Teledyne 200AH 用户手册

 

The flow/pressure sensor board consists of 2 pressure sensors and a flow sensor. See Figure 9-8 
for a diagram of this board. From these three sensors four values are computed and displayed on 
the front panel TEST functions. They are: 

1.  Ozone Flow - measured directly - S3, R3 

2.  Reaction Cell Pressure - measured directly - S2, R2 

3.  Sample Gas Pressure - measured directly S1, R1 

4.  Sample Flow - computed from sample pressure and reaction cell pressure S1, S2 

The above pressures and flows are filtered to produce the front panel readings. There is a small 
delay after adjustment for a steady reading when observing the TEST functions. 

The flow/pressure sensor board consists of 2 pressure sensors and a flow sensor. See Figure 9-8 
for a diagram of this board. From these three sensors four values are computed and displayed on 
the front panel TEST functions. They are: 

1.  Ozone Flow - measured directly - S3, R3 

2.  Reaction Cell Pressure - measured directly - S2, R2 

3.  Sample Gas Pressure - measured directly S1, R1 

4.  Sample Flow - computed from sample pressure and reaction cell pressure S1, S2 

The above pressures and flows are filtered to produce the front panel readings. There is a small 
delay after adjustment for a steady reading when observing the TEST functions. 

To adjust the OZONE flow: 

1.  Go to DIAG mode by pressing SETUP-MORE-DIAG, then select SIGNAL I/O, and press 

ENTR. Select OZONE_FLOW by using NEXT-PREV keys. 

2.  Adjust R3 so that OZONE_FLOW reads 2000 mV. This is the coarse adjustment. 

3.  Press EXIT to return to the SAMPLE mode. Select the OZONE FL - TEST function. Plumb 

a calibrated flow measuring device upstream of the ozone generator (see Figure 9-7). Use the 
external device reading to make small adjustments in R3 to dial in correct flow readout on 
the front panel.