Vaisala PTU300 Podręcznik Użytkownika Pobierz pdf (Strona 134)

User's Guide ______________________________________________________________________

132 _________________________________________________________________ M210796EN-A

0507-013

Figure 52 Selecting Point 1 Reference Type

6. Remove the filter from the probe and insert the probe head into

a measurement hole of the dry end reference chamber (for

example, LiCl: 11 % RH in the humidity calibrator HMK15.)

Use the adapter fitting for the PTU307 probe.

7. Wait at least 30 minutes for the sensor to stabilize. Follow the

stabilization from the GRAPH display.

8. Press the READY key when stabilized. If you have chosen the

Other reference value, enter now the reference value by using

the arrow keys.

When carrying out the 2-point adjustment proceed to the next

adjustment point and carry out the procedure as described in the

previous items.

9. Answer YES to confirm the adjustment. Press the OK key to

return to the adjustment menu.

10. Press the EXIT key to close the adjustment mode and return to

the basic display. Before closing the adjustment mode, feed the

adjustment information into the device, see section Feeding

Adjustment Information on page 138.

Using Serial Line

Note that the difference between the two humidity references must be

at least 50% RH.

1. Connect the PTU300 to a PC. See section Serial Line

Communication on page 64. Open a terminal program.

2. Carry out the chemical purge (if available).

3. Press the ADJ button.

4. Remove the filter from the probe and insert the probe head into

a measurement hole of the dry end reference chamber (for

example, LiCl: 11 % RH in the humidity calibrator HMK15).

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Vaisala PTU300 Podręcznik Użytkownika Strona 134