MRC MHT-381SD User manual

Your purchase of this
HUMIDITY/TEMP.
MONITOR with SD CARD
DATALOGGER marks a
step forward for you
into the field of
precision measurement.
Although this
DATALOGGER is a
complex and delicate
instrument, its durable
structure will allow
many years of use if
proper operating
techniques are
developed. Please read
the following
instructions carefully
and always keep this
manual within easy
reach.
OPERATION MANUAL
SD card real time datalogger
HUMIDITY/TEMP. MONITOR
Model : MHT-381SD
PLEASE READ THIS MANUAL CAREFULLY BEFORE OPERATION
3, Hagavish st. Israel 58817 Tel: [phone], Fax: [phone] [email protected]
MRC.12.20

TABLE OF CONTENTS
1. FEATURES..................................................................1
2. SPECIFICATIONS........................................................
.
1
3. FRONT PANEL DESCRIPTION.......................................4
3-1 Display..................................................................4
3-2 Logger button, Enter button...................................4
3-3 button, Time button..........................................
.
▲4
3-4 button..............................................................
.
▼4
3-5 SET button............................................................4
3-6 Humidity/Temp. sensor..........................................4
3-7 Hanging holes.......................................................
.
4
3-8 Stand....................................................................4
3-9 Battery cover/Battery compartment........................
.
4
3-10 Screw of the battery cover...................................
.
4
3-11 Reset button.......................................................
.
4
3-12 RS-232 output terminal........................................ 4
3-13 SD card socket....................................................
.
4
3-14 DC 9V power adapter input socket........................4
3-15 Hanging unit ( with sticker )................................. 4
4. MEASURING PROCEDURE............................................5
5. DATALOGGER.............................................................5
5-1 Preparation before execute datalogger function.......5
5-2 Datalogger........................................................... 7
5-3 Check time information.......................................... 7
5-4 SD Card Data structure.......................................... 8
6. Saving data from the SD card to the computer..............9
7. ADVANCED SETTING...................................................10
7-1 SD memory card Format........................................
.
11
7-2 Set clock time ( Year/Month/Date, Hour/Minute/
Second ).............................................................. 11
7-3 Set sampling time..................................................12
7-4 Set beeper sound ON/OFF......................................12
7-5 Set SD card Decimal character................................13
7-6 Select the Temp. unit to or ............................℃℉ 14
7-7 Set RS232 data output ON/OFF..............................
.
14
8. POWER SUPPLY from DC ADAPTER..............................15
9. BATTERY REPLACEMENT.............................................15
10. SYSTEM RESET.........................................................15
11. RS232 PC serial interface...........................................16
12. PATENT....................................................................17

1. FEATURES
* Monitor with real time data logger, save the measuring
data along the time information ( year, month, date,
minute, second ) into the SD memory card and can be
down load to the Excel, extra software is no need.
User can make the further data or graphic analysis by
themselves.
* Show Humidity and Temperature value in the same LCD.
* 0.1 %RH resolution for the humidity reading,
0.1 degree resolution for the Temp. reading.
*Used the precision capacitance type humidity sensor,
professional and high accuracy.
* SD card capacity : 1 GB to 16 GB.
* Sampling adjustment : 5/10/30/60/120/300 seconds
and auto function.
* Large LCD display, easy readout.
* Microcomputer circuit, high reliability.
* Low power consumption and long battery life when
use battery power.
* DC 1.5V ( UM-4, AAA ) battery x 6 PCs or DC 9V
adapter in.
* RS232/USB computer interface available.
*Patented
2. SPECIFICATIONS
2-1 General Specifications
Circuit Custom one-chip of microprocessor LSI
circuit.
Display LCD size : 60 mm x 50 mm
Measurement Humidity and Temperature
Memory Card SD memory card, 1 GB to 16 GB.
1

Datalogger 5/10/30/60/120/300/600 seconds
Sampling Time or Auto.
*
Default sampling time is 60 seconds.
* The " Auto " sampling . means when
the measuring value is changed ( > ±
1 %RH or > ± 1 ) will save the℃
data one time only.
Advanced * SD memory card Format
setting * Set clock time ( Year/Month/Date, Hour/Minute/
Second )
* Set sampling time
* Set beeper sound ON/OFF
* Set SD card Decimal character
* Select the Temp. unit to or℃℉
* Set RS232 data output ON/OFF
Update Time Approx. 1 second if measuring data
of Display is changed.
Data Output RS 232/USB PC computer interface.
* Connect the optional RS232 cable
UPCB-02 will get the RS232 plug.
* Connect the optional USB cable
USB-01 will get the USB plug.
Operating 0 to 50 .℃
Temperature
Operating Less than 85% R.H.
Humidity
Power Supply *
A
Alkaline or heavy duty DC 1.5 V battery
( UM4, AAA ) x 6 PCs, or equivalent.
*
A
DC 9V adapter input. ( AC/DC power
adapter is optional ).
2

