GF 9900 Multi-Parameter Transmitter



  • Multi-Parameter input selection
  • Optional field upgradeable relays
  • Dial-type digital bar graph

GF 9900 Multi-Parameter Transmitter

The 9900 Multi-Parameter Transmitter has superseded most of Signets previous range of individual Transmitters and Indicators, please contact us if you have further questions about its suitability for your needs.

The Signet 9900 Multi-Parameter Transmitter provides a single channel interface for various parameters. These include flow, pH/ORP, Conductivity/Resistivity, Salinity, Pressure, Temperature, Level and other sensors that output a 4 to 20 mA signal.  The 9900 transmitter (generation II) has the added capability of supporting the batch module for batching control.

The extra large (3.90 x 3.90) auto-sensing back-lit display features at-a-glance visibility that can be viewed at 4-5 times the distance over traditional transmitters. The highly illuminated display and large characters reduce the risk of misreading or misinterpreting the displayed values. The display shows separate lines for units, main and secondary measurements as well as a ‘dial-type’ digital bar graph.

The 9900 is offered in both panel or field mount versions. Both configurations can run on 12 to 32 VDC power (24 VDC nominal). The 9900 can also be loop powered with compatible sensors.

Designed for complete flexibility, plug-in modules allow the unit to easily adapt to meet changing customer needs. Optional modules include Relay, Direct Conductivity/Resistivity, H COMM, Batch and a PC COMM configuration tool. The unit can be used with default values for quick and easy programming or can be customised with labelling, adjustable minimum and maximum dial settings, and unit and decimal measurement choices.

Features of the Signet 9900 Multi Parameter Transmitter include:​

  • Multi-Parameter input selection
  • Large auto-sensing backlit display with at a glance visibility
  • Dial-type digital bar graph
  • Intuitive and user-friendly interface consistent with legacy Signet ProPoint® and ProcessPro® devices
  • Optional field upgradable relays
  • Selectable error mode for current outputs, 3.6 mA or 22 mA
  • 4 to 20 mA input (with optional 8058 Signal Converter)
  • Warning LED indicator
  • Custom 13-character label capabilities for the channel type
  • Factory reset capability
  • Optional PC COMM configuration tool
  • Optional H COMM module for two-way communication
  • Optional Batch Module for Batch Control

Typical Applications:​​

  • Wastewater Treatment
  • Reverse Osmosis
  • Deionization
  • Ultra Pure Water
  • Two Bed System
  • Mixed Bed System
  • Chemical Manufacturing/Addition
  • Metal and Plastic Finishing
  • Fume Scrubber
  • Cooling Towers
  • Media Filtration


Manufacturer: GF Signet

Part Ref: GF-9900

IWN: FLO-GF-9900

Liquid: Clean Water, Dirty Water

Media Type: Liquids

Contact Us Today To Enquire About Our Products And Services

Specification Detail of the 9900 Multi Parameter:

Input Channels

Input Types
Digital (S3L): Serial ASCII, TTL Level, 9600 bps;
Frequency: Range – 0.5 to 1500Hz, Accuracy – 0.5% of reading

Measurement Types
Flow, pH/ORP, Conductivity/Resistivity, Salinity, Pressure, Temperature, Level, Dissolved Oxygen, Batch or user-defined

Case: PBT
​Window: shatter resistant glass
Keypad: 4 buttons, injection moulded silicon rubber seal
Display: Back-lit and 14-segment

Operating Temp Range
-15° to 70°C

Display Ranges
Flow Rate: -9999 to 99999 units per second, minute, hour or day;
​Pressure: -40 to 1000psi, Totaliser: 0.00 to 99999999 units

Current output – One (1); Two (2) with 4 to 20 mA output module

Relay Specifications
​Dry-Contact Relays (2), Open Collector (1)

Fluid Type

Applicable Liquids
Clean water, dirty water

Input Power
DC: 10.8 to 35.2 VDC, regulated, 9900 without relay module: 200mA @ 10.8 to 35.2 VDC, 9900 with relay module: 300mA @ 10.8 to 35.2 VDC


Enclosure Rating
NEMA 4X/IP65 (front face only on panel mount); field mount is 100% NEMA 4X/IP65


2250 Hydrostatic Level Sensor

Part Ref: 3-2250-

IWN: LEV-903296

The Signet 2250 Hydrostatic Level Sensor for level and depth control has a one-piece injection moulded PVDF body...

515 Rotor X Paddlewheel Flow Sensor

Part Ref: 515/8510-xx

IWN: FLO-706303

A self-powered, reliable paddlewheel flow sensor with versatile application from GF Signet. GF Signet 515 Rotor-X paddlewheel flow...