Teledyne Analytical Instruments 3020 M, Operating Instructions Manual

Page: 57 / 107

Installation Model 3020M-ATEX
Teledyne Analytical Instruments 34
obtainable voltage, depending on the load impedance applied. See
Figure 3-10.
Figure 3-10: FET Series Resistance
3.4 Gas Connections
Restrictors are located in the flame arrestors on all input lines and
in the auto-cal assembly if equipped.
The standard restrictor will limit the maximum sample flowrate to
approximately 500 sccm at 20 psig. Other restrictors are available to
meet customer requirements. Contact Teledyne Customer Service for
additional information.
.WARNING: OPERATING THE UNIT WITHOUT RESTRICTORS
WOULD CREATE AN UNSAFE OPERATING
CONDITION AND IS PROHIBITED.
The unit is manufactured with 6mm tube fittings, and 1/4” fittings are
available as an option. For a safe connection:
1. Insert the tube into the tube fitting, and finger-tighten the nut
until the tubing cannot be rotated freely, by hand, in the
fitting. (This may require an additional 1/8 turn beyond
finger-tight.)
2. Hold the fitting body steady with a backup wrench, and with
another wrench rotate the nut another 1-1/4 turns.