Teledyne 7500ZA operating instructions RS-485 9pins D-sub connector Half-duplex bit serial

Specifications Model 7500ZA

Correction formula:

C= 21− On × Cs 21− Os

C : Sample gas concentration after O2 correction.

Cs : Measured concentration of sample gas.

Os : Measured O2 concentration (Limit setting: 1 to 20% O2)

On : Reference O2 concentration (value changeable by setting 0 - 19% O2).

Average value after O2 correction and O2 average value calculation:

The result of O2 correction or instantaneous O2 value can be output as an average value over the preset period of time.

Moving average method is used. Sampling interval is 30 seconds (Output is updated every 30 seconds.

Update is the averaged value of the most recent elapsed averaging time period.) Averaging time period is settable from 1-59 minutes (in increments of 1 minute) or 1-4 hours (in increments of 1 hour).

Average Value Resetting:

The above-mentioned output of average value is started from the initial state by opening the average value resetting input terminals after short circuiting for 1.5 sec or longer.

Output is reset by input voltage and the terminal circuit.

Communication Function:

RS-485 (9pins D-sub connector)

Half-duplex bit serial

Teledyne Analytical Instruments 96