Gravity Reagent Feeder

• Amperometric Online Residual Analyzer.
• For Free Chlorine, Total Chlorine, Chlorine Dioxide, Bromine or Iodine measurement.
• Available with pH & temperature compensation without buffer chemicals for Free Chlorine.
• Provides continuous measurement and rapid response.
• Provides continuous temperature monitoring and compensation.
• Four 4-20 mA outputs (selectable between residual, pH/ORP, Temperature, Turbidity, and control signals)
• Four alarm relay.
• Includes complete PID Control Program (standard)!
• Password Protected Settings.
• Includes complete P&ID Control Program
• MODBUS (RS485) communication
• Optional "Data Logger" - record information and retrieve it using any Office programs on computer.
• Also available with "Reagent Feed Pump Kit" - supplied with Peristaltic Pump for feeding reagent to the analyzer.

• Amperometric Probe-Style Chlorine Residual Analyzer
• For Free -or- Total Chlorine measurement (Also usable for Chlorine Dioxide)
• Transparent Inlet & Probe Flow Cells
• Allows Simple Calibration & Maintenance
• Available Range (Free Cl2): 0-2, 0-5, 0-10, 0-20, 0-100, 0-200 PPM
• Available Range (Total Cl2): 0-2, 0-5, 0-10, 0-20 PPM
• Automatic pH Compensation Software Included (Standard)
• Optional pH Probe
• PRV with 0-15 PSI Pressure Gauge, Sample Control Valve & Flow Meter Provided (Standard)
• Cross-Sensitive for: Chlorine Dioxide, Ozone, Iodine, Bromine, Bromamine, Di & Trichloramine
• Optional Data Logger
• Includes complete PID Control Program!
• Provides two 4-20 mA outputs and one alarm relay

The RAH-DL1S data logger is an electronic device that automatically collects and records data over a period of time from the Hydro Instruments Residual Chlorine Analyzers.

The data logger utilizes an internal flash memory card for data storage and is programmable as to how often data from the attached residual analyzer is captured and stored. This allows for a comprehensive look of the sample water conditions being monitored over time similar to that of a circular chart recorder.

• Eliminates wasted water from analytical devices.
• Accomodates up to 20 gal / hour of sample water flow.
• Provides safety / overflow connection and tubing.
• Provides atmospheric pressure manifold to prevent suction being drawn on analysis instrument / device.

for Residual Chlorine Analyzers

• High Range Turbidity Meter
• Simple to operate
• Convenient to maintain
• Designed to handle harsh environments
• Ideal for a variety of applications
• Low and high range readings (0-50 NTU & 0-1000 NTU)
• Adjustable alarms
• Optional integral data logger
• RS484 MODBUS communication

• Up to 16 sensors
• Up to 35 relays - user adjustable, latching & non-latching, failsafe & non-failsafe
• Two common alarm relays
• Integral 90 dB horn
• Isolated 4-20mA outputs
• MODBUS communication
• Optional battery backup
• Optional temperature monitoring
• Modular circuitry
• Password protected setup

*) Available with additional enclosure for Outdoors use! complete set up with external alarm light & horn

**) Available with Side Mounted Sensor Enclosure

• Up to four sensors per control module.
• Electrochemical sensor.
• Includes six alarm relays.
• Backlit LCD Display-2 line, 16 characters per line.
• Simple keypad operation.
• User friendly calibration and operation.
• Available for Cl2, SO2, NH3, H2S, O3, ClO2, H2, O2, NO, NO2, HCl, CO
• Latching/Non-Latching & Failsafe/Non-Failsafe outputs.
• Danger/Warning LED's & 90 dB audible alarm built-in.
• 12 hour battery backup option.
• 4-20 mA output available.
• RS-232 output option.
• Password Protected Settings.

*) Available with additional enclosure for Outdoors use! complete set up with external alarm light & horn

**) Available with Side Mounted Sensor Enclosure

• Up to two sensors per control module.
• Electrochemical sensor.
• Backlit LCD display-2 line, 20 characters per line.
• Simple keypad operation.
• User friendly calibration and operation.
• Available for Cl2, SO2, NH3, H2S, O3, ClO2, H2, O2, NO, NO2, HCl, CO
• One common relay for all alarm conditions.
• Latching/non-latching relay option.
• Danger/Warning LED's built-in.
• 4-20 mA output standard.
• RS-232 output.
• Password Protected Settings.

