MRC HD-3008 User manual

Dew Point + Type K Thermometer
HYGROMETER
Model : HD-3008
PLEASE READ THIS MANUAL CAREFULLY BEFORE OPERATION
3, Hagavish st. Israel 58817 Tel: [phone], Fax: [phone] [email protected]
MRC.8.20

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 REC. Button............................................................5
3-4 Hold Button............................................................ 5
3-5 Button..................................................................... 5
3-6 Function Button ..................................................... 5
3-7 Battery Compartment/Cover.................................... 5
3-8 Temp. Probe input Socket .......................................
.
5
3-9 Humidity Probe input Socket ....................................5
3-10 RS-232 Output Terminal......................................... 5
3-11 Stand.................................................................... 5
4. MEASURING PROCEDURE.......................................6
4-1 Hygrometer measurement..................................
.
6
4-2 Dew point measurement.....................................6
4-3 Type K thermometer measurement.....................
.
6
4-4 Data Hold..........................................................
.
7
4-5 Data Record (Max, Min reading).......................... 7
5. OFFSET TEMPERATURE ADJUSTMENT for
Type K THERMOMETER........................................... 8
6. AUTO POWER OFF DISABLE.....................................10
7. RS232 PC SERIAL INTERFACE..................................
.
10
8. BATTERY REPLACEMENT..........................................11
9. OPTIONAL PROBES & ACCESSORIES.........................12

1. FEATURES
* Hygrometer + Dew point + Type K Thermometer are
combined into one meter, intelligent.
* Dew point measurement.
* Thin-film capacitance sensor for humidity
measurement, high precision.
* Type K thermometer build in temperature linearity
& precision cold junction compensation circuit, high
accuracy.
* Microprocessor circuit assures maximum possible
accuracy, provides special functions and features.
* Large LCD with two display, easy readout.
* 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.
* RS 232 PC serial interface.
* Show the humidity & temperature values on the
LCD display at same time.
* Conversion is selected by push button on front
panel easily.
* Built-in low battery indicator.
* Humidity measurement uses a high precision
thin-film capacitance sensor for fast response,
not depending on air flow passing through the probe.
* Humidity probe built-in thermistor sensor for
temperature measurement, fast response time.
* Wide humidity & temp. measuring range.
* Separate humidity & temp. probe, easy operation. &
remote measurement.
1

2. SPECIFICATIONS
2-1 General Specifications
Circuit Custom one-chip of microprocessor LSI
circuit.
Display 51 mm x 32 mm, 15 mm ( 0.6" ) digit size.
dual function LCD display,
Measurement Hygrometer :
R.H. ( Relative Humidity )
Temperature - 蚓, 蚌.
Dew point :
Type K thermometer :
Sensor Hygrometer ( Dew Point ) meter :
* Humidity : High precision thin-film
capacitance sensor.
* Temperature : Thermistor.
Type K thermometer :
Thermocouple probe.
Data Hold Freeze the display reading by push button.
Memory Recall Maximum & Minimum.
Sampling Time Approx. 0.8 second.
Power off Auto shut off saves battery life or manual off
by push button.
Data Output RS 232 PC serial interface.
Operating 0 to 50 .
Temperature
Operating Main instrument : Less than 80% R.H.
Humidity Probe : Less than 95% R.H.
Power Supply 006P DC 9V battery
( Alkaline or Heavy duty type ).
2

Power Current Approx. DC 7 mA.
Weight 250 g/0.55 LB.
Dimension Main instrument:
195 x 68 x 30 mm ( 7.6 x 2.6 x 1.2 inch )
Humidity Sensor Probe:
Round 26 mm Dia. x 160 mm.
Accessories Instruction manual......................1 PC.
Included Humidity probe...........................1 PC.
Carryin
g
case.............................
.
1 PC.
Optional 33% RH HUMIDITY CALIBRATOR
Accessories Model: RHA-33
75% RH HUMIDITY CALIBRATOR
ref. page 11
Model : RHA-75
Type k thermocouple Probe :
Model : TP-01, TP-02A, TP-03,
TP-04.
2-2 Electrical Specifications ( 23 5 蚓)
Humidity/ Temperature
Ran
g
e 10 % to 95 % R.H.
Humidity Resolution 0.1 % R.H.
Accuracy 70% RH :
( 3 % readin
g
+ 1 % R.H.)
< 70 % R.H. :
3% R.H.
Ran
g
e0
蚓
to 50
蚓
, 32
蚌
to 122
蚌
.
Temperature Resolution 0.1 de
g
ree
Accuracy
蚓
- 0.8
蚓
.
蚌
- 1.5
蚌
.
3

