Calibrating The D.o. Probe With A Flow Meter; D.o. Parameter Module; D.o. Probe Specifications - Teledyne 4220 Installation And Operation Manual

4220 Flow Meter
Section 5 Options and Accessories
Cathode
Anode
Membrane
Electrolyte
Temp. Range
Polarizing Voltage
Probe Current in Air at 30° C
Probe Current in Nitrogen at 30° C
Connection
Response Time
Figure 5-6 D.O. Parameter Module
5.10.6 Calibrating the D.O.
Probe with a Flow
Meter
5-22
probe. Use only 2-mil membranes with D.O. probes
connected to Isco flow meters.
Table 5-4 D.O. Probe Specifications
Gold
Silver
FEP Teflon; 2 mil standard
Half-saturated KCl (Potassium Chloride)
0° to +45° C
0.8 Volts (Nominal)
19 microamps (nominal)
0.15 microamps or less
12 ft. (3.2 m) cable with 5-pin male M/S connec-
tor
Typical response for dissolved oxygen, using
supplied membranes, is 90% in 20 seconds.
Response at low dissolved oxygen levels is typ-
ically 90% in 60 seconds.
You must use the Isco 270 D.O. Module box between the probe
and flow meter; this extends the distance between the probe and
the flow meter to 1,000 feet.
Prepare the probe as described above if this has not already been
done (fill the probe cavity with electrolyte and seat the mem-
brane).