Teledyne 7120 - NDIR analyzer - Manual (Page 79)

A-3
Photometric Analyzer Appendix
Teledyne Analytical Instruments
Calibration offset capability for Auto Zero correction
·
Dial-in offset manually to tune Cal gas to reference method
Example: Assay Cal Zero gas=99.99%; Zahm Nagel reference method=
99.88%; offset correction = +0.11% CO2
Accuracy on purity for CO2 98-100% range
·
± 3% of full scale or ± 0.06% CO2
All other ranges for purity and non-purity applications
·
± 2% of full scale span
Repeatability · ± 1% of full scale
Resolution
· 0.01 % to 0.1 depending upon full scale range used.
Linearity · < ±1% of full scale
Response Time · T90 of < 30 seconds
· • Operating Temperature 5 °°°°° to 40 ° ° ° ° ° C (non-condensing)
• inlet sample gas pressure 2-3 psig, minimum, but controlled accurately
• Cell pressure to be at 0 psig; vented to a very stable atmospheric pressure.
Auto-span required with auto-zero if atmospheric pressure varys over
time slowly.
• Cell calibration/process pressures up to 50 psig may be possible; vented to
a very stable return pressure ( <
±±±±±
1% FS = <
±±±±± 0.07 psi; ±±±±± 0.005BAR)
• Connection, Inlet/Outlet Sample Gas 1/4” tubing inlet/outlet fittings
•
Flow Rates:
Sample Gas >0.4 and <2 SCFH recommended (~ 200 to 1000 ccm)
Reference Gas >0.04 and <0.2 SCFH recommended (>20 and <100 ccm)
Mounting 19” Panel/Rack mount
Envelope Dimensions 19.0”W X 15.25”D X 8.75”H
(482.6mmW X 387.45mmD X 222.25mmH)
Enclosure Rating General Purpose
AREA CLASSIFICATIONS Characteristics
••••• General Purpose Panel mount
••••• Class I, Division II, B, C, D Analyzer may be Z-purged without
temperature control in some applica-
tions. (Accuracy may be sacrificed,
contact factory)