01.31

are designed for processing medium temperature measurement in methane conversion units under elevated oxygen concentration.
These units can replace thermocouples produced by OKAZAKI Manufacturing Company (Japan).
Sensors can be of explosion protection type 0ExiaIICT6 X or 1ExdIICT6 according to GOST 30852.10-2002. For further details see "Alternative designs & Ordering information" below.
Terminal heads can be equipped with transmitters with 4-20 mА DC output signal and/or digital signal via HART, PROFIBUS-PA, FOUNDATION Fieldbus protocol. It is recommended to use heads of 16, 23, 28 modifications for easy wire connection to transmitters. Terminal head can be equipped with standard or special-purpose cable gland. For further details see "Alternative designs & Ordering information" below.

Technical characteristics

Hot junction

one or two

Ungrounded

Vibration resistance GOST R 52931

group N2

Nominal (rated) pressure

4 MPa

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 4-20mА signal

Calibration

- GOST 8.338-2001 – for sensor fitting length larger than 250 mm, without measuring transmitters;
- MP RT 2026-2013 – for sensors with installed measuring transmitters.

Response time τ 0,63

90 seconds

01.32

120 seconds

01.31

Reliability indicators

Group of operating conditions

Probability of
failure-free operation

Specified lifetime

Mean
lifetime

Guarantee
conditions

III

0.95 for 8 000 hours

1 year

2 years

1 year

IV

Not rated

Not rated

Not rated

Not rated

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

Thermowell material

Group of operating conditions

Application
temperature, ºС

Calibration interval

Mean lifetime

CTK

Т45

III

-40…+1100

1 year

2 years

CTN

Т45

IV

-200…+1250

Not rated

Not rated

Execution options

CTK

 

Exi

01.31

0

21

c1

 

U

 

Т45

30

L

997

1

 

2

3

 

4

5

 

6

7

 

8

9

 

10

 

11

 

12

 

14

 

NN

Name

Code

Description

1

Sensor type

CTK, CTN

Mineral insulated cable thermocouple with type according to IEC 60584 and ASTM E230

2

Explosion protection

Not filled

general purpose electrical equipment

Exi

0ExiaIICT6 X, intrinsically safe circuit

Exd

1ExdIICT6, explosion-proof enclosure

3

Modification

01.31, 01.32

 

4

Cable gland

0

standard cable gland of terminal head

А-Z

Special cable gland (see table 3 page 1-13)

5

Sensor terminal
head (see "Alternative designs" table, pages 1-10)

15; 16

aluminium head

IP66/IP68

1ExdIICT6 / 0ExiaIICT6 X

20; 22

aluminium head

IP65

general purpose

21; 23; 24; 25; 26; 28;

aluminium head

IP66

0ExiaIICT6 Х or general purpose

6

Tolerance class

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 c0

Т50;  Т70

for c1

Т80;  Т100

for c2

H25

4-20 mА +HART

Individual sensor calibration (c1)

H40

for c0

H50

for c1

H80

for c2

8

Sensor hot junction design

G

grounded junction, general purpose

U

ungrounded junction

9

Number of wire couples

Not filled

1 wire couple

2

2 wire couples

10

Reinforcement material

Т45

alloy CrNi45U

11

Outer diameter

17

mm for 01.32

30

mm for 01.31

12

Probe length

800÷1300

probe length L to the working end, mm

13

Modification number

994

flange

"tongue"

74 / 84 / 114 / 156

01.31

995

"male"

84 / 114 / 156

996

"male"

72 / 125 / 165

997

"male"

87 / 135 / 175

998

"male"

100 / 125 / 160

999

"male"

75 / 125 / 160

993

fitting

thread M20x1.5

01.32

Examples of product designation

CTK Exi 01.31-023 - c1 - U2 - Т45 - 30 – 1000 – 999 – temperature sensor based on cable thermocouple 01.31, modification version 999 with mounting flange 75/125/160 mm, tolerance class 1, two ungrounded hot junctions (U2), heat-resistant thermowell (Т45) 30 mm diameter, insertion length (L) 1000 mm. Explosion protection - "Intrinsically safe circuit ia", 0ExiallCT6 X.