Ecolab LMI 02 - Conductivity Control Specifications; Conductivity Measurement Details; Temperature Measurement Details; Temperature Compensation Details

417102012_LMI02.doc - 89 - Rev. 9-07.08
11.3.2 Temperature measurement
Measuring principle: Resistance measurement with NTC
Temperature display: Digital in °C (resolution 1°C)
11.3.3 Temperature compensation
Reference temperature: 20°C
Tk set point: ALKALINE (1.9 %/K) and ACID (1.25%/K)
Settings: Under TEMPERATURE COMP. in PARAMETER FUNCTIONS
menu
Function range of
temperature compensation:
0°C ... 100°C
Errors in temperature
compensation:
Max. 0.2 %/K between 20 and 80°C
11.3.4 Limit values
Number: Two, “SP1” and “SP2” can be preset under CONCENTRATION
SP1/SP2 in PARAMETER FUNCTIONS menu.
Switching hysteresis: Approx. 0.5% of preset rated value
Switching status display: The on-state of relays SP1 and SP2 is indicated by ▲ symbol
11.3.5 Pre-metering
Can be set up under PREMETERI
NG TIME in the
PARAMETER FUNCTIONS menu in
a range of 0-9999 s at intervals of 1s.
11.3.6 Pre-metering delay time
Can be set up under PREMETERI
NG DELAY in the
PARAMETER FUNCTIONS menu
in a range of 0-9999 s at intervals of 1s.
11.3.7 Metering time monitoring
Can be set up under DETERGENT
DELAY in the
PARAMETER FUNCTIONS menu in a
range of 10-9999 s at intervals of 1s.
11.4 Outputs
Switch outputs
1 potential free change-over contact (SP1), max. load of 8 A, 230 V AC
1 potential free change-over contact (SP2), max. load of 4 A, 230 V AC
1 potential free change-over contact for collective alarm messages, of 4 A, 230 V AC
1 potential free change-over contact for pre-metering, of 4 A, 230 V AC
Current output:
0/4 - 20 mA corresponding to 0 ... 100 % of preset measuring range.
Max. burden 400 Ω