Teledyne 335 - Analog control room monitor for personnel safety - Manual (Page 16)

TELEDYNE ANALYTICAL INSTRUMENTS
3 Installation and Operation Model 335
3-4
placed. The oxygen level is displayed on the analog meter. The response
time of the instrument will depend on the actual Micro-Fuel Cell (MFC)
installed. With the class B-3 MFC installed, the response time is less than 15
seconds at 25°C. The table below indicates the response time for some
MFCs typically used in the Model 335.
Class Response Warranty Application
Time (Sec) (Months)
B-3 13 12 Intermediate response/long life
B-5 13 18 Long life/general O
2
monitoring
C-3 30 12 General purpose/long life
3.5 Cell Warranty
The Class B-3 cell used in the Model 335 is warranted for 12 months of
service. Under normal operating conditions the Class B-3 cell should last 12
months in air. For special applications, optional cells are available.
Customers having warranty claims must return the cell in question to
the factory evaluation after obtaining an RMA number. If it is determined
that failure is due to faulty workmanship or materials, the cell will be re-
placed free of charge. If a cell was working satisfactorily, but fails short of
its warranty period, the customer will receive credit, on a prorated basis,
toward the purchase of a new cell.
Evidence of mishandling will render the cell warranty null and
void.
3.6 Safety Checklist
The following checklist is offered only as a guide to assist the user in
verifying a number of important factors; it is by no means a complete list of
safety-related items. The procedures and precautions relating to the use of
the instrument in the user’s process must be developed by the user. It is vital
that the operator understand and test the operation of the total system.
Verify that:
1. Instrument power is active and adequate.
NOTE: