Eutech Instruments

Eutech Instruments

alpha-RES1000 1/4 DIN Resistivity Controller
From Eutech Instruments


Industrial Process Controllers & Monitors

alpha,RES1000,1/4 DIN,Resistivity,Controller,Eutech,Instrumentsalpha-RES1000 1/4 DIN Resistivity Controller

  • Two Selectable Resistivity Measurement Ranges in one controller via its IP54 front panel. High-level accuracy of ±1% of full scale can be obtained with appropriate cells and correct temperature coefficient

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

  • Choice of Cell Constant (0.01, 0.1) for accurate control in any solution

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

  • Two Level Password Protection prevents un authorized tampering with settings

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

  • Galvanically Isolated Scalebale 0-20/4-20 mA Outputs

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

  • 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

  • Line Resistance Compensation against intrinsic cable resistance for longer cable connection

  • Large Dual Display shows DO 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

alpha,RES1000,1/4 DIN,Resistivity,Controller,Eutech,Instruments E-Brochure

alpha,RES1000,1/4 DIN,Resistivity,Controller,Eutech,Instruments Instruction Manual


General: Use for virtually any batch or online applications where rapid, accurate control. Great for OEM/system integrator.

Water Purification/Treatment: Suitable for pure, ultrapure, and reagent grade water batches of incoming process water.

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


Product Specification

Conductivity Range 0.00 to 19.00 mΩ/cm
0.000 to 1.999 mΩ/cm
0.01 mΩ/cm
0.001 mΩ/cm
Accuracy 1 % full scale
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 Limit / Proportional (pulse or frequency) controller
Switching Hysteresis 0 to 10% full scale
Pickup / Dropout Delay 0 to 2000 seconds
Contact Outputs, Controller
2 potential free change-over contacts
Switching Voltage / Current / Power Max 250 VAC / Max 3A / Max 600VA
Alarm Functions
Function (Switchable) Launching or Pulse
Pickup Delay 0 to 2000 seconds
Switching Voltage / Current / Power Max 250 VAC / Max 3A / Max 600VA
Electrical Data and Connections
Power requirement 110/ 220 VAC (jumper selection)
Frequency 48 to 62Hz
Signal Output 0/4 to 20mA, galvanically isolated
Load Max. 600 Ω
Connection Terminal Terminal blocks 5-pole/ 17-pole, removable
Main Fuse/ Fine Wire Fuse Slow-blow 250 V/ 100 mA
EMC Specifications
Emitted Interference
According to EN 50081-1
Immunity to Interference According to EN 50082-1
Environmental Conditions
Maximum Relative Humidity 10 to 95%, non-condensing
Ambient Temp. Operating Range 0 to 50 C
Mechanical Specifications
Dimensions 175 x 96 x 96 mm
Weights Max. 0.7kg
Material ABS with polycarbonate
Insulation IP 54/ IP 65

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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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