Alarm Function - Teledyne TEXIO PTE6-200 Operating Instructions Manual

Percent Oxygen Analyzer

4.7 Alarm Function

The Model 3000RS-P is equipped with 2 fully adjustable
concentration alarms and a system failure alarm. Each alarm has a relay
with a set of form "C" contacts rated for 1amp resistive load at 250
VAC. See Figure in Chapter 3, Installation and/or the Interconnection
Diagram included at the back of this manual for relay connections.
The system failure alarm has a fixed configuration described in
Chapter 3 Installation.
The concentration alarms can be configured from the display as
either high or low alarms by the operator. The alarm modes can be set as
latching or non-latching, and either failsafe or non-failsafe, or, they can
be defeated altogether. The setpoints for the alarms are also established
using this function.
Decide how your alarms should be configured. The choice will
depend upon your process. Consider the following four points:
1. Which if any of the alarms are to be high alarms and which if
any are to be low alarms?
Setting an alarm as HIGH triggers the alarm when the
oxygen concentration rises above the setpoint. Setting an
alarm as LOW triggers the alarm when the oxygen
concentration falls below the setpoint.
Decide whether you want the alarms to be set as:
• Both high (high and high-high) alarms, or
• One high and one low alarm, or
• Both low (low and low-low) alarms.
Teledyne Analytical Instruments
Operation
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