03.07

Assemblies can be used for temperature distribution control in vessel or furnace volume.
General industrial versions and explosion protection versions - explosion-proof sheath (Exd) or intrinsically safe circuit «ia» (Exi) according to GOST 30852.13-2002 are available.
Assembly consists of several 02.01 thermocouples with different insertion length. Number of measurement points is equal to the number of thermocouples 02.01 mounted on header flange manufactured according to GOST 12815-80, DIN 1092, ASME B16.5-2003. Junction box is mounted on the sensor header flange by means of interface box.
Multipoint assembly is manufactured on the basis of specific drawings agreed with the Customer. The drawings should specify flange type, interface box design (free wires or junction box), measurement transmitters availability, probe length values and other parameters. If required, terminal box can be positioned away from connecting flange by means of corrugated metal hose.
03.07 multipoint assembly is not equipped with leak monitoring cell connected to the header flange. it is recommended to use such assembly inside special pockets in reactors and tanks (seepicture below).
Terminal box can be equipped with measuring transmitters with  4-20 mА DC output signal according to GOST 26.011 and/or digital signal via HART, PROFIBUS-PA, FOUNDATION Fieldbus protocol.

Technical characteristics

Hot junction

one or two

Ungrounded or Grounded

Vibration resistance GOST R 52931

group V3

Seismic resistance MSK-64

grade 9 for unit installation up to 70 m above zero mark

Climatic category GOST 15150

UHL2Ambient temperature:

-60..+120ºС for general purpose products

-60..+85 ºС for Ex version with analogous signal

-55..+85ºС for products with unified output signal

Calibration

Not subject to periodic calibration Should be put out of operation after operating resource depletion

Nominal (rated)
pressure

complies to header flange parameters (0,1 ÷ 25MPa)

Flange material

should be agreed on the drawing. Maximum temperature on mounting flange – 600°С (flange operating pressure and temperature values should not be beyond the limits specified by the relevant rules and standards of the state supervision for these materials and operating conditions)

Reliability indicators

Group of operating conditions

Failure-free operation probability

Guarantee period

I

0.95 for 40 000 hours

5 years

II

0.95 for 16 000 hours

2 years

Error limits

Measurement accuracy of sensors with 4-20 mА DC signal and/or digital signal via HART protocol are given taking into account accuracies of thermocouple itself, transmitter and transmitter's cold junction compensation.


Output signal

Symbol

Measurement accuracy

Output
signal

Symbol

Measurement accuracy

4-20mА

c0Т40

±0,4% ∙tn* or ±1,5°С

4-20mА+HART

c1N25

±0,25%∙ tn or ±0,9°С;

c1Т50

±0,5%∙ tn or ±2,0°С

c0N40

±0,4%∙ tn or ±1,2°С;

c2Т80

±0,8%∙ tn or ±2,5°С;

c1N50

±0,5%∙ tn or ±1,7°С;

 

 

c2N80

±0,8%∙ tn or ±2,5°С;

*   - tn thermocouple range should be multiplied by specified value in в %. Select higher value.

Temperature range

CT type

Measurement range, ºС

Group of operating conditions

Specified lifetime

Cable selection

Sheath diameter

Sheath material

CTK

– 40 .. + 600

I

5 years

3;  4,5; 6, 8, 10

S321;  S316;  S347;  T600

– 200 ..+ 800

II

2 years

3;  4,5; 6, 8, 10

S321

– 200..+ 900

3;  4,5; 6, 8, 10

S316; S347; T310; T600

CTN

– 40 ..+ 700

I

5 years

3;  4.5

S347, Т310; Т600;

– 40 ..+ 800

II

2 years

3

S347, Т310; Т600;

– 200 ..+ 1000

4.5, 6

T310;  T600

CTL

– 40 ..+ 600

I

5 years

3; 4; 4.6; 5; 6

S10

CTJ

– 40 ..+ 760

II

2 years

3; 4,5

S321, S316

Response time τ 0,63:


