XPZX series temperature transmitter

application

The technical specifications and structural characteristics of XPZX two-wire and three wire temperature transmitters are at the domestic level and have reached the level of similar products in the 1990s abroad. It has brought great convenience to automation control designers and users.

The explosion-proof electromechanical integrated temperature transmitter is a product independently researched, designed, and developed by our factory. This product follows the international and specialized standards issued by * * * and incorporates the characteristics of similar advanced products. It has a novel structure, is safe and reliable, and is convenient for users to observe temperature changes on site. The design, manufacturing, thermoelectric performance, and explosion-proof performance all comply with international IEC standards.

This product can be widely used in industries such as petroleum, natural gas, chemical, metallurgical, thermoelectric, cement, glass, etc. It can be used in conjunction with various electric instruments, intelligent digital displays, and computer control systems.

Main characteristics of the instrument

·Two line transmission without the need for compensating wires;

·Strong anti-interference ability and good long-distance transmission performance;

·The structure is simple, reasonable, and easy to install;

·Miniaturization, safety and reliability, long service life;

·Three wire and two wire input methods are universal;

·LCD displays on-site temperature with high clarity and no visual errors;

characteristic

·The power supply is 24VDC, with an allowable range of 18-30VDC;

·The output signal is 4-20mA

·LCD display of on-site temperature;

·Load resistance: 250 Ω

·Allowable basic error: ± 0.5% F.S;

·Temperature additional error: ≤ 0.015%/℃

·Zero point and quantity adjustment: ± 15% of full scale

·Operating environment temperature: -20~70 ℃

·Explosion proof mark: dIIBT4

·Protection level: IP54

Verification method

·When used in explosive hazardous areas, please pay attention to explosion-proof signs and explosion-proof levels;

·The installation environment of the mechatronic temperature transmitter must be within -20 ℃~70 ℃. When the ambient temperature is too high, the XPZX signal converter and display module can be installed separately from the thermocouple or thermistor. Our factory is equipped with a specialized explosion-proof box for separating and installing transmitters;

·Before powering on, please carefully check the positive and negative polarity of the power supply, and do not connect it incorrectly, otherwise it may cause unknown consequences;

·The XPZX signal converter and display module are encapsulated and cured with epoxy resin to enhance their shock resistance and prevent moisture, corrosion, and dampness‘

·The temperature transmitter needs to be calibrated after six months of use

·Calibration method for thermistor temperature transmitter

Equipment requirements: One digital voltmeter, one 0.01 Ω~1K Ω resistor box

250 Ω wire wound precision resistor, one DC 24V stabilized power supply

Connect the wires according to the system connection method

According to the sensor and range indicated on the transmitter nameplate, input the corresponding resistance value to make the output 5V (the zero point potentiometer can be adjusted separately)

Input the resistance values at the ten equal points of the measurement range, and check whether the output of each temperature point meets the accuracy range

Test each item according to the technical instructions in the manual, and it should meet the technical requirements

·Calibration method for thermocouple temperature transmitter

Equipment requirements: 4 digital voltmeters, 1 UJ33a potential difference meter

250 Ω wire wound precision resistor, one DC 24V stabilized power supply

Connect the wires according to the system connection method

According to the sensor and range indicated on the transmitter nameplate, input the corresponding potential to output 1V and 5V respectively (the zero potentiometer and full potentiometer can be adjusted separately)

Input the resistance values at the ten equal points of the measurement range, and check whether the output of each temperature point meets the accuracy range

Test each item according to the technical instructions in the manual, and it should meet the technical requirements

Ordering Instructions

·Special specification orders can be determined through mutual consultation between both parties

·Protective tubes made of corresponding materials such as corundum or high alumina can be used according to user needs.