Dwyer ULT - Manual

Specifications - installation and Operating instructions
Bulletin L-45
DWYeR inSTRUMenTS, inC.
phone: 219/879-8000 www.dwyer-inst.com
p.O. BOX 373 • MiCHiGan CiTY, inDiana 46360, U.S.a. fax: 219/872-9057 e-mail: [email protected]
Series ULT Ultrasonic Level Transmitter provides reliable,
accurate, noncontact measurement of liquid levels. Ultrasonic
non-contact technology offers no moving parts to wear, jam, cor-
rode, or get coated like contact technologies. Mapping software
makes effective measuring surface only a 3˝ diameter column.
No concerns with ladders, pipes, or other tank intrusions in the
remaining sound cone. Unit is FM approved explosion-proof
making it ideal for use in hazardous locations. The ULT features
easy programming with 6 digit LCD display and simple menu
structure. Output range is adjustable with choices of inputting
tank dimensions or just fill and empty the tank while calibrating
and it automatically scales to levels it senses. Window cover
allows early viewing of display. Failsafe output options and diag-
nostic capabilities makes the ULT a good choice for critical
applications. SpeCifiCaTiOnS
Service: Compatible fluids. Not for use with powder and bulk
solids.
Wetted Materials: Sensor: PVDF; process connection: 303 SS.
Ranges: 24.6´ (7.5 m), 32.8´ (10 m).
accuracy: ±0.2% of maximum range.
Resolution: 0.079˝ (2 mm).
Blind Zone: Under 8˝ (20 cm).
Beam Width: 3˝ (7.6 cm) diameter.
Temperature Limits: Ambient: -40 to 140°F (-40 to 60°C),
Process: -4 to 140°F (-20 to 60°C).
Temperature Compensation: -40 to 140°F (-40 to 60°C)
pressure Limits: 30 psi (2 bar) up to 25°C (77°C). Above 25°C
(77°F), rating decreases 1.667 psi per 1°C increase. See chart.
See pressure and temperature chart.
power Requirement: 18 to 28 VDC (2 wire).
Output Signal: 4 to 20 mA or 20 to 4 mA (Two-wire).
Max. Loop Resistance: 250 Ohms at 24 VDC.
electrical Connections: Screw terminal.
Conduit Connection: 1/2˝ NPT female (two) or M20.
process Connection: 2˝ NPT male or BSPT.
enclosure Rating: Weather-proof meets NEMA 4X, explosion-
proof rated Class I, Div. 1, Groups B, C, D; Class II/III, Div. 1,
Groups E, F, G.
Mounting Orientation: Vertical.
failsafe: On lost echo after 30 seconds, user selectable to 4,
20, 21, 22 mA or last signal.
Memory: Non-volatile.
Display: 6 character LCD.
Units: In, cm, ft, m, percent.
Memory: Non-volatile.
programming: 4 button.
Weight: 4.0 lb (1.8 kg)
agency approvals: CE, FM.
3 29/32
[99.21]
8 1/16
[204.79]
2X 1/2 NPT
4 9/32
[108.74]
ø3 21/64
[84.53]
Series ULT Ultrasonic Level Transmitter
Series
Range
Options
ULT
1
2
1
2
Ultrasonic Level Transmitter
24.6´ (7.5 m)
32.8´ (10 m)
2˝ NPT male process with 1/2˝ NPT
female conduit
2˝ BSPT male process with M20 conduit
Model Chart