Sor Single Point Ultrasonic Level Switch Manual de usuario descargar pdf

Form 829 (08.13) ©SOR Inc.

1/16

The Ultrasonic Point Level Switch indicates liquid presence/absence within a sensor

cavity. Two piezoelectric crystals face each other across the sensor

cavity. One crystal transmits an ultrasonic signal; the other crystal

receives the signal.

When the sensor cavity is empty, the receiver detects a weak signal

because air is a poor conductor of ultrasonic waves. With the failsafe

switch in the “HI” position, the normally open relay contacts remain

open, and the Liquid Level LED is not lit.

When process liquid fills the sensor cavity, the receiver detects a strong

signal because liquids are good conductors of ultrasonic waves. With

the failsafe switch in the “HI” position, the normally open relay contacts

are closed, and the Liquid Level LED is lit.

The Failsafe Slide Switch reverses the relay actuation. However, the

liquid level LED is lit only when the relay is energized.

The sensor monitor circuitry (standard on 721 and 722 series switches

only) constantly monitors sensor integrity and opens the normally open

contacts of the sensor monitor relay in the unlikely event of a sensor failure. The relay is

energized when the sensor is operating properly.

Ultrasonic

Point Level Switches

General Instructions

Registered Quality System to ISO 9001

Design and

specifications are

subject to change

without notice.

For latest revision,

go to sorinc.com

NOTE: If you suspect that a product is defective, contact the factory or the SOR

Representative

in your area for a return authorization number (RMA). This product should only be installed by

trained and competent personnel.

Table of Contents

PC Board Arrangement ...............................2

Sensor Installation ................................ 3-4

Electrical Connection .................................5

Sensor Monitor Connection .........................6

One Point Remote Cable Connection ........... 7-8

Time Delay Adjustments ........................... 10

Pump Logic Accessory ............................. 11

PC Board Field Replacement ..................... 11

Sensor Test Procedure ............................. 13

Replacement Fuses ................................ 13

Spare Parts .......................................... 13

Troubleshooting ..................................... 14

Control Drawings ............................... 15-16

1 2 3 4 5 6 ... 15 16

Indice de contenidos

Pagina 1 - Point Level Switches

Form 829 (08.13) ©SOR Inc. 1/16The Ultrasonic Point Level Switch indicates liquid presence/absence within a sensor cavity. Two piezoelectric crystals

Pagina 2 - Models beginning

10/16Form 829 (08.13) ©SOR Inc.Plug in Connections Inside Electronics Housing Discharge the sensor per instructions on page 8. Attach the PC board con

Pagina 3 - (Metal sensor may vary)

Form 829 (08.13) ©SOR Inc. 11/16Pump Logic Accessory — Models with PL near the end of the Model NumberTwo point ultrasonic level switches with the PL

Pagina 4 - Open Sump or Basin

12/16Form 829 (08.13) ©SOR Inc.  Reinstall the two screws to secure the PC board bracket to the housing.  Go to C. Two Point Sensors (712 or 722)

Pagina 5 - Electrical Connection

Form 829 (08.13) ©SOR Inc. 13/16Sensor Test Procedure Disconnect a sensor cable from the PC board. Measure the capacitance across the pin and shell o

Pagina 6 - Relay Continuity Chart

14/16Form 829 (08.13) ©SOR Inc. Model No. of 1 pt control for metal notch integral sensorReplacement Board includes hardwareModel No. of 1 pt control

Pagina 7

Pagina 8

16/16Form 829 (08.13) ©SOR Inc. 14685 West 105th Street, Lenexa, KS 66215  913-888-2630  800-676-6794 USA  Fax 913-888-0767Registered Quality

Pagina 9

2/16Form 829 (08.13) ©SOR Inc.PC Board Arrangement9-Position Terminal Block (Reverse Side) Ground (Earth) Power Supply  DPDT Level Indication Relay

Pagina 10

Form 829 (08.13) ©SOR Inc. 3/16Sensor InstallationNotch-Type Sensor (Series 37  - N)Series 370 Ultrasonic Level Sensors can be mounted by inserting t

4/16Form 829 (08.13) ©SOR Inc.Sensor InstallationNotch-Type Sensor Mounting Alignment mark shown at 3 o’clock Alternate position: 9 o’clock1inch minim

Pagina 12

Form 829 (08.13) ©SOR Inc. 5/165.90.235.9 0.23C of flangeBottom View Viscous Sensor with 8-Hole FlangeAlignment mark (other side) position at 6 o’cloc

Pagina 13 - Spare Parts

6/16Form 829 (08.13) ©SOR Inc.Sensor Monitor Connection - Models 721 and 722 onlyBNine-Position Liquid Level Relay Terminal Strip ANC1 C1 NO1 NO2

Pagina 14 - Troubleshooting

Form 829 (08.13) ©SOR Inc. 7/16One Point Remote Cable Connection - Models 711R1 and 721R2 OnlyInstall conduit between the sensor base and the electron

Pagina 15 - Control Drawing

8/16Form 829 (08.13) ©SOR Inc.Discharge the SensorTemperature changes which occur during shipment may result in a small electrical charge inside the s

Pagina 16

Form 829 (08.13) ©SOR Inc. 9/16Coax Connections Inside Sensor BaseInside the sensor base, a remote interconnect board rests in a plastic holder. Slide