Water Specialties TR28-2, Operation And Maintenance Manual

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30119-41 Rev. 1.6/02-07
9
MODEL TR28-2
INDICATOR - TOTALIZER - TRANSMITTER
SOLID STATE CONSTRUCTION CURRENT OUTPUT PULSE OUTPUT SIGNAL
ONE PULSE PER TOTALIZER COUNT DIGITAL DISPLAYS
5
9
/ 16
"
8
15
/ 16
"
TR28-2 SIDE VIEW
NOTES:
The transmitter will drive up to a maximum of 600 ohms loop
resistance.
Wire Size Information:
The distance of the communication line from transmitter to the
device the 4-20mA will operate depends on the loop resistance, the
wire size, and the power supply. Based on a 24V DC power supply
and 22 gauge wire, we recommend a maximum loop of 3,500 feet.
(not used)
4-20 mA Output
Left Pin Right Pin
Green (-) Red (+)
Sensor Wiring Input
Left Pin Right Pin
Red (+) Black (-)
Power
Power Supply Maximum
Supply
Voltage Resistance of
for Loop Instruments in Loop
Variable 15.0VDC 150 Ω Ω Ω Ω Ω
Variable 18.0VDC 300
Ω Ω
Ω Ω Ω
Variable 21.0VDC 450 Ω Ω Ω Ω Ω
IN36-1(24V) 24.0VDC 600
Ω Ω
Ω Ω Ω
Variable 27.0VDC 750 Ω Ω
Ω Ω
Ω
Variable 30.0VDC 900 Ω Ω Ω Ω Ω
SHIELD TO PLAIN EARTH
GROUND AT PANEL END
RED (+) AND GREEN (-)
4-20 mA (LOOP POWERED)
BLACK (-) AND WHITE (+)
FOR PULSE OUTPUT
(ONE CONTACT PER
TOTALIZER COUNT)
Isolated Pulse
Output
Left Pin Right Pin
Black (-) White (+)
X
W
X
W
W
X
W
X