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KENCO ENGINEERING COMPANY
P.O. BOX 470426 TULSA, OK 74147-0426 ● PHONE: (918) 663-4406 FAX: (918) 663-4406
GENERAL DESCRIPTION
The KUST Series Ultrasonic Level Switches are ideal, low cost solutions for many liquid level control applications. They
operate in a wide variety of services.
PRINCIPLE OF OPERATION
Ultrasonic switches use piezoelectric crystals to transform electrical energy into mechanical motion (sound). The
Transmit Crystal sends a pulse of sound through the space between the crystals, to the Receive Crystal. If the space is
filled with air, gas, or vacuum, the Receive Crystal does not detect the sound pulse. However, if the space is filled with
liquid, any liquid, the pulse is detected by the Receive Crystal, and the switch output changes.
MODEL DESCRIPTION
Input Power
Output
Switch Mounting
Sensor Material
Sensor Length
Process Connection
Flange Size
Flange Material
Sensor Length
Description
Code
Standard (2.25")
00
*Inches (3" – 120")
xxx
*316SS Sensor Only
INSTALLATION
Unpack the switch carefully. Inspect all units for damage. Report any damage to carrier immediately. Check the
contents against the packing slip and purchase order.
Kenco's Ultrasonic Switches are manufactured to the highest quality standards. These switches use electronic
components that can be damaged by static electricity. Make sure that you are properly grounded before starting
installation. Insure that all electrical connections are properly made, and that there are no "floating" connections.
www.kenco-eng.com e-mail: info@kenco-eng.com
MODEL KUST ULTRASONIC SWITCH
INSTALLATION / OPERATION INSTRUCTIONS
KUST -
-
-
-
-
Process Connection
Description
¾" NPT
150# Flange
300# Flange
Sanitary Flange
Input Power
-
-
-
Description
115Vac
230Vac
24Vdc
12Vdc
Switch Mounting
Description
Integral
*Remote
*Remote 10ft. (std.)
100ft. (max)
Flange Size
Code
Description
1
None
F
1-1/2"
H
1
S
2
3
Output
Code
Description
1
10A DPDT
2
Two-wire
3
4
Sensor Material
Code
Description
1
316SS
®
2
Tefzel
Flange Material
Code
Description
None
0
Carbon Steel
1
316SS
2
3
Code
1
2
Code
S
T
Code
A
S
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Summary of Contents for Kenco KUST Series
- Page 1 MODEL KUST ULTRASONIC SWITCH INSTALLATION / OPERATION INSTRUCTIONS GENERAL DESCRIPTION The KUST Series Ultrasonic Level Switches are ideal, low cost solutions for many liquid level control applications. They operate in a wide variety of services. PRINCIPLE OF OPERATION Ultrasonic switches use piezoelectric crystals to transform electrical energy into mechanical motion (sound). The Transmit Crystal sends a pulse of sound through the space between the crystals, to the Receive Crystal.
- Page 2 Operational Check Before installing the switch a simple operational check should be performed, as follows: 1. Fill a container with water 2. Open the electronics housing cover and connect power (see section on “Wiring”). 3. Set the Fail Safe jumper to the LLFS position (lower two pins). 4.
- Page 3 Relay Version Jumper High Level Failsafe (HLFS) Low Level Failsafe 12 or 24Vdc (LLFS) 115Vac or 230Vac Coaxial Cable 50/60 Hz To Sensor 1. Connect power wiring Media Fail Safe Relay Relay Terminals a. AC – Hot (L2), Neutral (L2), Level Setting Condition...
- Page 4 TROUBLESHOOTING Problem Solution Check wiring; verify that the correct input voltage is applied Verify that liquid is filling the sensor gap Check for dense foam or dried product in the gap. Switch may not function properly if either condition exists. No output change with level change Check sensor phono plugs for a good connection.
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