Intek Rheotherm 100FS Manual Download Page 11

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2.

The transducer isolation check is performed as follows (see Figure B):

A.

Disconnect the transducer cable from the electronics.

B.

Make the circuit connections illustrated in Figure B.

C.

Probe all the conductors and note the voltage with respect to the shield.  All readings
should be less than 0.5 Vdc.  The yellow (Y) wire should also be isolated from the green
(G) wire.  Connect the "low" test lead to Y and probe the Blu and G wires with the "high"
lead.  Again, the meter should read less than 0.5 Vdc; if not, consult factory for service.
Similarly, check the isolation between the Blu and G wires.

Summary of Contents for Rheotherm 100FS

Page 1: ...o its satisfaction to have been thus defective this warranty being expressly inlieu of all other warranties express or implied and all other obligation or liabilities on Intek s part The purchaser wil...

Page 2: ...heck 9 SECTION 4 MAINTENANCE 10 4 1 GENERAL MAINTENANCE 10 4 2 SPARE PARTS 10 4 3 TROUBLE SHOOTING 11 TABLE I TROUBLE SHOOTING GUIDE 11 SECTION 5 CUSTOMER SERVICE 12 5 1 QUESTION ON EXISTING HARDWARE...

Page 3: ...ent Key features of Rheotherm flow switches and flow meters are Nonintrusive flow monitoring For pipe sizes from 030 to 1 inch flow sensing isdone from outside the flow tube No moving parts There are...

Page 4: ...luid velocity Hence the measured temperature differential between the reference sensor and heated sensor is a function of flow rate Intek Inc is licensed to use this patented and trademarked flow meas...

Page 5: ...nt line See SECTION 2 INSTALLATION Theseinstructions coverinstallation operation andmaintenanceofRheothermflow switches in standard configurations Any special information pertaining to your unit is co...

Page 6: ...nector box keep moisture out Make sure the lid is tightly sealed and if supplied the gasket is in place Seal conduit lines at the connector box if conduit lines can become wet 1 TU nonintrusive TU 1 1...

Page 7: ...niform system temperature and consistent fluid media 2 Intrusive Probes Straight run is not critical but if trying to hold a precise set point some straight run is useful such as 10 to 20 pipe diamete...

Page 8: ...t environment for the electronicsis 40 120 F Recommended maximum temperature is 135 F 2 3 ELECTRICAL CONNECTIONS 1 Transducer Cable The standard transducer cable is 22 or 24 gauge multi conductor 6 sh...

Page 9: ...power to the sensor N C contact is made 2 High Flow Switch The relay is energized N O contact is made when the flow rate is below the trip level Therefore an alarm condition relayde energizes occurs...

Page 10: ...point of the flow switch In some cases the Trip potentiometer may not have enough adjustment on a particular fluid or you may wish to set the trip level beyond the range for which the flow switch was...

Page 11: ...all the conductors and note the voltage with respect to the shield All readings should be less than 0 5 Vdc The yellow Y wire should also be isolated from the green G wire Connect the low test lead t...

Page 12: ...ing Experienceand other observable conditions should be utilized to determine the frequency of inspection To test the flow switch action the flow rate should be reduced below for low flow switch or ra...

Page 13: ...ansducer cable damaged 3 Bad electronic component 4 Blown fuse 1 Securely connect transducer cable Replace if damaged 2 Replace fuse as needed 3 Perform transducer functional tests SECTION 3 5 Relay c...

Page 14: ...Please provide as complete a description as possible of the problems encountered 5 3 FACTORY AND FIELD SERVICE If you request field service Intek has experienced engineers available to meet your needs...

Page 15: ...e configuration of this unit as originally shipped from the factory Flow switch setting Q Low flow switch Q High flow switch Q Other Input Power Q 115 Vac 50 60 Hz Q 230 Vac 50 60 Hz Q Other Line Conn...

Page 16: ...1 i GND Pl U JP6 SPARE vee GND p N e GND S OOOV GND 2 GND Te ZERO CAL FLOw ZERO FLOw SPAN f 0 m __j C 1 jm a 0 Q U Q_ 0 ocr c ow 1 10 z S ai 0 o 2f f G t a O c Q wz jJ IO Q Q t U lOs 1 o__j w C t Iz O...

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