Hi,

We have DT80G datataker. We are trying to measure the temperature of the concrete using thermocouple. We able to get temperature reading which thermocouples directly connect with DT80G datataker but which are connect in CEM20 giving error reading (eg: 8e9).

We read user manual, under CEM20 reference temperature, Ask to type nREFT. We don't know where to type. There is no detail about it. If anybody know about it please help us

What software are you using to program the logger (DeLogger, DeTerminal, ...)? Could you please reply the code that are you testing?

Have you tested also other channel types on CEM20 (e.g. voltages)? Regarding nREFT, if you have a CEM20 set as # 1, if you type 1REFT the internal CEM20 reference temperature is returned.

teo

Hi Teo,

We have Delogger 5 Pro and Delogger 4 Pro. Normally we use Frequency, Resistance, Bridge, and Temperature (YSOI5) channel types. They are working but when we try to connect thermocouple we facing this problem.

Following code for Delogger 5 pro. We connect thermocouple in last two channels:

'JOB=JOB1
'COMPILED=2010/06/04 16:51:29
'TYPE=dt80
DT=\d
BEGIN"JOB1"
CATTN
'Spans and polynomial declarations
'Thermistor declarations
'Switches declarations
'Parameter declarations
'Global declarations
RS1S
'schedule definition
RA("B:",ALARMS:OV:100KB,DATA:OV:1MB)10M LOGONA GA
1FW
1*YS05
2FW
2*YS05
3FW
3*YS05
4FW
4*YS05
101FW
101*YS05
102FW
102*YS05
103FW
103*YS05
104FW
104*YS05
105FW
105*YS05
106FW
106*YS05
107FW
107*YS05
108FW
108*YS05
109FW
109*YS05
110FW
110*YS05
111FW
111*YS05
112FW
112*YS05
113FW
113*YS05
114FW
114*YS05
115FW
115*YS05
116FW
116*YS05
117FW
117*YS05
118FW
118*YS05
119TT
120*TT
120+TT
REFT
END
'end of program file

I convert this program using "Load Program Text" and Type 1REFT in last. After that i send this code to dataTaker using "Send Program". After send Datataker go to Halt mode. I don't know why?

If you know please reply me with each single steps.

Thank you
Amalan

Using REFT the DT80's internal temperature is returned so if you want to read CEM20 # 1 internal temp you have to type 1REFT. Anyhow, I don't think this is the point.

The program syntax seems correct and the program should be loaded correctly by the logger. Are the other channels (other than thermocouples) on CEM20 read correctly?

Be careful, if you edit the program code in DeLogger text window and you try to overwrite an existing job with data stored, the program will fail to overwrite (this maybe what you intend saying "After send Datataker go to Halt mode").

So you have to clean up data or the entire program before the program to be sent. Using the ProgX.d80, this problem doesn't exist as DeLogger does the "dirty cleaning job" for you.

P.S. You can set the CEM20 reference temperature also in the program builder selecting "User" as a Signal an typing 1REFT in the Wiring field.

Hi Teo,

I solved this problem. Thank you for your help. I had another problem connecting Load cell with dataTaker. I will open as a new topic.

Thank you all of you

Amalan