Online Monitoring & Control for Ozonation Systems!
The q46H/64 Dissolved Ozone Meter provides accurate and reliable ozone monitoring and control for your ozone treatment systems. The Q46H offers a variety of output including a 4-20mA output (x2), PID control, three adjustable relays, and digital communications.
There are 4 User Settable Ranges to choose from on q46 Ozone Monitor:
0-200 ppb (1 ppb resolution)
0-2.000 ppm (0.001 ppm resolution)
0-20.00 ppm (0.01 ppm resolution)
0-200.0 ppm (0.1 ppm resolution)
All ranges are user settable with display panel on the q46.
q46H/64 Ozone Monitor Specifications
Membrane-covered Polargraphic (flow type or submersible)
0-200.0 PPB, 0-2.000 PPM, 0-20.00 PPM, 0-200.0 PPM (mg/l)
90% in 60 seconds
± 0.01 PPM
± 0.01 PPM
< 0.01 PPM/month
Two isolated 4-20 mA, 500 Ώ load max. (3rd output optional)
Three SPDT, contacts rated 6 amp @ 250 VAC, 5 amp @ 24 VDC (3 additional low power SPST non-isolated relays optional)
NEMA 4X (IP-66) Polycarbonate, V-0 flammability
4 digit, 0.75” numeric LCD with 12 digit second line, LED back light
6 lbs. (2.7 Kg), includes flowcell and accessories
PVC and Titanium
25 ft. (7.5 m) standard, 100 ft. (30 m) max. with junction box
0-50 PSIG (Pressure controlled to fixed value)
Internal Pt100 RTD
Acrylic with barb fittings
7-15 GPH (0.5-1.0 LPM)
1/4” I.D. hose barb inlet, 1/2” I.D. hose barb drain for standard flowcell
CE marked to BS EN 61326-1:2006 Standard UL and CSA General Purpose
4.4”H x 4.4”W x 3.5”D (111 x 111 x 90 mm)
Wall or pipe mounting bracket supplied
Two PG-9 cord grips, 0.16-0.31” diameter cable
Operating: -40° to + 60°C Storage: -40° to + 70°C
All systems are supplied with one package of membranes, one 120 cc bottle of electrolyte, and one spare parts kit containing 3 each of all o-rings and special screws
Flowcell for Dissolved O3 / pH Combo system should be kept within 25’ for monitor.
Wide Detection Ranges - User Settable ranges from 0-200 PPB up to 0-200 PPM provide maximum application flexibility.
AC or DC Power Options - Power options include universal 100-240 VAC or 12-24 VDC
Analog Output - Two isolated 4-20 mA outputs are standard, with an option for a third output if required. Default setting provides analog outputs for ozone and temperature.
PID Output - Standard PID control function assignable to one analog output.
Relay Outputs - Three SPDT relays are standard
Clear Display - Back-lit large LCD display provides clear visibility in any lighting conditions. A scrolling second line on the display provides additional information and programming prompts.
pH Input Option- Enables monitor to measure both ozone and pH. One analog output may be assigned to the pH measurement, allowing remote monitoring and recording of both ozone pH simultaneously.
Flexible Mounting - NEMA 4X (IP-66) enclosure is suitable for wall, pipe, or panel mounting.
Sensor & Flowcell Options
Dissolved Ozone sensors require a steady flow of sample across the membrane at the tip of the sensing assembly. ATI offers a number of options for flowcells, including the standard constant-head overflow system, a sealed flowcell for pressures up to 50 PSI, and a low-volume flowcell where low sample flow is important. A 1-½” flow tee is also available for in-line applications with reliable constant flow and pressure conditions. For simplicity of installation, complete flow control assemblies are available.
The sealed flowcell allows for a controlled flow of water that can then be pushed under slight pressure to a drain location. Water flow must be well controlled externally to a flowrate of about 400 cc/min. Variable flowrate or pressure will cause unstable readings in the sealed flowcell. A special flow control element can be purchased ahead of this device. It is part number 55-0048.
Slight pressure, up to 2 PSI is acceptable on the cell to allow water to drain to a remote location through tubing.
Constant Head Flowcell
The dissolved ozone sensor will provide the best performance when used with the constant-head flowcell. When monitoring ozone levels below 0.5 ppm this method should always be used. Water pressure on the sensor and water flow are automatically controlled via the gravity flow chambers in the flowcell. Water flows of 400 - 500 cc/min will be used.
Low-flow sensor flowcell is used to reduce the amount of water used for ozone detection in water. This is a great option for applications where low water flow rates are required. Sample water flow rates of 150 – 300 cc/min can be used with the low-flow flowcell.
Passages in the low-flow flowcell are very small, therefore, clean water is required. Flow rate can be measured and controlled by a rotometer installed on the inlet side of the flowcell. Water flow should not vary more than 5 cc/min.
The Flowcell Sensor is used for each of the flowcell systems shown above. There are threads on the sensor body that allow the sensor to thread into the low-flow sensor flowcell and the sealed flowcell. The long smooth end will fit snugly in the constant-head flowcell and seal with o-ring seals integrated into the constant-head flowcell.
For submersible applications we offer the submersion sensor. This sensor can be dropped into a tank of water for ozone measurements in water. This sensor could also be mounted into the side of a tank permanently.
Ensure no more than 2-3 PSI of water present is pressure on the sensor at any time. Water pressure must also be consistent for accurate measurements of ozone in water.
The q46H Ozone Sensors must be calibrated on-site with the customers' water in process. As pressure and water flow will affect the calibration it is important to perform the calibration in the specific process the sensor will be used to measure ozone in.
Calibration frequency will depend upon ozone concentration in the water and water quality. Higher dissolved ozone levels will consume the electrolyte solution and membrane quality quicker than low levels of ozone. At ozone levels below 2.0 ppm we find the q46H can maintain stable readings for 6-months at a time between calibrations. However, at ozone levels greater than 20 ppm calibration should be performed at least monthly and ozone levels greater than 100 ppm will require weekly or even daily calibration.
A bottle of electrolyte solution and a pack of 10 membranes is shipped with each q46H Dissolved Ozone Meter.
Calibration should be performed with a colorimetric dissolved ozone test kit. Below are a few kits we suggest and the potential applications for each.
I-2022 SAM Dissolved Ozone Meter
Best for low level detection of ozone, below 0.75 ppm
I-2019 SAM Dissolved Ozone Meter
Best for high level detection of ozone, direct read to 5.0 ppm
- Additional Information
Manufacturer ATI Call For Price No Gas Ozone (O3) 4-20 mA Output Yes Relays 2 Alarm Relays + 2 Control Relays Voltage Output None Power Requirements 12-30 VDC, 120 VAC or 220 VAC 50/60 hz. please specify desired voltage when ordering Datalogging No Warranty 1 Year