Hot junction

seconds, for outer diameter d, mm

d = 3,0

d = 4,5

d = 6

Insulated from sheath

1.0

2.0

4.0

Uninsulated from sheath

0.5

1.0

2.0

Execution options

CTK

 

Exd

03.17

1

41

c1

H50

4

U

2

S316

D

6

L

/

l

-

Version 930.T2

1

 

2

3

 

4

5

 

6

7

 

8

9

10

 

11

12

 

13

 

14

 

15

 

16

 

NN

Parameter name

Code

Description

1

Sensor type

CTK, CTL, CTN

cable thermocouple

2

Explosion protection

Not filled

general purpose electrical equipment

Exi

0ExiaIICT6 X, intrinsically safe circuit

Exd

1ExdIICT6, explosion-proof enclosure

3

Modification

03.07

Multipoint temperature sensor with flange, without leak monitoring cell

03.17

Multipoint temperature sensor with flange, with leak monitoring cell

4

Terminal head

0

Free electrode ends 50mm

IP65

0ExiaIICT6Х or general purpose

1

Terminal box

IP66

1ExdIICT6 / 0ExiaIICT6 X

5

Version

20

159х159х101mm

maximum 6 MT

general purpose

30

110х110х85mm

maximum 4 MT

0ExiaIICT6 X

31

147х147х100mm

maximum 6 MT

32

305х147х100mm

maximum 16 MT

40

282х182х105mm

maximum 8 MT

1ExdIICT6 Х

41

304х204х214mm

maximum 15 MT

42

425х224х214mm

maximum 24 MT

50

Stranded conductor, silicon / shield / silicon insulation

Only for 03.07

60

Stranded conductor, PTFE / shield / PTFE insulation

6

Tolerance class

c0;   c1;   c2

For further details see table 5 page 2-9

7

Output signal, transmitter accuracy symbol, see table 5, page 2-10

Not filled

analogous signal according to NSC

Т40

4-20 mА

for k0

Т50;  Т70

for k1

H40

4-20 mА +HART

for k0

Н25; Н50

for k1

9

Number of points

1…30

Number of temperature monitoring points (levels)

9

Sensor hot junction design

G

grounded junction,

general purpose

U

ungrounded junction

1ExdIICT6 / 0ExiaIICT6 X or general purpose

10

Number of wire couples

Not filled

A pair of wires for every point

2

2 pairs of wires (2 junctions) for every point

11

Cable outer sheath material

S10

Steel 12Cr18Ni10Т (only for CTL)

S321, S316, S347

AISI 321, AISI 316, AISI 347

Т310, Т600

AISI 310, INCONEL 600

12

Cable sheath thickness

Not filled

standard sheath thickness (see table 1 introduction)

D

double sheath thickness (see table 1 introduction)

13

Outer cable sheath diameter

3; 4,5;6, 8, 10

size (mm) on Customer's choice

14

Probe length Ln

10÷100,000

Length of the lowest (the most distant) element of the multipoint sensor

15

Length l of extension wire

Not filled

 

For versions with terminal boxes 1xx

100÷30,000

specify dimensions in mm

Only for versions 05х, 06х

16

Drawing number

Version ХХХ.VV

Brief number of the agreed drawing should be specified.

Examples of product designation

CTK Exd03.17-–141 – к1H50 – 4U2 – 2S316 – 6 – L, version 930.T2 ¾ multipoint temperature sensor based chromel-alumel (K) thermocouples, modification 03.17 with leak monitoring cell,with junction box (141)made of aluminium alloy with explosion-proof sheath (Exd), thermocouple tolerance class 1, the sensor is equipped with measuring transmitters 4-20мА+HART (H50), two ungrounded junctions (U2) in every point, 4 measurement points, double-thick cable sheath made of steel AISI 316(2S316)  diameter 6 мм, engineering documentation code 930.Т2.