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Thermo Scientific Alpha DO 1000
Dissolved Oxygen Controller/Transmitter

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Product Features

The Alpha DO 1000 controller/transmitter accepts low-range and general range probe for extensive measurement range of Dissolved Oxygen in ppm, mg/L or % saturation. Versatile controller/transmitter offers three Dissolved Oxygen control mode: limit control, proportional pulse length control and proportional pulse frequency control.

:: Accepts low range probes (0 to 10 ppm) and general range probes (0.5 to 40 ppm)
   
:: Allows one point or two point DO calibration. Meter displays electrode information after each successful calibration. Previous calibration data is retained in the event unsuccessful calibration
   
:: Automatic salinity and pressure compensation after manual input for more accuracte readings
   
:: Option of Auto or Manual Temperature Compensation. Three-wire system compensates for cable-length resistance errors
   
:: Galvanically-isolated, scaleable 0/4 to 20 mA output for high-quality output on peripheral devices

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

Product Specification

Description
Dissolved Oxygen
Range 0.00 to 20.00 mg/L ; 0.0 to 200.0 %
Resolution 0.01 mg/L ; 0.10 %
Accuracy ±1.5 % of full scale reading
Temperature
Range -9.9 to 125.0 ºC
Resolution 0.1 ºC
Accuracy ±0.5 ºC
Sensor Pt100 ; 3 wire
Compensation
Temperature Compensation Auto/manual
Salinity Compensation 0.0 to 50.0 ppt
(manual setting and automatic correction)
Pressure Compensation kPa/mmHg
(manual setting and automatic correction)
Set Point And Controller Functions
Set Point 1 (SP1) /
Set Point 2 (SP2)
0.00 to 20.00 mg/L or 0.0 to 200.0 %
Switching DO Hysteresis 0.1 to 1.0 mg/L or 0 to 10.0 %
Function (Switchable) P control (pulse length/pulse frequency);
limit control
Adjustable Period With Pulse Length Controller 0.5 to 20 sec
Adjustable Period With Pulse Frequency Controller 60 to 120 pulse/min
Pickup/Dropout Delay 0 to 2000 sec
Contact Outputs 3 SPDT relays
Switching Voltage/
Current/Power
Max. 250 VAC / max. 3 A / max. 600 VA
Alarm Functions
Function (Switchable) Steady or fleet (pulse)
Pickup Delay 0 to 2000 sec
Switching Voltage/
Current/Power
Max. 250 VAC / max. 3 A / max. 600 VA
Electrical Data And Connections
Transmitter Function 0/4 to 20 mA scalable outputs for Dissolved Oxygen, galvanically isolated
Hold Function Switch To freeze output current and deactivate control relays
Load Max. 600 Ohm
DO Input 2-pin terminal
Connection Terminal 5-pole, 17-pole terminal, detachable blocks
Display
LCD 7 segments display with symbols for status information
Power Supply
Input 110 VAC
(jumper selectable) ;
48 to 62 Hz ; max. 7 VA
(For TSDOCTP1001)
220 VAC
(jumper selectable) ;
48 to 62 Hz ; max. 7 VA
(For TSDOCTP1002)
Main Fuse Slow-blow 250 V / 100 mA
Pollution Degree 2
Transient Overvoltage Category II
EMC Specifications
Emitted Interference According to EN 50081-1
Immunity To Interference According to EN 50082-1
Environmental Conditions
Operating Temperature Range -10 to 50 ºC
Max. Relative Humidity 80 % up to 31 ºC decreasing linearly to 50 %
at 40 ºC
Mechanical Specifications
Dimensions (WxHxD) 96 x 96 x 175 mm
Weight 700 g (unit) / 800 g (packed)
Ingress Protection IP54 (front panel)

Order Information

Order No.

Item
TSDOCTP1001 Alpha DO 1000 panel-mount Dissolved Oxygen controller/transmitter with 110 VAC setting. Incl. terminal blocks, gasket, threaded rods, catch, etc.
TSDOCTP1002 Alpha DO 1000 panel-mount Dissolved Oxygen controller/transmitter with 220 VAC setting. Incl. terminal blocks, gasket, threaded rods, catch, etc.

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