INFICON 2020ppbPRO Portable Photoionization Detector - Manual (Page 77)

ISP-074-576-P1D 71
DC Power Cord
The 2020ppbPRO can be connected to a car battery through the cigarette lighter
with the DC power cord. While the 2020ppbPRO is connected to the car battery, the
2020ppbPRO battery is being charged.
NOTE: The 2020ppbPRO is not classified for use in hazardous locations with a DC power
cord.
To connect the 2020ppbPRO to a DC power supply:
1. Turn the instrument off by pressing the ON/OFF key for five seconds.
2. Connect the DC power cord (Part No.MX350004) to the 2020ppbPRO
AC adapter jack on the rear of the instrument.
3. Connect the other end of the DC power cord to the cigarette lighter in
the car.
4. Turn the instrument on again by pressing the ON/OFF key.
If the vehicle is running, ensure the engine exhaust does not contaminate your
samples.
Belt Clip Holster
Use the belt clip holster (Part No. MX750011) to protect the instrument and to mount
the instrument to a belt.
11.7 eV UV Lamp
General Information
The 2020ppbPRO is equipped with the standard 10.6 eV high performance UV
lamp. An optional 11.7 eV UV lamp (Part No. MX390024) is available for special
applications.
Install this lamp as outlined in Removing and Replacing the UV Lamp on page 77.
When you install a UV lamp other than the 10.6 eV high performance UV lamp, all
the response factors become invalid. You must set the response factor for the
current cal memory to 1. Contact INFICON
’s Applications Department for further
information.
Limitations of Lithium Fluoride Lamp Window
This lamp is intended for special applications only. It is not suitable for normal
operation, due to limitations of the lamp window material.
The 11.7 eV lamp window material is lithium fluoride (LiF). LiF is composed of two
light elements which are easily disrupted within the crystal lattice by the UV light
generated by the lamp. This process is called solarization and it is evidenced by the
crystal gradually becoming opaque. Lamp performance declines as this happens.