TECHCROSS TCL4ECS On-Line Residual Chlorine Monitor Kit 20040T

TECHCROSS TCL4ECS On-Line Residual Chlorine Monitor Kit (Catalog No. 20040T)

The TECHCROSS TCL4ECS On-Line Residual Chlorine Monitor Kit (Catalog / MPN: 20040T) is a continuous colorimetric process analyzer engineered for the TECHCROSS Electro-Cleen™ System (ECS) Ballast Water Management System (BWMS). Built upon the HF Scientific CLX analytical platform and calibrated specifically to TECHCROSS marine specifications, this unit continuously measures Total Residual Oxidant (TRO) concentrations across a 0–15 ppm range during ballasting and de-ballasting operations.

Operating on Standard Methods 4500-Cl G (DPD Colorimetric Method) with a 515 nm LED optical light source, the analyzer automates sample flushing, cuvette zeroing, reagent dosing, and optical measurement. It transmits real-time concentration data to the ECS control cabinet (PDE) and Auto Neutralizing Unit (ANU), ensuring treated ballast water maintains target disinfection levels (typically 7.5 mg/L during ballasting) and complies with the strict <0.1 mg/L discharge limit mandated by IMO and USCG regulations.

The 20040T kit designation represents the complete shipboard assembly required for mounting, plumbing, and commissioning the TCL4ECS analyzer into a marine sample loop.

Model Details

• Manufacturer: TECHCROSS Inc.
• Model Designation: TCL4ECS
• Primary Catalog Number / MPN: 20040T
• System Sub-Assembly: TRO Sampling Unit (TSU) / Residual Oxidant Measurement Loop
• Standard Kit Sub-Component Catalog Numbers:
  • Mounting Kit: 24427T
  • Accessory Kit (includes T-Strainer Assembly): 24561T
  • Tubing & Cuvette Replacement Kit: 09950T
  • Alternate Configuration / High-Range Reference: 25096T (verify against vessel nameplate)

Compatibility

• Compatible BWMS Platforms: TECHCROSS ECS (all single-unit and multi-unit configurations, including ECS-150B through ECS-3000B series)
• Associated ECS Sub-Modules & Interfaces:
  • TECHCROSS TSU (TRO Sampling Unit) sample conditioning panels
  • TECHCROSS ESJ 1.1 ECU Signal Junction Box
  • TECHCROSS Analog Interface Module (AIM-V2107053)
  • TECHCROSS Control & Monitoring Modules (BCM-V2304013 / CPC Main Control Panel)
• Multi-Node Bus Configuration: Compatible with dual-sensor installations (e.g., CLX#1 / ADDR: 5 on the ballasting line and CLX#2 on the de-ballasting overboard discharge line).

Features

1. Continuous 0–15 ppm DPD Colorimetric Analysis: Uses a 515 nm optical LED and automated peristaltic/solenoid reagent dosing to eliminate manual titration delays and deliver repeatable TRO readings.
2. Dual Isolated Industrial Telemetry Outputs: Provides both a transformer-isolated 4–20 mA analog loop (600 Ω drive) and a 2-wire RS-485 Modbus RTU/ASCII interface for simultaneous PLC and alarm integration.
3. Integral Sample Pressure Regulation: Accepts raw ballast sample pressures from 0.34 bar to 10.3 bar (5–150 PSI) directly without external pressure-reducing valves.
4. Fail-Safe Programmable Form C Relays: Equipped with two independent 240 VAC 2 A mechanical relays (Alarm 1 and Alarm 2) wired fail-safe to trigger immediate hardware interlocks upon high TRO discharge or power loss.
5. Complete Service & Mounting Kit Inclusion: Supplied under Catalog No. 20040T alongside dedicated mounting hardware (24427T), accessory/strainer assembly (24561T), and cuvette/tubing maintenance kits (09950T) for rapid dry-dock or at-sea swap-outs.

Applications

• Ballasting Disinfection Control: Closed-loop oxidant measurement downstream of TECHCROSS Electrolytic Chamber Units (ECU) to regulate power output during uptake.
• De-Ballasting Neutralization Verification: Continuous monitoring prior to overboard discharge to verify TRO levels remain below regulatory thresholds (≤ 0.1–0.2 ppm) after neutralizing agent injection.
• Vessel Types: Oil and chemical tankers (installed outside hazardous zones or via isolated sample lines), bulk carriers, container vessels, LNG/LPG carriers, and offshore support vessels (OSVs).
• Industrial Water Treatment: Continuous residual chlorine verification in marine desalination, cooling water loops, and offshore utility water systems.

Frequently Asked Questions

What is the function of the TECHCROSS TCL4ECS 20040T in a Ballast Water Management System?

The TECHCROSS TCL4ECS (Catalog No. 20040T) is an on-line Total Residual Oxidant (TRO) analyzer that continuously measures residual chlorine levels from 0 to 15 ppm in treated ballast water. It transmits real-time concentration feedback to the TECHCROSS Electro-Cleen™ System (ECS) controller to regulate electrolysis current during ballasting and confirm safe neutralization before overboard discharge during de-ballasting.

What kits are included with Catalog Number 20040T?

The standard TECHCROSS 20040T monitor kit includes the main TCL4ECS colorimetric analyzer unit along with the Mounting Kit (24427T), the Accessory and T-Strainer Kit (24561T), and the Tubing/Cuvette Replacement Kit (09950T). Liquid DPD buffer and indicator reagents are ordered and shipped separately due to chemical shelf-life and transport rules.

How does the TCL4ECS communicate with the TECHCROSS ECS Main Control Panel?

The unit features both a transformer-isolated 4–20 mA analog current loop (capable of driving up to 600 Ω loads) and a 2-wire half-duplex RS-485 serial interface running Modbus RTU/ASCII protocol. Each analyzer on a ship’s RS-485 bus is assigned a unique slave node address (1–255) so the PLC can poll both ballasting and de-ballasting TRO sensors independently.

What are the sample water pressure and flow requirements for the TCL4ECS?

The analyzer incorporates an internal pressure regulator that accepts sample line pressures between 0.34 bar (5.0 PSI) and 10.3 bar (150 PSI) at fluid temperatures from 0°C to 55°C. During normal measurement cycles, the unit discharges 200 to 400 mL/min of sample and reagent mixture to an atmospheric drain line.

Why does the TCL4ECS display false low TRO readings in high engine room temperatures?

DPD colorimetric reagents are rated for a 30-day service life at ambient temperatures between 0°C and 40°C (32°F to 104°F). When ambient temperatures around the TRO Sampling Unit exceed 40°C, the DPD indicator degrades faster, reducing color development in the 515 nm optical cuvette and causing artificially low TRO readings.