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8900 Multi-Parameter Controller

The Signet 8900 Multi-Parameter Controller takes the concept of modularity to the extreme. Each 8900 is field commissioned with the users specified combination of inputs, outputs, and relays using simple-to-install modular boards into the base unit. Configure the system by selecting either two, four, or six input channels which accepts any of the Signet sensors listed below, and/or other manufacturer's sensors via a 4 to 20mA signal converter (Signet Model 8058). To complete your unit, choose a power module with universal AC line voltage or 12 to 24 VDC.

If more features are needed, analog output and relay modules are available and easily installed. Plus, the 8900 will support up to four additional relays via an external relay module.

There are other notable features that the 8900 offers. For instance, digital input to the 8900 enables longer cable runs and simplified wiring with minimal noise interference. Advanced relay logic allows users to select up to 3 measurement sources to trigger 1 relay. Derived measurements include difference, sum, ratio, percent recovery, percent rejection, percent passage and BTU. The menu system can be programmed to display in multi-languages including English, German, French, Spanish, Italian, and Portuguese.

  • Display: Backlit LCD, 2x16 alphanumeric characters
  • Sensor Input: Up to 6 inputs, Analog or Digital (S3L) or Pulse (2 max for pulse)
  • Analog Output: Up to Four, 4-20mA isolated, passive/active option or 0-5VDC or 0-10VDC
  • Relay/Solid-State Output:  Up to 4 Internal and up 2 or 4 more external contact relays (via 8059)
  • Compatible Sensors: All Signet Digital/Pulse Output Flow Sensors, 2250, 2350, 2450, 2750, 2850, 8058-x

Technical Details

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3-8900RequiredBase Unit with LCDMeasurementsCAD 159000868
3-8900.401-1RequiredTwo inputs, no outputsMeasurements 159000870
3-8900.401-2RequiredTwo inputs, two passive 4 to 20mA outputsMeasurements 159000871
3-8900.401-3RequiredTwo inputs, two active 4 to 20mA outputsMeasurements 159000872
3-8900.401-4RequiredTwo inputs, two 0 to 5/10 VDC outputsMeasurements 159000873
3-8900.401-5RequiredFour inputs, no outputsMeasurements 159000874
3-8900.401-6RequiredFour inputs, two passive 4 to 20mA outputsMeasurements 159000875
3-8900.401-7RequiredFour inputs, two active 4 to 20mA outputsMeasurements 159000876
3-8900.401-8RequiredFour inputs, two 0 to 5/10 VDC outputsMeasurements 159000877
3-8900.401-9RequiredSix inputs, no outputsMeasurements 159000968
3-8900.401-10RequiredSix inputs, two passive 4 to 20mA outputsMeasurements 159000969
3-8900.401-11RequiredSix inputs, two active 4 to 20mA outputsMeasurements 159000970
3-8900.401-12RequiredSix inputs, two 0 to 5/10 VDC outputsMeasurements 159000971
3-8900.402-1Required85 to 264 VAC powerMeasurements 159000878
3-8900.402-2Required12 to 24 VDC powerMeasurements 159000879
3-8900.403-1OptionalTwo dry-contact relaysMeasurements 159000880
3-8900.403-2OptionalTwo solid-state relaysMeasurements 159000881
3-8900.405-1OptionalTwo passive 4 to 20mA outputsMeasurements 159000883
3-8900.405-2OptionalTwo active 4 to 20mA outputsMeasurements 159000884


  • Up to 8 relays
  • Accepts 3rd party 4 to 20 mA output devices when used with 8058 signal converter

  • 12 to 24 VDC or 100 to 240 VAC ±10%, regulated power

  • Up to 4 analog outputs
  • Measures Flow, pH, ORP, Conductivity, Pressure, Level and Temperature
  • 1/4 DIN enclosure
  • Digital Communication allows for extended cable lengths, and easy wiring

  • Multi-language display

Fields of Application:
  • Chemical Processing
  • Metal and Plastic Finishing
  • Demineralizers
  • Fume Scrubbers
  • Wastewater Treatment
  • Aquatic Animal Life Support Systems
  • Pure Water Production
  • Cooling Tower & Boiler Protection

  • CE
  • UL
  • RoHS Compliant


Automation Made Easy.pdfPDF5.11 MBDownload

8900 CE Certificate.pdfPDF24.16 KBDownload

Data Sheet - 8900 Multi-Parameter Controller.pdfPDF1.7 MBDownload

Instruction Manual
Italian Manual - 8900 Multi-Parameter ControllerPDF5.04 MBDownload
German Manual - 8900 Multi-Parameter ControllerPDF5.54 MBDownload
Spanish Manual - 8900 Multi-Parameter ControllerPDF5.23 MBDownload
Portuguese Manual - 8900 Multi-Parameter ControllerPDF2.57 MBDownload
French Manual - 8900 Multi-Parameter ControllerPDF5.36 MBDownload
English Manual - 8900 Multi-Parameter ControllerPDF4.69 MBDownload
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