Lutron Electronics HT-305 Operation Manual Download Page 8

4-3 Data Hold

During the measurement, press the " Hold Button " ( 3-3,
Fig. 1 ) once will hold the measured value & the LCD will
display a " HOLD " symbol.
* Press the " Hold Button " once again will release the data

hold function.

4-4 Data Record ( Max., Min. reading )

* The data record function records the maximum and

minimum readings. Press the " REC Button " ( 3-4, Fig.
1 ) once to start the Data Record function and there
will be a " REC. " symbol on the display.

* With the " REC. " symbol on the display :

a) Press the " REC Button " ( 3-4, Fig. 1 ) once, the 

" REC. MAX. " symbol along with the maximum value
will appear on the display.
If intend to delete the maximum value, just press
the " Hold Button " ( 3-3, Fig. 1 ) once, then  the
display will show the " REC. " symbol only & execute
the  memory function continuously.

b)Press the " REC Button " ( 3-4, Fig. 1 ) again, the 

" REC. MIN. " symbol along with the minimum value
will appear on the display.
If intend to delete the minimum value, just press
the " Hold Button " ( 3-3, Fig. 1 ) once, then 
the display will show the " REC. " symbol only &
execute the  memory function continuously.

c) To exit the memory record function, just press the 

" REC " button for 2 seconds at least. The display will
revert to the current reading.

6

Summary of Contents for HT-305

Page 1: ...TER marks a step forward for you into the field of precision measurement Although this METER is a complex and delicate instrument its durable structure developed Please read the following instructions...

Page 2: ...tton 5 3 5 Function Button 5 3 6 Battery Compartment Cover 5 3 7 Probe Input Socket 5 3 8 Probe Plug 5 3 9 Probe handle 5 3 10 Probe head Humidity Temperature 5 4 GENERAL MEASURING PROCEDURE 6 4 1 Hum...

Page 3: ...High accuracy and high precision Dew point measurement Just few panel buttons easy operation Microprocessor circuit assures maximum possible accuracy provides special functions and features LCD with t...

Page 4: ...ity function Data Hold Freeze the display reading Memory Recall Maximum Minimum value Sampling Time Approx 0 8 second Power off Auto shut off saves battery life Operating 0 to 50 Temperature Operating...

Page 5: ...degree Accuracy 0 8 1 5 Dew Point Range 25 3 to 48 9 Resolution 0 1 Range 13 5 to 120 1 Resolution 0 1 Remark Dew Point display value is calculated from the Humidity Temp measurement automatically Th...

Page 6: ...splay 3 2 Power Button 3 3 Hold Button ESC Button 3 4 REC Button Enter Button 3 5 Function Button 3 6 Battery Compartment Cover 3 7 Probe Input Socket 3 8 Probe Plug 3 9 Probe handle 3 10 Probe head H...

Page 7: ...show on the display upper display is Humidity value the lower display is the temperature value 3 The meter Temp display unit is defaulted to If intend to let the meter s temperature unit default to t...

Page 8: ...n 3 4 Fig 1 once the REC MAX symbol along with the maximum value will appear on the display If intend to delete the maximum value just press the Hold Button 3 3 Fig 1 once then the display will show t...

Page 9: ...he upper display will show 1000 1000 is the password code that allow to execute the Advanced Measuring Procedure following After display show COde 1000 push the Enter Button 3 4 Fig 1 once will go to...

Page 10: ...Button 3 4 Fig 1 to confirm and save the selection data into memory IC permanently Press the Esc Button 3 3 Fig 1 will revert to normal display screen 5 2 Auto power ON OFF Use the Set Button 3 11 Fig...

Page 11: ...LCD display show it is necessary to replace the battery However in spec measurement may still be made for several hours after low battery indicator appears before the instrument become inaccurate 2 S...

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