Comet Commeter C0111 User manual

COMMETER C0111
Digital thermometer for RTD Ni1000/6180ppm probe
Instruction manual

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Manual for use of thermometer COMMETER C0111 for Ni1000/6180 probe
Instrument is designed for measurement of temperature from RTD Ni1000/6180ppm probe.
Measured values are displayed on a dual line LCD display. Temperature is measured by RTD
sensor Ni1000/6180ppm. Instrument compares measured with two adjustable levels. 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:
Range of measurement: -50 to +250°C (can be limited by connected probe parameters)
Resolution: 0.1 °C
Accuracy (without probe): ±0.2 °C at the range of -50 to +100°C
±0.2% from reading at the range of +100 to +250°C
Accuracy (including the probe): ±0.4 °C at the range of -50 to +100°C
±0.5% from reading at the range of +100 to +250°C
Type of compatible probe: with RTD sensor Ni1000/6180ppm and Cinch connector
Measuring interval and display reading refresh: approximately 0.7 s in FAST mode
0.7 to 5 s in dynamic mode
Power: battery 9V or ac/dc adapter 12V with NiCd accumulator 9V
Average current consumption: 0.08 to 0.3 mA (depending on operation mode)
Operation conditions:
Ambient temperature range: -30 to +65 °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
Storing conditions: temperature -40 to +85 °C relative humidity 5 to 95 %RH
Dimensions: 141 x 71 x 27 mm
Weight including battery (without the probe): 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.

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Switching ON and OFF the instrument
Connect the external probe to the connector before switching ON 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 instrument is ON, do not disconnect or connect
the probe to prevent storing of incorrect value to minimum and maximum
memory.
It is possible to switch OFF the instrument anytime, all instrument setting is kept saved.
Display of actual measured temperature
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. If the external probe is not connected
properly or probe is out of measuring range, reading -- is displayed on the upper LCD line.
Temperature in °C is displayed on the upper LCD.
Function HOLD (storing of actual measured temperature) and minimum a maximum
memory
Press HOLD key in the default mode (displaying of actual measured temperature)
to store actual measured value to internal memory (indicated by short beep).
Anytime it is possible to display stored value from MENU (see below). Each
pressing of the HOLD key in the default mode causes value stored in HOLD
memory is replaced with actual temperature.
Switched ON instrument permanently updates minimum and maximum memory of
temperature. 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. 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.
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).

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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 temperature. Memory is cleared
after pressing ENTER key. Clearing is confirmed by reading YES on the LCD
lower display.
Press ENTER key to display value stored in the HOLD memory. Press MENU
key to leave this mode.
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.
Pressing of ENTER key causes displaying service information on software
version (upper LCD line) together with instrument configuration on the LCD
lower line.

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Alarm indication and setting
It is possible to set lower and upper limit for measured temperature. Breaking of
the limit is indicated by blinking of the value on the display. Alarm activation can
be disabled by setting lower alarm limit 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 ALARM key.
Reading ALLO indicates adjusted lower alarm limit. 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. 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.
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.
Commeter instruments passed the following electromagnetic compatibility (EMC) tests:
radiation: EN 55022 class B
immunity: EN 61000-4-2 (levels 4/8 kV, class A)
EN 61000-4-3 (intensity of electromagnetic field 3 V/m, class B)
EN 61000-4-4 (levels 1/0,5 kV, class A)
EN 61000-4-6 (intensity of electromagnetic field 3 V/m, class B)
EN 61000-4-11 (class A)
EN 61000-4-5 (class A)