Comet U0110 User manual

www.cometsystem.com
User‘s Guide
U0110
U0111
U0121
U0122
U0141
U3120
U3121
U3631
U4130
U3430
U4440
U0541
U5841
U6841
U7844
USB Datalogger

2IE-LGR-Uxxxx-01
© Copyright: COMET System, s.r.o.
This User’s Guide may not be copied, and its contents may not be changed
in any way without explicit consent of COMET System, s.r.o.
All rights reserved.
The COMET System, s.r.o. company is continuously developing and
improving its product. COMET System, s.r.o. reserves the right to carry out
technical changes in equipment or product without any previous notice.
Contact address of this device’s producer:
COMET SYSTEM s.r.o.
Bezrucova 2901
756 61 Roznov pod Radhostem
Czech Republic
www.cometsystem.com

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List of contents
SAFETY MEASURES AND UNAUTHORIZED MANIPULATIONS .............6
GUIDE TO INSTALLATION AND USAGE OF THE DEVICE......................7
Installing the datalogger, placing the probes.................................7
Device set-up................................................................................8
Running the device.......................................................................9
Device disposal procedure............................................................9
OPERATING THE DATALOGGER FROM THE KEYPAD........................10
Displaying the device data..........................................................10
Menu Options .............................................................................14
MODELS PRODUCED.............................................................................15
U0110 One-channel thermometer...............................................15
U0111, U0121, U0141 One-, two- or four- channel thermometer for
external probes...........................................................15
U0122 Two-channel thermometer with external probe................16
U3120 Compact thermometer - hygrometer................................16
U3121 Thermometer –hygrometer for external probe ................17
U3430 Compact thermometer –hygrometer - CO2concentration
meter ..........................................................................17
U3631 Compact thermometer –hygrometer with optional external
temperature probe ......................................................18
U4130 Compact thermometer - hygrometer - pressure gauge ....19
U4440 Compact thermometer –hygrometer - pressure gauge -
CO2concentration meter.............................................20
U0541 Two-channel thermometer for external probes with 2 inputs
0 - 10 V.......................................................................21
U5841 Datalogger with 3 inputs 0 - 10 V and 1 binary input........22
U6841 Datalogger with 3 inputs 0 - 20 mA and 1 binary input.....23
U7844 Two-channel binary-input counter....................................24
COMET VISION PROGRAM....................................................................25
SETTING UP THE DEVICE......................................................................26
How to set up the device by means of a program........................26
The device setup from a program (Configuration).......................26
APPLICATION NOTES.............................................................................32
RECOMMENDATIONS FOR OPERATION AND MAINTENANCE...........34
TECHNICAL PARAMETERS....................................................................37
Power supply..............................................................................37
USB communication interface.....................................................38
Measurement, data storage and real time circuitry......................38
Parameters of datalogger inputs.................................................39
Operating and storage conditions ...............................................51
Mechanical properties.................................................................51
ANNEXES................................................................................................52
Annex 1: Selected error messages of the device ........................52
Annex 2: Connection of the Pt1000/E series probe connector ...53
Annex 3: Connection of the Digi/E probe connector (female).....54

