COMET U8410M-G Series Dataloggers with Radio Modem Owner’s Manual
- June 10, 2024
- COMET
Table of Contents
U8410M-G Series Dataloggers with Radio Modem
Owner’s Manual
Dataloggers with radio modem
UxxxxM and UxxxxG family
QUICK START MANUAL
U3120M(G) · U3121M(G)
U3631M(G) · U4440M(G) · U8410M(G)
PRODUCT DESCRIPTION
The dataloggers are designed for measuring and recording physical and
electric quantities with an adjustable logging interval from 1 second to 24
hours. The measured values (instantaneous or the average, minimum and maximum
values detected during the recording interval) are stored in 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). For each measured value it
is possible to set two alarm limits. The alarms are signalled by the symbols
on the LCD display, by flashing the LED, by acoustic or by sending a warning
SMS or JSON message. The data recording can be performed continuously or only
when an alarm occurs.
The dataloggers of the UxxxxM family contain a 2G (GSM) radio modem,
dataloggers of the UxxxxG family contain a combined 2G/4G (GSM and LTE) modem.
Using the modem, the device connects to the mobile operator’s network after
inserting a suitable SIM card. Modem is used to send SMS messages to up to
four selected recipients and to send the measured values using JSON messages,
e.g. to the COMET Cloud (optionally to your own storage). In addition to alarm
warning messages, SMS messages containing current measured values and alarm
statuses can be sent at regular intervals.
Device setting, data downloading and online monitoring are 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.
The datalogger is powered by an internal Li-Ion battery. The device includes a
charging circuit, which is activated automatically when a standard USB charger
is connected or after connecting a device to a computer. The charging takes
place if the battery condition requires it and the internal temperature of the
device is in the range 0 and 40 ºC. Fast charge mode can be run by turning off
the device.
| Device type | Measured values | Construction |
|---|---|---|
| U3120M(G) | Ti + RH + Td + 1x cc | Internal temperature and relative humidity |
sensor
U3121M(G)| Te + RH + Td + 1x cc| Connector for an external Digi/E probe
connection
U3631M(G)| Ti +Te + RH + Td + Tdiff + 1x cc| Internal temperature and
relative humidity sensor and connector for Pt1000/E probe connection
U4440M(G)| Ti + RH + Td + P + CO2 + 1x cc| Internal sensors of temperature,
relative humidity, barometric pressure and CO2 concentration
U8410M(G)| CO2| Internal sensor of CO2 concentration
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
Insert the micro-SIM card into the device (see other side of this sheet). Use
a card with parameters conforming to the expected number of sent SMS messages
and amount of received and transmitted data. If the SIM card is protected by
PIN code, make a note it, and later insert this code into the device
configuration. Proceed with care and avoid contact of the external conductive
parts with the electronics of the device (the datalogger is constantly
supplied from the internal battery). An optional accessory is a prepaid IoT
SIM card (order code LP105) for sending data to the COMET Cloud. Please note
that this card does not support the sending of SMS messages. The UxxxxMsim and
UxxxxGsim kits with built-in IoT SIM card (e.g. U3121Msim) allows the instant
connection to the COMET Cloud.
Fasten the device on the wall with two screws or insert it into the wall
holder LP100 (optional accessory). Datalogger may be operated as a portable
one. In this kind of operation avoid the device falling down. Try to maintain
the proper working position.
- The dataloggers always install vertically (with the antenna facing up) into locations with sufficient mobile operator signal quality. Insufficient signal level can be in reinforced concrete buildings, metal chambers and other shielded areas.
- Connect the probes to the device (maximum length of cables should not exceed 30 m, recommended maximum cable length of the Pt1000/E probe is 15 m)
- The devices with all cables should be located as far as possible from potential interference sources
Set-up the device
- Connect the datalogger with attached probes to the computer. Use an USB cable with USB-C connector (max. cable length 3 m).
- Run the installed COMET Vision software and select the device you want to set up from the device list
- Click on the Configuration button. The device configuration will be downloaded and you can change the setup of individual items.
- Finally save the new configuration into the device (Apply changes)
The devices do not require special maintenance. We recommend checking the state of the battery (charge as needed) and regularly verifying the accuracy of measurements with calibration.
