Teledyne OT-3 User Manual download pdf (Page 37)

Trace Oxygen Analyzer Operation

Teledyne Analytical Instruments 29

Note: If the analyzer output goes above the high alarm setpoint

or below the low alarm setpoint, the display will go blank

and the front panel ALARM Indicator, beneath the SET

Function buttons, will blink. Hold down the SPAN button

until the ALARM Indicator stops blinking.

To set the span:

1. Press the SPAN button once.

2. Within 5 seconds press either the ∆ or ∇ button until the display

is stable and matches the known span gas concentration.

The unit is now calibrated.

4.9 Displaying Percent & PPM on the LED Display

The analyzer displays the concentration in percent whenever the

reading is over 9999 ppm. When the reading changes to percent, the

LED display will flash the oxygen concentration on and off. On the

other hand, if the instrument is displaying ppm, only the concentration

reading will be shown.

4.10 Supplementary Information

If, during the Span Procedure, you pressed the SPAN button by

mistake, you must wait five minutes for the analyzer to resume analysis

or you can press the UP button and then the DOWN button. (Pressing

the UP and DOWN buttons causes the analyzer to time-out in five

seconds instead of five minutes).

If during the span procedure, you press the RANGE or ALARM

buttons:

- either the range or alarm routine will be activated.

- any changes to span will be rejected.

- the 60 second alarm delay will not occur, i.e., the alarms will

be responsive immediately.

CAUTION: TET/AI CONSIDERS THE ACTION OF PRESSING THE

ALARM OR RANGE BUTTONS TO BE AT YOUR

(THE USER’S) DISCRETION.

BE AWARE THAT THE ALARMS WILL BECOME

ACTIVE WITHIN 5 (FIVE) SECONDS IF THE RANGE

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 49 50

No comments

Teledyne OT-3 User Manual Page 37