7-12 | Dycor CG1100 Oxygen Analyzer
Mass Flow Meter
Removing the mass flow meter
1. Loosen the inside and outside tubing nuts to separate the flow meter
from the tubing. See Figure 7-11.
2. Loosen the nut on the outside cover located under the 3-way valve.
3. Gently remove the flow meter from the assembly and unscrew the
connectors and save. Identify the connectors so that you will know
which end of the flow meter they screw into. You will use them with
your replacement flow meter.
4. Detach the ribbon cable connected to the analog board at position J4.
Pressure Transducer
Mass Flow Meter
VSO Valve
O Rings
Manifold
Nut
Figure 7-11. Mass flow meter.
Replacing the mass flow meter
1. Screw in the connectors from the old flow meter to the new flow meter.
2. Attach the ribbon cable to the flow meter and connect to the analog
board at position J4 (See Figure 7-9).
3. Insert the bulkhead connector through the hole below the 3-way
valve. Install the nut and tighten.
4. Attach the flow meter to the tubing at the back inside cover below the
3-way valve. Make sure that the FLOW arrow is pointing in the direc-
tion of the flow. See Figure 7-12.
