108

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108

These sensors are designed for temperature measurement in liquid and gaseous non-corrosive media, and also corrosive media that do not damage protective cover material. Sensors are recommended to be used together with UNKJ thermowell.
It is recommended to mount temperature sensors without mounting elements and with protection sleeves using fittings UNKJ 031 or UNKJ 029 (see "UNKJ units and components" section).
107 and 108 modifications are equipped with removable sensing element (SE) PRTD 106-005, which is fixed in head by means of spring-loaded screws
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 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, and also cable glands for additional cable fastening, and metal hose fastening, if required.    

Technical characteristics

Connection diagram

3-wire

Tolerance class АА, А, В, С

4-wire

Vibration resistance GOST R 52931

group V3

Nominal (rated)
pressure

6.3 MPa

107 modification

1 МПаif equipped with UNKJ 031 fitting

108 modification

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

- GOST 8. 461-2009 without measuring transmitters;
- MP RT 2026-2013 – for sensors with installed measuring transmitters.

Reliability indicators

Group of operating
conditions

Probability of
failure-free operation

Specified lifetime

Mean
lifetime

Guarantee
conditions

I

0.95 for 40 000 hours

5 years

10 years

5 years

II

0.95 for 16 000 hours

2 years

4 years (6 years)*

2 years

III

0.95 for 8 000 hours

1 year

2 years

1 year

* - Increased mean lifetime with 0,6 failure-free operation possibility for the given period.

Error limits

Measurement accuracy of sensors with 4-20 mА DC signal and/or digital signal via HART protocol


Output signal

Nominal
designation

Measurement
accuracy
limits

Output
signal

Nominal
designation**

Measurement
accuracy
limits

4-20mА

AA3T25; А3T25

0,25 % · tn  or 0,5 °С

4-20mА
+
HART

AAxH25, AxH25

0,25 % · tn or 0,3 °С

B3T70

0,7 % · tn  or 1,0 °С

AxH10, BxH10

0,1 % · tn or 0,15 °С

A3T40

0,4 % · tn  or 0,5 °С

BxH70

0,7 % · tn or 1,0 °С

*   - tn thermocouple range should be multiplied by specified value in в %. Select higher value.
**  - «х» means number of wires in resistance thermometer connection diagram, х=3 or 4. For example, АА4Н25 or B3H70.

Temperature range

TC type

Thermowell diameter, mm

Thermowell material

Group of    
operating  
conditions

Tolerance
class

Application
temperature, °С

Calibration
interval

Mean lifetime

 

PRTD

10, 8

S10

I

A, B, С

– 50…+300

5 years

10 years

II

– 50…+450

2 years

4 years

III

В, С

– 50…+600

1 year

2 years

10

S13

II

АА

– 50…+150

2 years

4 years

III

– 50…+250

1 year

2 years

Response time:


Sensor response time depending on diameter, s

d = 8

d = 10

20

30

Execution options

PRTD

 

Exi

107

А

21

P100

В

3

Н10

S10

8

L

/

l

 

G1/2

1

 

2

3

 

4

5

 

6

 

7

8

9

 

10

 

11

 

12

 

13

 

14

 

NN

Name

Code

Description

1

Sensor type

PRTD

Platinum resistance temperature detector

2

Explosion protection

Not filled

general purpose electrical equipment

Exi

0ExiaIICT6 X, intrinsically safe circuit

Exd

1ExdIICT6, explosion-proof enclosure

3

Modification

107, 108

see drafts

4

Cable gland

0

standard cable gland of terminal head

А

for unarmoured cable in metal hose RZCH-15

В

for unarmoured cable in metal hose MRPI-15

C

for unarmoured cable in metal hose DN18

D

for unarmoured cable in metal hose DN20

E

for unarmoured cable in metal hose DN12

F

for pipe assembly, М20х1,5 internal thread

G

for pipe assembly, output external thread G1/2

H

for unarmoured cable, 6.5 - 14 mm diameter

I

for unarmoured cable, 3.2 - 8.7 mm diameter

J

for cable with internal/external sheath diameter: 6,1-11,7/9,5-15,9, single-line wire armoured cable

К

for cable with internal/external sheath diameter: 3,1-8.7/6,1-11,5, all armour types

L

for cable with internal/external sheath diameter: 6,5-14/12,5-20,9, all armour types

5

Sensor terminal
head (see "Alternative
designs"
page 1-10)

15; 16;17; 18; 19

aluminium head

IP66/IP68

1ExdIICT6 / 0ExiaIICT6 X

20; 22

aluminium head

IP65

general purpose

14; 21; 23; 24; 25; 26; 28

aluminium head

IP66

0ExiaIICT6 Х or general purpose

27

stainless steel

IP66

0ExiaIICT6Х or general purpose

6

Type of TC

50М, 100М, 50P, 100P, Pt100, Pt500, Pt1000

NSC according to GOST 6651-2009

7

Tolerance class

АА, А, В, С

Tolerance class according to GOST 6651-2009

8

Connection diagram

3, 4

3- and 4-wire connection diagram

9

Output signal, measuring transmitter accuracy designation - see table 3 at page 6-3

Not filled

analogous signal (Ohm) according to NSC

T25; T25

For terminal heads ≥14

4-20 mА

for AA3 and A3

T40

for A3

T70

for B3

H10, H10

4-20 mА +HART

for А4, В4, А3, В3

individual
sensor graduation

H25, H25

for АА4, А4, АА3, А3

H70

for В3, В4

10

Cable outer sheath material

S10

steel 12Cr18Ni10T

S13

steel 10Cr17Ni3M2T

11

Outer diameter

8

size (mm) on Customer's choice.

S10

10

S10, S13

12

Probe length, L

50÷3150

probe length L to the working end, mm

13

Extension neck length

Not filled

if equal to 120 mm or there are no mounting elements

30÷500

specify dimension in mm, oif 120 mm doesn't fit

14

Fitting standard size

Not filled

if  threaded fitting M20x1.5 or no fitting is used

Specify thread size

in other cases

Examples of product designation

PRTD Exi 108-028–Pt100-В3Н70 – S13 - 10 – 800

Product type

PRTD

Platinum resistance temperature detector

Explosion protection

Exi

0ExiaIICT6 X

Modification

102

without mounting elements

Cable gland

0

standard

Wring (terminal head code)

28

IP66

Type of TC

Pt100

 

tolerance class and connection diagram

В3

Class B, 3 wire diagram

Output signal (accuracy class)

Н70

4-20mА+HART

Sheath material

S13

steel 10Cr17Ni3M2T

Working end diameter

10

mm

Probe length L

800

mm

PRTD 108-020–Pt100-В3 – S10 - 10 – 400

Product type

PRTD

Platinum resistance temperature detector

Explosion protection

general purpose

Modification

107

with thrust ring

Cable gland

0

standard

Wring (terminal head code)

20

IP65

Type of TC

Pt100

Pt100

tolerance class and connection diagram

В3

Class B, 3 wire diagram

Output signal (accuracy class)

analogous (Ohm)

Sheath material

S10

steel 12Cr18Ni10T

Working end diameter

10

mm

Probe length L

400

mm