Teledyne 6020 - Photometric analyzer - Manual (Page 40)

3 Operation Model 6020
3-16 Part I
Teledyne Analytical Instruments
1. ZERO: Sets the Filter and solenoid in the zero mode (span filter off,
zero solenoid on).
2. SPN1: Sets the Filter and solenoid in the span mode (span filter on,
zero solenoid on).
3. SPN2: Sets second span filter on (usually not installed) and zero
solenoid on
4. SPNB: Sets both span filter on (usually only one filter installed) and
zero solenoid on.
5. ANLZ: Returns Filters and solenoid to the Analyze mode (span filter
off, zero solenoid off).
-Press Escape to see the effect
NOTE: FOR PROPER OPERATION OF THE ANALYZER
RETURN TO ANLZ MODE.
3.4 The Zero and Span Functions
The Model 6020 can have as many as three analysis ranges plus a special
calibration range (Cal Range). Calibrating any one of the ranges will automatical-
ly calibrate the other ranges.
CAUTION: Always allow one hour warm-up time before calibrat-
ing, if your analyzer has been disconnected from its
power source. This does not apply if the analyzer
was plugged in but was in STANDBY.
The analyzer is calibrated using zero, and span gases.
Note: Shut off the gas pressure before connecting it to the analyzer,
and be sure to limit pressure to 40 psig or less when turning it
back on.
Readjust the gas pressure into the analyzer until the flowrate through the
Sample Cell settles between 50 to 500 cc/min (approximately 0.1 to 0.4
SCFH).
Note: Always keep the calibration gas flow as close to the flowrate of
the sample gas as possible