Heath-consultants Detecto Pak-Infrared (DP-I) Manuale Utente Scaricare il pdf (Pagina 21)

102105-0 DP-IR MANUAL REV M

Page 21 of 35

CHAPTER V

Surveying with the DP-IR

**Note**

Refer to your company’s specic leak survey training and procedures for being qualied and for

specic instrument use instructions.

**Warning**

Do not submerge the probe in water. Severe damage may result.

**Note**

The internal pump will always be running. Should there be insufcient ow through the

instrument the FLOW ERROR icon will show and the alarm will sound. To test that the pump is

working, plug the inlet with your nger, this will cause a FLOW ERROR and alarm. If there is

no FLOW ERROR and alarm, the pump is not working properly.

**Note**

There is always a small amount of methane in the air. This natural methane background is

also measured by the DP-IR. The DP-IR is very capable of measuring slight changes in the

environmental conditions.

**Note**

When moving the DP-IR from a cold environment to a hot and humid environment quickly,

condensation may form on the optics. If this happens, the instrument must remain running for

several minutes in order to exhaust this condensation.

Surveying with the DP-IR is similar to surveying with previous generation FI instruments. To

survey with the DP-IR, follow these basic rules:

1. Replace the dust lter at least daily. Severe dusty to wet conditions may require

replacement of the lter more often.

2. Recharge the battery after each use to ensure full battery charge for the next day.

3. Perform the self-test at least at the start of the survey day.

4. Perform ow-test by blocking the inlet and conrming that it causes FLOW ERROR

alarm. Perform this test at least at the start of the survey day and throughout the

day if needed.

5. Verify that the alarm level is set correctly.

6. Verify that the ow alarm and pump are working correctly.

7. Zero the instrument as needed during the survey due to environmental changes.

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Heath-consultants Detecto Pak-Infrared (DP-I) Manuale Utente Pagina 21