ANDERSON-NEGELE global|Home|Sitemap|Integrity & Compliance|Terms & Conditions
SANITARY BY DESIGN
Distributor Only

This website uses cookies to keep track of your customer number and username as you move throughout the site. By allowing us to track this information, we can provide more details on your specific pricing and pre-fill forms when you request information, order products, and submit RMAs through our website. This cookie will expire in 2 hours or when you close your browser, whichever comes first.

By checking "Remember Me", you also permit us to store this cookie on your computer for a period of 6 months.

 

Close



Remember Me
Allow Cookies?
Signup | Forgot Your Password?


EU Cookie Statement

Technical Bulletin - SL/SX Level Sensor Troubleshooting

UNIT: Model SL and SX Liquid Level Transmitter

Revision: 1.0 | Doc #: TS-3001

Symptoms, and their associatd corrective actions have been provided for the purpose of field troubleshooting the SL/SX Liquid Level Transmitters.

Note: As many sensors provide feedback to cooling systems, agitator controls or lockout controls be sure to properly secure all associated systems prior to performing troubleshooting.

CLICK HERE to view the complete service manual

NO CURRENT OUTPUT

  • Loop may be broken - Measure voltage across LOOP(+) and LOOP(-) screws. Result should be between 12-40 VDC.

  • Sensor circuitry damaged - Move LOOP(+) wire to TEST(-) screw. If output loop now works, internal sensor circuit has been damaged. Contact Anderson.

OUTPUT CURRENT STUCK BETWEEN 4 AND 20 mA

  • Sensor must be in RUN mode - be sure sensor is NOT in CURRENT CAL or FIELD CAL switch positions.

  • Check diaphragm for damage - dent or ding may cause output shifts beyond adjustment. Contact Anderson.

  • Verify that CURRENT CAL value is correct - Section 3.3 of Service Manual.

CANNOT SET TO 4.00 mA (+/- .04 mA) USING ZERO SWITCH

  • Verify that CURRENT CAL value is correct - Section 3.3 of Service Manual.

  • If current value is greater than 4.00 mA, sensor is damaged. Contact Anderson.

  • If current is less than 4.00 mA, follow checks in "No Current Output" section above.

SENSOR OUTPUT SIGNAL NOT STABLE - DRIFTS

  • Verify that CURRENT CAL value is correct - Section 3.3 of Service Manual.

  • Check diaphragm for damage - dent or ding may cause output shifts beyond adjustment. Contact Anderson.

  • Check for signs of moisture / water in housing. If found, check cable entry. Must be sealed to prevent moisture entry. Cap must be tightened completely to engage gasket. Removing sensor from service - place in low humidity area with cap removed. Sensor may function correctly when dry.
  • Prior to rezero, vessel must be empty and temperature stable. Recommend rezero after process and prior to CIP.

CURRENT OUTPUT VALUE INCORRECT

  • Follow section 3.3 of Service Manual - Verifying Sensor Calibration. Sensor may have been adjusted improperly with product in vessel.

  • If calibration does not match factory setting, calibrate as shown in Section 3.5 of Service Manual.

OUTPUT CURRENT JUMPS TO VALUE GREATER THAN 23 mA

  • Follow section 3.3 of Service Manual - Verifying Sensor Calibration. Sensor may have been adjusted improperly with product in vessel.

  • If calibration does not match factory setting, calibrate as shown in Section 3.5 of Service Manual.
     


Oscar Ramirez joins Anderson as Regional Sales Manager - Mexico

Anderson is pleased to announce that Oscar Ramirez has joined Anderson as o ...

more ...


HB “Mini” Level Transmitter Upgrade

Anderson Instrument is pleased to release the latest upgrade to the HB ...

more ...


Joe Gamradt promoted to Regional Sales Director-West Region

Anderson is pleased to announce the promotion of Joe Gamradt to a newly cre ...

more ...

Distributor Only

This website uses cookies to keep track of your customer number and username as you move throughout the site. By allowing us to track this information, we can provide more details on your specific pricing and pre-fill forms when you request information, order products, and submit RMAs through our website. This cookie will expire in 2 hours or when you close your browser, whichever comes first.

By checking "Remember Me", you also permit us to store this cookie on your computer for a period of 6 months.

 

Close



Remember Me
Allow Cookies?
Signup | Forgot Your Password?

Anderson Instrument Company Inc.
156 Auriesville Road
Fultonville, NY 12072
Phone: 518-922-5315
Fax: 518-922-8997
info@andinst.com