Operating The Oxygen Transmitter - Teledyne 300P Operating Instructions Manual

Percent Oxygen Transmitter
7. Set switch SW-1 to position "B" (AIR CAL) and flow air
8. After the reading was stabilized, set P1 to read a stable
9. Return switch SW-1 to the operating position "A".
3.2.3 Setting the Span Potentiometer (P1) using SPAN GAS
8. Set switch SW-1 to the normal operating position "A". Flow a
9. Adjust span potentiometer P1 to read an output current
10. Remove meter and reconnect incoming wire to Terminal 2.
3.3
1. After calibrating the instrument, reconnect the sample in line if it
2. Open the transmitter door and set switch SW-1 back to position
CAUTION: The 0–25% oxygen analysis range can be used to accurately
3.2.2 Setting the Span Potentiometer (P1) using AIR
through the system. This can be done by either disconnecting the
sample line and allowing air to flow or inserting a tee with
appropriate valves to allow switching between sample and air
without having to disconnect the sample in line.
20.00 +/- 0.01 mA output.
span gas through the system and allow time for stabilization.
NOTE: The span gas should have an O
100% of full scale. For example, if you have a 0-10%
transmitter, the span gas should be a certified grade gas of about
9% O in N or Argon.
2 2
determined by the following equation:
Span Gas Concentration in %
Full Scale Concentration in %
Replace junction box cover and close transmitter box door.
Operating the OxygenTransmetter
was disconnected.
"A" if this has not already been done.
measure the oxygen concentration in a gas mixture containing up
to 24% Oxygen. Oxygen concentrations above 24% under extreme
conditions can cause the instrument to produce unreliable read-
ings on the 0–25% oxygen scale. Use this range for gas mixtures
containing 0–24% oxygen only.
Teledyne Analytical Instruments
Operation 3
concentration of 80% -
2
4 mA = Output in mA
3-3