Teledyne 402REU - Hydrocarbon analyzer - Manual (Page 26)

Chapter 4 Model 402 R-EU
Teledyne Analytical Instruments 4-2
4. Span Gas: A cylinder containing a composition consisting of
the parent gas and a specified (see Appendix: Specifications)
amount of methane will be required to standardize the
sensitivity setting of the analyzer. The cylinder is to be
equipped with an oil-free, dual stage metallic diaphragm
regulator.
5. Sample Pressure Regulation: An oil-free, metallic
diaphragm regulator must be installed at the sample point when
possible; see Section 4-9: Sampling.
4.2 Preliminary Power-Off Check List
Make the following checks of the installation before proceeding
further into the start-up procedure:
1. Check to see that the sample and supporting gas installation is
in accordance with the specifications called for in the
installation and application sections of the manual. Be sure that
the supporting gases are of the proper composition and are
connected to the correct fittings at the rear of the analyzer.
2. Check to see that the electrical connections conform to the
instructions contained in the installation section and on the
input-output diagram.
NOTE: Ensure that the Terminal Block Coverplate is securely in place to
maintain RFI/EMI protection.
3. The digital meter requires no adjustments. If you feel that your
digital readout needs adjustment and you are not familiar with
the procedures required, consult TET/AI before making any
adjustments.
4. Open the door and check to see that the printed circuit boards
and cables are firmly seated in their respective sockets.
NOTE: The boards and cable plugs are keyed so that they cannot be
inserted incorrectly in either the wrong position or the wrong
connector.
5. Confirm that recorder and alarm connections are properly
made.