Teledyne 4040 - Methane / Nonmethane analyzer - Manual (Page 36)

Installation Series 4040
36 Teledyne Analytical Instruments
CAUTION: UNDER NO CIRCUMSTANCES SHOULD YOU
EMPLOY A REGULATOR THAT IS NOT EQUIPPED
WITH A METALLIC DIAPHRAGM ANYWHERE IN THE
SYSTEM.
The regulators should be inspected prior to installation to be sure
that they are oil-free. Failure to comply with these directives will result
in a constant drift in analyzer output, as organic compounds will outgas
into the plumbing system at a rate that is related to the ambient
temperature. Use 316 stainless steel, dual-stage stainless steel diaphragm
regulators only in fuel, sample, and blanket air lines; shutoff valves
should be used downstream from each regulator.
Place the supply cylinders as close to the analyzer as possible, and
interconnect them to the analyzer with new tubing. Be sure that all
plumbing connections are free of leaks.
Note: Use only stainless steel tubing throughout the system.
Consult the assembly, piping, outline drawings, and
any Addenda included with this manual to determine if
special conditions apply.
CAUTION
: THE GASES USED MUST BE OF THE
HIGHEST QUALITY, ULTRA ZERO GRADES,
AS SHOWN BELOW. FAILURE TO DO SO
WILL RESULT IN CONTAMINATION AND
FAILURE TO DETECT LOW PPB BENZENE:
AIR: USE WATER PUMPED AIR WITH THC LESS
THAN 0.1 PPM. DO NOT USE OIL PUMPED AIR
UNDER ANY CIRCUMSTANCES.
FUEL: HYDROGEN GAS, 100%, ZERO QUALITY WITH
THC LESS THAN 0.5 PPM.
CARRIER GAS: NITROGEN GAS, ULTRA ZERO
GRADE WITH THC LESS THAN 0.05 PPM.