CS510 OxyGuard Dissolved Oxygen Probe

Optional Repeat Cycle Timer for Agitators: Reciprocating action may be controlled by the optional solid state Repeat Cycle Timer. It sends 12 VDC pulses to the agitator coil. The ON-time is 0.25 sec. The OFF-time is adjustable from 3 to 12 sec.; requires supply voltage 10 to 17 VDC; housed in watertight cylinder 6.6" x 2" diameter (170 mm X 50 mm).

6. Application Information

NOTE Short Cut users: This application note was written primarily for those whose needs are not met by Short Cut. Your procedure is much simpler: just add the OxyGuard probe (it’s in the water quality sensor group), save your program, and follow the wiring shown in Step 4 of Short Cut.

7. Wiring

The OxyGuard probe uses one differential channel. Differential wiring is better at rejecting electrical noise and ground loop error.

Red -----------------

1H

Blue-----------------

1L

8. Programming

Instruction 2, differential millivolt measurement is required for the OxyGuard probe. The example measurement instructions that follow do not store data to final storage. Additional instructions (Typically P92, P77 and output processing instructions such as P70) are required to store data permanently.

*1 Table 1

 

 

 

01:

15

Sec. Execution Interval

01: Volt (Diff) (P2)

 

 

01:

1

Rep

 

02:

24

250 mV

 

03:

1

Diff Chan

 

04:

1

Loc: [DO

]

05:

1

Mult.

*See calibration*

06:

0

Offset

 

9. Calibration

The multiplier is used to calibrate the OxyGuard probe. To calculate the multiplier:

1)Program the CR10(X) using a multiplier of one.

2)Place the OxyGuard probe in the air, shaded from the sun. Wait for readings to stabilize. This may take 15 minutes or more.

5