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Installation and Operating Manual

Ultrasonic

Level

Switch

Echotel

®

Model 919

Model 919

with sanitary fitting

Model 919

with 

3

4

" NPT

Summary of Contents for STI Echotel 919

Page 1: ...Installation and Operating Manual Ultrasonic Level Switch Echotel Model 919 Model 919 with sanitary fitting Model 919 with 3 4 NPT...

Page 2: ...ion is subject to the following two conditions 1 This device may not cause harmful interference and 2 This device must accept any interference received including interference that may cause undesired...

Page 3: ...m liquid level measurement in a wide variety of process media and application conditions The transducer uses a pair of piezoelectric crystals that are encapsulated in epoxy at the tip of the transduce...

Page 4: ...aluminum foil Do not place boards on foam packing materials Use a grounding wrist strap when installing and removing circuit boards A grounded workstation is recommended Handle circuit boards only by...

Page 5: ...ead tape If flanged bolt unit to mating flange with proper gasket The Valox housing can be rotated up to 330 degrees to align with the conduit Caution Never tighten unit on the tank connection by turn...

Page 6: ...PROCEDURES 1 Make sure the power is turned off 2 Remove the housing cover 3 Prevent moisture seepage into housing by installing an approved seal drain fitting in the conduit run leading to the unit 4...

Page 7: ...unit 4 Pull twisted shielded pair wire through the conduit connection 5 Connect the hot lead from the power supply to the middle 24 240 VAC VDC position of the terminal block 6 Connect the return lead...

Page 8: ...high level failsafe or WET ON for low level failsafe Figure 12 can be used for proper failsafe configuration NO CM NC Energized De energized Energized De energized HL High level failsafe LL Low level...

Page 9: ...housing 1 2 NPT 2 95 75 Echotel Model 919 Ultrasonic Level Switch 7 3 0 Reference Information 3 1 Troubleshooting 1 No signal with level change a Check wiring to make sure proper input voltage is supp...

Page 10: ...bar maximum Process Temperature Without heat extension 40 to 250 F 40 to 120 C With heat extension 40 to 300 F 40 to 150 C Housing Material Valox PBT Ingress Protection NEMA 4X IP67 Shock ANSI ISA S71...

Page 11: ...1 2 NPT conduit connection M Relay version with single PG 13 5 conduit connection R Relay version with single 1 2 NPT conduit connection 0 English actuation length in inches 1 Metric actuation length...

Page 12: ...e factory inspection finds the cause of the claim to be covered under the warranty If the trouble is the result of conditions beyond our con trol or is NOT covered by the warranty there will be charge...

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