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SPECIFICATIONS
Step One
Range:
3.6" to 6' (9 cm to 1.8 m)
Accuracy:
± .25% of span in air
Resolution:
0.125" (3 mm)
Frequency:
83 kHz (nominal)
Pulse rate:
2 pulses per second
Beam width:
8° conical
Dead band:
3.6" (9 cm)
Supply voltage:
12-36 VDC
Max loop resistance: 600 Ohms @ 36 VDC
Signal output:
4-20 mA, 12-36 VDC
Fail-safe diagnostics: Reverts to 22 mA
LED flashing
Temperature rating:
F: -40º to 140º
C: -40º to 60º
Temp. compensation: Automatic over entire range
Pressure rating:
30 psi (2 bar) @ 25 °C., derated @ 1.667 psi
(0.113 bar) per °C. above 25 °C.
Enclosure rating:
NEMA 4X / IP65
Enclosure material:
Polypropylene, U.L. 94VO
Transducer materials: PVDF
Mounting threads:
3/4" NPT for LVU-91
3/4" G for LVU-92
Mounting gasket:
Viton (3/4" G) LVU-92 only
Conduit connection: 1/2" NPT
CE compliance:
EN 50082-2 immunity
EN 55011 emission
(pending)
About Ultrasonic Technology:
An ultrasonic sound wave is pulsed five times per second from the
base of the transducer. The sound wave reflects against the process
medium below and returns to the transducer. The microprocessor
based electronics measures the time of flight between the sound gen-
eration and receipt, and translates this figure into the distance between
the transmitter and process medium below.
(-) (+)
4-20 mA
Temperature/Pressure Derating
35
30
25
20
Acceptable
15
Range
10
05
00
-40
-20
00
Temperature ( C)
POWER
Maximum Temperature/Voltage Derating
100
Unacceptable
Range
80
60
40
20
0
12
20
40
60
Continuous 20 mA Curve
Unacceptable
Range
Acceptable
Range
16
20
24
28
32
36
Operating Voltage (VDC)
6' Range
8 Cone
Radius
Range
Radius
Radius
Feet
Inches
cm
1
1 . 2
3 . 1
2
2 . 1
5 . 2
3
2 . 9
7 . 3
4
3 . 7
9 . 5
5
4 . 9
11 . 6
6
5 . 4
1 3 . 7
Electrical Loading Limits
700
600
Unacceptable
Range
500
400
300
Acceptable
200
100
000
18
24
Supply Volyage (VDC)
Range
30
36
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