4
T R A N S M I T T E R S P E C I F I C A T I O N S
Supply voltage
120 VAC +10%/-15%, 50–60 Hz
240 VAC +10%/-15%, 50–60 Hz
24 VDC, ±20%
Power consumption
12 watts (without heater)
Fuse size
1
⁄
4
amp replaceable, 250 VAC Slo-Blo
®
for AC units
2 amp replaceable, 250 VDC Slo-Blo for DC units
Output signal
4–20 mA isolated (1,000
Ω
load), RS-232
Relays
Four 10 amp resistive, SPDT
Fail-safe
User selectable for analog and relay outputs
Display
Sixteen (16) character alphanumeric LCD
Keypad
Sixteen (16) button integral to front panel
Enclosure material
High-impact polycarbonate
Response time
2 seconds typical
Accuracy
± 0.25% of calibrated span
Ambient temperature
without heater & thermostat
-4° to +160° F (-20° to +70° C)
with heater & thermostat
-40° to +160° F (-40° to +70° C)
Humidity 95%
Non-condensing
F A L S E
T A R G E T
D E T E C T I O N
When it is impossible to mount the transducer far
enough away from obstructions in the vessel a unique
false target detection feature can be used. This target
detection mode programs the transducer to search for,
and display, the distance of the target nearest the trans-
ducer. When this false target is detected, the level infor-
mation of this unwanted target is stored in the buffer for
false targets. This process is repeated until all of the pos-
sible false target locations are programmed into the
transmitter or the buffer is full. A maximum of nine false
targets can be programmed into the buffer.
Successful configuration of false targets will eliminate the
possibility of unwanted target echoes being recognized
as the real material level in the vessel. This technique is
applicable to any obstruction which remains at the same
horizontal plane (i.e., ladder rungs, pipes, tank braces,
mixer blades, etc.) in the vessel.
