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S
UPPLEMENTAL
Innova Land Surveyor (LS)
The Innova LS consists of two different models (PPM/% LEL/% GAS and
PPM/%LOW/%HI) that permits measurements of methane gas in three
ranges of sensitivity:
Table C-1
Ranges for Innova LS
PPM/%LEL/%GAS
0-10,000 PPM
0-10,000 PPM
0-100% LEL
0-5.0% Gas by VOL [%LOW], equivalent to 0-100% LEL
0-100% GAS by VOL* 0-100% Gas by VOL [%HI]*
* By means of Thermal Conductivity Sensor
Operation
For the PPM/%LOW/%HI, see the text in brackets [ ].
Operation in the first two ranges is exactly as described in the text of this
manual, except that if the PPM reading should exceed its range (10,000
PPM) the range will automatically switch to the % LEL [%LOW] range. If
the % LEL [%LOW] reading should exceed 100% LEL, equivalent to 5%
methane, the Innova LS will automatically switch to the 0-100% GAS range
[%HI] range. The display will show the legend "% GAS" ["%HI"] following
the gas reading while in this range.
The % GAS [%HI] range may also be entered manually from the % LEL
[%LO] range by pressing the RANGE button twice. If it is likely that high
concentrations will be encountered, to prolong the life of the LEL/PPM
sensor, start out in the % GAS [%HI] range. The Innova LS does not
automatically range down. To exit the % GAS [%HI] range and return to the
LEL [%LOW] range press the RANGE button twice. There is a 30 second
warm-up period after the transition, during this period the display count from
W 30 to W 1 before gas readings are displayed. To manually switch between
the ppm and % LEL (%LO) ranges, press the RANGE button once.
71-6417
Appendix
C
I
NSTRUCTIONS
PPM/%LOW/%HI
61
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