alpha,pH1000,1/4 DIN,pH,ORP,Controller,Eutech,Instruments

alpha-pH1000 1/4 DIN pH/ORP Controller From Eutech Instruments

alpha,pH1000,1/4 DIN,pH,ORP,Controller,Eutech,Instruments

Industrial Process Controllers & Monitors

alpha,pH1000,1/4 DIN,pH,ORP,Controller,Eutech,Instrumentsalpha-pH1000 1/4 DIN pH/ORP Controller

  • Built-In Programmable Limit, Proportional (Pulse Length or Pulse Frequency) - ideal for 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

  • One-Point Online Calibration without shutting down the lin

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

  • Level Password Protection prevents un authorized tampering with settings

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

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

  • 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


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.

Regulatory: Hook to recorder to document data for regulatory compliance.


Product Specification

pH Range -2.00 to 14.00 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
Temperature Range -9.9 to 125 C
Resolution & Relative Accuracy 0.1 C & 0.5 C
Temperature Sensor Pt 100/ Pt 1000 (jumper selectable)
Temperature Compensation Auto / Manual (reference at 25 C)
Set Point and Controller Functions
Function (Switchable) P/PI control (Pulse Length / Pulse Frequency); Limit Control; Off
Hysteresis 0.1 to 1 pH or 1 to 10.0% / 10 to 100 mV
Adjustable Period with Pulse Length Controller 0.5 to 20 seconds
Adjustable Period with Pulse Frequency Controller 60 to 120 pulses/min
Proportional Range 10 to 500%
Integral Action Time (IAT) 0 to 999.9 minutes
Pickup / Dropout Delay 0 to 2000 seconds
Switching pH Hysteresis 0.1 to 1 pH
Switching ORP Hysteresis 1 to 10.0% / 10 to 100 mV
Contact Outputs, Controller
2 potentialfree change-over contacts
Switching Voltage / Current / Power Max 250 VAC / Max 3A / Max 600VA
Alarm Functions
Function (Switchable) Launching or Pulse
Wash cycle 0.1 to 199.9 hrs
Wash direction 1 to 9999 s
Pickup Delay 0 to 2000 seconds
Switching Voltage / Current / Power Max 250 VAC / Max 3A / Max 600VA
Electrical Data and Connections
Power requirement 100/ 2200CD (jumper selection)
Frequency 48 to 62Hz
EMC Specifications Emissions: according to EN 50081-1
Susceptibility: according to EN 50082-1
Signal Output 0/4 to 20mA, galvanically isolated
Load Max. 600 Ω
pH/ORP BNC, screw terminals
Connection Terminal Terminal blocks 5-pole/ 17-pole, removable
Main Fuse/ Fine Wire Fuse Slow-blow 250 V/ 100 mA
Environmental Conditions
Pollution Degree II
Transient Overvoltage Category II
Altitude Up to 2000 m
Maximum Relative Humidity 80% up to 31C decreasing linearly to 50% at 40C
Power Supply Mains supply voltage fluctuations not exceeding 10% of the nominal voltage
Ambient Temp. Operating Range -10 to 50 C
Mechanical Specifications
Dimensions 175 x 96 x 96 mm
Weights Max. 0.7kg
Material ABS with polycarbonate
Insulation IP 54/ IP 40