Operator's Manual

15 | P a g e
© ExSens TECHNOLOGY (PTY) LTD2017
The following colors on Graph screen re-present the different gas types:
Blue Oxygen
Yellow Toxic 1
Cyan Toxic 2
Red Flammable
Exit any menu by pressing the UP and DWN keys at the same time. All menu’s when entered will
timeout automatically once no key press is registered. The only exception is the Graph menu where the
user must exit.
1.5 MeasureMesh Operation
MeasureMesh is a wireless networking protocol used to send sensor related information between
wirelessly connected instruments. A prerequisite to use this functionality is that one instrument must be
configured as a master and one as a slave. This configuration can be performed at the manufacturing
facility or an accredited repair center. The link is setup automatically between a master and slave
instrument when the MeasureMesh icon is selected from the menu on both instruments. The link
will be active until one and/or both instruments are placed back on charge or the link is deactivated by
selecting the MeasureMesh icon again on one or both instruments. All transmission will cease
immediately when the link is deactivated via the MeasureMesh icon. While the link is active, the slave
instrument will only transmit when it receives a request from a master instrument. The master
instrument will send a request to the slave instrument at 1 second intervals while the link is active. The
range of the link is dependent on the physical area. The tested range is in excess of 10 meters. The
icon must be displayed in the bottom right corner of the LCDs of both instruments to indicate that the
link is active. Pressing the UP and ENT keys will select the remote reading screen. The screen
background will change to cyan and will then be displaying the readings of the linked or remote
instrument. The screen background will revert back to normal white after a 20 second timeout. Remote
reading mode can be selected as many times as required as long as the link is active.
MeasureMesh Application Synopsis 1: 20-minute gas check on continuous miner
Two instruments can be linked as per the above procedure. One instrument can be fitted to the boom
of the continuous miner with a special mounting bracket (sold separately, please consult with your
accredited distribution agent). The second instrument can be worn on the belt of the machine operator
in a leather carry pouch (sold separately, please consult with your accredited distribution agent). The
machine operator can hold the belt worn unit in his hand and enter remote viewing mode every 20
minutes.
This feature can also be enabled with the configuration software to indicate to the user that the 20
minute gas check needs to be done. This will enable him to view the methane reading of the
instrument mounted on the boom of the continuous miner. This will increase production, since the
machine will not have to be stopped and backed up to do the 20-minute gas check.
If the 20 minute warning timer is enabled and the user acknowledges the timeout the readings of the
20 minute gas check will be saved to the SD Card as an event record.
MeasureMesh Application Synopsis 2: Manhole/confined space entry