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Status display
The display indicates active
unit components.
Description of relays outputs
Flush
external flush valve
We recommend the fitting of a programmed flush valve upstream of the unit if, when installing the unit, the use of a long
sampling tube is unavoidable
Also, in cases where the unit is used for monitoring two measuring points, an external flush valve should be installed in
order to prevent faulty measurements caused by mixing of the samples.
Immediately before each analysis the external flush valve is opened for a programmed period, thereby allowing the tube
up to the Testomat
®
2000 THCl to fill with the water to be measured. Please ensure that the programmed flush time is
sufficiently long.
The flush time is set with menu item
"M"
º
BASIC PROGRAM
º
PROGRAM VALUES
º
FLUSH TIMES/INTERVAL
º
EXTERNAL FLUSH
TIME
LV1 and LV2
Limit value outputs
Two volt-free relay contacts are available for reporting that a limit value has been exceeded. For both contacts the limit
values, the hysteresis and the function can be independently programmed:
Function
Type of contact
Action
LV1
S
active at
limit value in excess of
limit value 1 (residual hardness)
(Measuring point 1)
volt-free
change-over contact
programmable:
S
Continuous contact
S
Impulse (1 - 99 seconds/minutes)
S
Interval (1 - 99 seconds/minutes)
S
Hysteresis (1, 2 or 3 limit value in excess)
LV2
S
active at
limit value in excess of
limit value 2 (total chlorine)
(Measuring point 2)
volt-free
change-over contact
programmable:
S
Continuous contact
S
Impulse (1 - 99 seconds/minutes)
S
Interval (1 - 99 seconds/minutes)
S
Hysteresis (1, 2 or 3 limit value in excess)
Menu values:
"M"
º
BASIC PROGRAM
º
PROGRAM VALUES
º
LIMIT VALUES
"M"
º
BASIC PROGRAM
º
PROGRAM VALUES
º
FUNCTION LV1
"M"
º
BASIC PROGRAM
º
PROGRAM VALUES
º
FUNCTION LV2
"M"
º
BASIC PROGRAM
º
PROGRAM VALUES
º
HYSTERISIS LV1
"M"
º
BASIC PROGRAM
º
PROGRAM VALUES
º
HYSTERISIS LV2
(Measuring points 1 or 2)
Measuring points switch-over
If the unit is used for monitoring two measuring points, the solenoid valves (individual valves or one 3/2-way distributing
valve) must be connected to the corresponding sampling tubes. The switch-over can occur automatically:
The analyses
are carried out alternately from measuring point 1 or 2
.
Or via an external request:
Inlet IN1 active = next analysis from measuring point 1
(hardness)
It is important that the terminals are strictly allocated to the appropriate measuring points and to the parameter to be
measured:
Terminal 9 = Measuring point 1= Residual hardness
Terminal 10 = Measuring point 2 = total chlorine
IN1 active = measurements only from measuring point 1
"M"
º
BASIC PROGRAM
º
PROGRAM VALUES
º
MEASURING POINTS 1/2
