The Model ODPM 2000 is based on the well proven
optical cross duct measuring principle comprising of
a stack mounted transmitter and receiver unit with
a remote µ-processor based monitor.

The instrument has been designed to project a
stabilised light source and cancel the effect of any ambient
light, with the result of providing an accurate and reliable
measure of smoke within the stack.
The monitor displays a reading of the percentage
opacity (Smoke Density) with a 4 to 20mA
and RS422/485 output.

The monitor also offers the facility to adjust the alarm level
with volt free alarm contacts and remote alarm or zero reset.

Efficient high volume blower units (optional)
maintain the optical lenses clean.



 

 Specifications (Monitor):

• Display  4 pcs. 14 mm high
   seven segment L. E. D.'s
  
• Outputs:  Analog Output: 4 - 20 mA max. loop
   resistance 500 ohm´s
  
• Digital Output:  RS 422/485 interface.
  
• Relay Output:  Potential free contacts carrying
   4 A at 240 Vac
  
• Accuracy:  Better than ±1 % of scale
• Ambient temperature:  0 - 50 ^oC
  
• Supply Voltage:  240 (110, 220) Vac±10 % 50/60 Hz
  
• Consumption:  10 VA
  
• Alarm: Setting:  0 - 99 % of scale continuous set.
  
• Delay: nbsp;5 seconds
  
• Display:  Flashing
  
• Resetting:  Relay released. Display flashing
   until value below set value.
  
• Test:  100 % of scale simulated by
  &nbp;turning transmitter off.
  
• Dimensions:  H x W x D:
   129mm x 61 mm x 215 mm + 25 mm
   outside panel
  
• Fitting:  Single in a standard ABS-cabinet.
   Several in a standard 19" rack.
  
  
• ABS-cabinet can be fitted in a panel cutout or on a
  wall. Rear part of cabinet removable for wire connection.
  
  
• Temperature range: - 10 - 60 ^oC
    

Specifications (transmitter / receiver unit):

Fitting:  On a flange ending
 a 76mm (3")
 diameter extension tube
 with standard lengths of
 150, 300 or 450 mm.

• Dimensions:  L x W x H:
   190 mm x 110 mm x 192 mm
  
• Distance between
  transmitter and receiver:  0,3 - 6 Meter
  
• Purge-air connections:  1" Tube Thread
  
• Interconnection
  cable length:  Up to 100 meter between
   transmitter, receiver
   and monitor.
  
• Temperature range:  - 10 - 60 ^oC.