INSTRUCTION MANUAL - nohken.com

1 Issued2012-09-211 Read and understand this MANUAL for safely usage. This MANUAL describes the product of explosion-proof construction. Read the othermanuals for the product of standard specifications. This MANUAL describes the handling, inspection, and adjustment ofthe product whichmodel is mentioned on the cover page. Read and understand this MANUAL beforehandling. Follow the additional document and/or direction, submitted by NOHKEN INC. and ourdistributor or agent, even if the terms are mentioned in this MANUAL . Save this MANUAL in proper place being available to refer immediately. The specification of product mentioned in this MANUAL may not be satisfied by thecondition of environment and usage. Check and consider carefully before using. Contact to sales office at NOHKEN INC. for any question or comment about this manualand followings are the description of the terms in this MANUAL .

2 DANGERI ndicates a potentially hazardous situation which, if not payattention, will result in death, serious injury or seriousdisaster. WARNINGI ndicates a potentially hazardous situation which, if not payattention, could result in death, serious injury or seriousdisaster. CAUTIONI ndicates a hazardous situation which, if not pay attention,may resultin minor or moderate injury or damage to prohibited matter. The explanation with this markshallbe followedIndicates instructed matter. The explanation with this markshallbe 1-2 DANGERDo not modify or disassemble the product. Otherwise, theflammable gas or vapor may be ignited. DANGERDo not open the terminal cover when powered. Leave terminalbox more than 3 minutes to cool down after turn off the , the flammable gas or vapor maybe ignited. WARNINGI nstall this product in hazardous location Zone 1 and 2,Do not install Zone not cause damage to the enclosure, joint surface, andthread on the cover.

3 The explosion-protection of this product isretained by thestrength of pressure for enclosure, wide andlength of the description of inspection, adjustment, andmaintenance in this MANUAL , and not disassemble the partsexcept it is , the explosion-protection of this productis small screw for earth ground terminal, cover fixing bolt,and etc. Shall be tighten with spring washer. Otherwise, theexplosion-protection of this product is not 2-3 WARNINGA djustment, inspection, and maintenance for explosion-proofshall be done by the skilled person who has been educatedand and maintenance except visual check for thisproduct shall be done where flammable gas or vapor is electrical instrument for maintenance at hazardouslocation shall be approved as explosion-proof construction. WARNINGTurn off the power immediately, if the smoke, strange smelland sound are occurred. Do not use ituntil the problem the wire is properly connected.

4 The product andconnected device may be malfunctioned, damaged, fired, orminer injury and electric shock may be occurred by 't use the sensor which is made from resin, when thesensor measures materials with volume resistivity equal to ormore than 109 3-4 CAUTIONR ecommend to use the earth terminal inside of the terminalbox for grounding. The earth terminal at the surface of terminalbox may be deteriorated by the environmental condition wire or cable for grounding shall be green color or stripeof green and yellow color(compliant with JIS). If not prepared,green color tape shall be installed at the tip of wire or cableto indicate for grounding. CAUTIONA void shock and rough handling to this may be damaged by shock as dropping, falling,throwing,knocking, lugging, and the specification of operating temperature, operatingpressure, switch rating, and etc. Otherwise, the product andconnected device may be malfunctioned, damaged, fired, orminer injury and electric shock may be occurred.

5 Check themanual or specification test shall be done before practical usage. If theserious accident is expected to occur by malfunction ofproduct, the other operating principle of product shall beinstalled in case of connecting inductive or lamp load to the protective circuit to the load to avoid over voltage andover current. If not provide, the contact may be 4-5 CAUTIONDo not grab and turn the terminal box, when the plug mountedproduct is removed from the tank. It may be cause of cuttinginternal wiring. The plug shall be loosened by the right the stem very close to mounting point, when carrying,installing, and hold the terminal box, it may betaken off from the flange or plug, and the product may bedamaged by and deeply consider the chemical compatibility formaterial of product in advance. The part especially float, whichis very thin, may be malfunctioned by miner corrosion.

6 CAUTIONThe product is 50cm or longerThe product shall be kept in horizontally. The product andother goods be damaged, and miner injury may be occurred 5-6 INTRODUCTIONA)This MANUAL specifies the specification of general product. If you order special product,some details of specification may be different with the )We are glad to suggest and advice for Model selection and chemical resistant ofmaterial, but final decision has to be made by the )This MANUAL has prepared with close attention. Ask sales office at NOHKEN INC. forany question or comment about the contents of this )For replacement partsThe quality of product has frequently improved, so same spare part may not besupplied. In this case, replacement part or product may be supplied. Ask sales office atNOHKEN INC. for )The contents of this MANUAL are subject to change any time without notice due to theimprovement of & DISCLAIMERA)NOHKEN INC. warrants this product against defect in design, material andworkmanship for a period of 1(one) year from the date of original factory )The warranty only covers the damage of products.