SAFETY INSTRUCTIONS
**** – Read carefully the Safety information for dataloggers with GSM modem
before operating the device and observe it during use!
– Installation, electrical connection and commissioning should only be
performed by qualified personnel in accordance with applicable regulations and
standards
– 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| U3120M(G)| U3121M(G)| U3631M(G)|
U4440M(G)| U8410M(G)
---|---|---|---|---|---
Power batteries| Li-Ion accu pack 5200 mAh
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| -20 to +60 °C| —| -20 to +60 °C| -20 to
+60 °C| —
Accuracy of internal temperature measurement| ± 0.4°C| —| ± 0.4°C| ± 0.4°C| —
External temperature measuring range| —| according to the probe| -90 to
+260°C| —| —
Accuracy of external temperature measurement| —| according to the probe| ±
0.2°C| —| —
Relative humidity measuring range (without condensation)| 0 tO 100 °/oRH|
according to the probe| 0 to 100 ca/oRH| 0 to 100 %RH| —
Accuracy of the relative humidity sensor| ± 1.8 %RH “| according to the probe|
± 1.8 %RH **| ± 1.8 %RH “| —
Dew point temperature measuring range| -60 to +60°C| according to the probe|
-60 to +60°C| -60 to +60°C| —
Accuracy of dew point temperature measurement ***| ± 1.5°C| according to the
probe| ± 1.5°C| ± 1.5°C| —
Barometric pressure measuring range| —| —| —| 700 to 1100 hPa| —
Accuracy of barometric pressure measurement at 23°C| —| —| —| ± 1,3 hPa| —
CO2 concentration measuring range| —| —| —| 0 to 5000 ppm| 0 to 5000 ppm
Accuracy of CO2 concentration measurement (25°C .1013 hPa) “‘”| —| —| —|
±(50ppm +3% 0 measwec aiue)| ±(50ppm+31’odmesared value)
Recommended calibration interval| 1 year| according to the probe| 1 year| 1
year| 5 years
Protection class – case with elektronics / T+RH sensor| IP6711P30| P67 / —|
IP67 /IP30| IP20 /IP20| IP20 / —
Temperature operating range| -20 to +60°C| -20 to +60°C| -20 to +60°C| -20 to
+60°C| -20 to +60°C
Relative humidity operating range (without condensation)| 0 to 100%RH| 0 to
100%RH| 0 to 100%RH| 0 to 95%RH| 0 to 95%RH
Recommended storage temperature range| -20 to +45°C| -20 to +45°C| -20 to
+45°C| -20 to +45°C| -20 to +45°C
Recommended storage humidity range (without condensation)| 5 to 90°/oRH| 5 to
90°/0RH| 5 to 90%RH| 5 to 90%RH| 5 to 90%RH
Electromagnetic compatibility according to| ETSI EN 301 489-1| ETSI EN 301
489-1| ETSI EN 301 489-1| ETSI EN 301 489-1| ETSI EN 301 489-1
Weight| 260 g| 260 g| 260 g| 270 g| 270 g
Dimensions [mm] SIM card installation
Turn off the device and unscrew the rear cover of housing (use the TORX T10
key)
Insert the SIM card into the holder
Screw up the rear cover of the device • check the seal in the nut for
integrity tighten screws gradualy and with feeling| | 
| 
| 
| 
Notice: the CO2 concentration measuring range can be changed for extra fee to 0 to 10,000 ppm, accuracy t (100 ppm + 5% of measured value)
Dimensions
U3121M(G), U8410M(G)
U3120M(G), U3631 M(G),
U4440M(G)
device accuracy without probe
in the range of -200 °C to +100 °C is 10.2 °C, in the 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 11 %RH, non-
linearity 11 %RH
at ambient temperature T < 25 °C and relative humiddly RH > 30 %RH (for
details see graphs in the instruction manual)
****temperature dependence in the range -20 to +60 °C is typ. ±(1+MV/1000)
ppmCO2.PC. where MV is measured value
COMET SYSTEM, s.r.o.
Bezrucova 2901 756 61
Roznov pod Radhostem, Czech Republic
Specifications are subject to change without notice
IE-LGR-N-UxxxxM-b-02