+GF+ 3-9900.394 - Cond-Measure/Resist-Calculate - Plug-In Field Replaceable 9900 Transmitter Cond/Res Expansion Module
The 3‑9900.394 is a field‑installable Direct Conductivity/Resistivity Module that interfaces Signet 2819 -2823 / 2839-2842 electrodes straight into the 9900 SmartPro ® base unit, providing signal filtering, conditioning, and ±2% reading accuracy with auto temperature compensation.
It enables the 9900 to drive isolated 4 -20 mA / relay actions for RO/DI quality interlocks, regenerate triggers, rinse accept/reject, and effluent conductivity alarms — no extra transmitter needed, just slot it in and configure via the ¼‑DIN display.
| Parameter | Specification |
|---|---|
| Product Type | Direct Conductivity / Resistivity Module (Plug-in Module) |
| Model / MFR # | 3‑9900.394 |
| Order Code | 159 001 699 |
| Compatibility | Signet 9900 Series Transmitters (Panel Mount & Field Mount) |
| Core Function | Interfaces standalone conductivity sensors directly to the 9900 Transmitter |
| Compatible Sensors | Signet 2819‑2823 and 2839‑2842 Conductivity Electrodes |
| Measurement Support | Conductivity, Resistivity, and Salinity |
| Signal Conditioning | Provides filtering and conditioning for sensor signals |
| Power Supply | 12 - 32 VDC (24 VDC nominal), external power required |
| Cable Length | Up to 30 m (100 ft); 2819/2839 limited to 4.6 m (15 ft) |
| Wiring | Terminals accept 16 to 28 AWG wire |
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.
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