HT Instruments HT3302 Notice D'utilisation page 34

Temperature measurement of forced ventilation systems (HVAC)
1. Activate the white LED external illuminator function (see § 5.1).
2. Press the T key to activate measurement. The laser pointer and the symbol "
appear on the display.
3. Direct the white light beam (see Fig. 3 – part 1) out of the ventilation system (see Fig.
19) and carry out measurement as described above.
Fig. 19: Measuring output temperature of HVAC systems
Detection of dispersion of refrigerating agent in car engines and HVAC systems
1. Activate the "UV" (Ultraviolet) function with blue LEDs (see § 5.1).
2. Press the T key to activate measurement. The laser pointer and the symbol "UV"
appear on the display.
3. Direct the blue light beam (see Fig. 3 – part 2) onto the engine unit (see Fig. 20). The
light will reveal the presence of dispersion of refrigerating agent. Carry out
measurement as described above.
Fig. 20: Measuring dispersion temperature of refrigerating agent
EN - 13
HT3302
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