ATI Q46H

Features : 

• Available in either 90-260VAC or 12-24 VDC power supply systems. All features remain the same in both variations.
• High accuracy, high sensitivity system, measures from 20 ppb to 200.0 ppm through 4 internal automatic ranges. User ranges of 200.0 ppb, 2.000 ppm, 20.00 ppm, or 200.0 ppm.
• Output Hold, Output Simulate, Output Alarm, and Output Delay Functions. All forced changes in output condition include bumpless transfer to provide gradual return to on-line signal levels and to avoid system control shocks on both analog outputs.
• Three 6 amp SPDT relay outputs and two analog 4-20 mA outputs are standard. Software settings for relay control include setpoint, deadband, phase, delay, and failsafe. An optional 3- relay card, for 0-30 V signals, is available to bring the total to 6 relays.
• Selectable PID controller on main analog output. PID controller can operate with instrument configured as loop-power analyzer or as one of the two outputs on the AC powered instrument. PID includes manual operation feature, and diagnostic “stuck-controller” timer feature for alarm output of control problems.
• Digital communication option for Profibus-DP, Modbus-RTU. More versions pending. See Q46 Digital Communications Manual for Specifications.
• Two analog outputs may be configured to track chlorine and temperature, chlorine and chlorine, or chlorine and pH. Both analog outputs can be individually programmed to fail to specific values. An optional third analog output is available, providing separate outputs for chlorine, pH, and temperature.
• Selectable automatic pH compensation feature. Enables active pH compensation of free chlorine readings – requiring no pumps or buffers to maintain a constant pH level. The pH reading can also be sent to one of the analog outputs for complete pH + chlorine monitoring. The pH correction can be done using ATI’s optional pH sensor or using an input signal of 0.4-2.0 VDC (4- 20 mA across a 100 ohm resistor) from another pH monitor. Input from another monitor requires the use of a loop isolator.
• Selectable Output Fail Alarm feature allows system diagnostic failures to be sent to external monitoring systems.
• Diagnostic messages provide a clear description of any problem with no confusing error codes to look up. Messages are also included for diagnosing calibration problems.
• Quick and easy one-point calibration method and sensor zero-cal. To provide high accuracy, all calibration methods include stability monitors that check temperature and main parameter stability before accepting data.
• High accuracy three-wire Pt100 temperature input. Temperature element can be user calibrated.
• Security lock feature to prevent unauthorized tampering with analyzer settings. All settings can be viewed while locked, but they cannot be changed.

Q46H-62 Free Chlorine Measurement System

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Monitor Your Chlorine Reagent Free!

ATI’s Chlorine Monitor is an upgraded version of our proven Q45H system for continuous water quality monitoring of free or combined chlorine. Monitor capabilities have been expanded to include options for a 3rd analog output or for adding additional low power relay outputs. Digital communication options for Profibus DP, Modbus RTU or Ethernet IP have been added, as well.

The Q46H system uses a polarographic membraned sensor to measure chlorine directly, without the need for chemical reagents. When needed, automatic pH compensation may be added for highest free chlorine measurement accuracy. Systems are available to provide 4-20 mA outputs for chlorine, pH, and temperature to allow easy CT calculations.

Q46H systems are economical to purchase, economical to maintain, and provide long term accuracy and reliability for your chlorine monitoring needs.

EASY INSTALL! Want to simplify installation? ATI can supply the Q46H complete with sample flow controls mounted to a PVC back plate ready to mount. Connect power, water sample, and analog/relay outputs and you’re ready to go. Systems are available with or without a flow switch for remote indication of loss of sample.

SENSOR STABILIZATION

Chlorine sensors, especially free chlorine, require up to 8 hours of stabilization time when first installed or after membrane change. ATI offers a battery powered “polarizer” that can be used to stabilize a spare sensor so it is ready to run within a few minutes of installation. Polarizers simply plug into the sensor connector and require no adjustments.

PRODUCT FEATURES

Free or Combined Chlorine

Q46H Monitors are factory set for either Free or Combined Chlorine measurement, but can easily be converted from one to the other in the field.

Economical Operation

Reagent-less operation and low parts cost makes the Q46H your best choice for chlorine monitoring applications in potable water, wastewater, cooling water, or high purity water systems.

Automatic pH Compensation

For free chlorine monitoring under widely varying pH conditions, automatic pH compensation may be added to maintain the highest measurement accuracy at pH levels up to 9.5.

Dual Chlorine/pH Monitoring

Even when pH correction is not required, adding a pH sensor to the system converts the monitor to a dual analyzer, providing 4-20 mA outputs for both chlorine and pH.

Flexibility

Programmable range options from 0-200 PPB up to 0-200 PPM provide maximum application flexibility.

AC or DC Power Options

Power options include universal 90-260 VAC or 12-24 VDC.

Analog Output Options

Two isolated 4-20 mA outputs are standard, with an option for a third output if required. Default setting provides analog outputs for chlorine and pH.

PID Output

Standard PID control function assignable to one analog output.

Digital Communications

Available in either Profibus-DP, Modbus-RTU or Ethernet-IP.

Relay Outputs

Three SPDT relays are standard, with relay functions programmable for alarm, control, or trouble indication. Three additional low power relays available as an option.

Flexible Mounting

NEMA 4X (IP-66) enclosure is suitable for wall, pipe, or panel mounting.

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