Battery life If use the new battery ( alkaline type )
and sampling time set to 60 seconds,
the battery life will be > one month
typically.
Weight 282 g/0.62 LB.
Dimension 132 x 80 x 32 mm
( 5.2 x 3.1 x 1.3 inch )
Accessories Instruction manual...........................1 PC
Included Hanging unit ( with sticker ).............
.
1 PC
Optional SD Card ( 2 GB ).
Accessories AC to DC 9V adapter.
USB cable, USB-01.
RS232 cable, UPCB-02.
Data Acquisition software, SW-U801-WIN.
2-2 Electrical Specifications (23±5 )℃
Humidity
Range 10 % to 95 % R.H.
Resolution 0.1 % R.H.
Accuracy 70% RH :≧± (3% reading + 1% RH).
< 70% RH :
± 3% RH.
Temperature
Range 0 to 50 ,32 to 122 .℃℃℉ ℉
Resolution 0.1 degree
Accuracy - 0.8 .℃℃
- 1.5 .℉℉
@ Above specification tests under the environment RF Field Strength
less than 3 V/M & frequency less than 30 MHz only.
3

3. FRONT PANEL DESCRIPTION
Fig. 1
3-1 Display
3-2 Logger button, Enter button
3-3 button, Time button▲
3-4 button▼
3-5 SET button
3-6 Humidity/Temp. sensor
3-7 Hanging holes
3-8 Stand
3-9 Battery cover/Battery compartment
3-10 Screw of the battery cover
3-11 Reset button
3-12 RS-232 output terminal
3-13 SD card socket
3-14 DC 9V power adapter input socket
3-15 Hanging unit ( with sticker )
4

4. MEASURING PROCEDURE
1)Install the batteries into the battery compartment :
* Loose the " Screw of the battery cover " ( 3-10, Fig. 1 )
and take away the " Battery Cover " ( 3-9, Fig. 1 ) from
the meter.
* Replace with DC 1.5 V battery ( UM4/AAA, Alkaline/Heavy
duty type ) x 6 PCs, and reinstate the cover.
* Make sure the battery cover is secured after changing
the battery.
2)The " Display " ( 3-1, Fig. 1 ) will show both the
humidity and the temperature value that sensing from
Humidity/Temp. sensor " ( 3-6, Fig. 1 ).
5. DATALOGGER
5-1 Preparation before execute datalogger function
a. Insert the SD card
Prepare a " SD memory card " ( 1 GB to 16 GB, optional ),
insert the SD card into the " SD card socket " ( 3-13, Fig. 1)
with the correct direction exactly.
b. SD card Format
If SD card just the first time use into the meter, it
recommend to make the " SD card Format " at first,
please refer chapter 7-1 ( page 11 ).
c. Time setting
If the meter is used at first time, it should to adjust the
clock time exactly, please refer chapter 7-2 ( page 11 ).
5

d. Decimal format setting
The numerical data structure of SD card is
default used the " . " as the decimal, for
example "20.6" "1000.53" . But in certain
countries ( Europe ...) is used the " , " as the
decimal point, for example " 20, 6 "
"1000,53". Under such situation, it should
change the Decimal character at first, details
of setting the Decimal point, refer to Chapter
7-5, page 13.
e. 3 Information of LCD display
* If the Display show :
It means that the SD card exist the problem
CH- or the SD card memory is full, it should
CArd change SD memory card.
* If the Display show :
It means that the battery is low voltage.
LobAt Under such condition, the Datalogger
function is disable.
* If the Display show :
It means that the SD card is not plugged
no into the meter.
CArd
6

5-2 Datalogger
a. Start the datalogger
Press the " Logger button ( 3-2, Fig. 1 ) > 2 seconds
continuously, until the Display show the indicator "
DATALOGGER ", release the " Logger Button " ( 3-2, Fig.
1 ), then the measuring data along the time information
will be saved into the memory circuit.
Remark :
*
How to set the sampling time, refer to Chapter 7-3,
page 12.
*
How to set the beeper sound is enable, refer to
Chapter 7-4, page 12.
c.. Finish the Datalogger
During execute the Datalogger function ( Display show the
" Datalogger " indicator ), press the " Logger button " ( 3-2,
Fig. 1 ) > 2 seconds continuously, until the Display
indicator " DATALOGGER " is disappeared, release the
" Logger Button " will finish the Datalogger function.
Before take away the SD card from the
meter, it should execute the
procedures of " Finish the Datalogger ",
otherwise some existing recent save
data may loss.
5-3 Check time information
Press " Time button " ( 3-3, Fig. 1 ) > 2 seconds
continuously, the LCD display will present the time
information of Year/Month/Date, Hour/Minute/Second and
the sampling value.
7

5-4 SD Card Data structure
1)When the first time, the SD card is used into the meter,
the SD card will generate a folder :
HTC01
2)If the first time to execute the Datalogger, under the
route HTC01\, will generate a new file name
HTC01001.XLS.
After exist the Datalogger, then execute again, the data
will save to the HTC01001.XLS until Data column reach
to 30,000 columns, then will generate a new file, for
example HTC01002.XLS
3)Under the folder HTC01\, if the total files more
than 99 files, will generate anew route, such as
HTC02\ ........
4)The file's route structure :
HTC01\
HTC01001.XLS
HTC01002.XLS
.....................
HTC01099.XLS
HTC02\
HTC02001.XLS
HTC02002.XLS
.....................
HTC02099.XLS
HTCXX\
.....................
.....................
Remark :
XX : Max. value is 10.
8