Libratherm Instruments Private Limited

Description :
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 maximum 8 different locations.  The logged datas are stored in the internal memory with real time and date. The logged datas can also be monitored in the on- line mode on to the PC screen and can also be down loaded to the PC in the off - line mode. Facility is also available through 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 of 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 type of inputs. MSI-804 incorporates 16 bit ADC and offers 5 digit display having the range of 0 to 20000 counts or -10000 to +10000 counts.  Such wide display range makes it possible to display the temperature or process value with the highest degree of accuracy and resolution. For example, using R type thermocouple the temperature can be displayed with 0.1oC resolution from 0.0 to 1768.0oC.  Similarly, any other process value can be precisely displayed with desired resolution within the specified range.

Other hardware features includes, 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 colour LEDs shows 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 manual increment of the channel number using front panel membrane keyboard.

Product DescriptionMSI-804-F – 8 Channel Temperature/Process Scanner with Fixed type pre-specified input + 2 Common Relay outputs + 16 independent relay drivers.MSI-804-U1 – 8 Channel Temperature/Process Scanner with user selectable Thermocouple and 4-20mA + 2 Common Relay outputs + 16 independent Relay Drivers.MSI-804-U2 – 8 Channel Temperature / Process Scanner with user selectable Pt-100 and and 4-20mA + 2 common relay outputs + 16 independent Relay Drivers.

Key Features

• Highly accurate and sturdy in operation.
• Monitor Temperature, Pressure, Humidity or any such process parameters.
• Incorporates 16 bit ADC with 5 digit display.
• 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.
• RS-485 Serial interface for data transmission to PLC/DCS etc.

Ordering Information

Digital Eight Channel Temperature Scanner are adjustable using front panel potentiometer.

Description:
Libratherm offers Digital Temperature / process Scanner Model MSI-8 which is suitable for continuous monitoring of temperature or process values at different locations using single instrument, thereby eliminates the need for number of individual temperature or process indicators and hence saves on cost and panel space. MSI-8 accepts all inputs of the same type and displays the process value sequentially along with the respective channel number. The scan interval is adjustable from 2 to 20 seconds. The facility is also provided to manually pause the scanning and increment the channel manually in HOLD mode.  
Other than inputs from temperature sensors this Model can also accept (4-20)mA or (0-5) or (0-10) Volt signals to monitor other process variables like pressure, flow, pH, ORP, AC voltage, AC current, etc.

Features:

• Available in standard ¼ DIN sizes.
• Highly accurate and sturdy in operation.
• Elegant looks and Very easy to operate.
• Accepts standard inputs like thermocouple, RTD - Pt-100 2 or 3-wire input, etc.
• Models with 4, 6,& 8 inputs are available.

Application:

• Heat treatment plants, Large tunnel Furnace / Oven
• Transformer oil temperature
• Power plant 
• Food processing ovens
• Laboratory equipment etc.

Product DescriptionTPR-804-4 – 4 Channel Temperature Scanner cum winding and bearing and oil temperature Protection Relay with 4 relay outputs.TPR-804-8 – 8 Channel Temperature Scanner cum Protection Relay with 4 relay outputs.
Technical Specifications
Ordering Information