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Model Q45H/64 Dissolved Ozone Monitor
from Analytical Technology
Model Q45H/64 Dissolved Ozone Monitor

The Model Q45H/64 Dissolved Ozone Analyzer is the ideal choice for on line monitoring and control of ozonation systems. Capable of measuring DO3 concentration as low as 0-200 ppd full scale, the system provides the sensitivity needed for demanding applications such as pharmaceutical grade water or semi conductor wash water. And with the standard 0-2 ppm range, the monitor is ideally suited to water bottling systems or municipal water treatment. Even high range applications requiring 0-20 or 0-200 ppm can be easily accommodated.

Utilizing a highly selective polarographic membraned sensor, dissolved ozone can be monitored interference free, with little maintenance is required can be done in just a few minutes. Installation is simple and you can be up and running in a few hours.

Available in loop powered, AC operated, or battery operated portable versions, the Q45H/64 is well suited for almost any DO3 measurement requirement. Even a portable data logging version is available for temporary installation or process studies. And for even more flexibility, the instrument is available with an optional pH sensor input that allows a single unit to provide both dissolved ozone and pH analog outputs.

Features

  • Flexible Range Capability: Standard Q45H monitors are programmable for display ranges of 0-2, 0-20, 0-200 ppm with analog outputs scalable within the display range to any desired value. For low level applications, a display range of 0-200 ppd may also be selected
  • Loop Powered, AC or Battery Versions: For ozone measurement only a loop powered system is available. AC powered versions provide for PID, relay and dual output functions. A unique battery operated unit with internal data logger is also available.
  • Large, Dual Line Display: Large, high contrast display for easy viewing of ozone concentration. Second line scrollable through pH, temperature and other information
  • PID Control Output: Standard PID control function can be configured quickly and easily.
  • Dual Measurement Capability: On AC powered units, choose the optional pH sensor and get outputs for both ozone and pH.
  • Assignable Analog Outputs: Dual analog outputs can be configured to track ozone and temperature, ozone and ozone or ozone and pH.
  • Two Alarm Relays: AC operated systems provide two relays that are configurable for either "control mode": or "alarm mode" of operation.
  • Universal Enclosure: NEMA 4X (IP-66) enclosure is suitable for panel, wall or pipe/header mounting.

Dissolved ozone sensors are normally installed in a flowcell, with sample piped to the flowcell using 1/4" id sample tubing. The standard flowcell arrangement uses a constant head overflow system to ensure stable flow and pressure across the sensor regardless of sample line fluctuations. A low volume flowcell is also available for installations where minimum sample flow is desired and sample flow and pressure can be carefully controlled.

For ozone measurements in reactor chambers often used in large municipal water treatment systems, a submersible sensor is available. This sensor is easily pipe mounted and can be submerged up to 25 feet.

A standard feature of the Q45H/64 is a PID control function. To use this function, the primary 4-20 mA output from the monitor must be assigned for PID control. Control setpoint and PID variables for proportional, integral and derivative are easily entered using front panel push buttons. The isolated 4-20 mA output can then be used as the control input to many types of ozonators. While not suitable for systems with rapid flow changes requiring compound loop control, the Q45H PID function can handle many stable flow applications.

The Q45H/64 is designed for exceptional flexibility to meet a variety of monitoring applications. In its simplest form, the unit is a loop powered transmitter operating from standard 24 VDC power supplies. This means easy integration into many DCS, PLC and SCADA systems. Loop powered instruments include the PID output function

For applications where the second analog output is desired or where alarm relay functions are needed, an AC powered system is available. Operation from AC power allows the user to utilize analog outputs for both ozone and pH or for independent PID and ozone outputs or simply for ozone and temperature outputs.

For even greater versatility, a portable unit powered by a standard 9V battery is also available. The dual 0-2.5 VDC outputs are assignable to ozone concentration and temperature. This instrument can be supplied with an internal data logger, making it ideal for short term monitoring at remote sites. The unit will run for 10 days on a single battery and the data logger will store up to 32,000 data points, easily enough for 10 days of data at 1 minuted intervals.

Specifications - Monitor

Display Range 0-200.0 ppb, 0-2.000 ppm, 0-20.00 ppm, or 0-200.0 ppm
Accuracy +/- 0.02 ppm or 0.5% of FS
Repeatability +/- 0.01 ppm or 0.3% of FS
Linearity 0.1% of full scale
Zero Drift < 0.01 ppm per month
Display Large 4 digit main display, 0.75" characters, 12 digit alpha numeric second line display
Power 16-35 VDC for loop powered unit, 115/230 VAC 50/60 Hz, 10 VA max, 9 volt battery operated portable
Control Relays Two SPDT relays, 6A., 250 VAC 5A@24VDC, resistive
Relay Mode Programmable for control or alarm function
Analog Output Isolated 4-20 mA, 550 ohms max load. Two assignable 4-20 mA outputs, 550 ohms max (AC only)
Data Logger Battery version only, stores 32,000 data points
Operating Temperature -20 to 60°C
Operating Humidity 0-95% non-condensing
Enclosure NEMA 4X (IP-66) polycarbonate wall, panel or pipe mount
Weight 5 pounds

Specifications - Sensor

Sensor Membrane covered polarographic sensor
Wetted Materials Noryl and 316 stainless steel
Sensor Cable 25' standard, 100' maximum
Response Time 90% in 60 seconds
Temperature Limits 0-50°C
Sample Inlet 1/4" id hose barb
Sample Outlet 1/2" id hose barb

Ordering Information

For pricing please call AFC International at 800-952-3293, 219-987-6825 or fax 219-987-6826 or email sales@afcintl.com.
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AFC International, Inc.
PO Box 894, DeMotte, IN 46310
715 SW Almond St, Ste C, DeMotte, IN 46310
800-952-3293 219-987-6825 Fax 219-987-6826
eMail: sales@afcintl.com

Last Revised: 1/23/07