305

Resistance thermometer PRTD 305 is designed for temperature measurement at molding machine working zone, and chemical fibre production line.

Thermometers are equipped with extension leads in glass filament sheath armoured with galvanized steel wire. Thermometers can be equipped with ATC adapters for measuring chain connection.

Technical characteristics

Connection diagram

2-wire

tolerance class В, С (see item 9 at page 6-5)

3-wire

класс допуска А, В, С

4-wire

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..+85ºС for Ex version with analogous signal

Calibration

- GOST 8. 461-2009;

Response time

does not exceed 16 seconds

Probability of
failure-free operation

Specified lifetime

Mean
lifetime

Guarantee
conditions

0.95 for 40 000 hours

5 years

10 years

5 years

Temperature range

TC type

Thermowell diameter, mm

Thermowell material

Group of    
operating  
conditions

Tolerance
class

Application
temperature, °С

Cal. int.

Mean lifetime

PRTD

Cone-shaped
thermowell

B (brass)

I

A, B, С

– 50…+300

5 years

10 years

Execution options

PRTD

 

 

305

0

70

Pt100

В

3

B

5.5

L

/

l

 

1

 

2

3

 

4

5

 

6

 

7

8

 

9

 

10

 

11

 

12

 

 

NN

Name

Code

Description

1

Sensor type

PRTD

Platinum resistance temperature detector

2

Explosion protection

Not filled

general purpose electrical equipment

3

Modification

305

see drafts at page

4

Terminal head

0

Free electrode ends 50mm

IP40

general purpose

2

miniature plug

4

standard plug

5

Sensor terminal
head (see "Alternative
designs")

70

conductor insulation and outer glass filament sheath / outer galvanized steel wire armour IP40

6

Type of TC

50P, 100P, Pt100, Pt500,

NSC according to GOST 6651-2009

7

Tolerance class

А, В, С

Tolerance class according to GOST 6651-2009

8

Connection diagram

3, 4

3- and 4-wire connection diagram for class АА, А

2, 3, 4

2-, 3-, 4-wire connection diagram for class В, С

9

Sheath material

B

Brass

10

Outer diameter, mm

5.5

tapered form, working end thermowell diameter - 5.5 mm

11

Probe length, L

30÷80

specify dimensions in mm

12

Extension wire length

100÷4000

specify dimensions in mm 500, 1000, 2000 3150 and more