CT 100S | Electronet

Product Description

CT-100S Conductivity / TDS Transmitter is a reliable, two-wire loop-powered transmitter designed for accurate online conductivity and TDS measurement in industrial and process applications. It accepts conductivity electrodes with cell constants 0.01, 0.1, and 1, converting the measured signal into a stable 4–20 mA output with optional HART communication. The transmitter features a backlit LCD display for real-time indication and offers auto or manual temperature compensation using RTD PT-100 / PT-1000. With high accuracy of ±0.25% of full scale, fast response time, and low power consumption, CT-100S ensures dependable performance. Its non-volatile memory retains settings during power failures, enhancing operational reliability. Housed in weatherproof IP67 or CMRI IIA/IIB flameproof enclosures, CT-100S is ideal for water treatment, chemical, pharmaceutical, and industrial process monitoring applications.

Product Parameters

Configure the transmitter and electronics based on application, environment, and compliance requirements.

Parameter	Specification
Electronics Transmitter Accuracy	±0.25% F.S.
Isolation	1.4 KV between Input, Output & Power Supply
Display	Local LCD Display with Backlit
Output Type	4–20 mA DC / 4–20 mA with HART (Generic)
Sensor Connection	1) BNC Connector 2) Terminal Connection
Power Supply	24 V DC Two Wire Loop Powered
Power Consumption	< 50 mW
Electronic Protection Class	Flameproof CMRI IIA IIB / Weatherproof IP-67
Response Time	< 500 mSec
Temperature Coefficient	±0.01 % per °C
Temperature Compensation	RTD PT-100 / RTD PT-1000
Dimensions	155 mm (H) × 105 mm (W) × 130 mm (D)
Conduit Entry	1) M20 × 1.5 (F) 2) ½” NPT (F)
Mounting	2” Pipe Mounting
Weight	Approx. 1 kg
Housing	Cast Aluminium with Epoxy Coating / SS316 (NEMA 4X)
Ambient Conditions	Temp. -20 to 70 °C, Humidity 5–95% Non-condensing
Cell Constant	0.01 / 0.1 / 1
Input Type	From Conductivity Electrode
Calibration	Factory Calibrated - 1) 0 to 999.99 μS/cm for cell constant 0.1
	2) 0 to 99.99 μS/cm for cell constant 0.01
	3 ) 0 to 9999.99 μS/cm for cell constant 1

Need more technical details?

Download the complete product catalogue for detailed specifications, dimensions, certifications, and application guidance.

Download Catalogue Enquire Now

Applications

Electronet instruments are widely deployed across multiple industries and utilities for reliable monitoring and control of critical process parameters.

Industry	Key Applications
Water & Wastewater	Monitoring conductivity and TDS in treatment plants, pipelines, and effluent systems
Chemical & Petrochemical	Measuring solution concentration, process water quality, and chemical dosing accuracy
Power Generation	Conductivity monitoring in boiler feedwater, cooling water, and condensate systems
Food & Beverage	Monitoring water quality and process liquids for production consistency and safety
Pharmaceuticals & Biotechnology	Conductivity/TDS monitoring in process water, bioreactors, and formulation systems
Pulp & Paper Industry	Monitoring chemical concentrations and water quality in pulping and bleaching processes
Marine & Shipbuilding	Conductivity/TDS measurement in seawater systems, ballast, and cooling circuits
Metals & Mining	Monitoring process water and slurry conductivity for process optimisation
HVAC & Building Automation	Water quality monitoring in cooling towers and chilled water systems
Semiconductor & Electronics	Conductivity/TDS monitoring for ultra-pure water and process control