QUICK BENCH TEST (PRESSURE INPUT):
Connect Sensor as shown below, then apply Power. When properly connected figures will be shown on
the LCD display. Test operation of the TFT32 by applying pressure to the sensor or 4-20mA input. The
TFT32 will now display level in inches or cm.
CONNECTIONS:
POWER INPUT: The standard model requires DC power input between 15 to 24VDC with current
consumption of 120mA maximum. Power GND must be connected to a good “earth” ground for surge
protection.
RS485 NETWORK: Connections from the 485 network (other TFT32’s and the PC computer) are:
Data - (D*), Data + (D) and signal/shield ground (S.G.)
IMPORTANT NOTE: To comply with CSA/NRTL standards, power input and relay connection wires
must have a water tight fitting conduit entry to the instrument enclosure.
TFT32 Tank Farm Transmitter
Manual Series 2.4
Page 4
14 AWG MAX
IMPORTANT:
MUST CONNECT TO A
GOOD GROUND (<1 Ohm)
WITH 14 AWG CONDUCTOR
RELAY
(1 AMP)
RS485
INPUT
mA
+ -
D
D
S.G
*
24VDC
+
–
GND
6 - CONDUCTOR SHIELDED
18 - 22 AWG RECOMMENDED
SENSOR
TO RS485
NETWORK
RED
BLK
CONNECT
TO RS485
NETWORK
CABLE
