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Hydro Instruments Chlorination Instrumentation

Hydro Instruments

Desirable in Disinfection

ChlorineChlorine (Cl2) is a gas, heavier than air, toxic, non-flammable and an economically available oxidizing agent that provides properties desirable in disinfection usage. Chlorine is available in one of three forms: sodium hypochlorite, calcium hypochlorite and liquid chlorine.

  1. Sodium hypochlorite, commonly called “liquid bleach”, is commercially available in strengths approximately 15% by weight. It can be added to the receiving stream by gravity, by the use of a chemical metering pump, or by physically dumping it.
  2. Calcium hypochlorite, generally referred to as “powder chlorine”. It contains 70% available chlorine. It can be added to the receiving stream by use of pellets or by mixing a solution of water and calcium hypochlorite, decanting the solution into a tank and using a small chemical feed pump.
  3. Liquid chlorine, known also as “chlorine gas”, is chlorine in its elemental form. It is available as a compressed gas of 100% strength. The most common ways of adding elemental chlorine to a receiving stream are to feed gas with a vacuum-operated solution feed system, or to feed the gas under pressure.

When comparing elemental chlorine as an oxidizing agent to powder (calcium hypochlorite) or solution (sodium hypochlorite), the oxidizing effect is the same. That is, all three produce hypochlorous acid, the oxidizing agent present for disinfection in water and waste water application. When chlorine gas is dissolved in water, it also reacts with the water to form hypochlorous acid and hydrochloric acid:


Feed Rate Controllers

Omni-Valve OV-110

Next Generation Automatic Omni-Valve for Feed Rate Control

Hydro Gas Omi Valve
Brochure Manual

OV-1000 Omni-Valve

New & Improved Automatic Omni-Valve for Feed Rate Control

Omni Valve 1000 by Hydro Instruments
Brochure Manual

Leak Detection and Alarm

GA-180 Gas Detection & Alarm

Up to 16 sensors in any combination

GA-180 AlarmBrochure Manual

GA-171 Gas Leak Detector

Up to two sensors per control module.

GA 171Brochure Manual

Residual Chlorine Analyzer

RAH-210 Analyzer

Amperometric
Residual Analyzer

RAH-210
Brochure Manual

RPH-250

Amperometric Probe-Style Chlorine Residual Analyzer

Hydro Instruments RPH 250
Brochure Manual

Automatic Changeover

CS-110 Automatic Changeover System

Allows for continuous chemical feed on a duty / standby system.
CS 110
Brochure Manual

Automatic Control Valve

CV-230 Control Valve

A Simple Valve for Automatic Proportional Feed Control

Brochure Manual

P&ID Controller

HC-220

Performs Set Point and PID control (Compound Loop).
HC-220
Brochure Manual

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Heritage Environmental

4440 Clear Shade Drive
Suite 1
Windber, PA 15963

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