ATI
Q46C2 2Electode Conductivity System
Part 1 - Introduction
5
O&M Manual
Rev-H (6/19)
1.2
Features
Power options for either AC or low voltage DC operation.
Two analog outputs on the relay version may be configured to track conductivity and
temperature. Both analog outputs can be individually programmed to fail to specific values.
A third 4-20 mA output is available as an option.
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.
Digital communication option for Profibus-DP, Modbus-RTU, and Ethernet-IP. See Q46
Digital Communications Manual for Specifications.
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.
Selectable PID controller on main analog output. PID includes manual operation feature,
and diagnostic “stuck-controller” timer feature for relay notification of control problems.
Large, high contrast, custom LCD display with LED back light provides excellent readability
in any light conditions. The second line of display utilizes 5x7 dot matrix characters for
clear message display.
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.
Selectable Pt1000 or Pt100 temperature inputs. Systems can also be hard-configured for
three-wire elements. Temperature element can be user calibrated.
Security lock feature to prevent unauthorized tampering with transmitter settings. All
settings can be viewed while locked, but they cannot be changed.
