Campbell Scientific ASPTC Aspirated Thermocouple - Manual (Page 12)

Model ASPTC Aspirated Shield with Fine Wire Thermocouple
8
EXAMPLE 4. Sample CR10(X) Instructions for Measuring Temperature
Gradient with the ASPTC
1: Temp (107) (P11)*
1: 1
Reps
2: 1 SE Channel
3: 3 Excite all reps w/E3
4: 1** Loc [ CR10TCR_C ]
5: 1 Mult
6: 0 Offset
2: Thermocouple Temp (SE) (P13)
1: 1
Reps
2: 21† ± 2.5 mV 60 Hz Rejection Range
3: 12*** SE Channel
4: 2 Type E (Chromel-Constantan)
5: 1** Ref Temp Loc [ CR10TCR_C ]
6: 2** Loc [ ASP_LWR ]
7: 1 Mult
8: 0 Offset
CAUTION: The CR10TCR reference temperature must be in degrees Celsius when used in
Instruction 14.
3: Thermocouple Temp (DIFF) (P14)
1: 1
Reps
2: 21† ± 2.5 mV 60 Hz Rejection Range
3: 6*** DIFF Channel
4: 2 Type E (Chromel-Constantan)
5: 2** Ref Temp Loc [ ASP_LWR ]
6: 3** Loc [ ASP_UPR ]
7: 1‡ Mult
8: 0‡ Offset
4: Z=X-Y (P35)
1: 2**
X Loc [ ASP_LWR ]
2: 3** Y Loc [ ASP_UPR ]
3: 4** Z Loc [ del_ASP ]
* Instruction 17 is used to find the
panel temperature on a 21X.
** Proper entries will vary depending on the program.
*** Single ended input channel 8 and
differential input channel 4 on the 21X.
† On the 21X the 5 mV slow input range is used.
‡ For degrees Fahrenheit use a Mult of 1.8 and Offset of 32.
4. Maintenance
Keep the intake and thermocouple free from debris. Debris can be blown away
with a can of compressed air. Tweezers may also be used to pick the debris
from the thermocouple. Be careful not to damage the junction.