8
Warnings
1.
The PhD Ultra personal, portable gas detector has been designed for the detection
of dangerous atmospheric conditions. An alarm condition indicates the presence of a potentially
life-threatening hazard and should be taken very seriously.
2.
In the event of an alarm condition it is important to follow established procedures.
The safest course of action is to immediately leave the affected area, and to return only after further
testing determines that the area is once again safe for entry. Failure to immediately leave the area
may result in serious injury or death.
3.
Use only Duracell MN1500 or Ultra MX1500, Eveready Energizer E91-LR6, or
Eveready EN91 size AA 1.5V Alkaline batteries in the PhD Ultra Alkaline Battery Pack. Substitution of
batteries may impair intrinsic safety.
4.
The accuracy of the PhD Ultra should be checked periodically with known
concentration calibration gas. Failure to check accuracy can lead to inaccurate and potentially
dangerous readings.
5.
The accuracy of the PhD Ultra should be checked immediately following any
known exposure to contaminants by testing with known concentration test gas before further use.
Failure to check accuracy can lead to inaccurate and potentially dangerous readings.
6.
A sensor that cannot be calibrated or is found to be out of tolerance should be
replaced immediately. An instrument that fails calibration may not be used until testing with known
concentration test gas determines that accuracy has been restored, and the instrument is once again
fit for use.
7.
Do not reset the calibration gas concentration unless you are using a calibration
gas concentration that differs from the one that is normally supplied by Biosystems for use in
calibrating the PhD Ultra.
Customers are strongly urged to use only Biosystems calibration materials when calibrating the PhD
Ultra. Use of non-standard calibration gas and/or calibration kit components can lead to
dangerously inaccurate readings and may void the standard Biosystems warranty.
8.
Use of non-standard calibration gas and/or calibration kit components when
calibrating the PhD Ultra can lead to inaccurate and potentially dangerous readings and may void the
standard Biosystems warranty.
Biosystems offers calibration kits and long-lasting cylinders of test gas specifically developed for
easy PhD Ultra calibration. Customers are strongly urged to use only Biosystems calibration
materials when calibrating the PhD Ultra.
9.
Substitution of components may impair intrinsic safety.
10.
For safety reasons this equipment must be operated and serviced by qualified
personnel only. Read and understand this reference manual before operating or servicing the PhD
Ultra.
11.
A rapid up-scale reading followed by a declining or erratic reading may indicate a
hazardous combustible gas concentration that exceeds the PhD Ultra’s zero to 100 percent LEL
detection range.
