COMET U0111 Dataloggers User Guide

: June 3, 2024
: COMET

Table of Contents

PRODUCT DESCRIPTION
INSTALLATION AND OPERATION
SAFETY INSTRUCTIONS
Technical specifications
Documents / Resources

U0111 Dataloggers
User Guide
Dataloggers – Uxxxx family
QUICK START MANUAL
U0111 • U0121 • U0122 • U0141 • U0141T • U2422 • U3121 • U3631

PRODUCT DESCRIPTION

The dataloggers Uxxxx with connectors for external probes connection are designed for measuring and recording physical and electric quantities with an adjustable logging interval from 1 second to 24 hours. The measured values, or the average values and min/max values over a recording interval are stored into the internal non-volatile memory. The data logging mode can be cyclic (when the data memory is completely full, the oldest data are overwrite by the new ones), or non-cyclic (the recording will stop once the memory is full). The device also allows to the evaluation of alarm states – exceeding the limit of the measured value or falling below this limit, exceeding the limit of memory filling, technical defects of the instrument or probes. The alarm signalling can be realised visually, optionally by a symbol appearing on the display or by a short blink of an LED, or acoustically. The data recording can be performed continuously or only when an alarm occurs. The devices are powered by internal a replaceable lithium battery (U2422 is powered by internal Li-Ion battery). Device setting, recorded data downloading and online monitoring is carried out using the computer with the COMET Vision software installed (see www.cometsystem.com). The USB interface is used to communicate with the computer.

Device	Measured values	Construction
U0111	Te	Connector for external Pt1000/E probe connection
U0121	2 x Te +Tdiff + 1x cc	Connectors for up to four external Pt1000/E

probe connection
U0122| Ti + Te + Tdiff + 1x cc| Internal temperature sensor and connector for external Pt1000/E probe connection
U0141| 4 x Te + 2x cc| Connectors for up to four external Pt1000/E probe connection
U0141T| 4 x Te + 2x cc| Two part WAGO terminal block for up to four external Pt1000/0 wire probe connection
U2422| P + CO2| Internal barometric pressure sensor and connector for external CO2 probe connection
U3121| Te + RH + Td + 1x cc| Connector for Digi/E probe connection
U3631| Ti + Te + RH + Td + Tdiff + 1x cc| Internal temperature/humidity sensor and connector for external Pt1000/E probe

Ti, Te…Temperature, RH…Relative humidity, Td…Dew point temperature, Tdiff … temperature difference , P… Barometric pressure, CO2 …CO2 concentration cc… calculated channel, ie the channel that can be used to calculate and record the value calculated from the measured quantities according to the selected formula

INSTALLATION AND OPERATION

Fasten the device on the wall with two screws or insert it into the wall holder LP100 (optional accessory). Working position of the device is arbitrary with the exception of the U3631, which place the USB connector facing down. Dataloggers can also be operated as a portable, in this case protect them from falling and try to adhere to the working position.

Please pay attention to the device and probes mounting. Inappropriate selection of the working position and the measurement location may adversely affect the accuracy and long-term stability of the measured values.
Connect the probes to the device (maximum cable length of the Digi/E probe should not exceed 30 m, recommended maximum cable length of the Pt1000 probes is 15 m, maximum cable length of the CO2 probe is 4 m)
The devices with all cables should be located as far as possible from potential interference sources

Set-up the device

Device setup can be performed using the computer with the Windows 7 operational system or higher. Minimum HW requirements are 1.4 GHz processor and 1 GB memory.
Install the COMET Vision software into computer (the program is available free of charge at www.cometsystem.com)
Connect the datalogger to the computer. Use an USB cable with USB-C connector (max. cable length 3 m).
Click on the Configuration button. The device configuration will be downloaded and you can change the settings of some items
Save the new configuration into the device and disconnect the device from the computer (close USB connector with a closing cap)

Operating the device from the keypad

Press and hold the lower key. After the light up the row with menu items, release the key and briefly press the upper key.
Press the upper key to scroll through the menu items (device turning On/Off, deleting the Min/Max values in the device, …)
Press the lower key to confirm (SET)

The devices do not require special maintenance. We recommend verifying the measurement accuracy regularly by calibration.