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Annex 4: Accuracy of the dew-point temperature measurement 54
Annex 5: Connecting block ........................................................54
Introduction
This datalogger is designed for autonomous measurements andrecording of
physical and electrical data, with the data recording interval from 1 s to 24 h.
The inputs and ranges of quantities to be measured are determined by the
model type the user has bought. The user cannot modify them. This portable
device can be mounted in a fixed-position. To set up datalogger, a PC with
a USB interface is needed.
This device allows:
- to measure and process input data coming from internal or external
sensors, binary inputs, counters and voltage or current inputs.
- to detect and log minimum and maximum values (existing since their last
manual resetting) of each quantity,
- to display the measured values on an LCD display. Some features can be
controlled by two push buttons situated next to the display (device
switching off and on, deactivation of alarm signalling, Min/Max value
resetting),
- to store an autonomous chronological record of measured values in
internal non-volatile memory. The values to be collected can be measured
at the instant of recording or as average or min/max values detected
during the recording interval. Recording can be performed continuously or
at the alarm time only. The recording mode can be also set optionally as
non-cyclic to stop at the memory filling up, or as cyclic. In this mode the
originally recorded values will be overwritten by fresh ones after the
memory unit getting filled up.
- to set up two alarm signalling limits for each quantity to be measured. The
alarm signalling canberealised visually, optionally by a symbol appearing
on the display or by a short blink of an LED, or acoustically
- to be supplied in autonomous manner from an internal primary lithium
battery, CO2sensor models are powered by an internal Li-Ion accupack
that can be charged using a conventional USB charger. Other models can
not be charged.
- to communicate with a computer by means of a USB interface (all device
settings, recorded data downloading, and online monitoring). To
communicate, the datalogger utilises the HID USB standard, which does
not require additional controllers to be built into the PC.

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General view of a Uxxxx series datalogger (U0141 model):
Dimensional drawing:
U0110 U3120, U4130 U3430, U4440
U0111, U0121, U0122 U3631 U0541, U5841
U0141, U3121 U6841, U7844

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Safety measures and unauthorized manipulations
Read the following safety directions carefully before putting the device into operation.
Follow these instructions when using the device!
•Operating and storage conditions. Observe the recommended operating and storage
condition asquoted in theTechnical parameters. Models with a CO2sensor containing aninternal
lithium-ion accupack should not be exposed to temperatures above 60 °C Do not expose the
device to direct radiation of heat sources and sun.
•Fire and explosion hazard. It is not allowed to use this datalogger within hazardous areas,
especially those endangered by a potential explosion of combustible gases, vapours or dust.
•Device cover. Do not operate the datalogger without the cover. Proceed always exactly
according to instructions that are given later in this User’s guide.
•Aggressive surroundings. Do not expose this device to any kind of aggressive surroundings,
to chemicals or mechanical shocks. Use soft tissue for cleaning. Do not apply solvents or similar
aggressive agents.
•Battery damage. Should the battery casing get damaged or should the whole device get
destroyed, carry it outside thefire, high temperature or water affected area to a safe fire-protected
place. Protect yourself and the environment against escaping gases and against being soiled
with the battery electrolyte.
•Failures and servicing. Do not try to repair the device yourself. If the device shows signs of
unusual behaviour, screw off the rear cover to remove battery or disconnect the accupack
connector. Avoid the removed battery contacting any metallic parts. Any repairs, including
accupack exchange by models with a CO2sensor, may be carried out by suitably instructed
service personnel only. Contact the distributor you have bought the device from.
•Accumulator charging. Only models with internal CO2sensors can be charged. Use the
charger that has been recommended to charge the accumulator. During the charging procedure
the device has to be located in an indoor room with a relative humidity (RH) up to 85 %. The
charging will proceed at an indoor temperature ranging between 0 °C and +40 °C.
•Protection against water and dust. The device will be protected against water and dust only
when all connectors are duly tightened, and the USB connector is provided with a closing cap.
The input connectors that are not used have also to be provided with closing caps.
•Recommended accessories. Use only accessories that are recommended by the producer

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Guide to installation and usage of the device
Installing the datalogger, placing the probes
•Choose a suitable location for installing the device - bear in mind that
the environmental conditions should be concordant with the Operating
conditions. Do not situate the device near sources of electromagnetic
interference.
•Recommended working position - for models with internal humidity
sensor (U3120, U3631, U4130, U3430 and U4440) with USB connector
down, for others any:
•This device may be operated as a portable one. In thiskind of operation
avoid the device falling. Try to maintain the proper working position.
•You can screw the device on the wall or some other solid base

