TEM TEMPERATURE MEASURES

OFFICINE OROBICHE

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OFFICINE OROBICHE

In process industry, both in pharmaceutical and food production, the correct method of measuring temperature is essential to maintain the proper functioning and safety of the installations and to guarantee the quality of production. Officine Orobiche has been active in the field of instrumentation for more than 60 years. Through this sixtieth the firm, helped by the collaboration and the experience of a leading corporation in the sector, has developed its own products for the measure of temperature. The line includes:

-PT100 sensors

-thermocouples

-thermowells

-temperature transmitters Our wide range of temperature sensors, assembling tools and transmitters, realized both with standard or customized design, grants the highest reliability in functioning and covers copious applications in many industrial processes. Also in our new product line we will apply the key concepts of our company policy, which consist of:

Flexibility, that enables us to give fast and effective answers to our clients requests

Technical and commercial assistance before and after the sale

Reliability in delivery time, thanks to an order tracking always up to date

Regular technical and production updates

Great price/performance updates

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OFFICINE OROBICHE

RESISTENCE THERMOMETER TR In industrial processes temperature is one of the most important parameters. Therefore, for its measurement, it is necessary to make use of instruments which are simple but the same time highly resistant. The most widespread instrument for the measure of temperature is the resistance thermometer. The element that measure the temperature in this instrument is a length of platinum wrapped around a ceramic support and covered with a dust of Magnesium oxide MgO, that ensures protection and Galvanic isolation. The electrical resistance of the cable varies according to a very specific relation between resistance and temperature, the derived signal is precise and repeatable, with respect to the DIN 43760 – IEC 751; the nominal standard value is 100Ohm at 0°C

This Platinum resistance thermometer is called Pt 100 and it used to measure temperatures between -250°C and 850°C

PT 100 TOLERANCE TABLE ACCORDING TO IEC 751

Temp. °C

Tolerance

CLASS B CLASS A 1/3 DIN 1/5 DIN 1/10 DIN

± °C

± OHMS

± °C

± OHMS

± °C

± OHMS

± °C

± OHMS

± °C

± OHMS

-200 1,3 0,56 0,55 0,24 0,44 0,19 0,26 0,11 0,13 0,06

-100 0,8 0,32 0,35 0,14 0,27 0,11 0,16 0,06 0,08 0,03

0 0,3 0,12 0,15 0,06 0,1 0,04 0,06 0,02 0,03 0,01

100 0,8 0,3 0,35 0,13 0,27 0,1 0,16 0,05 0,08 0,03

200 1,3 0,48 0,55 0,2 0,44 0,16 0,26 0,1 0,13 0,05

300 1,8 0,64 0,75 0,27 0,6 0,21 0,36 0,13 0,18 0,06

400 2,3 0,79 0,95 0,33 0,77 0,26 0,46 0,16 0,23 0,08

500 2,8 0,93 1,15 0,38 0,94 0,31 0,56 0,19 0,28 0,09

600 3,3 1,06 1,35 0,43 1,1 0,35 0,66 0,21 0,33 0,1

650 3,6 1,13 1,45 0,46 1,2 0,38 0,72 0,23 0,36 0,11

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OFFICINE OROBICHE

THERMOCOUPLES TC

Another instrument used to measure temperature is the thermocouple. Our thermocouples are designed for a very wide range of applications and guarantee solid, accurate and reliable measurement for temperatures between -200°C and 1800°C.

TYPES OF THERMOCUPLES AND ERROR LIMITS ACCORDING TO IEC 584

Model THERMOCUPLES Class 1 Class 2 Class 3

K

NiCr-NiAl 1,5 °C o 0,4 % x t

- 40 ° C ... +1000 °C

2,5 °C o 0,75 % x t

-40 °C ...+ 1200 °C

2,5 °C o 1,5 % x t

-200 °C ... + 40 °C

J

Fe-CuNi 1,5 ° C o 0,4 % x t

- 40 ° C ... +750 °C

2,5 °C o 0,75 % x t

-40 °C ...+ 750 °C

N

NiCrSi-NiSi 1,5 °C o 0,4 % x t

- 40 °C ...+1000 °C

2,5 °C o 0,75% x t

-40 °C … 1200 ° C

2,5 °C o 1,5% x t

-200 °C ... +40 °C

S Pt10%Rh - Pt 1 °C o 1,5 °C o 0,25 % x t -

R

Pt 13%Rh - Pt 1+(t - 1100) x 0,003 °C

0 °C ... + 1600 °C

0 °C ... + 1600 ° C

-

B

Pt30% Rh - Pt6%Rh

- 0,25% x t

600 °C ... 1700 °C

4 °C o 0,5 % x t

600 °C ... + 1700 °C

T

Cu - CuNi 0,5 °C o 0,4% x t

- 40 °C ... + 350 °C

1 °C o 0,75 % x t

- 40 °C ... + 350 °C

1 °C o 1,5% x t

-200 °C ... + 40 °C

E

NiCr - CuNi 1,5 ° C o 0,4 % x t

- 40 ° C ... + 800 °C

2,5 °C o 0,75% x t

-40 °C ... + 900 °C

2,5 °C o 1,5 % x t

-200 °C ... + 40 °C

LEGALIZADO

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OFFICINE OROBICHE

THERMOWELLS Thermowells are used for:

Protection of the thermometric element from corrosive effects

Protection from high pressure

Protection from the high speed of the fluid

Protection from vibrations

Allow the substitution of the thermometric element without halting the process

PERFORMANCES: The variants offered differ mainly in their designs:

Thermowells made by a filled bar stock or a tube with process connections flanged or threaded, flanged thermowells with Full Penetration welding

Procedure WPS/PQR

Operations with lapped and polished finish

MATERIALS: The materials used for the thermowells are: AISI304 / AISI316L / INCONEL / DUPLEX / SUPER DUPLEX / HASTELLOY / MONEL

Tapered Bar stock thermowell

Stepped Bar stock thermowell

Tube thermowell (M / M)

LENGTH OF THE WETTED PART The part of the thermowell that goes from the bottom of the process connection (flanged or threaded) to the end of the Stem is the part intended to be inserted in the process fluid. Subsequently we will define “stem” the part of the thermowell introduced in the fluid; its shape varies with the characteristics of the process fluid.

Flanged thermowell

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OFFICINE OROBICHE

TT TRANSMITTERS

The TT temperature transmitters are protected by a solid case made of aluminum or inox, developed for the usage in various sectors: Chemistry, Pharmaceutical, Oil & Gas, Energy, Food. Our transmitters guarantee great accuracy and a perfect isolation from electromagnetic interferences in every sector mentioned.

Our temperature transmitters are available in the following versions:

Analogic: 4/20 mA Analogic: 4/20 mA HART Digital Profibus Digital Fieldbus

The transmitter can be installed:

Top-mounted, integrated on the instrument Remotely, either wall mounted or on a 2” pipe stand

Lastly, we can provide the following certifications:

ATEX Ex-ia – Intrinsically safe ATEX Ex-d – Explosion proof IECEx Ex-ia IECEx Ex-d FM CSA EAC

LEGALIZADO

OFFICINE OROBICHE

OFFICINE OROBICHE S.r.l. - 24010 Ponteranica (Bergamo) Italy Via Serena, 10 - Tel. +39 035 4530211

www.officineorobiche.it - info@officineorobiche.it