4-2 Measuring Procedure
The H300 default unit of measure is °C. To switch to °F see section 5-1. The sampling time default for data logging is set at 2 seconds. To change this sampling time see section 4-7.
4-3 Humidity & Tem perature Measurem ent
1.Plug the “ Probe Plug” (4-11, Fig. 1) into the “ Probe Input Socket” (4-10, Fig. 1).
2.Power on the meter by pressing the “ Power Button” (4-2, Fig.1) for 2 seconds. The LCD will show the units of measure on the display after a quick self test. It will display the %RH in the main display and temperature in the bottom section of the LCD.
3.The meter displays temperature in °C by default, t o switch to °F see section 5-1.
4-4 DEW Point Measurem ent
To measure DEW Point follow the instructions shown in section 4-3 and then press the
“Function Button” (4-5, Fig. 1) momentarily once. The LCD will show the word DEW in the main display and temperature below.
4-5 Data Hold
While taking measurements you can freeze the displayed value by pressing the “ Hold Button” (4-3, Fig. 1) once. The HOLD symbol will be displayed along with the held measured value on the LCD. By pressing the “ Hold Button” (4-3, Fig. 1) a second time will release the displayed value and turn off the data hold function.
4-6 Data Record (MAX /MIN)
1.To record the maximum and minimum readings, press the “ REC Button” (4-4, Fig. 1). The REC sy mbol will be displayed on the LCD. By pressing the “ REC Button” (4-4, Fig. 1) you can toggle through the Max and Min values.
2.To delete the recorded values press and hold the “ Hold Button” (4-3, Fig. 1) for about 3 seconds.
3.To stop using the REC function, press and hold the “ REC Button” (4-4, Fig. 1) for at least 3 seconds.
4-7 Auto Data Logger
Setup process will be described first because the Auto Data Logger function will not work if the sampling seconds is set to 0. If you do not need to setup your meter, skip to step 7.
1.Press and hold the “ SET Button” (4-6, Fig.1) for about 3 seconds to enter the settings menu (you will see the word code on the bottom of the LCD).
2.Pressing the “ Enter Button” (4-4, Fig. 1) will bring you to the unit of measure for temperature (see section 5-1 if you wish to change the unit of measure).
3.Press the “Logger Button” (4-6, Fig.1) and SEC will be displayed on the bottom of the LCD.
4.To cycle through the number of seconds you would like meter to wait between loggings, press the “ Function Button” (4-5, Fig. 1). By pressing the “ Function Button” (4-5, Fig. 1) the following number of seconds will be displayed on the top of the LCD: 1, 2, 10, 30, 60, 600, 1800 or 3600.
5.Once the number seconds you require is displayed on the LCD, press the “Logger Button” (4-6, Fig.1).
6.Press the “ Enter Button” (4-4, Fig. 1) to ex it the settings menu, then press the “ ESC Button” (4-3, Fig. 1).
