Kinds of temperature transmitter - xbl

Temperature transmitter can be installed on thermal resistance of the junction box or thermocouple of the junction box.

The explosion-isolating spot demonstration of the integral temperature transmitter with thermocouple and RTD

SBW___

Usage & indexes

l It is widely applicable for the sensing& transmitting integral observation and control in various

l Output signal: 4~20mA(DC)

l Power source: 24DCV±10%

l Load resistance 250Ω~600Ω

l Ambient air temperature: -25°C~+80°C

SBWR Serial thermocouple temperature transmitter and SBWZ serial RTD temperature transmitter is a spot mounted temperature transmission unit in DDZ-S serial instruments and metres .It adopts the two-wire transmission method (the power input and the signal output are two communal conductors). There is a linear 4~20m current signal between the output and the measured temperatures. The transmitter may be installed inside the terminal box of the thermocouple and the thermal resistance to forma an integral structure,and also independently mounted in the instrument panel as a change-over unit. To be a new generation thermometric metre, it is widely applied in the industrial and scientific research fields such as petroleum,chemicals,textile ,metallurgy,electro-machinery,electric force,aviation,food,processing,pharmaceutical engineering etc for the purpose of automated temperature testing,transmitting and controlling

1 Principle of operation

The transmitter circuit module is composed of the amplifying unit,linearized unit,voltage/current change-over, self-corrected circuit,voltage regulating unit ,reverse protection circuit etc,The transmitter which takes the thermocouple as the temperature-sensing elements also includes the cold end compensator,the one which takes the thermal resistance as the temperature-sensing elements also includes R/V change –over units.

2. S serial temperature transmitter produced by this company has the outstanding advantages as follows:

l Working atmosphere temperatures:-30°C~+120°C

l It is equipped with the high precision cold end compensation circuit.Total temperature range absolute error ±0.5°C(S thermocouple ±0.8°C)

l Advanced non-linear correcting circurt.A linear relationship has been formed between the output signal and the measured temperature

l It self-establishes an drift correction system to ensure the measuring accuracy within the whole operating temperature range.

l It is attached with a special heat – control mechanismto effectively control its heat conduction

l It adopts expoxy seal packing with the fine corrosion-resistance ,shock-proofness and high reliability

l Its unique anti-interference circuit design guarantees the transmitter working safety and reliably under various interference.It is esp.equipped with anti-galvanomagnetism jam unit which is suitable in the heavily polluted environments by the modern electromagnetism.

3The main technical indexes:

l Basic errors:±0.2%,±0.5%

l Ambient air temperature viberation influence:Grade 0.2 0.02%FS/°C;grade 0.5 0.05%FS/°C

l Output signal:4~20mA,two-wire system transmission

l Load resistance:0~600Ω

l Power source:12~34VDC

l Working atmosphere:

1. Ambient air temperature: -25°C~+85°C

Ambient air temperature:-30°C~+120°C

1. 2. Relative humidity:5~95%RH,with no condensation.