Product Details
 

 
   
Alpha DO2000 Series Dissolved Oxygen Controller / Transmitter

 

 

Product Features

 

:: Available in both Galvanic (αlpha DO2000) and Polarographic (αlpha DO2000PG) versions.

:: Programmable for On/Off, Proportional, or PI (Proportional integral CONTROL) - ideal for most demanding precision process control applications

:: Calibration is quick and easy using the atmospheric air as the calibration media for 100% air saturation

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

:: Includes Barometer pressure, Salinity, Temperature Compensation

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

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

:: Backlit 14 segments display with symbols for status information and On/Off selectable with four levels of brightness control

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

:: Three-Level Password Protection prevents unauthorized tampering with settings

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

:: Universal Power Supply Input from 85 to 250 VAC/DC allows use at multiple sites and withstands voltage fluctuations

:: Choice of Temperature Sensor Pt100/Pt1000 with 2-wire or 3-wire temperature input selection

:: Dual Display shows Dissolved Oxygen value with temperature simultaneously - features clear multiple icons, set points, and status messages

:: Rugged NEMA 4X housing protects controller from the elements and dirty industrial applications

:: Easy Installation and Wiring with detachable plug-in connectors

 

Specifications

 

Product Specification

Description

DO Range

Galvanic: 0.00 – 25.00 mg/l or 0.00 – 300% Saturation
Amperometric: 0.00 – 20.00 mg/l or 0.00 – 200% Saturation

Resolution

0.01 mg/l or ppm or 0.1 %

Accuracy

Galvanic: ±1.5 % full scale
Amperometric: ± 1% full scale

Temperature Range

-10.0 to 125 °C (14.0 to 257.0 °F)

Resolution & Relative Accuracy

0.1 °C / °F &
±0.5 °C / ±1.0 °F

Temperature Sensor

Galvanic: Pt100/ Pt1000 (jumper selectable); 2 or 3 wire
Amperometric: NTC 22 kΩ Thermistor

Temperature Compensation

Auto / Manual

Salinity Compensation

0.0 to 50.00 ppt (Manual setting and Automatic correction)

Pressure Compensation

0.740 to 3.000 Bar; 555 to 2250 mmHg; 10.73 to 43.51 PSI
(Manual setting and Automatic correction)

Set Point and Controller Functions

Integral Time

0 to 999.9 minutes

Switching Hysteresis

Galvanic: 0 to 10% full scale
Amperometric: 0.1 to 1.0 mg/l or 1.0 to 10.00 %

Function (Switchable)

P/PI control (Pulse Length / Pulse Frequency);
Limit Control; Off

Adjustable Period with Pulse Length Controller

0.5 to 20 seconds

Adjustable Period with Pulse Frequency Controller

60 to 120 pulses/min

Pickup / Dropout Delay

0 to 2000 seconds

Wash Cycle

0.1 to 200.0 hours

Wash Duration

1 to 2000 seconds

Contact Outputs, controller

1 SPDT, 3 SPST relays

Switching Voltage / Current / Power

Max 250 VAC / Max 3A / Max 600VA

Alarm Functions

Function (Switchable)

Latching / pulse

Pickup Delay

0 to 2000 seconds

Display

LCD

UV coat, backlit 14 segments display with symbols for status information

Backlight

On/Off selectable with four levels of brightness control

Electromagnetic Compliance (EMC) Specifications

Emitted Interference

According to EN 61326

Immunity to Interference

According to EN 61326

Environmental Conditions

Ambient Temperature Operating Range

0 to 50 °C

Maximum Relative Humidity

80% up to 31 °C decreasing linearly to 50%
at 40 °C

Power Supply

Input

80 to 250 VAC/DC 50/60 Hz Approx. 10 VA

Main Fuse

Galvanic: 315 mA Anti-surge, 250 V
Amperometric: 250 mA, Anti-surge

Pollution Degree

2

Transient Overvoltage Category

II

Electrical Data and Connections

Transmitter Function

Two 0/4 to 20 mA scalable outputs for pH/ORP and temperature, galvanically isolated

Load

Max 600 W

DO Input

Screw terminals

Connection Terminal
(Galvanic)

5-pin, 8-pin, 9-pin and 13-pin terminal, detachable blocks

Connection Terminal
(Amperometric)

Wall mount: 2x3-pin, 8-pin 9-pin and 13-pin terminal blocks
Panel mount: 3-pin, 9-pin and 19-pin terminal blocks

Mechanical Specifications

Dimensions (W x H x D)

Wall-mount (Galvanic)
Wall-mount (Amperometric)
Panel-mount

144 x 144 x 111.5 mm
144 x 144 x 110 mm
175 x 96 X 96 mm

Weight

Wall-mount
Panel-mount

745g (Unit) / 1100g (Packed)
700g (Unit) / 850g (Packed)

Environmental Rating

Wall-mount
Panel-mount

IP66 (NEMA 4X)
IP54 (Front panel)

 

Ordering Information

 

Order No.

Item

TSDOCTP2000W

Alpha DO2000 DO Controller/Transmitter (Galvanic) with 4-20 mA Output and 85-250 VAC/DC (Unit Only). Features include Proportional/Proportional Integral Control, Independent Alarm Setpoints with Hysteresis, Scaleable Output, etc.

TSDOCTP2000WPG Alpha DO2000 DO Controller/Transmitter (Amperometric) with 4-20 mA Output and 85-250 VAC/DC (Unit Only). Features include Proportional/Proportional Integral Control, Independent Alarm Setpoints with Hysteresis, Scaleable Output, etc.
TSDOCTP2000PPG Alpha DO2000 DO Controller/Transmitter (Amperometric) with 4-20 mA Output and 85-250 VAC/DC (Unit Only). Features include Proportional/Proportional Integral Control, Independent Alarm Setpoints with Hysteresis, Scaleable Output, etc.

 

Download Brochure

Alpha 2000 Series

 

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DO Process Electrodes

     
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