Simple to operate
Reagentless models available
pH Electrode
Gravity Reagent Feed
Convenient to maintain
Designed to handle harsh environments
Ideal for a variety of applications
Multiple turbidity ranges available
Adjustable high reading alarm
Optional integral data logger
RS484 MODBUS communication
NEMA4X (IP66) rated controller
100-250 VAC (50-60 Hz)
1 Amp, 24 Watts max.

Amperometric Probe-type Residual Analyzer
Reagentless
Probe-type residual measurement of:
Free Chlorine
Total Chlorine
Chlorine Dioxide
Chlorite
Ozone
Hydrogen Peroxide
Peracetic Acid
Bromine
Transparent flow cell
Gravity flow cell with bubble trap for most applications
Pressurized flow cell for probes with self cleaning
Allows Simple Calibration & Maintenance
Available Range (Free Cl2): 0-0.5, 0-2, 0-5, 0-10, 0-20, & 0-200 PPM
Available Range (Total Cl2): 0-0.5, 0-2, 0-5, 0-10, 0-20 PPM
Included Standard:
Four (4) programmable 4-20 mA outputs
Modbus communication (RS485)
Four (4) programmable alarm relays
Complete P&ID control program
Automatic pH compensation software
Options:
pH probe
Data logger
Sample water PRV with 0-15 PSI pressure gauge
NEMA4X (IP66) rated controller
100-250 VAC (50-60 Hz)
1 Amp, 24 Watts max.
Profibus communication can optionally be supported

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

Simple to operate
Convenient to maintain
Designed to handle harsh environments
Ideal for a variety of applications
Multiple turbidity ranges available
Adjustable high reading alarm
Optional integral data logger
RS484 MODBUS communication
NEMA4X (IP66) rated controller
100-250 VAC (50-60 Hz)
1 Amp, 24 Watts max.

H2S Gas Detector
Chlorine Gas Detector (Cl2)
Ammonia Gas Detector (NH3)
Up to 16 sensors in any combination
Scanning display of all sensor readings
Up to 35 relays ? user adjustable, latching & non-latching, failsafe & non-failsafe
Two common alarm relays
Integral 95 dB horn
Isolated 4-20mA outputs
MODBUS communication (RS485)
Profibus communication can optionally be supported
Optional internal data logger
Optional battery backup
Optional temperature monitoring
Modular circuitry
Password protected setup
NEMA4X (IP66) rated controller
100-250 VAC (50-60 Hz)
1 Amp, 24 Watts max.

Up to two sensors in any combination
Back lit LCD display-2 line, 20 characters per line
Simple keypad operation
User friendly calibration and operation
Chlorine gas detector, H2S gas detector, Ammonia gas detector, Sulfur Dioxide gas detector, and Hydrogen gas detector
Two programmable alarm relays
Latching/non-latching relay option
Danger/Warning LED?s built-in
4-20 mA output standard
MODBUS (RS-485) communication
Profibus communication can optionally be supported
NEMA4X (IP66) rated controller
100-250 VAC (50-60 Hz)
1 Amp, 24 Watts max

H2S Gas Detector
Chlorine Gas Detector (Cl2)
Ammonia Gas Detector (NH3)
Up to 16 sensors in any combination
Scanning display of all sensor readings
Up to 35 relays ? user adjustable, latching & non-latching, failsafe & non-failsafe
Two common alarm relays
Integral 95 dB horn
Isolated 4-20mA outputs
MODBUS communication (RS485)
Profibus communication can optionally be supported
Optional internal data logger
Optional battery backup
Optional temperature monitoring
Modular circuitry
Password protected setup
NEMA4X (IP66) rated controller
100-250 VAC (50-60 Hz)
1 Amp, 24 Watts max.

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.

Available Maximum Capacities:
15,000 PPD (300 Kg/h) Cl2
9,600 PPD (180 Kg/h) SO2
3,000 PPD (60 Kg/h) NH3
ASME section VIII certified pressure chamber with ?L? certification stamp for lethal gas requirement
Stainless steel water tank w/ 1.5″ drain valve
Automatic water level control
Cathodic corrosion protection system
SCR controlled heaters for maximum life and minimal energy consumption
Available Heaters:
18 kW (Up to 10,000 PPD Cl2)
20 kW (Up to 12,000 PPD Cl2)
30 kW (Up to 15,000 PPD Cl2) for ver.1A
Utilizes recirculation pump for improved heat transfer efficiency
Electronic controller monitors vaporizer operation and superheat temperature
NEMA4X (IP66) rated controller
Usable with multiple Pressure Reducing Valve for Duty/Standby operation
MODBUS (RS485) communication
Profibus communication can optionally be supported
4-20mA outputs
Alarm relays

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.