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Molten Metal Temperature Indicator
FEATURES
Technical
Specification Download
Catalogue
 Introduction
Libratherm offers microcontroller based
Molten Metal Temperature Indicator model LMI-2010,
which is designed to measure accurately the temperature
of the molten metals, both ferrous and non ferrous.
The measurement of this temperature is a critical
process, since the expendable thermocouple is dipped
for merely 3 to 4 seconds and then withdrawn. In
this short measurement time, the operator is guided
through the measurement cycle by audio/visual alarms
for thermocouple continuity, measurement in progress
and measurement over. Any error in measurement or
thermocouple open condition is also immediately
detected and informed by activating the audio/visual
alarm . LMI-2010 is indigenously designed using
high speed microcontroller to measure and display
molten metal temperature in very short time interval.
The indicator is rugged, reliable, field proven
and very easy to operate. The user can select the
desired type of thermocouple and also set other
parameters using front panel key board. During measurement,
the indicator ignores the slag temperature and the
Average or Plateau reading is determined using the
advanced algorithm and the same is latched and displayed
on the bright 7 segment 2” Led display. This reading
can also be displayed on 4” remote display and can
be logged on to a computer using serial RS485 MODBUS
RTU protocol for recording and further analysis
purpose.
FEATURES
- Microcontroller based design.
- User friendly, reliable and rugged for harsh industrial
environment.
- Suitable for measurement of ferrous / non ferrous
molten metal temperature up to 1820oC.
- Accepts K, R, S and B type expandable thermocouple
(user / field selectable).
- Measurement cycle programmable from 2 to 9 seconds.
- Measurement technique using digital filtering
for accurate temperature reading.
- On line audio / visual indication with event
relay output for remote indication.
- Remote Display (4” size) using 2 wire RS-485
interface - (optional) (Maximum 8 such display units
can be connected).
- (4-20)mA retransmission output proportional to
the measured temperature - (optional).
- PC interface for data logging of each measurement
cycle on RS485/Modbus RTU with supporting windows
based software --- (optional).
TECHNICAL
SPECIFICATION
| Model |
LMI - 2010 |
| Input |
K, R, S and B
type thermocouple (user selectable) |
|
Range |
Full
positive range of the selected input |
| Accuracy |
Within +/-0.1%
of the range |
| Resolution |
1°C |
| Cold Junction
Comp. |
Automatic using
built in sensor from 0°C to 50°C |
| Display |
4 digit 2” seven
segment LED display |
| Measurement
Time |
2 to 9 seconds
(user programmable) |
| Plateau Detection |
1 to 99 oC (user
programmable) |
| LED indication |
13 front panel
LEDs for various functions |
| Visual Alarm
Indication |
Provided for Thermocouple
continuity, Measurement in progress, Measurement
Over |
| Retransmission
Output |
(4-20)mA, RL(max.)
= 400 Ohms |
| Serial Communication |
RS485 2 wire for
remote display and computer interface (Using MODBUS
RTU protocol) |
| Supply |
180 to 250VAC,
50/60 Hz |
| Enclosure |
Dust free - Metallic
powder coated |
| Size |
300 x 260 x 150
mm. (w h d) |
| Mounting |
Wall mounting |
DOWNLOAD
CATALOGUE
 indicates
- Product Catalogue
in PDF
format,
required: Adobe
Acrobat Reader
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MOLTEN
METAL TEMPERATURE INDICATOR |
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