M300EU OPERATING INSTRUCTIONS | M300EU |
| Addendum to M300E/EM Manual P/N 04288 |
6.3.6.SETUP Æ RNGE Æ UNIT: SETTING THE REPORTING RANGE UNIT TYPE
The M300EU can display concentrations in ppb, ppm, ug/m3, mg/m3 units. Changing units affects all of the COM port values, and all of the display values for all reporting ranges. To change the units of measure press:
SAMPLE | RANGE=50.000 PPM | CO= XXXX | ||
<TST TST> | CAL | SETUP | ||
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Toggled these keys to
select the units of measure for the reporting ranges
| SETUP X.X PRIMARY SETUP MENU |
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| CFG DAS | RNGE PASS |
| CLK MORE | EXIT |
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SETUP X.X RANGE MODE MENU |
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| MODE SET | UNIT |
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| EXIT |
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SETUP X.X | CONC UNITS:PPB |
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| PPB PPM | UGM MGM |
| ENTR EXIT |
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EXIT discards the new
setting
ENTR accepts the new setting 
NOTE
Concentrations displayed in mg/m3 and ug/m3 use 0°C , 760 mmHg for Standard Temperature and
Pressure (STP).
Consult your local regulations for the STP used by your agency.
NOTE
Once the units of measurement have been changed, the unit MUST be recalibrated, as the “expected
span values” previously in effect will no longer be valid.
Simply entering new expected span values without running the entire calibration routine is not
sufficient.
The following equations give approximate conversions between volume/volume units and
weight/volume units:
CO ppb x 1.25 = CO ug/m3 CO ppm x 1.25= CO mg/m3
28 | 05831 Rev. 01 |
