Eutech Instruments

Eutech Instruments

Wall/Panel Mount pH/ORP Analyzer/Controller
- alpha-pH2000 From Eutech Instruments


Industrial Process Controllers & Monitors

Wall,Mount,pH,ORP,Controller,alpha-pH2000,Eutech,Instrumentsalpha-pH2000 Wall Mount/Panel Mount pH/ORP Analyzer

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

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

  • Automatic Calibration with Auto-Buffer Recognition eliminates mistakes during calibration

  • Symmetrical Mode Operation eliminates electronic noise problems when used with solution ground

  • Backlit Display offers reading in low-light conditions

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

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

  • Two Level Password Protection prevents unauthorized tampering with settings

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

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

  • Two Galvanically Isolated Scaleable 0-20/4-20 mA Outputs for pH/ORP and temperature

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

  • Choice of Glass or Antimony Electrode for general purpose or hydrofluoric acid 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 pH (or ORP) 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

  • Panel-mounted version is also available

Wall,Mount,pH,ORP,Controller,alpha-pH2000,Eutech,Instruments E-Brochure

Wall,Mount,pH,ORP,Controller,alpha-pH2000,Eutech,Instruments Instruction Manual

Wall,Mount,pH,ORP,Controller,alpha-pH2000,Eutech,Instruments Installation Guide Wall Mount

Wall,Mount,pH,ORP,Controller,alpha-pH2000,Eutech,Instruments Installation Guide Panel Mount

Wall,Mount,pH,ORP,Controller,alpha-pH2000,Eutech,Instruments Technical Specifications


General: Useful for any batch or on-line type application that requires accurate pH or ORP control.

Water Purification/Treatment: Use for batch and on-line control of incoming process water, rinse water treatment, recirculating system and waste water treatment.

Industrial: Ideal for chemical processing, food processing. aquarium, pharmaceutical, hydroponics and waste control industries.

Hook to recorder to document data for regulatory compliance.


Product Specification

pH Range -2.00 to 16.00 pH
Resolution & Accuracy 0.01 pH & 0.01 pH
mV Range -1000 to 1000 mV / 0 to 100% (for -100 to 100 mV)
Resolution & Accuracy 1 mV / 0.1% & 1 mV / 0.2%
Temperature Range -10.0 to 110 C (14.0 to 230.0 F)
Resolution & Relative Accuracy 0.1 C / F &
0.5 C / 1.0 F
Temperature Sensor Pt100/ Pt1000 (jumper selectable); 2 or 3 wire
Temperature Compensation Auto / Manual
(Reference at 25C)
Set Point and Controller Functions
Integral Time 0 to 999.9 minutes
Switching pH Hysteresis 0.1 to 1 pH
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
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 40 C
Maximum Relative Humidity 80% up to 31 C decreasing linearly to 50%
at 40 C
Power Supply
80 to 250 VAC/DC 50/60 Hz Approx. 10 VA
Main Fuse
250 mA, Anti-surge, S504 BUSSMAN
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
CU 22 Function 22 mA current output
Isolated Output Voltage +12V 0.5 V (Max 50 mA)
Hold Function Switch
To freeze output current and deactivate control relays
Load Max 600 W
pH Input BNC (1012 impedance); Asymmetrical/ Symmetrical
Connection Terminal
(Wall Mount)
3-pin, 8-pin, 9-pin and 13-pin terminal, detachable blocks
Connection Terminal
(Panel Mount)
3-pin, 9-pin and 19-pin terminal, detachable blocks
Mechanical Specifications
Dimensions (W x H x D) Wall-mount
144 x 144 x 110 mm
96 X 96 X 175 mm
Weight Wall-mount
745g (Unit) / 1100g (Packed)
950g (Unit) / 1100g (Packed)
Environmental Rating Wall-mount
IP66 (NEMA 4X)
IP54 (front panel)

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Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


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