Dew Point
蚓
Ran
g
e -25.3
蚓
to 48.9
蚓
Resolution 0.1
蚓
蚌
Ran
g
e -13.5
蚌
to 120.1
蚌
.
Resolution 0.1
蚌
.
Remark :
* Dew Point display value is calculated from the
Humidity/Temp. measurement automatically.
*The Dew Point accuracy is sum accuracy value of Humidity
& Temperature measurement..
Type K Thermomete
r
蚓
Ran
g
e -100.0 to 1300.0
蚓
Resolution 0.1
蚓
Accuracy
-
5
0
.0 to 130
0
.0
蚓
: ( 0.2 % + 0.5
蚓
)
-
5
0
.1 to
-
10
0
.0
蚓
: ( 0.2 % + 1
蚓
)
蚌
Ran
g
e -148.0 to 2372.0
蚌
Resolution 0.1
蚌
.
Accuracy
-
5
8
.0 to 237
2
.0
蚌
: ( 0.2 % + 1
蚌
)
-
5
8
.1 to
-
14
8
.0
蚌
: ( 0.2 % + 1.8
蚌
)
4

3. FRONT PANEL DESCRIPTION
Fig. 1
3-1 Display 3-8 Temp. Probe input Socket
3-2 Power Button 3-9 Humidity Probe input Socket
3-3 REC. Button 3-10 RS-232 Output Terminal
3-4 Hold Button 3-11 Stand
3-5 蚓,蚌Button 3-12 Sensor Head ( R.H., Temp. )
3-6 Function Button 3-13 Probe Handle
3-7 Battery Compartment 3-14 Probe Plug
/C
over 5

4. MEASURING PROCEDURE
4-1 Hygrometer measurement
( Humidity & temperature measurement )
1)Plug the Humidity probe into the " Humidity Probe input
Socket " ( 3-9, Fig. 1 ).
2)Power on the meter by pressing the Power Button ( 3-2,
Fig. 1 ), the LCD shows the unit " % RH " & " 蚓" at the
same time and measured value will show on the display
( upper display is Humidity value, the lower display is the
temperature value ) .
3)Press the " 蚓,蚌Button " ( 3-5, Fig. 1 ) to select the
temperature unit. You can see the current unit at the
bottom-right position of the LCD display.
4-2 Dew point measurement
The procedures of " Dew point measurement " are same as the
" Hygrometer measurement ", except select the " Dew point "
function by pressing the " Function Button "(3-6, Fig. 1), the
LCD will show the unit " DEW " & " 蚓( or 蚌).
4-3 Type K thermometer measurement
1)Take out the humidity probe away from the " Humidity
Probe input Socket " ( 3-9, Fig. 1 ).
* If not take out the humidity probe, the type K
measurement will be still available.
2)Plug the optional type K temperature probe into the
" Temp. Probe input Socket " ( 3-8, Fig. 1 ). Press the
" Function Button " ( 3-6, Fig. 1 ) once a while until the
display showing the unit of " 蚓" ( or 蚌) only.
6

4-4 Data Hold
During the measurement, press the " Hold Button " ( 3-4,
Fig. 1 ) will hold the measured value & the LCD will
indicate a " HOLD " symbol on the display.
* Press the " Hold Button " again to release the data hold
function.
4-5 Data Record ( Max., Min. reading )
* The data record function records the maximum and
minimum readings. Press the " REC. Button " ( 3-3, Fig.
1 ) 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 " ( 3-3, 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 " ( 3-4, Fig. 1 ) for a while, then
the display will show the " REC " symbol only &
execute the memory function continuously.
b)Press the " REC. Button " ( 3-3, 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 " ( 3-4, Fig. 1 ) for a while, 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.
7

5. OFFSET TEMPERATURE ADJUSTMEN
T
Type K THERMOMETER
The instrument is fully calibrated to assure the high quality
measuring performance. Usually it is not necessary to execute
the Offset Temperature Adjustment procedures, however the
measured result could be influenced by using different type of
temperature probes. Under such condition, customer can
easily compensate the temperature value by push button on the
front panel. However, in general conditions, customers are
always not recommended to execute the Offset Temperature
Adjustment Procedures without qualified calibration
equipment.
Offset Temp. Adjustment Procedure
1)Power on the instrument.
2)Connect with a reliable temperature calibrator.
3)Adjust the calibrator and make it 0.0 output.
4)Press the " Hold Button " ( 3-4, Fig. 1 ) and " REC.
Button " ( 3-3, Fig. 1 ) at the same time for around 1
seconds, the upper display and lower display will show the
same value like
0.20.2
8