*) Available with additional enclosure for Outdoors use! complete set up with external alarm light & horn

**) Available with Side Mounted Sensor Enclosure

An external alarm light with combination audible horn is an electronic device designed to alert operators and other personnel both visually and audibly to a specific danger.

The new and improved Omni-Valve for automatic feed rate control.

• Automatic feed control of Chlorine (Cl2), Sulfur Dioxide (SO2) & Ammonia gas (NH3) - Liquid feed control of Sodium Hypochlorite (NaOCl) and *others.
• Elongated linear drive design for increased accuracy - Eliminates rotary motion for minimal wear
• Maximum Capacity: 10,000 PPD (200 kg/h) Cl2
• 2 line x 20 character display.
• Control Modes: Manual, Remote, Flow Pacing, Proportional, Residual, ORP, Compound Loop (PID), Step-Feed, Dual Input Feed Forward and Dual Set-Point
• Modbus Communication (RS-485)
• Two relay contact alarm outputs
• Two standard 4-20 mA outputs
• Ten point linearization process for accurate and repeatable control
• Available as a special order item for pressure feed applications (20 PSI maximum).

*Consult factory for options.

Next Generation Automatic Valve for Feed Rate Control

• Automatic feed of Chlorine gas, Sulfur Dioxide gas, Ammonia gas, Sodium Hypochlorite & other liquid chemicals.
• Linear drive design eliminates rotary motion - means minimal wear.
• Max Capacity: 6000 PPD (120 kg/h) Gas or 10 GPM Liquid Chemical Feed.
• 2 line x 20 character display.
• Control Modes: Manual, Remote, Flow Pacing, Proportional, Residual, ORP,Compound Loop (PID), Step-Feed and Dual Input Feed Forward.
• *Modbus Communication (RS-485)
• Two relay contact alarm outputs
• Two (2) standard 4-20 mA outputs.
• Ten point linearization process for accurate control.
• Includes delays, filters and threshold adjustment.
• Available as a special order item for pressure feed applications (20 PSIG or less).
• Password Protected Settings.

*MODBUS is only available in units with the new hardware that started shipping after April 2013.

A Simple Valve for Automatic Proportional Feed Control

• Compact design and simple proportional programming.
• Automatic feed of Chlorine gas, Sulfur Dioxide gas, Ammonia gas, Sodium Hypochlorite & other liquid chemicals (vacuum systems).
• Excellent accuracy and repeatability.
• Control Modes: Manual and Automatic (Proportional / Flow Pacing).
• Capacities up to 6000 PPD (120 kg/h) gas or 10 GPM liquid feed.
• Linear drive design eliminates rotary motion -ensures minimal wear.
• Ten point linearization process for accurate feed control.
• 2 line x 20 character display.
• Contact alarm relay and (2) 4-20 mA outputs standard.
• NEMA 4X Enclosure.
• Available as a special order item for pressure feed applications (20 PSIG or less).
• Password Protected Settings.

• 10,000 PPD (200 Kg/h) Cl2,
8,000 PPD (150 Kg/h) SO2 or
2,500 PPD (50 Kg/h) NH3
• ASME section VIII certified pressure chamber
• Stainless steel water tank w/ 1.5" drain valve
• Automatic water level control
• Cathodic corosion protection system
• 18 kW heater w/ SCR controller for maximum life and minimal energy consumption
• Electronic controller monitors vaporizor operation and superheat temperature
• Usable with multiple Pressure Reducing Valve for Duty/Standby operation
• MODBUS (RS485) communication
• 4-20mA outputs
• Alarm relays

Vaporizer (Evaporator) Accessories are also available in the accessories web page.

• Allows for continuous chemical feed on a duty / standby system.
• Provides electronic indication of system status for remote monitoring.
• Can be used with Chlorine, Sulfur Dioxide and Ammonia Gases.

* Analog Type is available!
Please see our "Accessories" page

• Compatible with any brand of Chemical Dosing Pumps (Metering Pumps)!
• Performs Set Point and PID control (Compound Loop).
• Accepts two 4-20mA inputs: proportional and set point process variable signals plus remote dosage / manual control input.
• Provides two 4-20mA output signals for control and monitoring.
• Alpha-Numeric 2 line x 20 character display.

• Compatible with any brand of Chemical Metering Pumps!
• Performs Step-Feed Control (up to four steps).
• Also performs Set Point & PID control (Compound Loop).
• Accepts two 4-20mA inputs : one proportional and one set point.
• Provides 4-20mA output signals for control.
• Alpha-Numeric 2 line x 20 character display.