Intended usage:
The RLSW8AL V2 (LCD) is to be used for monitoring of gaseous media at flows/volumes within its
provided technical characteristics. Its application areas are e.g. climate- and cooling installations,
machines and equipments for filter monitoring, frlo monitoring in clean rooms, monitoring of supply air
(heating register), monitoring of volume flows,...
Setting up a RLSW8AL V2 LCD:
The LED-chain shows the actual flow relatively to the maximum flow (e.g.: max. flow=10m/s, 3 LEDs enlightend,
means 30% respectively 3m/s). If the most right LED blinks the flow is above the maximum flow. The switch point is
set by the potentiometer. The set switch point is shown by a blinking LED in the LED-chain.
Supply
voltage
Operating
state
T1
clamp 1
Additional switch point possibilities 1: relatively
If the switch-point-mode (menu marker 6: "Alarm") is set to "flow%" you will be asked to set a count from 1 to 99. This
count suits the switch point in percent to the maximum flow. E.g.: max. flow=10m/s, switch point set to 50%, means
actual 5m/s.
Additional switch point possibilities 2: Reference
If the switch –point-mode (menu marker 6: "Alarm") is set to "ref%" you will be asked to set a count from 1 to 99. This
count suits an automatically gathered value which is gathered in 120s after leaving the menu. While the value is
gathered the monitoring device measures the flow and after 120s the device calculates an average value. From this
average value the switch point will be calculated.
Menu:
The menu is handled with two buttons which can be found above the display. To get into the menu you need pres and
hold T1 for approximately 3s.
Marker
Display
German
1
language
2
geschw dim
3
geschw max
start verz
4
LED-chain
Rohr durchm
5
T2
Alarm
6
alarm hyst
7
Switch point
alarm verz
8
kal fakt
9
Menu handling with T1 and T2 (T1=continue, T2=select/set).
To save your settings you need go through the menu until you "save and exit" is shown on the display. With T2 select
"save and exit" and push button T1 to save your settings.
The structure of the menu may vary due to limitations to your application and can not be modified by you!
Attention! If you change the display from m/s to another dimension (m³/h, l/min) it is unavoidable to reset the switch
point! If the device was set so 5m/s if will be reacting at 5l/h! To simplify the handling you can inform us at the order
which dimension you would like to see. We will set the dimension suiting ex factory.
Information: The LC-Display is covered with a transparent foil to guard is from harm. You can strip it carefully to
enlarge the contrast of the display.
Display of the measurement results:
The RLSW8AL V2 LCD has different ways of displaying the actual flow and temperature measurement results. By
default, the first row displays the actual temperature absolutely. The second row displays the absolute flow. With
pushing T2 you can change the display:
-
pushing T2 once: first row: flow relatively, second row: flow absolutely
-
pushing T2 twice: first row: temperature relatively, second row: temperature absolutely
Signal outputs:
The output relays provides an opener/closer (depending on model) or a potential free change-over-contact. The switch
point of the transistor output is set with potentiometer analogically to the relay output.
Following analogue outputs are provided as well:
output
dependence
0..10VDC
0..10VDC
4..20mA
Select
Explanation
English
language
deutsch/english
menu language
flow dim
m/s, m³/h, l/min
flow dimension
flow max
0..80m/s
maximum flow
start del
0..300s
start up delay
pipe diam
1..2500mm
pipe diameter
alarm
Pot, flow%, ref%
Alarmauswahl
alarm hyst
0..99%
alarm hysteresis
alarm del
0..255s
alarm delay
cal fact
30..255%
calibration factor
temperature
flow
flow