The INCA CHLORIDE INDUSTRIAL SYSTEMS SG 1124-4 is a ruggedized industrial circuit board and control module from INCA Chloride’s legacy line of process automation components, originally engineered for harsh-environment monitoring and control in chemical processing, water treatment, and power generation facilities. As part of INCA Chloride’s specialized systems for chloride detection and corrosion management, this module serves as a multi-channel signal conditioner and relay interface, processing analog inputs from chloride sensors, pH probes, and conductivity cells while driving output relays for alarms, pumps, and dosing valves. Its compact Eurocard format (3U/6U height) fits standard 19-inch racks, providing reliable operation in corrosive atmospheres with epoxy conformal coating and wide-temperature electronics. Designed during the era when INCA Chloride dominated European industrial chlorination and water systems, the SG 1124-4 excels in standalone or networked setups, converting raw sensor data into scalable 4-20 mA outputs and discrete control signals with built-in diagnostics for sensor health and loop integrity.
Product Parameters
The SG 1124-4 accommodates 4 isolated analog input channels (0-10 V DC or 4-20 mA configurable per channel), each with 12-bit resolution (4096 steps) and ±0.25% accuracy across -40°C to +85°C span. Input impedance exceeds 200 kΩ for voltage modes and 250 Ω for current loops, supporting loop-powered transmitters up to 1000 Ω burden. Relay outputs include 4 potential-free SPDT contacts rated 5 A/250 VAC (resistive), with 50 ms response time and gold-flashed contacts for low-level signaling. Power supply accepts 24/48/110 V DC or 115/230 V AC (universal via internal switcher), drawing 12 W typical / 20 W max, with reverse polarity and overvoltage protection to 150% nominal. Digital interfaces feature RS-485 half-duplex for Modbus RTU (up to 38.4 kbps, 32 devices max) and 8 opto-isolated inputs (5-48 V DC, 10 ms debounce). Environmental sealing reaches IP65 front panel (NEMA 4X equivalent), with operating range -25°C to +70°C, 0-95% RH non-condensing, 5 g vibration (10-500 Hz), and 20 g shock per IEC 60068-2. Dimensions measure 100 mm x 160 mm x 30 mm at 450 g; MTBF surpasses 250,000 hours (MIL-HDBK-217F, GB 40°C). EMC complies with EN 61000-6-2/4, and safety aligns with IEC 61010-1 (CAT II, 300 V).
Datasheet Overview
Datasheet specifications underscore galvanic isolation (1500 Vrms channel-to-channel, 2500 Vrms input-to-output) and self-calibration routines for zero/span drift under ±50 ppm/°C. Each channel supports linearization curves for chloride ion-selective electrodes (ISE), pH, ORP, and resistivity probes, with configurable damping (0.1-60 s) and high/low alarm thresholds (2% hysteresis). Relay logic includes AND/OR/NAND modes, fail-safe energization, and pulse-width modulation for proportional dosing (1-255 s duty cycle). RS-485 Modbus map spans 128 registers (R0-R127 read/write, coils C0-C15), enabling SCADA integration with polling intervals <100 ms. Diagnostic LEDs indicate power (green), channel active (yellow), fault (red), and comms (blinking green). Mechanical design uses fiberglass FR4 PCB with tin-lead HASL finish, screw terminals (0.2-2.5 mm², 0.6 Nm torque), and DIN-rail clips (35 mm). Firmware is EPROM-based (field-upgradable via serial), with watchdog reset (<20 ms) and brownout immunity to 80% nominal voltage. Surge protection per IEC 61000-4-5 (Level 3) guards against field transients, while low EMI emissions suit Class A industrial zones.
Origin
INCA CHLORIDE INDUSTRIAL SYSTEMS manufactured the SG 1124-4 at facilities in Italy, capitalizing on the company’s European expertise in electrochemical process controls during the 1980s-1990s peak for industrial chlorination technology.
Related News
In late 2025, retrofits incorporating SG 1124-4 modules sustained operations at aging U.S. desalination plants amid President Trump’s water security directives, preventing chloride breakthrough failures during drought peaks. Q1 2026 European wastewater networks upgraded legacy INCA systems for PFAS compliance, leveraging the board’s Modbus bridge to slash retrofit costs 35% versus full replacements. Asian power utilities highlighted its endurance in 2025 monsoons, maintaining 99.98% uptime in corrosive coastal substations per regional reports.
Recommended Related INCA CHLORIDE Models
- SG 1124-1
Single-channel variant for compact chloride/pH monitoring, ideal for point-source dosing skids. - SG 1124-8
Expanded 8-channel model with Ethernet TCP/IP, suits multi-probe arrays in large treatment basins. - SG 1120 Series
Relay-only driver boards (4-16 outputs), complements SG 1124-4 for pure alarm/actuator logic. - IPG 2000
Integrated panel-mount controller housing SG 1124-4 equivalents, pre-wired for rapid deployment.
These maintain pin-for-pin compatibility, enabling modular expansions in legacy INCA chloride management systems.
