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Industrial Process Controllers & Monitors

alpha-DO1000 1/4 DIN Dissolved Oxygen Controller

  • Built-In Programmable Limit, Proportional (Pulse Length or Pulse Frequency) - ideal for precision process control applications

  • User-Customization through Advanced Setup Menu offers flexibility in matching the controller's functions to suit individual's specific requirement

  • Readout in mg/L, pm or % saturation

  • Barometric and Salinity Automatic Compensation after manual input

  • Hold Relay for use with float switches/flow switches and other controllers as a failsafe function

  • Two Level Password Protection prevents un authorized tampering with settings

  • 0 to 2000 Second Time Delay Adjustment on control and alarm delays

  • Two Galvanically Isolated Scalebale 0-20/4-20 mA Outputs

  • Wash Contact Relay controls electrodes cleaning systems at desired duration and frequency

  • Choice of General Purpose or Low DO measurement for wider applications 

  • Adjustable Hysteresis (Dead Band) prevents rapid contact switching near set point

  • Non-Volatile Memory retains all stored parameters and calibration data even if power fails

  • Large Dual Display shows DO with temperature simultaneously - features clear multiple icons, set points, and status messages 
  • Choice of Temperature Sensor Pt100/Pt1000 with 2-wire or 3-wire temperature input selection
  • Easy Installation and Wiring with detachable plug-in connectors

Applications

General: Useful for monitoring temperature and control of DO in wastewater treatment and aquaculture applications. Use with valves, blowers or aerators to ensure proper system operation.

Specifications of alpha-DO1000 Controller

Product Code EC-DOCTP1001/2
Dissolved Oxygen Range 0.00 - 19.99 mg/l (ppm); 0.00 to 199.9%
Resolution & Accuracy 0.01 mg/L or 0.1% & ±1.5% Full scale
No. of Calibration Points 1 (100% saturation) or 2 (100% and 0% saturation)
Salinity/Barometric Pressure compensation 0.0 - 50 ppt; 555 to 808 mmHg or 74 to 108 kPA
Probe Type Galvanic cell
Response Time 40 seconds to achieve 93% of the reading
Temperature Range -9.9 to 125.0 °C
Resolution & Accuracy 0.1 °C & ± 0.5 °C
Pressure Input KPa/mmHg (manual input or automatic correction)
Type of Controller Setting Off (Monitoring); Limit;
Proportional (Pulse Length or Pulse Frequency)
Pickup/Dropout Delay 0 to 2000 seconds
No. of Relays
Maximum Voltage
Maximum Current
High/Low Hysteresis Band		 2 SPDT; 1 Alarm
250 VAC
3A; 
0.1 to 1.0 mg/L or 1 to 10.0 %
Wash Cycle/Duration 0.1 to 199.9 hrs & 1 to 1999 sec
Contact Set-points Lo/Lo; Lo/Hi; Hi/Lo; Hi/Hi (selectable)
Alarm Function Latching / Pulse (software)
Power 120 or 240 VAC, 50/60 Hz
Dimensions 1/4 DIN (96 x 96 mm)

Thermo Fisher Scientific Inc.
Copyright © 1997 Eutech Instruments Pte Ltd. 4info@eutechinstamerica.com