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alpha-DO500 1/4-DIN 2-Wire Dissolved Oxygen Transmitter with LCD From Eutech Instruments

alpha,DO500,1/4-DIN,2-Wire,Dissolved,Oxygen,Transmitter,LCD ,Eutech,Instruments

Two Wire Transmitter

alpha,DO500,1/4-DIN,2-Wire,Dissolved,Oxygen,Transmitter,LCD ,Eutech,Instrumentsalpha-DO500 1/4-DIN 2-Wire Dissolved Oxygen Transmitter with LCD

The Eutech alpha DO 500 1/4-DIN 2-wire dissolved oxygen transmitter features improved circuitry design that prevents ground loop effects and provides high reliability in the measurement of Dissolved Oxygen.

With advanced diagnostic capabilities, excellent flexibility and minimal maintenance, the alpha 500 series transmitters are the perfect instruments to complete your systems in aquaculture, chemical processing or water and wastewater treatment industries.


  • Easy installation and operation
    Advanced diagnostics like ‘out-of-range’ and ‘hold’ indicators help in monitor and process control. Clear annunciators and easy-to-read dual-line display enables instantaneous view of measured readings and set-up configurations for effortless installation and operation. In addition, scalable 4 to 20 mA current output resolution ensures better resolution at chart recorder or other peripheral devices. Suitable for indoor and outdoor use with its IP65-rated weatherproof housing, the alpha 500 series transmitter can be wall or panel mounted according to industrial requirements.

  • Fuss-free, easy maintenance
    Intuitive push-button user-interface ensures easy calibration and set-up for everyone. The offset adjustment feature enables you to correct readings conveniently without the need to remove the electrode on-site.

  • Optimal performance in demanding applications
    The alpha 500 series transmitter prevents output interference due to electrical noise or leakage from the input source. Cross-talk between multiple transmitters in a serial loop is eliminated for better accuracy. In addition, operations are not disrupted even if one unit requires maintenance as the transmitters operate on a 12 to 24 V D.C. power supply.


Product Specification

DO range mg/l of oxygen: 0.00 20.00 mg/l or
0.00 to 19.99 ppm
% saturation of oxygen: 0.0 to 200.0% saturation
Resolution &
0.01 mg/l or 0.01 ppm or 0.1%
1.5% full scale
Temperature range 0.0 to 100.0 C
Resolution & Accuracy 0.1 C / 0.5 C
Temp Sensor Pt100 (2 wire or 3 wire)
Temp. Compensation
Auto / Manual (0 to 50 C
Temp. Coefficient
0 to 10 C (Selectable)
Pressure Compensation 0.74 to 3.00 bar; 55 to 225 cmHg; 10.7 to 43.5 PSI (Manual setting and Automatic correction)
Salinity Compensation 0.0 to 50.0 ppt
(Manual setting and automatic correction)
Input Asymmetrical / Symmetrical
Transmitter Output Range 4.0 to 20.0 mA
Over/ Under Range Current Output 3.8 mA : 'ON' selects 3.8 mA
'OFF' selects 4 mA (under range)
selects 20mA (over range)
Hold Current Output 22mA : 'ON' selects 22 mA
'OFF' selects last measured current value
Display Dual Display Custom LCD
Power Requirements
12 to 24 VDC
Load Resistance Max. 600 W
Ingress Protection IP65 protection against dust and water jets
(Wall or panel mount)
Dimension 96 x 96 x 66 mm (3.78 x 3.78 x 2.6 inch)
Weight 210 g