Wuntronic COMMETER D3631 Manuel utilisateur

COMMETER D3631

Digital thermohygrometer and datalogger with external temperature probe

Instruction manual

ie-com-d3631-08

Manual for use of thermohygrometer and datalogger COMMETER D3631 with

external temperature probe

Instrument is designed for measurement of temperature and relative humidity (attached sensors)

and temperature from an external probe. It enables to display the dew point temperature and the

difference between external temperature and dew point temperature. Measured values are displayed

on a dual line LCD display. Measured values can be stored in programmable interval into internal

non-volatile memory and transfer anytime to a PC. Temperature is measured by RTD sensor

Ni1000/6180ppm. Instrument compares measured values of temperature, humidity, dew point and

temperature difference with two adjustable levels for each measured quantity. Breaking the level is

indicated by blinking the proper value on display and by audio indication (switchable). Instrument

is equipped with minimum and maximum memory and Hold function. Minimum and maximum

values and Hold value are possible to display on the LCD anytime.

Technical parameters:

Parameters of measurement:

Ambient temperature:Range of measurement: -10 to +60 °C

Resolution: 0.1 °C

Accuracy: ±0.4 °C

External temperature probe (RTD Ni1000/6180ppm type):

Range of measurement: -50 to +250 °C

Resolution: 0.1 °C

Accuracy of the input without probe: ±0.2 °C from -50 to

+100°C, ±0.2% from reading from 100 to 200°C

Accuracy including probe: ±0.4 °C from -50 to +100°C,

±0.5% from reading from 100 to 200°C

Humidity: Range measurement: 5 to 95 %RH (reading is temperature compensated at all

range)

Resolution: 0.1 %RH

Accuracy: ±2.5 % RH at the range of 5 to 95 %RH at 23°C

Dew point temperature (calculated from temperature and humidity):

Range: -50 to +60 °C

Resolution: 0.1 °C

Accuracy: ±0.5 °C at the range of 30 to 95 % RH

Response time (air flow approximately 1 m/s):

ambient temperature: t63 < 35 s, t90 < 60 s (temperature step 20 °C)

relative humidity: t63 < 30 s, t90 < 60 s (humidity step 30 %RH, at constant temperature)

Measuring interval and display reading refresh: approximately 0.7 s in FAST mode

0.7 to 5 s in dynamic mode

Logging interval (in automatic mode): 10s to 24hours

Memory capacity: for manual logging 1000 sets of all input quantities

for non cyclic automatic logging total 5416 values

for cyclic automatic logging total 5198 values

The above specified numbers are are maximum possible. Capacity is slightly lower if

logging was interrupted by communication with computer, by stopping logging or

switching OFF the instrument

Communication with computer: RS232 (serial port)

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Real time clock: adjustable from computer, integrated calendar including leap years

Accuracy of the real time clock: <200ppm (i.e. 0.02%, 17.28 seconds in 24 hours)

Power: battery 9V or ac/dc adapter 12V with NiCd accumulator 9V

Average current consumption: 0.2 to 0.8 mA (depending on operation mode)

IP protection: IP20

Operation conditions:

Ambient temperature range: -10 to +60 °C

Ambient relative humidity range: 5 to 95 %RH

Outer characteristics in accordance with EN 33-2000-3: normal environment with

characteristics AD1, AE1, AF1, AG1, AH1, AK1, AL1, AN1, AP1, AQ1, AR1, AS1,

BA1, BE1

Not allowed manipulation: it is not allowed to touch sensors under the cover to avoid

sensors damaging or to effect calibration.

Storing conditions: temperature -10 to +60 °C relative humidity 5 to 95 %RH

Dimensions: 141 x 71 x 27 mm

Weight including battery: approximately 150 g

Battery life depends on selected display refresh mode (see below). In FAST mode display is

refreshed in shortest possible interval with highest current consumption. In dynamic mode display

is refreshed in interval up to 5 s in case measured values remain stable. Refresh interval is shortened

to approximately 0.7 s only if measured values change. Current consumption in this mode in usual

operation is lower, battery life is up to 4 times longer. The FAST mode is recommend to use only in

cases, when slower display response is not acceptable.

Battery voltage drop below 7 V is indicated with blinking of "BAT" in default display mode

(displaying of actual values) and FAST mode is automatically cancelled to save the battery. At the

same time audio indication of alarms is automatically switched OFF.

If instrument is supplied from external ac/dc adapter, internal 9V battery should be replaced with

rechargeable NiCd accumulator. In usual operation from adapter accumulator is charged only with

small current. If accumulator is totally discharged, its full charging in instrument takes

approximately 100 hours. Instrument with accumulator is not recommended for permanent

operation without ac/dc adapter plugged. Accumulator works only as a standby source in case of

power mains failure.

