Instruction Manual

ManualsBrandsKenco Engineering ManualsSensorsThermal Differential Switch

Page 1

KENCO ENGINEERING COMPANY

P.O. BOX 470426 TULSA, OK 74147-0426 ● PHONE: (918) 663-4406 FAX: (918) 663-4480

www.kenco-eng.com e-mail: info@kenco-eng.com

SERIES KTD THERMAL DIFFERENTIAL FLOW/LEVEL SWITCH

INSTALLATION / OPERATION INSTRUCTIONS

TABLE OF CONTENTS

1. GENERAL DESCRIPTION ............................................................. 2

2. PRINCIPLE OF OPERATION ......................................................... 2

3. MODEL DESCRIPTION .................................................................. 2

4. INSTALLATION .............................................................................. 3

5. WIRING CONNECTIONS................................................................ 4

6. OPERATIONAL CHECK................................................................. 5

7. PRE-CALIBRATION ....................................................................... 5

8. CALIBRATION (Level Switch)....................................................... 6

9. CALIBRATION (Flow Switch)........................................................ 7

10. MAINTENANCE & TROUBLESHOOTING ..................................... 8

11. SPECIFICATIONS .......................................................................... 8

Summary of content (8 pages)

PAGE 1
KENCO ENGINEERING COMPANY P.O. BOX 470426 TULSA, OK 74147-0426 ● PHONE: (918) 663-4406 FAX: (918) 663-4480 www.kenco-eng.com e-mail: info@kenco-eng.com SERIES KTD THERMAL DIFFERENTIAL FLOW/LEVEL SWITCH INSTALLATION / OPERATION INSTRUCTIONS TABLE OF CONTENTS 1. GENERAL DESCRIPTION ............................................................. 2 2. PRINCIPLE OF OPERATION ......................................................... 2 3. MODEL DESCRIPTION ........................................................
PAGE 2
GENERAL DESCRIPTION The Series KTD Thermal Differential Switch is the state-of-the-art in gaseous and liquid flow switching or liquid level / interface control. Flow or level detection is accomplished by using a high resolution thermal differential technique. The standard sensor wetted parts are of durable 316L series stainless steel, all welded construction with no moving parts. The switch is easy to install and adjust, giving reliable, low maintenance performance in the most demanding applications.
PAGE 3
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 Thermal Differential Flow / Level Switches are manufactured to the highest quality standards. These instruments use electronic components that can be damaged by static electricity. Make sure that you are properly grounded before starting installation.
PAGE 4
Electrical Installation It is recommended that conduit be installed onto the ¾” NPT connection on the electronics housing. A seal drain fitting should be used to prevent moisture from entering the switch. In high humidity areas, use a breather drain to minimize moisture intrusion All wiring, conduit, and fittings must conform to local electrical codes for the location selected.
PAGE 5
4. 5. 6. 7. Pull the power/signal wires through the conduit opening. Connect Power and relay wiring to Terminal Block (TBB) see figure on previous page. Reinstall the Electronic Module and tighten the (2) captive screws. Reinstall the Instrument Enclosure cover. OPERATIONAL CHECK After the switch is installed, and the level is below the sensor or there is no flow, perform the following test procedure to insure proper function. 1. 2. 3. 4. Remove the Instrument Enclosure Cover. Apply power.
PAGE 6
J2 – This sets the Failsafe condition of the switch. The jumper should cover the (2) left-most pins for High Level Failsafe (HLFS) condition, or the (2) right-most pins for Low Level Failsafe (LLFS) condition. See the table below for the comparison of the two conditions, as well as the condition of the Red and Green LED’s.
PAGE 7
CALIBRATION (Flow Switch) (Refer to Page #5 for location of controls) NOTE: For optimum performance, the calibration must be done at actual process temperature and pressure conditions in gasses, or actual process temperature in liquids. NOTE: The sensor tips must be perpendicular to the flow direction (see Page #3 – View C-C) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. Remove the Instrument Enclosure Cover Ensure that the pipeline is filled with fluid and at no or minimum flow. Apply power.
PAGE 8
MAINTENANCE & TROUBLESHOOTING The sensor can be cleaned by soaking, spraying or ultrasonic cleaning. Verify material compatibility before using any strong solvent or acid on the sensor. DO NOT sandblast or scour the sensor with abrasives. The sensor could be damaged by this process. TEST #1 - Power & Continuity Check 1. Remove power. 2. Remove Instrument Enclosure cover. 3. Loosen (2) Captive Screws (see Page #4) 4. Remove Electronic Module by grasping the Transformer, and pulling straight out. 5.