Thermal Instrument Co. 62-9FS Installation instructions

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Effective Date
7/10/2008
THERMAL INSTRUMENT Co.
217 Sterner Mill Road, Trevose, PA 19053
Telephone No. [phone]
Fax No. [phone]
Email: [e-mail]
INSTALLATION, OPERATION
INSTRUCTIONS
FOR
FLOW SWITCHES
62-9FS & 600-9 FS
220VAC
110VAC
24 VDC
Factory Set

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62-9FS & 600-9 FS FEATURES
True mass flow for gases and liquids
All welded 316SS body standard
Special materials available for corrosion or abrasion resistance
Unobstructed flow path
Pipe sizes and fittings to suit applications
-250 to 800F service
-14.7 to 15,000 PSIG
Automatic pressure and temperature compensation
Protected precision RTD sensors
Explosion-proof construction
Single alarm levels = 2 flow point alarms (temp is optional within two alarm system)
Fail safe design
Calibration chart provided for each meter
Temperature alarm optional
Form C (SPDT) 5 amp relays
Field change for trip high/trip low
Field change for input power 115/230 VAC 15 Watts
24 VDC operation available

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INSTALLATION MODEL 600-9FS AND 62-9FS FLOW SWITCH
FIGURE #1& #2 PROVIDE OUTLINE DRAWINGS OF THE FLOW SWITCH, SHOWING FLOW CONNECTIONS
AND MOUNTING DIMENSIONS.
ALL FLOW WETTED PARTS ARE 316 STAINLESS STEEL.
THE FLOW SWITCH CAN BE MOUNTED HORIZONTALLY OR VERTICALLY, HOWEVER, WHEN MOUNTED
VERTICALLY FLOW DIRECTION MUST BE UPWARDS. THE FLOW SHOULD ENTER AT THE PORT MARKED
‘IN’ AND EXIT
AT THE PORT MARKED “OUT”.
THE METER SHOULD BE INSTALLED IN A STRAIGHT LINE. THIS LINE SHOULD
PREFERABLY BE THE SAME DIAMETER AS THE METER TUBE OR PIPE. THIS STRAIGHT LINE SHOULD
HAVE A MINIMUM LENGTH OF TEN (10) DIAMETERS AHEAD OF THE METER. LIKEWISE, A STRAIGHT
LENGTH OF THE PIPE OR TUBE AFTER THE METER SHOULD BE AT LEAST A LENGTH OF FIVE (5) PIPE
DIAMETERS.
WHERE PHYSICAL CONDITIONS PREVENT THIS, INFORM US IN ADVANCE AND WE WILL CALIBRATE
THIS METER UNDER ACTURAL OPERATING CONDITIONS.
FIGURE #3 & #4 SHOWS THE OVERALL EXTERNAL WIRING CONNECTIONS
POWER WILL BE LABELED ACCORDINGLY

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OPERATION – MODEL 600-9FS AND 62-9FS
WITH ALL CONNECTIONS HAVING BEEN COMPLETED AND TESTED, APPLY
POWER AND ALLOW A TEN (10) MINUTE WARM UP PERIOD.
CAUTION: FLOW AND TRANSDUCER MUST BE WIHTIN 50°C OF OPERATION
TEMPERATURE BEFORE POWER IS APPLIED. SENSORS MAY BE
DAMAGED IF TRANSDUCER TEMPERATUE IS LOWER THAN THIS
LIMIT OR CALIBRATION WILL NOT BE ACCURATE.
TRIP POINTS ARE FACTORY SET. HOWEVER, THE CALIBRATION CURVE PROVIDED CORRELATS FLOW
VERSUS FLOW SWITCH VOLTAGE THAT CAN BE USED TO ADJUST TRIP POINTS IN THE FIELD.
SEE Figure #3 and #4 FOR ADJUSTMENT PROCEDURE.

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Figure #1

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Figure #2

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Figure #3

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Figure #4

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GENERAL PRECAUTIONS TO BE OBSERVED
IN INSTALLING FLOWMETER WIRING
When the Thermal Flowmeter or Probe is supplied with an explosion-proof condulet, it must be installed with
approved wiring techniques. This calls for seals where the external wiring enters these condulets.
In the case where we have a large condulet on a Probe with multiple connections, we will have a fitting with as
large as a 1 2" pipe connection. If the contractor is reducing this to 2" fittings, he must be sure that these
reducers are sealed with a suitable electrical or Teflon tape. In like manner, the connectors he
uses must be of the sealed conduit type.
Water entering the system from either the power wiring or the interconnecting cable system is very serious and
can do damage to the metering system.
The explosion-proof type condulets are designed for that purpose only; they are not waterproof and if the
system is submerged, water will enter. In applications where there is undue exposure, it may be well to go to
auxiliary covering or sealing mechanisms. This may merely mean a plastic coating, a plastic bag, or in extreme
cases a housing.
The same rules apply also where the external wiring enters the electronic housings. These can be either the
explosion-proof type, or the NEMA 4 type. In either case adequate attention must be paid to sealing the
electrical incoming lines. The cover on the NEMA 4 case is gasketed in a very adequate manner. However, in
many cases the atmospheric and liquid leaks are at the point of entry of the external wiring or through the
conduit from the external wiring itself.
In cases where the NEMA 4 units are used in very hazardous atmospheres or corrosive, it is advisable to purge
the system to prevent corrosive attack on the electronics.

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