U7844G wireless four-channel data logger with pulse and two-stage inputs, with built-in 4G COMET modem

Description

The U7844G wireless four-channel data logger with pulse and two-stage inputs, with built-in 4G COMET modem , is designed to record data from four binary inputs or from two pulse and two binary inputs.

In case the set limits are exceeded, SMS and JSON messages can be sent over the 4G data connection.

Measured values can be sent to the COMET Cloud, a comprehensive monitoring, alarm and analysis system.

It is also possible to set up regular sending of JSON messages to the COMET Database, the sending interval is configurable.

Alarms are also displayed locally by LED, LCD and acoustically with built-in beep.

Recording takes place in non-volatile electronic memory. Data can be transferred to a PC via the included USB-C cable.

The inputs of the GSM data logger can be configured for four binary inputs or two binary inputs and two pulse counters.

The GSM recorder includes a traceable calibration certificate with declared metrological traceability of standards based on the requirements of EN ISO/IEC 17025.

 

Technical features

MEASURED VALUE

• impulse
• two-state signal

BINARY ENTRANCE

• voltage contact parameters:
  • input voltage of level “L”: < 0.4 V(*)
  • input voltage of level “H”: > 2 V
  • minimum valid voltage: 0 V
  • Maximum valid voltage: +30 V DC
• Voltage-free contact parameters
  • contact resistance in “on” state: < 10 kOhm
  • contact resistance in “off” state: > 300 kOhm
  • contact voltage in “off” state: approx. 3 V
  • minimum duration of the state required to lock the state: 1 s

ENTRY INTO THE COUNTRY

• Counter parameters: 24 bit range (16 777 215), counter flow option
• maximum pulse frequency:
  • configured for voltage input – max. 5kHz
  • configured for a voltage-free or open-collector transistor – max. 200 Hz

GSM MODEM PARAMETERS

• LTE Cat 1: LTE FDD/GSM/GPRS/EDGE
• supported network types:
  • GSM/GPRS/EDGE 900/1800 MHz
  • LTE FDD B1/B3/B5/B7/B8/B20

GENERAL TECHNICAL DATA

• operating temperature: -20 … +60 °C
• channels: 4x binary input or 2x binary input and 2x counter
• memory: 500,000 values in non-cyclical recording mode; 350,000 values in cyclical recording mode
• recording interval to internal memory: adjustable from 1 second to 24 hours
• COMET Cloud recording interval: from 5 minutes
• Alarm measurement and evaluation interval: configurable 1 s, 10 s, 1 min
• recording mode
  • Non-cyclical – data logging stops after the memory is full
  • cyclic – after filling the memory, the oldest data is overwritten by new data
• real time clock: year, leap year, month, day, hour, minute, second
• power supply: rechargeable Li-Ion battery A8200, 3.6 V/5200 mAh
• protection class: IP20
• dimensions: 61 x 93 x 53 mm, with antenna 120 x 93 x 53 mm
• Weight (including batteries): approx. 270 g
• Warranty: 3 years

 

Delivery includes:

• U7844G
• Directions
• traceable calibration certificate
• rechargeable battery
• power supply
• USB-C cable
• FREE COMET Vision analytical software
• COMET Cloud for 3 months

 

Software

• Comet Vision software (2.2.8445.25397 dbapi 20.2)
• Comet Database One Click Installer (20.2-I)
• Conversions – the app for converting values

 

Read the articles:

WEB SENZORJI – Ethernet in komumnikacija

 

Other designations: U7844 G, U7844_G, U7844-G, U7844/G