data sheet ftj, k, e sheath type thermocouple features specifications this thermocouple is firmly sealed with high-purity oxidized magnesium (insulating material) in a fine metallic protective tube without air gaps, together with the thermocouple ele- ment. unlike ordinary type thermocouples, it provides excellent sensitivity and vibration resistance, and is designed to per- mit easy bending work. 1. thermocouple tube is very small in size, providing excel- lent sensitivity. 2. adoption of integrated structure has improved the vibra- tion resisting characteristic. 3. easy bending work allows fabricating a long-sized thermo- couple for easy measurement even in a place where ordi- nary type thermocouples cannot be used. 4. thermocouple strand is not exposed to air, ensuring a long life with minimum deterioration or breaks of wire, unlike ordinary type thermocouples. 5. a variety of protective tube materials are available for se- lection according to applications. 6. various types of terminals such as extension cable type, connector type, exposed type, terminal box type, etc., are also available for selection according to applications. applied standard: jis c 1605 -1995 thermocouple element: component material (note) "+foot " is connected to theterminal (+) of instrument for measuring thermal electromotive force, and '' - foot '' is connected to opposite side. kind j k e component material + foot - foot iron alloy made of copper and nickel alloy made of copper and nickel alloy made of nickel and chrome alloy made of nickel and chrome alloy made of nickel class : note: class 3 is applied only for low temperature of less than 40?c. class remarks 2 1 3 class 3 is permitted only for ftk, fte. temperature tolerance : symbol k tolerance class measured temperature (?c) -40?c or more, less than +375?c 1 1.5?c tolerance means the maximum allowable limit of the value calculated by subtracting the temperature of the temperature measuring junction from the temperature obtained by converting the thermal electromotive force by the reference thermal electromotive force. |t| is the value indicated by temperature (?c) that is not related to + or - symbol of the measured temperature. note: 375?c or more, less than 1000?c 0.004?t| -40?c or more, less than +333?c 2 2.5?c 333?c or more, less than 1200?c 0.0075?t| -167?c or more, less than +40?c 3 2.5?c -200?c or more, less than -167?c 0.015?t| e -40?c or more, less than +375?c 1 1.5?c 375?c or more, less than 800?c 0.004?t| -40?c or more, less than +333?c 2 2.5?c 333?c or more, less than 900?c 0.0075?t| -167?c or more, less than +40?c 3 2.5?c -200?c or more, less than -167?c 0.015?t| j -40?c or more, less than +375?c 1 1.5?c 375?c or more, less than 750?c 0.004?t| -40?c or more, less than +333?c 2 2.5?c 333?c or more, less than 750?c 0.0075?t| date EDS2-9B jun. 6, 2006
ftj, k, e 2 sheath material : sus347, sus310s, sus316 or inconel sheath outside diameter : 1.6, 3.2, 4.8 or 6.4mm mounting method : insertion type or screw-in type (with mounting bracket) mounting screw size: r 1 / 8 (pt 1 / 8 )or r 1 / 4 (pt 1 / 4 ) insertion length : 100~9000mm (specified in 10mm base) terminal structure : extension cable type, connector type, ex- posed type, terminal box type, and exten- sion cable (with connector) type temperature limit : (unit:?c) (note*) sheath material a: sus347, sus310s, sus316 b: inconel sheath outside diameter (mm) sheath material(*) k e j 6.4 kind a 800 800 750 b 1000 4.8 a 800 800 750 b 900 3.2 a 750 750 650 b 1.6 a 650 650 450 b ? lement structure : single-core: insulation type, twin-core: insulation type single-core; grounding type, twin-core: grounding type (note) twin-core type : 3.2mm or more minimum bending radius : 5 times larger than sheath outside diam- eter ?esponse characteristic : see table below. sheath thermocouple response characteristic 100 80 60 40 20 0 02468101214 time (sec) 6.4mm 4.8mm 3.2mm 1.6mm 6.4 4.8 3.2 1.6 12 2.60 1.22 0.53 0.11 51 response (%) (grounding type: 20 to 100?c in water) type of thermocouple sheath therm- ocouple ordinary type time constant (sec)
3 code symbols j t f 4 - k t f 4 - e t f 4 - description element single-core : insulation type, class 2 twin-core : insulation type, class 2 single-core : grounding type, class 2 twin-core : grounding type, class 2 single-core : insulation type, class 3 twin-core : insulation type, class 3 single-core : grounding type, class 3 twin-core : grounding type, class 3 single-core : insulation type, class 1 twin-core : insulation type, class 1 1 2 3 4 5 6 7 8 a b sheath outside diameter ( mm ) 1.6 3.2 4.8 6.4 1 2 3 4 mounting method without mounting fitting with mounting fitting r 1 / 8 (pt 1 / 8 ); sheath outside diameter 6.4cannot be used. with mounting fitting r 1 / 4 (pt 1 / 4 ) 0 1 2 structure extension cable type exposed terminal type terminal box type connector type extension cable (with connector) type l d g p q cable length none (12th code: d, g, p) 1m cable 3m cable other 0 1 3 z insertion length enter insertion length in the unit of '' cm '' . example) 200mm / 020 1500mm / 150 minimum length: 10cm, maximum length: 900cm sheath material sus316 sus347 sus310s inconel w l r x sheath type j thermocouple sheath type k thermocouple sheath type e thermocouple ftj cannot be used. (note) combination of 4th, 5th and 6th codes is possible but is limited as shown in the following table. : single-core element only : single-core and twin-core type 1.6 3.2 4.8 6.4 sus316 ftj sus347 fte sus310s sus316 ftk sus347 inconel external size material (12th code: l, q) 12345678 910111213 sus316
ftj, k, e information in this catalog is subject to change without notice. printed in japan head office gate city ohsaki, east tower, 11-2, osaki 1-chome, shinagawa-ku, tokyo 141-0032, japan http://www.fesys.co.jp/eng instrumentation div. international sales dept. no.1, fuji-machi, hino-city, tokyo, 191-8502 japan phone: 81-42-585-6201, 6202 fax: 81-42-585-6187 http://www.fic-net.jp/eng caution on safety *before using this product, be sure to read its instruction manual in advance. connection diagram a(+) b(-) mounting fitting (supplied as specified) r1/8 (pt1/8) or r1/4 (pt1/4) outline diagram (unit: mm) ft 4 l 1 3 1 2 3 4 5 6 7 8 a b 1 2 3 4 w l r x j k e 0 1 2 1 2 3 4 5 6 7 8 a b ft 4 d0 1 2 3 4 w l r x j k e 0 1 2 54 43 l (as specified) 40 2 4 ? ? ? 1000 l (as specified) compensation lead wire sheath thermocouple sheath thermocouple ?.3 hole ( insertion diameter "d" can be selected from 1.6 , 3.2 , 4.8 , 6.4.) 74 ?.5 g3/8 (pf3/8) (82) ? l (as specified) 70 ?7 ? ? ? l (as specified) connector sheath thermocouple sheath thermocouple sheath thermocouple 70 l (as specified) 40 ?7 ? h (as specified) connector compensation lead wire ? 2 4 ft 4 g0 1 2 3 4 w l r x j k e 0 1 2 ft 4 p0 1 2 3 4 w l r x j k e 0 1 2 ft 4 q 1 3 1 2 3 4 w l r x j k e 0 1 2 1 2 3 4 5 6 7 8 a b 1 2 3 4 5 6 7 8 a b 1 2 3 4 5 6 7 8 a b
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