5)Under the " Hold Button " ( 3-4, Fig. 1 ) and " REC.
Button " ( 3-3, Fig. 1 ) be pressed condition, press
" 蚓,蚌Button " ( 3-5, Fig. 1 ) to add 0.1 or press
" Function Button " ( 3-6, Fig. 1 ) to decrease 0.1 to the
upper digits.
0.00.2
6)When desired value available, release the fingers from the
" Hold Button " (3-4, Fig. 1) and "REC. Button " (3-3,
Fig. 1 ) to finish the Offset Temperature Adjustment
Procedures.
CONSIDERATION
The calibration point is highly recommended at 0.0 or
normal ambient temperature. Please never ever adjust
the offset temperature over this range (0.0 to normal
ambient temperature).
9

6. AUTO POWER OFF DISABLE
The instrument has " Auto Power Off " function in order to
prolong battery life. If there are no buttons to be pressed
for around 10 minutes, the meter will power off automatically.
Disable auto power off function by pressing the " REC. Button "
( 3-3, Fig. 1 ) to get into the " Data Record " function with
a " REC " symbol on the display for long period measurement.
7. RS232 PC SERIAL INTERFACE
The instrument has RS232 PC serial interface via a 3.5 mm
terminal ( 3-10, Fig. 1 ).
The data output is a 16 digit stream which can be utilized
for user's specific application.
A RS232 lead with the following connection will be required
to link the instrument with the PC serial port.
Meter PC
(3.5 mm
j
ack plu
g
) (9W 'D" Connector)
Center Pin.............................. Pin 4 Pin 2 2.2
K
Ground/shield............................Pin 2 Pin 5 resister
10

The 16 digits data stream will be displayed in the
following format :
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Each digit indicates the following status :
D0 End Word
D1 & D8 Display readin
g
, D1 = LSD, D8 = MSD
For example :
If the display readin
g
is 1234, then D8 to D1 is :
0000123
4
D9 Decimal Point(DP), position from ri
g
ht to the left
0 = No DP, 1= 1 DP, 2 = 2 DP, 3 = 3 DP
D10 Polarity
0 = Positive 1 = Ne
g
ative
D11 & D12 Annunciator for Display
蚓
= 01
蚌
= 02 % RH = 04
D13 When send the upper display data = 1
When send the lower display data = 2
D14 4
D15 Start Word
RS232 FORMAT : 9600, N, 8, 1
8. BATTERY REPLACEMENT
1)When the left corner of 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.
11

2)Slide the " Battery Cover " ( 3-7, Fig. 1 ) away from the
instrument and remove the battery.
3)Replace with 9V battery ( Alkaline or Heavy duty type )
and reinstate the cover.
4)Make sure the battery cover is secured after changing the
battery.
9. OPTIONAL PROBES & ACCESSORIES
Type
K
*MeasureRa
g
e : -40
蚓
to 250
蚓
,
Thermocouple -40
蚌
to 482
蚌
.
Probe * Ultra fast response naked-bead
Model: TP-01 thermocouple,
g
eneral purpose
application.
Type
K
*MeasureRan
g
e : -50
蚓
to 900
蚓
,
Thermocouple -50
蚌
to 1650
蚌
.
Probe * Dimension: 10 cm tube, 8 mm Dia.
Model: TP-02
A
Type
K
*MeasureRan
g
e :-50
蚓
to 1200
蚓
,
Thermocouple -50
蚌
to 2200
蚌
.
Probe * Size: Temp. sensin
g
head - 15 mm
Model: TP-03 Dia. Probe len
g
th: 120 mm.
Type
K
*MeasureRan
g
e : -50
蚓
to 400
蚓
,
Thermocouple -50
蚌
to 752
蚌
.
Probe *Dimension: 10 cm tube, 8 mm Dia.
Model: TP-04
RS232 cable RS232 cable for connectin
g
between
UPCB-02 the meter & the computer.
SOFTWARE Windows version application software
SW-U801-WIN applies as the performance of data
lo
gg
in
g
system & data recorder...
12