SAFETY INSTRUCTIONS

– Installation, electrical connection and commissioning should only be performed by qualified personnel in accordance with applicable regulations and standards
– The datalogger U2422 is equipped with an internal Li-Ion battery. Observe the recommended operating and storage condition. Should the battery casing get damaged or should the whole device get destroyed, carry it outside the fire, 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.
– The U2422 battery must be charged at an internal temperature of the device in the range 0°C to +40°C (the device has to be located in an indoor room with a relative humidity up to 85%). Fast charge mode can be run by turning off the device.
– Devices contain electronic components, it needs to liquidate them according to currently valid conditions.
– To complement the information in this data sheet read the manuals and other documentation, which are available in the Download section for a particular device at www.cometsystem.com

Technical specifications

Device type| U0111| U0121 U0141| U0141T| U0122| U3121| U3631| U2422
---|---|---|---|---|---|---|---
Power batteries| Lithium battery 3.6 V| Lithium battery 3.6 V| Lithium battery 3.6 V| Lithium battery 3.6 V| Lithium battery 3.6 V| Lithium battery 3.6 V| Lithium battery 3.6 V
Recording interval| (1-2-5-10-15-30)s (1-2-5- 10-15-30) min. (1-2-3-4-6-8-12-24)h
Memory capacity| 500 000 values in non-cyclic record mode + 350 000 values in cyclic record mode
Internal temperature measuring range| —| —| —| —| —| —| —
Accuracy of internal temperature measurement| —| —| —| —| —| —| —
External temperature measuring range| -90 to +260°C| -90 to +260°C| -90 to +260°C| -90 to +260°C| -90 to +260°C| -90 to +260°C| -90 to +260°C
Accuracy of external temperature measurement| +0.2°C| +0.2°C| +0.2°C| +0.2°C| +0.2°C| +0.2°C| +0.2°C*
Relative humidity measuring range (without condensation)| —| —| —| —| —| —| —
Accuracy of relative humidity sensor| —| —| —| —| —| —| —
Dew point temperature measuring range| —| —| —| —| —| —| —
Accuracy of dew point temperature measurement| —| —| —| —| —| —| —
Barometric pressure measuring range| —| —| —| —| —| —| —
Accuracy of barometric pressure measurement at 23°C| —| —| —| —| —| —| —
Range and accuracy of COz concetration measurement| —| —| —| —| —| —| —
Recommended calibration interval| 2 years| 2 years| 2 years| 2 years| 2 years| 2 years| 2 years
Protection class – case with electronics /CO2 probe / T+RH sensor| IP67 /—/—| IP67 /—/—| IP20 /—/—| IP67 /—/—| IP67 /—/—| IP67 /—/—IP30| IP67 /IP65—/—
Temperature operating range of the case with electronics| -30 to +70°C| -30 to +70°C| -30 to +70°C| -30 to +70°C| -30 to +70°C| -30 to +70°C| -30 to +70°C
Temperature operating range of the external CO2 probe| —| —| —| —| —| —| —
Relative humidity operating range (without condensation)| 0 to 100%RH| 0 to 100%RH| 0 to 100%RH| 0 to 100%RH| 0 to 100%RH| 0 to 100%RH| 0 to 100%RH
Recommended storage temperature| -20 to +45°C| -20 to +45°C| -20 to +45°C| -20 to +45°C| -20 to +45°C| -20 to +45°C| -20 to +45°C
Recommended storage relative humidity| 5 to 90 %RH| 5 to 90 %RH| 5 to 90 %RH| 5 to 90 %RH| 5 to 90 %RH| 5 to 90 %RH| 5 to 90 %RH
Electromagnetic compatibility according to| EN 61326-1| EN 61326-1| EN 61326-1| EN 61326-1| EN 61326-1| EN 61326-1| EN 61326-1
Weight (without the probes)| 120g| 120g| 120g| 120g| 120g| 120g| 120g

COMET U0111 Dataloggers

CQ2 probe range 0 – 10 000 ppm
¢ accuracy at 23 °C and pressure 1013 hPa:
+(100 + 0.05 x MV) [ppm] ¢ temperature dependence at range -20 to +45°C:
+(1 + 0.001 x MV) [ppm/°C] MV … measured value [ppm]

the accuracy of the device without probe in the range to +100 °C (in the temperature range of +100 to +260 °C is accuracy +0,2 % of measured value) ™ at temperature 23 °C in the range of 0 to 90 %RH (hysteresis +1 %RH, non-linearity +1 %RH
“* at ambient temperature T < 25°C and RH> 30 %RH (for more details see graphs at device manual)

COMET SYSTEM, s.r.o., Bezrucova 2901
756 61 Roznov pod Radhostem, Czech Republic
Specifications are subject to change without notice.
ie-lgr-n-Uxxxx-b-08