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LS2000 NuTec® Level Switch
Level Switch SummaryThe LS2000 NuTec represents the first
thermal level switch designed with 2 wire, 4 to 20 mA loop power. Using
24 Vdc input power, this design allows for retrofitting existing 2 wire
failure prone mechanical float and paddle switches without wiring
modifications. An alarm with SPDT relay and input power of 85 to 265 Vac,
24 Vdc or 24 Vac is available as an option. FCI is the only thermal
manufacturer providing temperature compensation to ensure set point
accuracy for process temperatures that vary up to
± 100° F.
All Nutec Series flow and level switches are designed with proven
thermal mass flow sensor technology in a rugged package that is easy to
install and requires minimal maintenance.
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Applications |
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Interface and sump level detection |
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Interface/level detection in settling vessels |
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Interface/sump level detection in separation vessels |
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Foam or sediment level control |
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Agitation detection |
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Liquid/resin interface detection |
SpecificationsAccuracy:
Top Mount: ± 0.25 inch [± 6 mm] from element tip.
Side Mount: ± 0.125 inch [± 3 mm] from centerline of
element tip.
Response Time:
Dry to Wet: Less than 2 seconds.
Wet to Dry: Less than 5 seconds.
Wet to Wet (Interface): Less than 10 seconds.
Enclosure:
For 2-wire: Aluminum rated for hazardous location use
(Class I and II, Division 1 and 2, Group C and D and resists the effect
of weather and corrosion (NEMA/CSA Type 4X and equivalent to IP66).
For Alarm Relay: Aluminum rated for hazardous
location use (Class I and II, Division 1 and 2, Group B, C, D, E, F and
G; and EEx d IIC) and resists the effect of weather and corrosion (NEMA/CSA
Type 4X and equivalent to IP66).
Agency Approvals: FM, CSA, CRN, ATEX (pending) and CE Mark.
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Flow Element
Materials of Construction: 304/305 stainless steel or 316L all
welded stainless steel for all wetted surfaces.
Process Connection:
For 304/305 stainless steel: 0.25 inch male NPT.
For 316L stainless steel: 0.75 inch male NPT
Insertion Length:
For 304/305 stainless steel:
0.60 inches [15 mm]
0.98 inches [25 mm]
2.23 inches [57 mm]
3.80 inches [152 mm]
For 316L stainless steel: 0.75 inch male NPT
2 inches [51 mm]
6 inches [152 mm]
Customer specified lengths are available as an option.
Operating Temperature: -40° to +250° F [-40° to +121° C]
Operating Pressure: To 500 psig [35 bar(g)]
Control CircuitOperating Temperature: 0° to +140° F [-18° to
+60° C]
Input Power:
For 2-wire: 22.5 to 30 Vdc, loop powered, 0.5 watt.
For Alarm Relay: 85 to 265 Vac at 3 watts, 24 Vac ± 2.5 Vac at
2.5 watts, or 24 Vdc +2.5/-1.5 Vdc at 2.5 watts.
Signal Output:
For 2-wire: 2 stepped outputs with alarm conditions at 14 mA ±
0.5 mA or 18 mA ± 0.5 mA field selectable. NPN, open collector
transistor 250 mA maximum current (alarm).
For Alarm Relay: 1 SPDT rated at 6 amps at 115 Vac, 240 Vac or 24
Vdc.
Electrical Connection:
For 304/305 stainless steel: 0.5 inch female NPT.
For 316L stainless steel: 0.75 inch female NPT |
Optional N.I.S.T. Flow Calibration ServicesFactory N.I.S.T. calibration in air or water is available as an option
for customer specified setpoint(s) or a flow curve based on the media
ranges specified above |
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