Home Contact Us   Catalogue Request  |  Dealer Enquiry
 SEARCH


delivering total solutions ..
..millenium technology
We, at Techmark, are committed for Customer Delight and not only Customer Satisfaction.

Products
Hand-Held Flue Gas Analysers
Portable Flue Gas Analysers
Continuous Emission Monitors (CEM's)
Dust / Opacity Monitors
Ambient Air Quality Monitoring Stations
Engine Exhaust Analysers
Gas Detectors
Efficiency Monitoring
Water Quality
Meteorology
Pressure & Flow Measurement : AIR
Pressure & Flow Measurement : LIQUID
Temperature Measurement
Samplers & Sample Preparation Equipment
Biogas-/ Syngas Analysis
Engine Exhaust Gas Analysis
Mercury Monitoring
Source / Stack Testing
Effluent Monitoring


  Products > Water Quality > Sub Products > Dissolved Oxygen Meter > alphaDO 2000












 Downloads
Brochure
Product Features

 > Employs the Galvanic Measurement Principle
 > 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
 > Two 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


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 measuring  range  0.00 to 25.00 mg/l or 0.0 to 300.0%  Saturation
 Relative accuracy  ± 1.5 % of full scale reading for  both ranges
 Resolution  0.01 mg/l or 0.1 %
 Temperature  -10.0 to + 125.0 °C (14.0 to 257.0  °F)
 Resolution  0.1 °C / °F
 Relative Accuracy  ± 0.5 °C (± 1.0 °F)
 Sensor  Pt100 /Pt1000 (jumper selectable);  2 or 3 wire
 Temperature Compensation  Auto / manual
 Pressure Compensation  K.Pas / mmHg (Manual setting and  automatic correction)
 Salinity Compensation  0.0 to 50.0 ppt (Manual setting and  automatic correction)
 Set-point and Controller Functions
 Function (switchable)  P/PI control (pulse length/pulse  frequency); limit control
 Integral time  0 to 999.9 minutes
 Adjustable period with pulse  length controller  0.5 to 20 sec.
 Adjustable period with pulse  frequency controller  60 to 120 pulses/min
 Pickup / Dropout delay  0 to 2000 seconds
 Wash cycle  0.1 to 199.9 hours
 Wash duration  1 to 1999 seconds
 Switching Dissolved oxygen  hysteresis  0 to 10 % of full scale
 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
 Switching voltage / current /  power  Max. 250 VAC / Max 3A / Max  600VA
 Display
 LCD  UV coat, backlit 14 segments  display with symbols for status  information
 Backlight  On/Off selectable with four level of  brightness control
 Electromagnetic Compliance (EMC) Specifications
 Emitted Interference  According to EN 50081-1
 Immunity to Interference  According to EN 50082-1
 Environmental Conditions
 Ambient temperature operating  range  0 to 40 °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. 10VA
 Main Fuse  250 mA anti-surge, S504  BUSSMANN
 Pollution Degree  2
 Transient Overvoltage  category  II
 Electrical Data and Connections
 Signal Output  Two 0/4 to 20 mA outputs for  Dissolved Oxygen and temperature,  galvanically isolated.
 Load  Max. 600 Ohm
 Dissolved Oxygen input  Screw terminal
 Connection terminal  5-pin, 8-pin, 9-pin and 13-pin  terminal, detachable blocks
 Mechanical Specifications
 Dimensions (W x H x D) Wall  Mount  144 x 144 x 111.5 mm
 Weight Wall Mount  745g (unit) / 1100g (Packed)
 Environmental Rating Wall  Mount  IP 65 (NEMA 4X)


Order Information

 ORDER NO.  ITEM
 ECDOCTP2000W  Alpha DO 2000 Dissolved Oxygen  Controller/Transmitter – Wall mount