MICROPROCESSOR BASED DATA LOGGER
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Product Details
MODEL WISE DESCRIPTION:
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PRODUCT DESCRIPTION:
Libratherm offers Microprocessor based Sixteen and Thirty two channel Temperature /Process Data Logger models DATALOG-16 and DATALOG-32, which are designed for continuous monitoring and logging of temperature or process variables at 2 to32 different locations, with indicating accuracy of 0.1oC or 1oC.In DATALOG16 each input has independent amplifier and hence each channel can be calibrated for different input type. For example out of 16 channels, 8 channel scan be thermocouples, 4 can be RTD (PT-100) and rest 4 can be (4-20) mA.
In applications where, in addition to monitoring of the process parameters, the data logging, data storage in the non-volatile memory, common or individual high or low alarm relay outputs, printer or PC interface is also desired, the Model DATALOG-16 offers them all as per the requirement. For this facility the built in Real Time Clock allows real time data logging, parallel printer port allows on line and off line printing and RS232/RS485 serial port allows data logging on to the computer. Customized data logging Software working on Windows platform is also offered for both graphical and tabular representation of the datas of all the channels that is logged in. Single data-logger can also be grouped for multiple systems. Libratherm offers, standard and customized PC based software to meet users requirement. The serial communication is based on MODBUS ASCII protocol, which allows Datalog-16 or Datalog-32 to be interfaced with other master devices working on the same protocol.
TECHNICAL SPECIFICATIONS:
Design | Microprocessor based( 8 bit) with 12 bit ADC and 8 bit DAC |
| No. Of channels | 4, 8, 12 or16 can be expanded upto 32 channels. |
| Input | J, K, R, S, B, C, D, RTD(PT-100), RTD(PT-1000)/2 or 3 wire, (4-20)mA, (0-1)V etc. (each channel can be of different input type) |
| Range | -200 to 2000oC Subject to the specified input |
| Accuracy | Better than ± 0.1oC, ± 1 oC - Software Linearized. |
| Resolution | 0.1oC, 1oC |
| Display | 4 digit each 0.5" 7-segment red LED to display process and set values 2 digit 0.5" 7 segment red LED for channel no 6 digit 0.5" 7 segment green LED for real time clock |
| Open Sensor Indication | Display shows Flt-1 or Flt-2 and relays will be turned OFF |
| Scan Rate | 1 to 99 sec (programmable through front panel keyboard) |
| Skip/Hold Facility | Available through key board in configuration mode |
| Key board | 6 x 1 soft key membrane keypad for data entry |
| Common Relay outputs | 2 nos. potential free change over contact available (1 each for high and low output but common for all the channels) |
| Individual Alarm Outputs | 2 per channel i.e. 32 open collector outputs to drive external relay card. Can be provided as LL, HH, LH, HL alarm & trip Logic |
| LED Indication | 32 LED's in the front indicating status of each alarm output |
| Data Logging | Real Time with Programmable log time and storage time |
| Serial / Parallel Interface | Parallel Centronics printer output port for Printer and Serial (RS232/RS485) for PC with Window based software on Modbus ASCII Protocol |
| Data Storage | 2K to 128K memory bank |
| Size | 192 x 96 x 200 mm (DATLOG-16/H) or 96 x 192 x 200 mm. (DATALOG-16/V) |
| Panel Cutout | 186 x 92 mm., or 92 x 186 mm ± 0.5 mm |
| Supply | 230VAC / 110 VAC ± 10% (10VA), 50/60Hz or 24VDC @ 500mA |
| Enclosure | Metallic with ABS bezel and polycarbonate front fascia |
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