Switching ON and OFF the instrument

Switch ON the instrument by pressing ON/OFF key. After switching ON

the instrument all symbols on the LCD are displayed. If the ON/OFF key is

being held pressed, all LCD symbols are displayed till the key is released.

In usual operation instrument then starts the measurement mode and actual

measured values are displayed.

If a voltage drop below critical limit occurred since last adjustment of

internal real time clock or battery disconnection longer than approximately

1 min, new instrument initialization is performed (reading INIT could be

displayed up to 12 s !).

After initialization is finished instrument starts to display internal time to

warn to incorrect internal time. New time adjustment is performed by the

computer. Press MENU key to switch instrument to actual measurement

mode.

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It is possible to switch OFF the instrument anytime, all instrument setting is kept saved. If

automatic logging was active before instrument is switched OFF, logging will continue with the

same parameters after new switching ON.

Displaying of actual measured values

In this mode is instrument anytime after switching ON. It is possible to enter this mode from

other modes by pressing or by repeating pressing of MENU key.

Ambient temperature in °C is displayed on the upper LCD line (symbol

INT) and relative humidity in %RH is displayed on the lower LCD line.

Press DISPLAY key to display other readings - external probe temperature

in °C (symbol EXT) and dew point temperature on lower line (°C DP). If

external probe is not connected properly or temperature is out of measuring

range, symbol „--„ is displayed.

Press DISPLAY key to display other readings - external probe temperature

in °C (symbol EXT) and difference between external temperature and dew

point temperature (symbol DIF). The difference is defined as t dif = t ext -

t dp.

Function HOLD (storing of actual measured values) and minimum a maximum memory

Press HOLD key in the default mode (displaying of actual measured value) to store actual

measured values to internal memory (indicated by short beep). Anytime it is possible to display

stored values from MENU (see below). Each pressing of the HOLD key in the default mode causes

values stored in HOLD memory are replaced with actual ones.

Switched ON instrument permanently updates minimum and maximum

memory of each measured values. Press MIN key (resp. MAX key) in the

default mode to display minimum (resp. maximum) reading. These

minimum and maximum readings are indicated by MIN (MAX) symbols on

the LCD. Press DISPLAY key to display minimum (resp. maximum) value

of other values. Pressing MIN (MAX) or MENU key again to return to

default mode. Minimum and maximum memory is cleared from menu after

confirmation selection CLR (see below). Values in HOLD, MIN and MAX

memories remain stored even after instrument is switched OFF.

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Functions and settings available from menu

Press MENU key to enter mode of viewing menu items one by one. Press arrow keys up and

down to list all menu items. Press MENU key again to return to default mode (displaying of actual

measured values).

First selection is START/STOP logging. There are two possibilities: if

logging is stopped, logging start is offered (symbol Strt = START), if

logging is in progress already, logging stop is offered (reading STOP). Press

ENTER key to confirm one of two possibilities. Notice: if battery voltage is

low it is not possible to start logging.

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Press ENTER key to enter alarm setting mode (see below).

This item indicates if audio signaling of alarm indication is switched on

(On) or switched off (OFF). Press ENTER key to change actual setting.

Notice: if the battery voltage is low, audio indication is out of operation to

reduce current consumption independently on this selection.

Clearing of minimum and maximum memory of all values. Memory is

cleared after pressing ENTER key. Clearing is confirmed by reading YES

on the LCD lower display.

Press ENTER key to display values stored in the HOLD memory. Press

DISPLAY key to display other stored values (dew point temperature). Press

MENU key to leave this mode.

Time (hour and minute) in internal real time clock of the instrument. Press

ENTER key to check date (day, month, year).

Battery voltage of partially loaded battery is displayed. This value illustrates

battery condition.

Display refresh mode is indicated. In the FAST mode refreshment is fastest

with regular interval approximately 0.7 s. In the dynamic refresh mode

(DYN.) each 15 s refresh interval of display is doubled to maximum 5 s if

measured values are stable. If measured values change, refresh interval

decreases to approximately 0.7 s. This dynamic mode prolongs battery life

significantly. Select the desired mode by ENTER key. Notice: if battery

voltage is low, the FAST mode is out of operation to reduce current

consumption independently on this selection.

Each pressing of ENTER key causes displaying information on storing

interval, actual logging mode (MODE), memory occupation (MEMO - in

automatic logging mode memory occupation in % is displayed, in manual

mode the number of logged values is displayed) and service information on

software version (upper LCD line) together with instrument configuration

on the LCD lower line.

Alarm indication and setting

It is possible to set lower and upper limit for each measured quantity.

