not
solve the error then power down Envision® unit and reconnect to the Trimble handheld
computer. If this does not correct the problem call technical support at Elkins Earthworks®
330-725-7766.
9) “Low Flow Rate”
a. Explanation- Low Flow from clogged or pinched sample train.
b. Solution – Check that the sample train hoses are not pinched. Check inline filters and make
sure that they are clear and free from debris and liquids. If this does not correct the problem
call technical support at Elkins Earthworks® 330-725-7766.
10) “Over Pressure”
a. Explanation- Pressure applied to pressure sensors are higher than sensors a specified for.
b. Solution – Disconnect hoses from measurement location and recalibrate sensors. Verify that
the pressure on the sample point is within the tolerance of the Envision® gas analyzer. If this
does not correct the problem call technical support at Elkins Earthworks® 330-725-7766.
11) “Battery low. Plug in charger”
a. Explanation- Pressure Low battery on Envision unit
b. Solution – Plug meter in to charge. If this does not correct the problem call technical support
at Elkins Earthworks® 330-725-7766.
12) “Battery level is critically low”
a. Explanation- Battery level is low.
b. Solution – Charge Envision® gas analyzer. If the unit does not charge then call technical
support at Elkins Earthworks® 330-725-7766.
13) “Unit over temperature. Cool unit”
a. Explanation- Measurement Unit over temperature.
b. Solution – Move the Envision® unit into a cooler environment. If the error does not clear then
call technical support at Elkins Earthworks® 330-725-7766.
9.2 Other error codes
Listed below are additional error messages that may show up during operations:
1) “Unable to connect to selected meter”
a. Explanation- Connection attempt failed during meter selection
b. Solution – Make sure that the Envision® unit is on and the Bluetooth light is blinking before
tapping search on the Trimble handheld computer. Also, verify that the Trimble handheld’s
Bluetooth is turned on. If this does not solve the problem then power down Envision® unit,
close the Elkins Gas Analyzer software on the Trimble and retry to reconnect to the Trimble
handheld computer. If this does not correct the problem call technical support at Elkins
Earthworks® 330-725-7766.
2) “The Bluetooth connection to the meter has been lost”