Lutron Electronics HT-305, HT-3015 Operation Manual

pocket type

HUMIDITY METE

R

Model : HT-305

Your purchase of this HUMIDITY METER 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 carefully and
always keep this manual within easy reach.

OPERATION MANUAL

TABLE OF CONTENTS

1. FEATURES..............................................................1

2. SPECIFICATIONS....................................................2

3. FRONT PANEL DESCRIPTION...................................5

3-1 Display.............................................................

.

5

3-2 Power Button....................................................5

3-3 Hold Button......................................................

.

5

3-4 REC Button.......................................................

.

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 Humidity and Temperature measurement.............

.

6

4-2 Dew point measurement......................................6

4-3 Data Hold...........................................................

.

7

4-4 Data Record (Max, Min reading)........................... 7

5. BATTERY REPLACEMENT...........................................12

1. FEATURES

*Humidity + Temperature + Dew point are combined

into one meter, intelligent and professional.

*0.1 %RH resolution for the humidity reading,

0.1 degree resolution for the Temp. reading.

*Wide humidity & temp. measuring range.
*Pocket size with Separate humidity & temp. probe,

easy operation. & remote measurement.

*Fast humidity measuring response time.
*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 two display, easy readout.
*Show the humidity & temperature values on the

LCD display at same time.

*Heavy duty & compact housing case, designed

for easy carry out & operation.

*Records Maximum and Minimum readings with Recall.
*Auto shut off saves battery life.
*Data hold function for freezing the desired value

on display.

*Built-in low battery indicator.

1

2. SPECIFICATIONS

2-1 General Specifications

Circuit Custom one-chip of microprocessor LSI

circuit.

Display LCD size : 44 mm x 29 mm

dual function LCD display.
Measurement Humidity : %RH ( Relative Humidity )
Unit Temperature : or .℃℉

Dew point : or .℃℉
Response Time 5 to 30 seconds typically.

@ Reach the 85% reading value

Temperature Automatic temp. compensation for the
Compensation humidity 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 Main instrument : Less than 85% R.H.
Humidity Probe : 0 to 95 %RH.
Power Supply 006P DC 9V battery

( Alkaline or Heavy duty type ).
Power Current Approx. DC 4.6 mA.
Weight 264 g/0.67 LB.

@ Battery is included.

Dimension

Main instrument :

135x60x33 mm, ( 5.3x2.4x1.3 inch ).

Humidity Sensor Probe :

197 mm ( 7.8 inch ) in length.

Accessories Instruction manual......................1 PC

Included Humidity probe...........................1 PC

2