Teledyne 3010MA – Paramagnetic oxygen analyzer, no 0-100% range – (superceded) - Manual (Page 55)

Paramagnetic O2 Purity Analyzer Operation
Teledyne Analytical Instruments 55
To reset a latched alarm, go to Dft– and then press either
∆
two times
or
∇
two times. (Toggle it to Y and then back to N.)
–or –
Go to Ltch– and then press either
∆
two times or
∇
two times.
(Toggle it to N and back to Y.)
4.6 The Range Function
The Range function allows the operator to program up to three
concentration ranges to correlate with the DC analog outputs. If no custom
ranges are defined by the user, the instrument defaults to:
Low = 95–100 %
Med = 96–100 %
High = 98–100 %.
The Model 3010MA is set at the factory to default to autoranging. In
this mode, the microprocessor automatically responds to concentration
changes by switching ranges for optimum readout sensitivity. If the
current range limits are exceeded, the instrument will automatically shift
to the next higher range. If the concentration falls slightly below full scale
of the next lower range, the instrument will switch to that range. A
corresponding shift in the DC percent-of-range output, and in the range ID
outputs, will be noticed.
The autoranging feature can be overridden so that analog output stays
on a fixed range regardless of the oxygen concentration detected.
NOTE: If the concentration exceeds the upper limit of the range, the DC
output will saturate at 1 V dc.
However, the digital readout and the RS-232 output of the
concentration are unaffected by the fixed range. They continue to read
accurately with full precision. See Front Panel description in Chapter 1.
4.6.1 Setting the Analog Output Ranges
To set the ranges, enter the range function mode by pressing the
Range button on the front panel.
L—95.00 M—96.00
H—98.00 Mode—AUTO
Use the < > arrow keys to blink the range to be set: low ( L), medium
(M), or high (H).