Comet system forum

Edward · 03-10-2007 12:09:58

How adjust S3120?

this is urgent case

thanks

p.s we had HM0023.HM024.MD046

Edward

TomasT · 03-10-2007 13:24:52

Work with HM0023.HM024.MD046 is on
http://www.cometsystem.cz/english/manua … -md046.pdf

I send the MANUAL FOR CHECKING OF MEASUREMENT ACCURACY (CALIBRATION) AND ADJUSTMENT
BLACK BOX LOGGERS - Instrument Family Sxxxx and Rxxxx
to your e-mail

Edward · 04-10-2007 03:34:16

Thanks!

I got the e-mail,but it's a little difficult to understand.

Could you tell me how can I do to let it "easily"

TomasT · 04-10-2007 08:21:24

Use the sequence step by step by MANUAL FOR ADJUSTMENT BLACK BOX LOGGERS (last 2 pages of 4). If you need adjustment humidity only, don't insert the device into calibration box, but use calibration vessel MD046 with desired solution. The minimum required time for humidity settling inside of the calibration vessel is 3 hours at constant ambient temperature. Calibration vessel including connected humidity sensor should not be exposed to solar radiation or air draught – ambient temperature must not change during the settling time and during reading of measured values. The best way is to put entire device under calibration and the vessel to a thermo box of suitable size (e.g. polystyrene box with tight lid).

Edward · 06-10-2007 09:15:09

I got a big problem
I used MD046 to adjust S3120,but
when stander 10% S3120 show me 15%
20% 27%
How can I do ?

thank you

Have a nice day

TomasT · 08-10-2007 07:24:01

The calibrated instrument S3120, calibration vessel and solution in the vessel must have identical temperature. For comparison: temperature difference of 1 °C between humidity sensor itself and the solution in calibration vessel causes humidity measurement error up to 6 %RH!

The minimum required time for humidity setting inside of the calibration vessel is 3 hours at constant ambient temperature.

Wash out open calibration vessel carefully before thre procedure by water (best way is to use distilled water) and carefully dry out (it is recommended to use air flow). Even minimum remains of pollution or water influence the ingredients of the humidity standard solution and this way the value of generated humidity!

Send me more information about your sequence. How do you generate the humidity 20% RH? Do you have the steady-state values (the best solution is to use graph...)?

Edward · 08-10-2007 08:02:22

I got 20%RH solution from "rotronic" Taiwan.

We have followed adjustment procedure step by step.

There is one step of them::

PC software downloads recorded data to the PC and displays a table, where for each channel and both adjusted points are listed values of the instrument

AD converter and corresponding value of measured quantity. These parameters were stored to instrument in the last adjustment and will be overwritten with new values

How can I get new values?

The adjusted points of S3120 is 15%(at solution 10%RH), 27%(at solution 20%).and 83% (at solution 80%).

Hope to hear from you asap.

can you e-mail us “new values” ?

Best regards,

Edward

TomasT · 08-10-2007 10:03:39

You can get the new values by executing of next three steps from manual.

New values ADC are stored in adjusted device. You can get theese values by executing steps from manual. Ethalon value is on label of your solution (10% RH, or 80 % RH). It isn't possible to send this data to you by e-mail.
If you have still some troubles, you can ask your certificate laboratory, or send device to us.

Edward · 08-10-2007 11:15:49

Would you please tell me what is "etalon"?

thanks

TomasT · 08-10-2007 12:05:51

Etalon is measurement standard, in your case etalon=solution and ethalon value=10 or 80% RH.

Comet system forum

Temperature, Humdity,

Pressure Transmitters

and Data Loggers

#1 03-10-2007 12:09:58

About adjust?

#2 03-10-2007 13:24:52

Re: About adjust?

#3 04-10-2007 03:34:16

Re: About adjust?

#4 04-10-2007 08:21:24

Re: About adjust?

#5 06-10-2007 09:15:09

Re: About adjust?

#6 08-10-2007 07:24:01

Re: About adjust?

#7 08-10-2007 08:02:22

Re: About adjust?

#8 08-10-2007 10:03:39

Re: About adjust?

#9 08-10-2007 11:15:49

Re: About adjust?

#10 08-10-2007 12:05:51

Re: About adjust?

Board footer