ATI Q46H/85 PAA System Part 2 – Analyzer Mounting
8
O&M Manual
Rev F (8/17)
1.3 Features
• Standard Q46H Analyzers have fully inputs and outputs. Analog outputs are additionally
completely isolated from each other
• Available in either 90-260 VAC or 12-24 VDC power supply systems. All features remain the
same in both variations.
• 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 low voltage 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 transmitter, or as one of the two outputs on the AC powered instrument.
PID includes manual operation feature, and diagnostic “stuck-controller” timer feature for relay
notification of control problems.
• Two analog outputs on the relay version may be configured to track PAA and temperature, PAA
and PAA, or PAA and pH. Both analog outputs can be individually programmed to fail to specific
values.
• Digital communication option for Profibus-DP, Modbus-RTU, or Ethernet-IP. See Q46 Digital
Communications Manual for Specifications.
• 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.
• Security lock feature to prevent unauthorized tampering with transmitter settings. All settings can
be viewed while locked, but they cannot be changed.
To Next Page
Loading...