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8900 Multi-Parameter Controller
Accessories and Replacement Parts

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)
  • Compatible Sensors: All Signet Digital/Pulse Output Flow Sensors, 2250, 2350, 2450, 2750, 2850, 8058-x
  • 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)

Technical Details

Add to Cart
3-8900.61414-terminal plug (for I/O Module)Measurements 159000902
3-8900.6044-terminal plug (for Power Module)Measurements 159000903
3-8900.6066-terminal plug (for Dry-contact Relays)Measurements 159000937
3-8900.391Rear Panel w/ Captive ScrewsMeasurements 159000918
3-8900.561Front Face Panel GasketMeasurements 159000919
3-8900.6022-terminal plug, 2 ea. (for SSR & Outputs 3 & 4)Measurements 159000904


  • 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
  • China RoHS
  • UL
  • RoHS Compliant
  • FCC


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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