Alerters SHIELD-3 thermochemical sensor TH-154

The detector SHIELD-3-1-16 issued for replacement obsolete and removed from the production of detector CTX-7M and can be used on various projects in chemical, petrochemical and other industries in the technological equipment (drying camera, oven etc ) paint and other industries in the air temperature up to 200°C.

Stationary detectors SHIELD-3 are designed for automatic continuous monitoring of the content dovzryvoopasnyh concentrations the combined vapors of flammable liquids in the air, issuing and light audible alarm on exceeding the established values of the concentrations switching external electrical circuits, DC and AC.
Dignity

The detector SHIELD-3 is equipped with a microprocessor unit, created on the basis of progressive scientific developments and modern element base.

* Operation of the sensor at high temperatures (up to 200°C).
* Explosion proof, intrinsically safe circuit, a high degree of mechanical strength.
* High reliability provided by the use of modern microprocessor technology and advanced production technology.
* Equipment interface to peripheral devices via digital communication (RS485).
* Continuous automatic control of the air environment that does not require sample preparation.
* Software control of the detector, protected from unauthorized access with a password.
* The bond length between the sensors and the unit BPS - 1000 meters
* Liquid crystal display with a continuous indication of concentration of measured components in an air environment.
* Ease of installation of the unit BPS.
* Built-in automatic self-test of the instrument.

Description

Alerters SHIELD-3 thermochemical sensor TH-154 represent a single stationary devices, consisting of a sensor TH-154, power supply and alarm BPS-152.

The sensor TH-154 has a level of protection "explosion-proof" (1), provide the types of protection "Flameproof enclosure" (d) "Intrinsically safe electrical circuit" (ib), Special (s). Marking ex - "1ExdibsIIBT3", "1Exd[ib]sIIBT3".

The input circuit of the unit BPS-152 made intrinsically safe (level ib). Unit BPS-152 should be installed outside the hazardous area.
Control components

Acetone, benzene, dimethylformamide, xylene, nefras C2-80/120; solvent coal; butyl alcohol, alcohol datetoday, alcohol isopropyl, ethyl alcohol, toluene, white spirit, ethyl cellosolve; ether exploratively, ether exploitedby; thinners RSC-1, ER-2, ER-4, ER-12V and the other consisting of the above substances; solvents P4, P5, 646, 648, RFG and the other consisting of the above substances.

Testing component - hexane.
Specifications № name of the characteristic Value
1 Range from 0 to 50% LEL
2 maximum permissible absolute error of ± 7.5% of the LEL
3 the Limit time setting t0,9D 30
4 warm-up Time, no more than 5 min
5 Time of automatic operation without maintenance, not less than 240 hours
6 the power consumed by the detector, should be no more than:
15 IN·
7 the Current consumed by the indicator from the external redundant power unit 12V., should be no more than:
in alarm mode
- in standby mode
400 mA
250 mA
8 the Average time to failure, not less than 30000 h
9 Full average life of not less than 10 years
10 overall dimensions, mm, not more:
- BPS-152
- DD-154
HH
HH
11 Weight, kg, not more:
- BPS-152
- DD-154
2,8
1,1
12 switched Power external circuits,·A, not more than 100
13 unified Output signal 4-20mA
14 power supply rearing is realized:
a) the main from the AC voltage of 220 (+22; -33) V, frequency 50 (±1) Hz;
b) backup from an external DC source (battery) voltage to 12.0 (±1,2)
Conditions

Ambient temperature:

• for sensor TH-154 from 15 to 200°C

• for unit BPS-152 -10 to +50°C

Relative humidity up to 80% at 25°C

Atmospheric pressure from 84 to 106,7 kPa (630 to 800 mm RT. Art. )

The serial output of the detector SHIELD-3-1-16 is scheduled for autumn this year.