The 3‑9900‑1P is a ¼‑DIN panel‑mount multi‑parameter transmitter accepting flow, pH/ORP, cond/res, pressure, level, DO, or 4-20 mA (via 8058 iGo®). Features include one isolated 4-20 mA standard output, NEMA 4X front rating, and field-expandable capabilities via Relay/Batch/Modbus/2nd‑4-20/Cond modules.

Drives pump/valve interlocks, dosing control, and alarms on one parameter in applications including RO/DI, WW, chemical dosing, and cooling towers. Start with the base unit and add modules as the loop expands—no PLC rewrite required.

Xiamen Zhicheng Automation Technology Co., Ltd. is a professional supplier of industrial automation products and solutions, dedicated to providing reliable, cost-effective, and high-performance products to customers worldwide.

With extensive experience in industrial automation and process control, we specialize in supplying a comprehensive range of automation components for industries such as oil & gas, power generation, petrochemical, water treatment, manufacturing, and industrial infrastructure.

• PLC Interface Modules
• I/O Systems and Interface Solutions
• Signal Isolators and Signal Converters
• Relays and Relay Modules
• Industrial Power Supply Units
• Control Valves and Actuators
• Industrial Pumps
• Process Instrumentation

• Professional industrial automation supplier
• High-quality products with competitive pricing
• Fast response and technical support
• Reliable supply chain and stable product availability
• Customized solutions for industrial applications
• Global export experience and customer-oriented service

We are committed to helping customers improve operational efficiency, system reliability, and process performance through dependable automation products and professional support.

Whether you are an end user, system integrator, engineering contractor, or distributor, Xiamen Zhicheng Automation Technology Co., Ltd. is ready to become your trusted partner in industrial automation.