Temperature Scanner
 
Applications
  • Large chemical, pharmaceutical, fertilizer, petrochemical, power and cement plants.
  • Winding & bearing protection for large Motors and Generator Sets.
Features
  • Excellent accuracy and repeatability.
  • Dual slope integrating technique with auto zero and auto polarity.
  • Automatic cold junction and line resistance compensation.
  • Minimum effects of temperature, humidity and power flactuations.
  • Real Time Clock with RS232C or Centronics compatible printer port available optionally.
  • Microprocessor based system with key board operation.
  • Data storage in non-volatile RAM.
  • Various relay output combinations available.
  • Signal selection through solid state multiplexers.
 
Specifications
MODEL A - DTS - 3508 B - DTSC - 3508
INDICATION Data indicated by 3 1/2 digits and channel number indicated by 2 digits : 7 segment LED display of 12.5mm character height with auto polarity indication.
NUMBER OF CHANNELS 4 TO 32 Channels available. (No. of channels is in multiple of 4).
OPEN SENSOR INDICATION Indicated by Data Field as "OPEN".
SCAN RATE Adjustable by keyboard switches provided on front panel. Setting range from 1 to 30 secs.
SCANNING MEDIUM Solid state multiplexers.
TYPE OF CONTROL   ON/OFF Type.
NUMBER OF CONTROL POINTS    PER CHANNEL   1 OR 2.
CONTROL SETTING   Control setting adjustable over full span by Front Panel Keyboard switches.
PROGRAMME MEMORY    RETENTION Programme stored in RAM is protected by battery back-up ( Battery is charged when power is ON ).
CONTROL OUTPUT   1 SPDT contact per relay for 3A resistive load for 230V, 50Hz supply.
RELAY ON STATUS   Indicated by front panel LEDs.
CONTROL ACTION / OPEN    SENSOR PROTECTION Relay energises or de-energises when set Temp. is reached / when sensor is open, relay can be energised or de-energised ( to be specified ).
POWER REQUIREMENT 110V or 230V, 50Hz / 15VA. 110V or 230V, 50Hz / 20VA.
ENCLOSURE 92 (W) x 186 (H) x 280 (D) / 186 (W) x 186 (H) x 330 (D).
OPTIONS   Non Microprocessor based Scanners with scan rate setting by pot. meter are   available in 6/8/12 or 16 channels in 186 (W) x 92 (H) x280 (D) with ranges as   specified in TABLE below.

  Options:
      1). Real Time Clock with Battery Backup.
      2). RS232C Serial Port or Centronix compatible paraller printer port.
INPUT CALIBRATION & RANGE TABLE
 
INPUT TYPE RANGE °C RESO °C ACCURACY
Fe/Co    T/C J 0-700 1 ±0.1%±1
Cr/Al    T/C K 0-1200 1 ±0.1%±1
Cu/Co    T/C T 0-200 0.1 ±0.1%±2
     0-400 1 ±0.1%±1
PTPTRH   10% S 0-1700 1 ±0.1%±2
PTPTRH   13% R 0-1700 1 ±0.1%±2
RTD PT-100 -100 to +200 0.1 ±0.1%±2
    -100 to +600 1 ±0.1%±1
 
 
 
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