Breaking of the limit is indicated by blinking of the appropriate value on the

display. If a new alarm was indicated (i.e. it was not active in the previous

measurement), display starts to display the value out of limits. If at least one

alarm is active, audio indication can be activated, if menu AUDI "On" is

selected (see setting described above). Alarm activation of each value can

be disabled by setting lower alarm limit of the desired value up to its

maximum. This is indicated by OFF reading at the position of numeric

value. Value of upper limit of the same alarm is indifferent

To set alarms press MENU key, select ALAR from menu items and confirm

by pressing ENTER key.

Reading ALLO indicates adjusted lower alarm limit (here air temperature).

Set the desired value by means of the arrow keys. Press and hold the arrow

key UP to make value increase fast. Press and hold the arrow key DOWN to

make value decrease fast. Release the arrow key and press ENTER to

confirm new limit.

Reading ALHI indicates adjusted upper limit of the same alarm (here air

temperature). Set the desired value in the same way as in above lower limit.

If needed it is possible to get back to lower limit setting of the same alarm

by pressing DISPLAY key. Press ENTER key to confirm new upper limit.

Then you are offered to set alarm of other input value (here relative

humidity). The procedure is the same as the above temperature limit setting.

Alarm activation of each value can be disabled by setting lower alarm limit

of the desired value up to its maximum. This is indicated by OFF reading at

the position of numeric value. Value of upper limit of the same alarm is

indifferent.

It is possible to leave the alarm setting mode by pressing MENU key. New

adjusted limits up to pressing MENU key are stored in memory.

After pressing ENTER key it is possible to set alarm limits for dew point

temperature.

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Logging mode

In logging mode measured values are stored to instrument internal memory. Memory is non

volatile, i.e. if battery voltage drops or battery is disconnected, stored data will not be lost.

Instrument can work in two logging modes:

automatic mode - actual measured values are stored to memory in adjustable time interval. Storing

of the first value is synchronized with internal real time clock , so the memorizing is performed

at sharp multiples of minutes, hours and days. E.g. if the storing interval is 15 minutes value will

be stored each 15., 30., 45. a 00. minute and zero second in each hour, if interval is 3 hours

values will be stored in 00:00:00, 03:00:00, 06:00:00. etc. It means after starting automatic

logging instrument waits for the nearest integer multiple of time and then stores the first value.

manual mode - actual measured value is stored after pressing ENTER key (instrument should be in

default mode of displaying actual measured values). Each storing is indicated by a short beep and

position of the record in memory is displayed (reading MEMO with the record serial number). In

this mode it is possible to store max. 1000 set of records.

It is possible to select one of the three logging modes (MODE):

- automatic non cyclic logging, when logging stops after fulfilling the memory. Reading MEMO

FULL is displayed (reading disappears after pressing any key)

- automatic cyclic logging, when after fulfilling the memory oldest data are replaced with new

values

- manual logging, designed for manual storing of measured values by ENTER key

Logging modes are not mutually compatible and after changing logging mode memory of the

instrument should be cleared.

Logging in progress will always be interrupted by instrument connection to the computer or

switching OFF the instrument by ON/OFF key. Logging in progress will be automatically stopped

if battery voltage below 7 V is indicated by the instrument. This prevents to log values effected by

low battery voltage.

Logging start from instrument keyboard

Start logging by confirmation of the menu item START (symbol Strt) by

pressing ENTER key.

Notice: it is not possible to start logging if low battery voltage is indicated.

Instrument offers the possibility to clearing the instrument memory (ERAS).

If you do not wish to clear the memory before new logging start, confirm

selection ERAS NO by pressing the ENTER key.

Now instrument displays adjusted storing interval. To modify the storing

interval use arrow keys. Interval 10 sec is displayed as MIN 0:10, minute

intervals are displayed as MIN x:00 and hour intervals as x:Ho. Confirm

adjusted interval by pressing ENTER key. Notice: if manual logging mode

is selected, this menu item is skipped (there is no interval adjustment).

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Logging is started and instrument returns to default mode displaying actual

values. Logging in progress is in default mode indicated with reading LOG

on display. If memory is filled over 90 %, symbol LOG is blinking (only in

automatic logging).

Logging start with clearing memory and logging mode selection

It is possible to clear memory only if logging is stopped. Modification of logging mode is

enabled only after memory is cleared. Clearing of memory is optional part of the above procedure

logging START. Notice: there is no way to "undelete" the cleared data!

If it is needed to clear the memory before logging start, first it is necessary

to select menu item logging START (symbol Strt) and confirm by pressing

ENTER key.

Notice: if low battery voltage is indicated, it is not enabled to start logging

nor to clear the memory

Now instrument offers possibility to clear the memory (ERAS). Default is

selection ERAS NO. If clearing of the memory is needed use the arrow keys

to select ERAS YES and confirm by pressing ENTER key.

Clearing procedure is in progress. It takes approximately 16 s and the

duration is indicated by displaying of already cleared memory in % (digits 0

to 100).

