Hi Range; Lo Range; Settle Mode; Setting The Alarm Setpoints - Teledyne 3190 Operating Instructions Manual

Trace Oxygen Analyzer
Note: The HI Range setpoint MUST be set at a higher
concentration than the LO Range setpoint.

4.3.1 HI Range

Setting the HI Range full scale value defines the LEAST sensitive
analysis range to be used. To set the HI Range:
1. Press the SET HI RANGE function button once.
2. Immediately (within 5 seconds) press either the Δ or ∇ button
to raise or lower the displayed value, as required, until the
display reads the desired full scale concentration.

4.3.2 LO Range

Setting the LO Range full scale value defines the MOST sensitive
range to be used. To set the LO Range:
1. Press the SET LO RANGE function button once.
2. Immediately (within 5 seconds) press either the Δ or ∇ button
to raise or lower the displayed value, as required, until the
display reads the desired full scale concentration.

4.3.3 Settle Mode

The Model 3190 has two programmable ranges as discussed
previous. Occasionally, to maximize accuracy the microprocessor must
make certain adjustments to the gain of the amplifier which converts the
sensor current into a voltage. When these adjustments are being made,
the outputs of the analyzer are frozen and the LED will flash "SetL".
This condition will persist for approximately 35 seconds and then
normal operation will resume.

4.4 Setting the Alarm Setpoints

The alarm setpoints can be adjusted over the full range of the
analyzer (0-9999 ppm oxygen content). The setpoint values are
expressed in ppm only.
Note: The HI Alarm setpoint MUST be set at a higher
concentration than the LO Alarm setpoint.
Teledyne Analytical Instruments
Operation
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