Temperature Data Logger – DATALOG-808
₹21,000 – ₹33,600
Prices are inclusive of Delivery Charges.
DATALOG-808-U – 8 Channel Temperature/Process Data logger.
Libratherm offers Microcontroller-based Temperature / Process Data Logger Model DATALOG-808 which is designed for continuous, simultaneous, and very accurate monitoring and logging of temperature or process values from 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.
DATALOG-808 accepts universal input of standard thermocouples or RTD(Pt-100)/3 wire sensors or 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-808 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 and 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 Alarm 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-808 for max. 64 channels.
Technical Specifications
| Parameters | Description |
|---|---|
| No. of channels | 1 to 8 |
| Universal Input | J, K, RTD (Pt-100)/2 or 3 wire, (4-20) mA, (0-1) VDC, (0-5) VDC etc. |
| (user configurable or factory fixed - as specified) | |
| Input Selection | Factory set for each channel or User selectable for each channel (Model dependent) |
| Range | 0 to 9999 or -9999 to +9999 UOM – Subject to the specified input |
| (Refer the Input and range selection table given below) | |
| Accuracy | Better than ± 0.1 ⁰C , ± 1 ⁰C (Software linearized for temperature) |
| Display | 5 digit each 0.5” 7-segment Red to indicate Process, |
| 5 digit each 0.5” 7-segment Green to indicate Real Time Clock, | |
| 2 digit 0.5” 7-segment Red LED for channel no. | |
| Scan Rate | 1 to 99 sec (programmable through front panel keyboard) |
| Data Storage Interval | 1 to 99 minutes (user programmable). |
| Data Storage | 8000 records. (512KB) – please refer table shown below. |
| Print Interval | 1 to 99 minutes (User programmable) |
| Skip/Hold Facility | Available through key board in configuration mode. |
| High / Low Alarm | Common or individual Settable using key pad - with grouping facility. |
| Common Relay output | 2 nos. potential free change over contacts (1 each for high and low output but common for all the channels) |
| Common Analog output | 4-20mA proportional to highest value of all the channels (Optional) |
| Alarms Outputs | 8 x 2 open collector outputs to drive external relay cards (MSI-RLY-8) |
| LED Indication | 8 Red / Green color LED’s in the front indicating status of each alarm output for High or Low. |
| Serial Interface | RS485 MODBUS RTU protocol in slave mode for PC interface and |
| RS232 serial port for dot matrix printer interface. | |
| Supply | 90V - 260VAC (10VA), 50/60Hz or 24VDC/AC @ 300mA |
| Enclosure | Metallic with ABS bezel and polycarbonate front. |
| Size | 192 x 96 x 200 mm. |
| Panel cut out | 188 x 92 mm +/- 0.5 mm. |
| Size of Relay card RLY-8 | 190 L x 120 W x 75 D mm (35 mm DIN rail mount) |
Input & Range Selection
| Code | Input | Range |
|---|---|---|
| A1 | Factory set to std. universal inputs marked (*) below : A2,A3,A4,A5) | As given below |
| A2 | J type : Fe/Con thermocouple (*) | 0 to 760 °C |
| A3 | K type : Cr/Al thermocouple (*) | 0 to 1372 °C |
| A4 | Pt-100 (Alpha = 0.00385) DIN 43760 (*) | -200.0 to 400.0 °C |
| A5 | 4-20mA (*) | -9999 to +9999 UOM |
| A6 | 0-1VDC (only for DATALOG-808-F) | -9999 to +9999 UOM |
| A7 | 0-5VDC (only for DATALOG-808-F) | -9999 to +9999 UOM |
Ordering Information
| Sr. No. | Model | Description | Part no. |
|---|---|---|---|
| 1.1 | DATALOG -808-U | Input: Universal type – Thermocouple types J, K, RTD Pt-100 and 4-20mA Output: 2 Common Relays Serial Interface : RS-232 for Printer Interface | 3371-1 |
| 1.2 | DATALOG -808-U | Input: Universal type – Thermocouple types J, K, RTD Pt-100 and 4-20mA Output: 2 Common Relays Relay Drivers: 16 transistor output to drive external 16 channel relay cards Serial Interface : RS-232 for Printer Interface | 3371-2 |
| 1.3 | DATALOG -808-U | Input: Universal type – Thermocouple types J, K, RTD Pt-100 and 4-20mA Output: 2 Common Relays Serial Interface : RS-485 for Computer Interface | 3371-3 |
| 1.4 | DATALOG -808-U | Input: Universal type – Thermocouple types J, K, RTD Pt-100 and 4-20mA Output: 2 Common Relays Relay Drivers: 16 transistor output to drive external 16 channel relay cards Serial Interface : RS-485 for Computer Interface | 3371-4 |
| 1.5 | DATALOG -808-U | Input: Universal type – Thermocouple types J, K, RTD Pt-100 and 4-20mA Output: 2 Common Relays Relay Drivers: 16 transistor output to drive external 16 channel relay cards Serial Interface 1: RS-232 for Printer Interface Serial Interface 2: RS-485 for Computer Interface | 3371-5 |
| 1.6 | MSI-RLY-8 | 8 channel relay card – compatible with DATALOG-808 | 3385-1 |