After memory is cleared it is possible to select one of three logging modes

(MODE) by using arrow keys (non cyclic logging is indicated by symbol

n.CYC, cyclic logging by symbol CYCL and manual logging by symbol

Man). If manual logging mode is selected, after confirmation by ENTER

key logging is active. In automatic logging mode (i.e. cyclic or non cyclic)

last applied storing interval is offered to confirm or modify. See above

procedure.

Logging stop from keyboard

Logging stop is enabled by confirmation of menu item STOP by pressing

ENTER key.

Reading STOP NO is displayed to enable logging stop. Use arrow keys to

modify to STOP YES. Logging is still in progress.

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Logging is stopped after confirmation selection STOP YES by pressing

ENTER key. Instrument then returns to default mode of displaying actual

values.

Connection of the instrument to a personal computer

For connection of the instrument to a personal computer is designed the communication cable

(included in delivery). Connect the cable with 9pin connector Canon to computer serial port

(COM1 or COM2). Connect cable other side (JACK 3.5mm) to the instrument. During time

instrument is connected to the computer, there is a reading PC on the LCD display and

measurement nor logging is interrupted. Keyboard of the instrument is disabled with the exception

of ON/OFF key.

Result of reading data to the computer is a protocol of measurement including instrument serial

number and a table of logged values with date and time.

After disconnection of the communication cable reading PC disappears and instrument is in the

default mode as after switching on by the ON/OFF key. If logging was in progress before

connection to the computer, logging will continue with the same parameters after disconnection of

the cable (if new setting of logging was not performed during communication - including logging

stop).

The most power from the battery is needed during communication with the PC - let the

communication cable plugged-in the instrument only for time necessary for data transfer! If

you let instrument plugged-in the computer longer than approximately 5 minutes with no

communication, instrument will be automatically switched OFF.

Battery replacement

If battery voltage is low logging mode of the instrument is disabled. Low battery voltage is

indicated on the display with blinking reading "BAT". It is necessary to replace it with new one as

soon as possible. Battery is located under small cover on the instrument lower side. It is absolutely

necessary to replace battery with instrument switched OFF, otherwise internal time and setting of

d.REF. and AUDI (from menu selections) and data in memory HOLD, MIN and MAX will be lost.

For the same reason do not disconnect the battery for longer than 1 minute even if instrument is

switched OFF. If it happens (or if battery is totally discharged), it is necessary to set time from the

computer and in appropriate menu selection set again LCD refreshment mode (d.REF.), alarm audio

indication (AUDI) and clear the minimum and maximum memory (CLR).

The PC software for the instrument

Installation of Windows software

Software is designed for computer with operational system Windows, version Windows 95 or

newer. There is approximately 5MB free space required on the hard disk. A free serial port is

required for communication with the instrument.

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Start the installation from Control Panel of Windows (Start - Settings - Control panel) -

Add/Remove programs, button Install. You will be suggested by Windows to insert first installation

diskette. After pressing Next button installation of software for COMMETER will start.

After installator start a window with License agreement occurs. Read the license agreement

carefully please. All text is possible to view by cursor movement keys up and down or PageUp,

PageDown keys. If you agree with the License agreement, press the Yes button. If you do not agree,

press No and installation will be cancelled.

In next step of installation it is possible to select path, where software will be install to. If you

agree with offered path, press Next, otherwise change the path by button Browse.

In the next window you can select folder in Start menu where software will be enable to run

from. If you agree with offered folder, press Next.

Now installation itself of software to hard disk will be carried out. Wait please for installator to

perform all necessary steps. During installation you will be invited to insert second diskette.

In the end message of successful installation will occur. Quit the Installator by button Cancel.

Now it is possible to run software from menu Start - Programs - Comet - CommDx.

Software for Windows - instruction manual

Communication with the instrument

First connect communication cable to computer serial port. Plug second connector of

communication cable to the instrument and start data transfer to the computer (selection from menu

File - from datalogger, key F4 or button on the toolbar). Software will find connection with the

instrument and transfer data. Computer offers name of the file with measurement to be created on

disk. Implicitly files are stored to files with extension *.msb. File name is generated from year,

month and day of file creation and serial number in the day of creation. It is possible to use

different file name and path. After name confirmation it is possible to insert short description with

e.g. conditions or location of measurement which is stored together with measured values.

Viewing of measured values

Measured values can be read directly from datalogger or from formerly created file on disk

(command File - From disk, key F3). After reading a table of measured values occurs. Detailed

information on file is available from context menu - menu occurs after clicking right mouse button

on the position of table. In context menu function export to text or database format is available.

Graph with measured curves it is possible to by command Display - Graph or button on the toolbar.

Graph mode enables to modify setting of axis, color of curves etc. Detailed information on software

functions is available in help.

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