Operating instruction manual
| TX Thermal Disperson Level Switches 7
4.0 CONFIGURATION
The thermal dispersion line, TX, TQ, TS, IX and IM electronics module can be factory configured to accept power in
-
puts of 90-130 VAC, 200-240 VAC at 50/60 Hz or 24 VDC. Maximum current draw with the dual switch point option is
180 ma and the maximum power draw is 5.5 Watts.
In addition, there are 6 jumper terminals JP2 through JP7 that allow you to set up the electronics for, Level, Liquid
Flow, Air Flow, Granular Solids, and Temperature.
All TX series switches can be configured to function as a
window comparator
. That is, to detect between two different
flow rates or two different temperatures. The switch can monitor for a combination of level and temperature, or flow and
temperature with the dual switch point option. With the dual switch point option board, the flow rate of a process can be
monitored with the millivolt output (approximately 1 volt to 3 millivolts). The millivolt output has an inverse relationship
to flow. In this configuration, the unit is two switches contained in one housing.
The output of basic unit consist of double pole–double throw (DPDT) relay. The dual switch (DS) option includes an-
other DPDT relay.
JUMPER SETTINGS FOR TX - 1000 BOARD (BOTTOM BOARD)
*DEFAULT
2. If the alarm recovery time
(time to return to normal energized state) needs to be made faster
AND
the alarm
entry time needs to be made longer, turn
R18 CCW
in ¼ - ½ turn increments. Test the switch response after
each adjustment until an acceptable balance in alarm entry time vs. recovery time (return to normal conditions)
is established empirically.
