GF Signet 8550-1 Flow Transmitter
Overview
The GF Signet 8550-1 flow transmitter is a rugged, single input/output signal converter engineered by GF Piping Systems to convert the frequency output of any GF Signet flow sensor into a stable, scalable 4–20 mA current loop signal. Designed for maximum configuration flexibility, the 8550-1 is available in field mount, integral pipe mount, or panel mount packaging, allowing plant engineers to standardize on a single transmitter platform across paddle wheel, magnetic, and ultrasonic flow sensor installations throughout a facility.
As the official authorized partner and exclusive regional representative for Georg Fischer Piping Systems, Seven Star LLC proudly supplies the GF Signet 8550-1 flow transmitter to water treatment plants, industrial process facilities, and utility operators across Oman and the wider GCC. Every unit shipped from our Muscat-based instrumentation division arrives with full manufacturer documentation, and our technical team supports sensor pairing, output scaling, and commissioning for clients throughout the Sultanate of Oman.
Operating Principle
The GF Signet 8550-1 accepts a frequency input signal from a compatible GF Signet flow sensor — paddle wheel, magmeter, or ultrasonic — and processes it through state-of-the-art digital electronics that scale the pulse frequency to an engineering unit of flow rate or total volume. The transmitter’s microprocessor continuously linearizes the incoming signal and outputs a proportional isolated 4–20 mA current loop, along with permanent and resettable totalizer counts displayed on a 2 x 16 character dot-matrix LCD. Because the signal conditioning is fully digital, the 8550-1 can be field-scaled to match virtually any flow range or engineering unit without recalibrating the sensor itself.
This architecture means the transmitter introduces no moving parts and no additional pressure drop into the process line, since all signal conditioning happens downstream of the sensor in a separate enclosure. The practical benefit for maintenance teams is that a failed transmitter can be swapped without disturbing the wetted sensor assembly, and a single spare 8550-1 can be pre-configured and held in inventory to minimize downtime across an entire plant’s flow monitoring network.
Engineering Design of the GF Signet 8550-1
The GF Signet 8550-1 is housed in a NEMA 4X-rated enclosure with a self-healing window that resists scratching and chemical exposure, making it suitable for outdoor installation in coastal and desert climates without an additional weatherproof housing. Large, tactile push buttons allow configuration even with gloved hands, and numbered terminals simplify wiring verification during commissioning or troubleshooting. The transmitter accepts a loop-powered 12 to 24 VDC supply and includes an output simulation mode for complete downstream system testing before the sensor is connected.
Two packaging options cover the full range of installation scenarios: the integral/pipe mount version couples directly to the sensor housing using the 8051 Integral Mount Kit for a compact single-point installation, while the panel mount version, installed using the 8050 Universal Mounting Kit, allows the transmitter to be positioned in a control panel or convenient wall location up to the maximum cable run distance from the sensor. Optional relay modules add process control outputs directly at the transmitter for simple pump or valve interlocks without a separate PLC.
Key Features
The GF Signet 8550-1 flow transmitter gives Omani water and process facilities a dependable, field-proven signal conversion platform:
- Converts the frequency signal from any GF Signet flow sensor into an isolated, scalable 4–20 mA output for long-distance transmission.
- Includes both permanent and resettable totalizers for accurate volumetric accounting and batch tracking.
- Offers field mount, integral pipe mount, and panel mount packaging options to fit any installation layout.
- Features a NEMA 4X enclosure with self-healing window for reliable outdoor and washdown-area operation.
- Provides a 2 x 16 character dot-matrix LCD with large push buttons for straightforward field configuration.
- Supports optional relays for direct process control such as pump protection or high/low flow alarms.
- Includes an output simulation function for complete system testing without live flow present.
- Scales to virtually any flow range or engineering unit, simplifying standardization across multi-sensor installations.
Industrial Applications
The GF Signet 8550-1 flow transmitter is widely used in flow control and monitoring for filtration and softener systems, effluent totalization, feed pump pulsing, and ratio control in chemical dosing skids. It is a common fixture in municipal and industrial water distribution networks, where its leak detection and totalizing capability support both regulatory reporting and operational efficiency, as well as in RO desalination trains and cooling tower makeup water systems common across Gulf process facilities.
As the officially authorized partner for Georg Fischer Piping Systems, Seven Star LLC distributes the GF Signet 8550-1 to water treatment authorities, district cooling operators, and industrial plants across Muscat, the Sohar and Salalah economic zones, and the broader GCC region. Our regional stock holding ensures clients receive genuine GF Signet hardware with full traceability, supported by local application engineering rather than a distant overseas distributor.
Technical Specifications
Key specifications for the GF Signet 8550-1 flow transmitter are summarized below.
| Parameter | Specification |
|---|---|
| Model | GF Signet 3-8550-1 |
| Display | 2 x 16 character alphanumeric LCD, 1 second update rate |
| Power supply | 12 to 24 VDC ±10%, 61 mA max (loop powered) |
| Sensor input range | 0.5 to 1500 Hz |
| Output | 4 to 20 mA isolated, fully adjustable, 100 ms update rate |
| Output accuracy | ±0.03 mA |
| Display accuracy | ±0.5% of reading @ 25°C |
| Enclosure rating | NEMA 4X with self-healing window |
| Mounting options | Field/integral pipe mount, panel mount |
| Operating temperature | -10°C to 70°C |
| Compatible sensors | All GF Signet paddle wheel, magmeter, and ultrasonic flow sensors |
Call To Action
Seven Star LLC supports formal RFQ submissions, maintains regional warehouse stock, and provides full technical datasheets for the GF Signet 8550-1 flow transmitter on request. Contact our instrumentation division to confirm sensor compatibility and mounting configuration for your application. As the authorized partner for Georg Fischer Piping Systems in Oman and the GCC, Seven Star LLC is your trusted local source for genuine GF Signet flow instrumentation, backed by warranty and regional technical support.
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