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TELEDYNE INSTRUMENTS
460L Instruction Manual Operating Instructions
05228 Rev B 25
DCN 5164 PRINTED DOCUMENTS ARE UNCONTROLLED
6. OPERATING INSTRUCTIONS
The 460L has been designed for simple and trouble-free operation. The sections below detail the
operational features of the 460L.
6.1. Front Panel Display
6.1.1. O
3
readout
The current ozone concentration is displayed in the 4-digit readout in the center of the display.
The concentration is displayed in the currently selected units either: wt%, g/Nm3 or ppm, ppb.
6.1.2. Zero Point Calibration
The 460L needs little or no calibration in the field; however sometimes minor measurement
offsets can occur. To compensate for this a zero point calibration can be initiated by using the
two ZERO buttons. See Section 8.1 for more information.
6.1.3. Status LED’s
The four status LED’s to the right of the display indicate the general status of the 460L Monitor.
During normal operation, after the monitor has warmed up, the green ‘Sensor OK’ LED should be
on and all other Status LED’s should be off. For information on troubleshooting using the Status
LED’s, see Sections 11.2.4.
Table 6-1 Status LED’s
NAME ON STATE OFF STATE
SENSOR O.K. Normal State is STEADY GLOW
OFF when
Reference or Measure > 4995mV;
Reference < 1000mV
INVALID
READING
STEADY GLOW if:
Ozone Pressure > 14.9 psia,
Negative Ozone Concentration,
Concentration Over-Range
Normal State
LAMP LOW
STEADY GLOW if Reference
Detector<2500mV
Normal State
ALARM
ACTIVE
BLINKS whenever the measured O
3
concentration exceeds either the alarm
limits.
Normal State
Definitions for these four LED’s correspond to the definitions of the monitor’s four digital status
outputs with identical names. See Sections 11.2 and 11.3 for more detailed information.