Campbell PC208 Instruction Manual download pdf (Page 25)

The default time is 30 minutes

5.8.2. To fire a test heat-pulse

enter *6 A D 1 (the lights should go on, and the program will run)

enter *6 A D 6 for an early exit of program

enter *0 to continue

5.8.3. To check if the system is working properly (generally a good idea!)

fire a test heat pulse (see 5.8.2)

check the initial voltages (+/- 20 mV is OK, -9999 is stuffed)

i.e. enter *6 x A where x = 41..56

check the present voltages (+/- 100 mV is OK, -9999 is stuffed)

i.e. enter *6 x A where x = 21..36

enter *0 to continue

Note. Readings are in mV so anything in the range +/- 200 is OK.

5.8.4. To examine

data (stored in locations 1..16)

enter *6 x A where x is the location.

loc. 1 = tz1-1 (outer) .... loc. 4 = tz1-4 (inner)

loc. 5 = tz2-1 (outer) .... loc. 8 = tz2-4 (inner)

loc. 9 = tz3-1 (outer) .... loc.12 = tz3-4 (inner)

loc. 13 = tz4-1 (outer) .... loc.16 = tz4-4 (inner)

enter *0 to continue

5.8.5. To find out the total running-time since the heat-pulse was fired (loc. 99)

enter *6 99 A

enter *0 to continue

5.8.6. To change the duration of the heat pulse (alter Inst-48)

enter *1 48 A A A x A *0 where x is duration in s

default value is 2.0 s (this is also the maximum time)

5.8.7. To change the delay between firing a heat pulse and testing for a 'cross-over'. This

may be necessary for really fast flows (alter Inst-56)

enter *1 56 A A A x A *0 where x is delay in multiples of 0.1s

default value is 15 s, i.e. x=150

5.8.8. To change the maximum time for a

calculation (alter Inst-15)

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Campbell PC208 Instruction Manual Page 25