OMET U0843M Data Loggers with GSM modem User Manual

OMET U0843M Data Loggers with GSM modem

PRODUCT DESCRIPTION

U0843M · U5841M · U6841M · U7844M

The dataloggers Ux8xxM equipped with a two-part self-locking terminal block are designed for measuring and recording physical and electric quantities with an adjustable logging interval (1 sec. to 24 hours). The measured values (instantaneous or the average, minimum and maximum values detected during the recording interval) are stored in 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 message. The data recording can be performed continuously or only when an alarm occurs.

GSM modem is a part of each datalogger. 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. 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 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.

The datalogger is powered by an internal LiIon 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.

INSTALLATION AND OPERATION

Insert the micro-SIM card for the 2G network 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 kit (datalogger with built-in IoT SIM card) allows the instant connection to the COMET Cloud.

Fasten the datalogger on the wall with two screws or insert it into the wall holder LP100 (optional accessory). The device always install vertically (with the antenna facing up) into locations with sufficient GSM signal quality. Insufficient signal level can be in reinforced concrete buildings, metal chambers and other shielded areas. The device can be operated as a portable ­ in this case the device protect from falling and try to maintain the proper working position. The device should be located as far as possible from potential interference sources.

Connect input cables

• Remove the terminal block from the device, connect the wires (maximum wire cross-section 1.5 mm2 ) with either the supplied SP013 tool or a screwdriver corresponding to the size and the terminal block again push to the device
• The maximum length of input cables should not exceed 30 m (recommended cable length of the Pt1000 probe is 15 m).
• The voltage, current and binary inputs are not each other galvanically isolated.
• The current inputs (U6841M) are passive. The current loops cannot be powered from datalogger directly (use external power source)
• The device with all cables should be located as far as possible from potential interference sources

Set-up the device

• Connect the datalogger with attached cables to the computer. Use an USB cable with USB-C connector (max. cable length 3 m).
• Run the installed COMET Vision software and from the device list select the datalogger you want to set up
• 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 verifying the measurement accuracy regularly by 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

Specifications are subject to change without notice
IE-LGR-N-Ux8xxM-05

Technical specifications

(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
Temperature measuring range| -90 to +260°C| —| —| —
Accuracy of temperature measurement| ± 0.2°c •| —| —| —
DC voltage measuring range| —| 0 to 10 V| —| —
Accuracy of DC voltage measurement| —| —| 0 to 20mA| —
Binary input configured for dry contact| Excitation voltage| approx. 3 V| approx. 3 V| approx. 3 V
Binary input configured for voltage measurement| Contact resistance for the ,switched-on” state| < 10 kΩ| < 10 kΩ| < 10 kΩ
Contact resistance for the ,switched-off’ state| >2 MΩ| >2 MΩ| >2 MΩ
Input voltage range| 0 to 30 V| 0 to 30 V| 0 to 30V
Input voltage for the ,L” level| < 0.8 V| < 0.8 V| < 0.8V
Input voltage for the .H” level| > 2.0 V| > 2.0 V| > 2.0V
Protection class of the case with elektronics| IP20| IP20| IP20| IP20
Temperature operating range| -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 100%RH
Working position| with antenna facing up| with antenna facing up| with antenna facing up| with antenna facing up
Recommended storage temperature range (5 to 90 %RH, without condensation)| -20 to +45°C| -20 to +45°C| -20 to +45°C| -20 to +45°C
Electromagnetic compatibility according to| ETSI EN 301 489-1| ETSI EN 301 489-1| ETSI EN 301 489-1| ETSI EN 301 489-1
Weight| 270 g| 270 g| 270 g| 270 g

SIM card instalation

1. Unscrew the rear cover of the device (use the TORX T10 key).

2. Insert the SIM card into the holder.
   

3. Srew up the rear cover of the device.
   • check the seal in the nut for integrity.
   • the screws tighten carefully.

SP013 tool for WAGO connector

Dimensions

Electrical connection

• the accuracy of the device without probe is± 0.2 ‘C in the range of-90 to +100 ‘C , in the range of +100 to +260 ‘C is accuracy of the device without probe ±0.2 % of measured value

COMET SYSTEM, s.r.o. Bezrucova 2901
756 61 Roznov pod Radhostem, Czech Republic

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