• ​Up to 16 values can be calculated from 4 connected sensors/signals.
• This is the sum of measured and calculated values. E.g. dew point temperature, absolute humidity, specific enthalpy, inter-channel conversion (difference between two connected temperature sensors).
• With 4 Terminals
• Hand-Held Datalogger

The Multilogger has been designed for measuring and recording physical and electric quantities with an adjustable logging interval from 1 second to 24 hours. The device is equipped with 4 inputs (connectors) for external probes or signals. Moreover, some versions also include an internal atmospheric pressure and/or CO2 concentration sensor. The production line consists of several models with various combinations of the input ranges of the measured quantities. The Multilogger can be used either as a stationary or portable device.

Communication

• To communicate with a PC and other systems, the device is equipped with a USB port (located on the side of the device), RS232, and Ethernet.
• The multilogger comes with a USB and Ethernet interface. For WiFi communication, the multilogger can be connected to a TP-LINK WiFi router

ETHERNET interface allows you to

• Send an e-mail if the Multilogger is in an alarm state. The Multilogger can also be connected to the Local Area Network and comes with a web browser. COMET also supplies a SQL Database that allows the customer to store, download and view historical data in detail for full analysis.
• In case of connection failure, use DATALINK for upload values to COMET Database
• Third-party applications to read the actual measured values using universal protocols SNMPv1 and XML

Output Alarm Out

• Output can be used for controlling other devices when an alarm is launched, such as an external buzzer, telephone dialer, etc.
• Users can receive alarms if the values go outside the parameters set. Alarms are indicated through an internal buzzer, 3 LEDs, or email alerts via Ethernet port.

Power Supply

• Power supply is provided from the 5V DC AC adapter and operation of the device (except Ethernet interface) is backed up by replaceable batteries.
• The device can be used permanently installed or as a portable device with the option to charge batteries directly using the AC adapter or using standard alkaline batteries size AA.

Software

• Comet Database
• Complex solution for data acquisition, analyzing, and sending SMS or email alarms. Easy to use and high flexible Database software for all Comet Data Loggers and Transmitters.
• Comet Vision
• Free configuration software for Comet Multiloggers.

Additional Features

Temperature and humidity

Multilogger is designed to measure from external temperature and humidity sensor and internal pressure sensor. High precision capacitive polymer sensor ensures excellent calibration long-term stability, inertia against water, and condensation. Multilogger is designed for use in non-aggressive environment. Degrees Celsius and Fahrenheit are user selectable.

Ethernet interface

10Base-T/100Base-TX Ethernet interface via standard RJ45 connector. IP address can be obtained automatically from DHCP server or set manually. Internet protocol version 4 is supported only.

WWW server

Actual measured values are accessible via a powerful embedded web server. Web pages are ready for access from mobile devices like smartphones and tablets. Device configuration via web pages is possible too. The device allows you to use customize the design of web pages.

Alarms

It is possible to set two independent alarm limits for each channel (ie. measured or calculated value) which can be configured either as an upper and lower limit or who limits exceeded in a consistent direction. Alarm signalization can be acoustic (built-in beeper), optical (3 LEDs), alarm output, or sending an e-mail alert.

Email

Warning emails are sent when measured values exceeds selected limits. Emails are also sent when values return back into a safe range. SMTP authentication is supported, but SSL is not. Domain name for SMTP server address is supported.

Actual values via XML

XML protocol for actual measured values reading. This protocol is suitable for device integration into 3rd party SCADA systems.

SNMP protocol

SNMP version 1 protocol for IT infrastructure. Using SNMP protocol you can read actual measured values, alarm status, and alarm parameters. MIB tables with OID descriptions are available.

MIN/MAX memory

Memory for minimum and maximum values. Memory is independent on values in history memory. Minimum and maximum values can be cleared according to user requirements.

Applications

• Server rooms monitoring
• Building HVAC management
• Warehouses
• Museums, archives, galleries
• Factories and manufacturing
• Air-conditioned rooms