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•You can fix the device on the wall with the aid of a lockable holder
LP100 (optional accessory)
•Probe installation and cable routing - observe the installation
instructions, realize the recommended operating positions, avoid electric-
power distribution systems. See the chapter „MODELS PRODUCED“ for
more information.
•For the U3120, U3631, U4130, U3430 and U4440 device remove any
transport transparent foil from the front panel (otherwise it would prevent
air access to internal sensors)
Device set-up
•Connect the appropriate probes and signal leads to the device. For
more information refer to the chapter „MODELS PRODUCED“.
•Install the COMET Vision software into your computer - is available
for free on the address www.cometsystem.com.
•Run COMET Vision software
•Connect the device to the computer - on the datalogger side, use a
USB cable provided with a USB-C terminal.
•Setting up the device - with the aid of the COMET Vision program, set
up the device identification, the names of the points to be measured, the
recording mode, the alarms and there signalling.
•For more information, refer to the chapter „SETTING-UP THE DEVICE“.

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Running the device
•After the set-up - Disconnect the device from the computer and close the
USB connectorwith a closing cap. Check that all connectors are tightened
properly. The device may be operated with a permanently connected USB
cable. In this case the ingress protection will be reduced to IP 20.
•Operating the device by means of keys - In the main display mode you
can switch over between individual channels and the display mode
Current / minimum / maximum values by means of the keys. By pressing
a certain key combination, you will enter a menu in which you will be able
to switch the device on or off, to delete the Min/Max values and to disable
the alarm signalling. For more information, refer to the chapter
„OPERATING THE DATALOGGER FROM THE KEYPAD“.
•Charging the batteries - applies only to models with a CO2sensor
(contains Li-Ion accupack), other devices cannot be charged. An internal
charger will be activated immediately after connecting the USB charger or
after connecting the datalogger to the computer. The datalogger contains
an intelligent charging circuitry evaluating the battery condition and
internal temperature. Charging time depends on the current battery
discharge status The battery charging process will be initiated only in the
case that the battery voltage is low and the internal temperature ranges
between 0 °C and 40 °C. Use the recommended charger type only. During
the charging period the ingress protection is reduced to IP 20; therefore,
do the charging under room (or similar) conditions only. If the battery is
very low, the charging process may be terminated with an error message.
In such a case contact the datalogger vendor to apply for battery
replacement. During the battery charging period the internal temperature
of the device may be slightly raised, which can, for a short period of time,
adversely influence the measurement values of the internal sensors.
Therefore, the charging speed with the power on is deliberately slowed
down to avoid excessive measurement influence. If you want to charge
the device as soon as possible, turn it off first. When the device is turned
off, the fast charging mode is automatically activated. Fully charged
battery is indicated on the display of the device usually within 6 hours.
•Maintenance and regular checks - for a reliable functioning of the device
it is advisable to perform its regular check-ups. For more details refer to
„RECOMMENDATIONS FOR OPERATION AND MAINTENANCE“.
Device disposal procedure
Screw-off the rear cover of the datalogger, take out the battery. The device
is disposed of as electronic waste. The battery must be disposed of as
hazardous waste.

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Operating the datalogger from the keypad
Displaying the device data
Data memory occupancy - this display section offers information about the
current condition of the free space existing in the data memory. The blinking
of the Memory symbol indicates that the preset memory occupancy limit has
been exceeded. This limit can be set up in the device’s configuration. Several
actions can be assigned to it (optical and acoustic signalling).
The memory occupancy is about 75 %, the device is in the non-
cyclic recording mode, i.e. the recording will be stopped as
soon as the memory capacity is full.
The memory occupancy about 75 %, the device is in the cyclic
recording mode, i.e. as soon as the memory capacity is full, the
oldest data will be overwritten.
The memory occupancy 100 %, the device is in the cyclic
recording mode. The preset memory occupancy limit has been
exceeded (The Memory symbol is blinking).
Record status - offers information on whether the recording is ON and
whether it is just running.