Thermoelectric converters

Thermoelectric converters (TP) are designed to measure the temperature of liquid, gaseous, bulk media, dispersed media and suspensions without adhesion of particles, surfaces, as well as corrosive media that do not destroy the protective casing and protective fittings of the TP.

• Modular structure (flexible configuration)
• НСХ designation: ТХК (L), ТХА (К), ТНН (N), ТЖК (J), ТМК (Т)
• Measured temperature range: from - 40 to 1250 ° С, depending on НСХ and design
• Tolerance class: 1 or 2
• Number of sensing elements: 1 or 2
• Explosion protection: flameproof enclosure, intrinsically safe electrical circuit
• The recommended calibration interval is:
  • 3 years with the upper limit of the measurement range up to 300 ° С;
  • 2 years with the upper limit of the measurement range over 300 ° С
• Wide range of designs and materials for protective fittings
• High measurement accuracy
• Simplicity of design and reliability
• Possibility of bending, installation in hard - to - reach places, in cable ducts

We are waiting for the completion of the certification process (type) of SI for thermocouples EnI - 300 TNN, TXA, THK, TZhK, TMK.

They are used to measure the temperature of various media in metallurgy, oil and gas, chemical industry, housing and communal services, mechanical engineering, energy and other fields. Explosion - proof TP can be used at facilities in zones of class 0; 1 and 2 according to GOST IEC 60079 - 14 - 2013, where the formation of mixtures of combustible gases and vapors with air of category IIC according to GOST IEC 60079 - 14 - 2013 of temperature group T1 . . . T6 inclusive is possible

Main technical characteristics

Table 1

terms of Use

Type of climatic modification of the vehicle according to GOST 15150 - 69: UHL3.1 or U1.1, but for operation at ambient temperature - see. in table 2, the upper value of the relative humidity is 98% (at 25 ° C) and lower temperatures without moisture condensation

table 2

When installing a TP with a thermal cover, the lower limit of the ambient temperature is minus 70 ° C. Thermocouples can be manufactured to operate within narrower ambient temperatures.

Thermocouple

TP without IP

TP with power supply with DC output signal

1) The difference between the upper and lower limits of the measuring range should be:

• not less than 400 ° С for TP with the limit of the permissible basic reduced error ± 0.25% ,
• not less than 200 ° С for TP with the limit of the basic reduced error ± 0.5% ,
• not less than 100 ° С for TP with the limit of the basic reduced error ± 1% .

2) For TP type EnI - 300 TNN, EnI - 300 TXA with a lower measurement limit above plus 800 ° C, the absolute error is selected from values of ± 4 ° C or as a percentage of the measurement range selected when ordering, whichever is greater . . .

TP with MT with output current signal from 4 to 20 mA / HART

1) The difference between the upper and lower limits of the measuring range should be:

• not less than 330 ° С for TP with a limit of the basic reduced error ± 0.3% ,
• not less than 250 ° С for TP with the limit of the permissible basic reduced error ± 0.4%
• not less than 200 ° С for TP with the limit of the basic reduced error ± 0.5% ,
• not less than 100 ° С for TP with the limit of the basic reduced error ± 1% .

2) For TP type EnI - 300 TNN, EnI - 300 TXA with a lower measurement limit above plus 800 ° C, the absolute error is selected from values of ± 4 ° C or as a percentage of the measurement range selected when ordering, whichever is greater . . .

TP with power supply with digital output signal Profibus (RA)

1) The difference between the upper and lower limits of the measuring range should be:

• not less than 400 ° С for TP with the limit of the permissible basic reduced error ± 0.25% ,
• not less than 200 ° С for TP with the limit of the basic reduced error ± 0.5% ,
• not less than 100 ° С for TP with the limit of the basic reduced error ± 1% .

2) The limits of the permissible additional error of TP with MT caused by a change in the ambient temperature in the operating temperature range for every 10 ° from (20 ± 2) ° С do not exceed:

• 0.15% - for TP with the limits of the permissible basic reduced error ± 0.25% , ± 0.3% ;
• 0.25% - for TP with the limits of the permissible basic reduced error ± 0.4% , ± 0.5% ;
• 0.5% - for TP with the limit of the basic reduced error ± 1% .

1) When code C0 is specified, the degree of protection is IP66, the actual degree of protection depends on the cable gland installed by the customer.

3) Var