7 The secondary and third kinddisasters are not covered by NOHKEN )NOHKEN INC. shall not be liable for the )Do not follow the description and direction in this )Damage due to improper installation, wiring, usage, maintenance, inspection,storing, and )Repair and modification are done by the person who is not employee of )Improper parts are used and )The damage is occurred by the device or machine except our )Improper usage. (See "Proper of usage" in chapter 1 in this MANUAL )C-g)Force Majeure including, but not limited to, fire, earthquake, tsunami, lightning,riots, revolution, war, radioactive pollution, acts of God, acts of government orgovernmental authorities, compliance with law, regulation, and TERMS OF WARRANTY AND DISCLAIMER SHALL IN NO WAY LIMIT YOURREGAL 6--0- is essential that this MANUAL shall be read and understood before installation anduseof Model FR Reed type Level Sensors. This MANUAL covers instructions for theinstallationand are subject to change without any obligation on the part of themanufacturer.

8 MUST BE READ BEFORE USINGINTRODUCTIONWARRANTY & OF USE Page12. SPECIFICATIONS Page specifications3 PRINCIPLE OF OPERATION Page Page method5. WIRING Terminal blocks and RE relay Electrical connections forExplosion-proof OF EXPLOSION-PROOFFEATURE Page107 INSPECTION ANDMAINTENANCE Page108 TROUBLESHOOTING Page119 OPTIONAL PARTS Page 1210. GLOSSARY Page 12-1- NOHKEN has over 20 years of experience in creating customFR Series level switches fordemandingcustomer requirements. FR Series switches are used extensively in the power, steel, chemical,water treatment and food processing wants to be your company of choice for liquid level Model(1) Standard version(Type of protection: Flameproof TIIS d2G4)FR52 Cable inlet0:Pressure-tight screw-thread coupling method(G3/4)1:Pressure-tight packing method(G3/4)2:Pressure-tight screw-thread coupling method(G1/2)3:Pressure-tight packing method(G1/2)MaterialS: Wetted part material 304 Stainless steel(Float and Float travelstop :316 Stainless steel)V: Wetted part material PVCP: Wetted part material PPHV: Wetted part material CPVC-2-(2) Specialversion(Type of protection: Flameproof TIIS d2G4)FR52 Cable inlet0:Pressure-tight screw-thread coupling method(G3/4)1:Pressure-tight packing method(G3/4)2:Pressure-tight screw-thread coupling method(G1/2)3:Pressure-tight packing method(G1/2)Mounting type0:Flat face flange1: Raised face flange2: Slide flange3: Sanitaryfitting4.

9 Plug mounted from outside of tank9: OthersFlange andS: 304 Stainless steelstem materialS6: 316 Stainless steelS6L: 316L Stainless steelV: PVCHV: CPVCP: PPPFL:PFAliningF4T: PTFE tubingF6L: FEP liningF6T: FEP tubingZ: Others(3) Standardversion(Type of protection: Flameproof TIIS d2G3)FR54 Cable inlet0:Pressure-tight screw-thread coupling method(G3/4)1:Pressure-tight packing method(G3/4)2:Pressure-tight screw-thread coupling method(G1/2)3:Pressure-tight packing method(G1/2)MaterialS:Wetted part material 304 stainless steel(Float and float travel stop: 316 stainless steel)-3-(4) Specialversion(Type of protection: Flameproof TIIS d2G3)FR54 Cable inlet0:Pressure-tight screw-thread coupling method(G3/4)1:Pressure-tight packing method(G3/4)2:Pressure-tight screw-thread coupling method(G1/2)3:Pressure-tight packing method(G1/2)Mounting type0:Flat face flange1: Raised face flange2: Slide flange3: Sanitaryfitting4: Plug mounted from outside of tank9: OthersFlange andS: 304 Stainless steelstem materialS6: 316 Stainless steelS6L: 316L Stainless Standard Specifications(1)Contact RatingMax.

10 Contact capacity: 15VA15W(Resistive load)Max. working current: AC DC(Resistive load)Max. working voltage: 220V AC 110V DC(Resistive load)(2)Life expectancy: Min. 1 106(3)Allowable impact: Max. 100 m/s2(4)Type of protection:Flameproof TIIS certification d2G4 Flameproof TIIS certification d2G3(5)Insulation resistance: More than 100M at 500V DC(6)Withstand voltage: 1500V AC for 1 minute(7)OthersTable 1 ModelFlange size(JIS B2210)MaximumPressure(*1)Explosion-proof approvaltemperature (*2)ConstructionSpecific gravityas measurementAmbienttemperatureProcesstemp erature52 S5K 50A500 kPa-10 to +60 C-10 to +100 V5K 80 Aor equivalent200 kPa-10 to +50 C-10 to +50 P5K 80 Aor equivalent200 kPa-10 to +60 C-10 to +80 HV5K 80 Aor equivalent200 kPa-10 to +60 C-10 to +80 S5K50A500 kPa-10 to +60 C-10 to +150 *1 with static pressure*2 The temperature range that is described in certificate of 2 ModelFloatRelation between Float andLiquid Surface (*)52 S 49 H5025mm upper on and 25mm is under the level52 V 65 H8037mm upper on and43mm is under the level52 P 65 H8050mm upper on and 30mm is under the level52 HV 74 H8033mm upper on and47mm is under the level54 S 49 H5025mm upper on and 25mm is under the level* specific gravity of the liquidSpecialversions can select required mountings.