GF 3-9900-01P Signet Process Transmitter with Hot-Swap Modules

GF 3-9900-01P is a pre-assembled, pre-configured model within the George Fischer (GF) Signet modular process transmitter family. Based on the revolutionary 3-9900 platform, it comes pre-integrated with specific input and output modules, providing a "plug-and-play" solution for common applications. While retaining all the advantages of the modular system, it further simplifies the procurement, installation, and commissioning processes.

II. Core Model Analysis: Decoding the "P" Model

The model number "3-9900-01P" itself is a series code or base unit code. For specific procurement and selection, it must be combined with clear suffixes or a complete part number to determine its pre-installed configuration.

A complete ordering part number typically follows this structure:

3-9900-01P-XX-YY

3-9900-01P: Indicates this is a pre-assembled transmitter main unit.

XX: Represents the pre-installed input module code. For example:

F1: Pre-installed module for Signet flow sensors (pulse input).

P1: Pre-installed module for pH/ORP sensors (mV input).

C1: Pre-installed module for conductivity sensors (conductivity input).

YY: Represents the pre-installed output module code. For example:

A2: Pre-installed dual isolated 4-20mA analog output module.

R2: Pre-installed dual relay alarm output module.

Examples:

GF 3-9900-01P-F1-A2: A transmitter pre-installed with a flow input module and a dual 4-20mA output module, ready out-of-the-box to connect a Signet flow meter (e.g., P51530-P2) and output its signal.

GF 3-9900-01P-P1-R2: A transmitter pre-installed with a pH input module and a dual relay output module, directly usable for pH control and high/low alarm applications.

III. Core Advantages & Features

Out-of-the-Box Usability, Simplified Process: Eliminates the steps of separately ordering the main unit, input module, output module, and physically assembling them, reducing the potential for errors and accelerating project execution.

Retains All Modular Advantages: Despite being pre-configured, it retains all the benefits of the standard 3-9900 series:

Hot-Swap Design: Modules can still be replaced or upgraded online in the future.

Dual-Line Backlit Display: Clearly shows readings and status.

Powerful Compatibility: Supports a wide range of GF Signet sensors.

Robust & Durable: IP66 / NEMA 4X protection rating, wide power input range.

Optimized Inventory & Procurement: For commonly used configurations, purchasing a single part number suffices, simplifying Bill of Materials (BOM) management and inventory.

Ensures Compatibility & Reliability: Factory-assembled and tested, ensuring perfect compatibility between modules and the main unit, providing higher initial reliability.

IV. Typical Application Scenarios

Pre-configured models are particularly suitable for applications with clear, repetitive needs for specific functions:

Flow Monitoring & Transmission: 3-9900-01P-F1-A2 is widely used in systems requiring flow signals (e.g., cooling water, process water, chemical dosing) to be transmitted to a PLC/DCS.

pH/ORP Control & Alarm: 3-9900-01P-P1-R2 is commonly used in applications requiring relay alarms or simple control, such as wastewater neutralization, pool chlorination, and process pH control.

Conductivity Monitoring: 3-9900-01P-C1-A2 is suitable for applications like RO product water quality monitoring and cooling water cycle of concentration control.

V. Technical Specifications

Consistent with the standard GF 3-9900-01 series, specific specifications depend on the pre-installed modules:

Power Supply: 85-265 VAC or 18-36 VDC

Protection Rating: IP66 / NEMA 4X

Ambient Temperature: -20°C to 60°C

Display: Dual-line, 16-character backlit LCD

Input/Output: Defined by the pre-installed XX and YY module codes (e.g., 4-20mA, relay, Modbus RTU, etc.).