Control Concept - EUTECH INSTRUMENTS ALPHA CON 1000 CONDUCTIVITY CONTROLLERTRANSMITTER (REVISION 3) Instruction Manual

Operating Instructions
4.3

Control Concept

The main function and sub-function groups are organised in a matrix format as shown below. These
functions can be accessed via the front keypad for configuration and selection of parameters.
MEASURE
CODE
tc
SET C
SET-POINT 1
SET-POINT 2
CONTROLLER
OUTPUT
RANGE
CONFIGURATION
CALIBRATION
The controller offers two levels of password protection: (1) for direct access to calibration function and
(2) for setting or editing specific controller parameters or functions in the SETUP mode to suit
individual requirements.
Note: The passwords are not user-defined and have been set by factory. It is very important to keep
these passwords strictly confidential to avoid unauthorised tampering of the system at all times.
Note: If the user reads parameters only, the controller automatically reverts to Measurement mode if
none of the keys is pressed for 30 seconds.
Temp Coeff Pur / Lin
Process temp.
Switch On /
(MTC)
Off ATC
MIN / MAX
Set value 1
Function
MIN / MAX
Set value 2
Function
N.O./N.C.
Controller type
contact
Range Current Ouput
Selection 0..20 / 4..20 mA
Set Filter
Function
Set Cell
Calibrate to
Constant K
Standard
7
Set Coeff
Calib. temp.
Calibrate Pt100
(MTC)
Pick-up delay
Hysteresis 1
contact 1
Pick-up delay
Hysteresis 2
contact 2
Proportional
Cycle time
Band
Conductivity Conductivity
at 0/4 mA at 20 mA
Display Cal
Ratio
αlpha-CON1000
Dropout delay
contact 1
Dropout delay
contact 2
Select /Load
Line Resistance
Factory Default
Adjustment