Thermo Fisher Scientific Alpha COND 1000 - Manual (Page 15)

Operating Instructions Thermo Scientific Alpha COND 1000
7
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 2
CONTROLLER
OUTPUT
RANGE
CONFIGURATION
CALIBRATION
SET-POINT 1 Set value 1
Switch On /
Off ATC
Temp Coeff Pur / Lin Set Coeff
Controller type
Process temp.
(MTC)
MIN / MAX
Function
Set value 2
N.O./N.C.
contact
Proportional
Band
Cycle time
Current Ouput
0..20 / 4..20 mA
Range
Selection
Line Resistance
Adjustment
Set Cell
Constant K
Conductivity
at 0/4 mA
Display Cal
Ratio
Hysteresis 2
Calib. temp.
(MTC) Calibrate Pt100
Pick-up delay
contact 1
Dropout delay
contact 2
Set Filter
Function
Select /Load
Factory Default
Calibrate to
Standard
MIN / MAX
Function
Conductivity
at 20 mA
Hysteresis 1
Pick-up delay
contact 2
Dropout delay
contact 1
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.