Libratherm offers Microcontroller-based Temperature / Process Data Logger Model DATALOG-804 which is designed for continuous, simultaneous, and very accurate monitoring and logging of temperature or process values at a maximum of 8 different locations. The logged data are stored in the internal memory in real-time and date. The logged data can also be monitored in the online mode on the PC screen and can also be downloaded to the PC in the offline mode. The facility is also available through the additional serial port to directly print the logged or stored data with real-time/date at the programmable PRINT INTERVAL on EPSON or equivalent Serial Dot Matrix printer.

The Model accepts universal input from standard thermocouples or RTD(Pt-100)/3 wire sensors and voltage or current signals. The type of input for each channel is user-selectable from the keyboard, i.e. all 8 channels can be selected for different types of inputs. Datalog-804 incorporates 16 bit ADC and offers 5 digits display having the range of 0 to 9999 counts or -9999 to +9999 counts. Such a wide display range makes it possible to display the temperature or process value with the highest degree of accuracy and resolution.

Other hardware features include 2 nos. of common for all channels high or low relay outputs, 16 nos. of transistor drivers – available to the user on 20 pin FRC connector and cable. FRC compatible 8 channel relay cards are also available. The respective front panel dual-color LEDs show the status of each channel – whether it is High (Red) or Low (green) when compared to their respective set values.

Standard features include programmable display SCAN time, channel SKIP, and HOLD facility with a manual increment of the channel number using a front panel membrane keyboard.

Key Features:

• Highly accurate and sturdy in operation.
• Monitor and Log Temperature, Pressure, Humidity or any such process parameters.
• Incorporates 16 bit ADC with 5 digit display.
• Built in real time clock and Memory for data storage up to 1 year.
• Accepts maximum 8 DC inputs from thermocouple, RTD, Voltage and Current Signals.
• Two common Relays and 16 independent relay drivers for High/Low Alarms.
• Front panel dual colour LED indications for Alarm status.
• Serial interface for Printer Interface and / or Computer interface.
• User friendly Computer software to integrate max. 8 Datalog-804 for max. 64 channels.

Technical Specifications

Input & Range Selection

Ordering Information