Temperature Monitoring System

Temperature Scanner

The Temperature Monitoring System (SCN525) is a microcontroller based system used for measuring temperature of high rating motor windings, power generator and transformer windings. This system can also be used for temperature measurement in Food processing units, Chemical, cement and fertilizer factories. The temperature scanner can measure and control temperature up to 16 points. The single board scanner is completely user programmable. There are two operational levels: Operator and Superior level. The operator level permits channel display selection in Auto or manual or hold or Alarm acknowledge.

Key features of TMS

  • Microcontroller based design
  • Accepts thermocouple, RTD, mV and mA inputs
  • Multiplexing by Analog switches
  • Two set points per channel
  • Alarm and trip indication for each channel
  • Error compensation at site
  • Compact in size/modular construction
  • Programmable scan time, set point and channel pause
  • EERAM storage
  • Protection against EMI/stray noise
  • Built-in watchdog timer
Type Temperature Scanner
Circuit Design Microcontroller based Design
No. of Inputs 6, 8, 12 and 16
Type of Inputs Direct RTD (PT -100 ohms or 46 ohms)Thermocouple (Type J, K, R, S) mV (Please specify the range) mA (4 – 20 mA or 0-20 mA)
Resolution 0.1°C for RTD, 1°C for thermocouple and0.1 or 1 unit for other inputs as per range
Accuracy +0.25% over full scale
Type of A/D Converter 12 bit fast AD Converter
Sampling Time 16 Channel / Second
No. of Digits Six (2 digit for channel number and 4 digit for parameter)
Type of Display 7 Segment 0.5″ Red LED
Scan Time 1 to 30 Seconds, Programmable
Scanning Mode Auto / Manual
Auto Mode For Automatic scrolling of a Channel
Manual Mode For Continuous indication of a Channel selected  and  stepping one by one.
CJC & BTC Function Available for thermocouples
Over Range Display Available
Open Sensor Display Available
Channel Skip Facility Available
Channel Hold Facility Available
Zero & Span Digital Calibration available for each input Calibration through key pad
Type of PCB Single board construction
Mains Failure A non volatile EEPROM  is used  to  store the  set points,  scan  time  and  zero &  span calibration  constants
No. of Set Points 2 Per Channel for Low & High,
High & High , High or  Low  &  Low
Low  control  action
Setting Means Through Key pad
Control Output Common Relay output 1 No each for two of the set points. Optionally, more relay outputs by grouping the channels or
individual  alarm output  for  each  input with common  trip  relay output or  individual  trip output with  common  alarm output
Contact Rating 3 Amps, at 240V AC
Alarm Acknowledge Available Facility
Status Indication Normal – No Indication
1st Set Point – Green
2nd Set Point – Red
Program, Auto, Manual & Hold mode by Red LED Indication
Watch dog Timer
Supply brown out protection
Available
Operating Temperature 55°C Max.
Option 110V / 415V AC or DC supply with SMPS
Box Dimension 96(W) x 192(H) x 250(D) mm
Type RS485
Protocol MODBUS – RTU
Isolation Provided
Traffic Status Indicated through TXD, RXD LED, RELAY BOX
No. of Relays 16 or 32. Two relays per channel or one relay per channel with common alarm relay for all 16 channels.
Input Logic signal from scanner unit through 9 pin ‘D’ type connector
Operating Voltage 240V AC + 10% 50 Hz
Relay Type PCB soldered 12V DC operated OEN relay
Contact Rating 3 Amps at 240AC
Box Dimension 225(W) x 180(H) x 55(D) mm
+ Technical Specification
Type Temperature Scanner
Circuit Design Microcontroller based Design
No. of Inputs 6, 8, 12 and 16
Type of Inputs Direct RTD (PT -100 ohms or 46 ohms)Thermocouple (Type J, K, R, S) mV (Please specify the range) mA (4 – 20 mA or 0-20 mA)
Resolution 0.1°C for RTD, 1°C for thermocouple and0.1 or 1 unit for other inputs as per range
Accuracy +0.25% over full scale
Type of A/D Converter 12 bit fast AD Converter
Sampling Time 16 Channel / Second
+ Display
No. of Digits Six (2 digit for channel number and 4 digit for parameter)
Type of Display 7 Segment 0.5″ Red LED
Scan Time 1 to 30 Seconds, Programmable
Scanning Mode Auto / Manual
Auto Mode For Automatic scrolling of a Channel
Manual Mode For Continuous indication of a Channel selected  and  stepping one by one.
CJC & BTC Function Available for thermocouples
Over Range Display Available
Open Sensor Display Available
Channel Skip Facility Available
Channel Hold Facility Available
Zero & Span Digital Calibration available for each input Calibration through key pad
Type of PCB Single board construction
Mains Failure A non volatile EEPROM  is used  to  store the  set points,  scan  time  and  zero &  span calibration  constants
+ Alarm/Trip Control
No. of Set Points 2 Per Channel for Low & High,
High & High , High or  Low  &  Low
Low  control  action
Setting Means Through Key pad
Control Output Common Relay output 1 No each for two of the set points. Optionally, more relay outputs by grouping the channels or
individual  alarm output  for  each  input with common  trip  relay output or  individual  trip output with  common  alarm output
Contact Rating 3 Amps, at 240V AC
Alarm Acknowledge Available Facility
Status Indication Normal – No Indication
1st Set Point – Green
2nd Set Point – Red
Program, Auto, Manual & Hold mode by Red LED Indication
Watch dog Timer
Supply brown out protection
Available
Operating Temperature 55°C Max.
Option 110V / 415V AC or DC supply with SMPS
Box Dimension 96(W) x 192(H) x 250(D) mm
+ Communication (Option)
Type RS485
Protocol MODBUS – RTU
Isolation Provided
Traffic Status Indicated through TXD, RXD LED, RELAY BOX
No. of Relays 16 or 32. Two relays per channel or one relay per channel with common alarm relay for all 16 channels.
Input Logic signal from scanner unit through 9 pin ‘D’ type connector
Operating Voltage 240V AC + 10% 50 Hz
Relay Type PCB soldered 12V DC operated OEN relay
Contact Rating 3 Amps at 240AC
Box Dimension 225(W) x 180(H) x 55(D) mm

Data Logger

Various process parameters like flow, pressure, speed, and temperature are monitored by the data logger. The low and high for each input channel can be programmed. User friendly software allows user to view online data and real-time trends.

Temperature Process Indicator/Controller (TIC510)

Microcontroller based Temperature process indicator and controller capable of
accepting J, K, R, S thermocouple, PT100U RTD, mV and mA inputs.

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