Teledyne 9060L, Percent Oxygen Analyzer operating instructions Alarm #2

Models: 9060L Percent Oxygen Analyzer

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Percent Oxygen Analyzer

Installation

 

 

 

The alarm relay circuits are designed for failsafe operation, meaning the relays are energized during normal operation. If power fails the relays de-energize (alarms activated).

The contact connections are indicated diagrammatically on the rear panel as Normally Closed, Common, and Normally Open. Figure 3-3 explains how these act in failsafe operation.

Alarm 1 and Alarm 2 are configured as HI and LO respectively. A HI alarm will activate when concentration is above threshold, while a LO alarm will activate when concentration is below threshold.

Figure 3-3: Contact ID for FAILSAFE Relay Operation

The specific descriptions for each type of alarm are as follows:

Alarm #1

Programmable as high alarm. Can be set anywhere

 

between 0 and 100 % but no lower than Alarm #2.

Alarm #2

Programmable as low alarm. Can be set anywhere

 

from 0 to 100 % but no higher than Alarm #1.

Sensor Fail

Actuates when the output of the sensor falls below a

 

factory programmed acceptable level or the

 

thermocouple is open.

CAUTION:

THERE COULD BE HAZARDOUS VOLTAGE AT THE

 

ALARMS TERMINALS, EVEN WHEN POWER IS

 

REMOVED FROM THE INSTRUMENT.

Teledyne Analytical Instruments

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Page 27
Image 27
Teledyne 9060L, Percent Oxygen Analyzer operating instructions Alarm #2