Gems Sensors & Controls ULS-1 Specifications
ULS-1 Single Point Level Switches
IP65 ingress protection
Stocked items highlighted.
Compact 1/4˝ and 1/2˝ NPT versions
All-Stainless Steel wetted materials
IP68 construction for tanks or sumps
Gems ultrasonic switches are an excellent choice for a broad range of liquids
including those with light coating or scaling type characteristics.
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Relay output provides a reliable switch interface with remote devices such as a PLC,
SCADA or alarm.
Specifications
Wetted Material 316L Stainless Steel
Repeatability 2 mm (or better)
Protection Transient Reverse Polarity
Leakage Current <50μA
Delay 0.5 seconds
Input Power 5 VDC to 30 VDC
Output See Ordering Table
Dimensions
1/4˝ NPT Mounting
1/2˝ NPT Mounting
HIGH LEVEL
1/4˝ NPT
1˝
(25.4)
3/8˝
(9.5)
5/8˝
(15.88)
1.76˝
(44.7)
SWITCH POINT
1/2˝ NPT
(15.9)
5/8˝
1˝
(25.4)
How To Order
Select a Part Number based on Mounting Size and Output.
Mounting Size Electronic Output Part Number
Wet Sink 220901
1/4˝ NPT
1A SPST Relay, Normally Closed 220903
1/2˝ NPT
1A SPST Relay, Normally Closed 221487
Note: Other Electronic Output options are available. Please contact Gems.
Wet Source 220902
Wet Sink 221485
Wet Source 221486
- Standard units suitable for use up
to 80°C.
- High temperature versions also
available - up to 100°C.
5/8˝
(15.88)
2 1/4˝
(57.15)
SWITCH POINT
LOW LEVEL
Wiring
POWER
WHITE
OUTPUT
BROWN
(+) RED, 5VDC TO 30VDC
(-) BLK, GROUND
GREEN, CHASSIS GND
24 AWG PVC JACKET,
12˝ (305 MM) LENGTH
Wiring Direct to a Load
N.C. Operation (Relay Signal Output)
RED
BLACK
BROWN
WHITE
GREEN
SHIELD
GROUND
LOAD
CONTROLLED DEVICE
(RELAY, LAMP, VALVE, ETC.)
1A MAXIMUM
12 - 36 VDC
POWER SUPPLY
(SENSOR)
60 VAC/ VDC
MAXIMUM
POWER SUPPLY
6"(+
Visit www.GemsSensors.com for most current information.
Ultrasonic Switches Monitor the Toughest Applications
Operates in a wide variety of liquids
Handles pressures to 1000 psi
Unaffected by foam, vapors, particulate or turbulence
Lengths to 121 inches (307.3 cm)
Can be side, top or bottom mounted
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Sized and priced for most applications
Easy to install — simple to use
GEMS ULS Series of ultrasonic switches are designed for a broad
spectrum of viscous to light liquids; including some of the most
challenging liquids you may deal with: acids, freon, paints, lacquers,
etc. Stainless steel units are built to withstand high temperatures and
pressures with welded stainless steel sensor probes that have no
seals to leak and no moving parts to wear out. ULS Series switches
are unaffected by variation in temperature, pressure, density or type of
liquid. ULS-10 and ULS-100 electronics are housed in cast aluminum,
NEMA 4/NEMA 7 explosion proof and water tight enclosures.
Ultrasonic Switch
ULS-100
ULS-10
Selection Guide
Single Point Sensing
Input Power:
115 VAC / 230 VAC
12/24 VDC
9-36 VDC
12-36 VDC
Output:
10 Amp DPDT
1 Amp SPDT
5 mA (dry), 10 mA (wet)
4 mA / 20 mA Single 2-Wire
FM-Approved Explosion Proof Option
Sensor Material Options:
316 Stainless Steel (standard)
316L Stainless Steel
®
Monel
Hastelloy B
Hastelloy C
Teflon
Kynar
CPVC
Polypropylene
®
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®
®
ULS-1
ULS-10
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ULS-100 ULS-11
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ULS-1
ULS-11
6"()
Visit www.GemsSensors.com for most current information.
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