Humidity tests and influence on UMX5, as well as on Paper Filter, performed at IKT Laboratory on September, 23rd. 2008

This Document describes the tests performed and the Results obtained.

 

Test Setup

The Mettler Toledo UMX5 Micro Balance in the ECC-Chamber, connected with a serial to USB cable to the Toshiba Laptop. The UMX testing program installed on said Laptop.

The Environmental Control Monitor (Software to monitor the ECC-Chamber) installed on the Control PC located in the Technical Components Box.

A standard MTL Paper Filter for the measurement of Diesel Particular Matter.


 

Actions performed

 

Time

Action

Observation / Comments

 

no Action until 9:50h // T=22C, RH=45%, Chiller T=7C

Performance as expected, everything OK

9.50 h

Calibration UMX5

 

9.55 h

Tara Function on UMX5, 1st. Time

 

10.50 h

Tara Function on UMX5, 2nd. Time

 

10.52 h

Inserted Paper-Filter into UMX5

Weight of Filter = 100.5055mg

10.55 h

Start Micro Balance (UMX5) Testing Programme on PC

 

11.06 h

Restart Testing Program again with new Log File

Very slight Disturbance on RH, still within Spec.

13.00 h

Increased RH to 50% (+5%), Chiller T from 7C to 9C

RH swinging in nicely, 30 Min later stable again, as expected

16.30 h

Decreased RH to 45% (-5%), Chiller T from 9C to 7C

RH swinging in nicely, 60 Min later stable again, as expected

 

no further Action until midnight // End of Experiment

Performance as expected, everything OK

 


 

Results obtained

1)               Influence of higher Humidity on Paper Filter (+50μg gain in Weight)



 

2)               The influence on the UMX5 Micro Balance (direct reading Result)


 

3)               The influence on the UMX5 Micro Balance Zero Point




 

4)               Temperature Chart



 

 

5)               Humidity Chart



 

6)               Dew Point Chart

 

All these information is Copyright © IKT AG, 2008/ML

 

--- End of Document ---

 

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