Temperature Transmitter Manufacturer for EPC, Power Plant & Industrial Automation

✅ Professional Temperature Transmitter Manufacturer in China
We are a professional manufacturer of temperature transmitters for EPC projects, power plants, petrochemical, oil & gas, metallurgy, and industrial automation applications. A temperature transmitter converts temperature signals from thermocouples (TC) or thermal resistance sensors (RTD) into standard electrical signals (4-20mA DC, etc.) for measurement, indication, and process control[reference:0]. Our product portfolio includes integrated temperature transmitters, intelligent temperature transmitters, LCD-display temperature transmitters, wall-mounted temperature transmitters, and intrinsically safe/explosion-proof temperature transmitters[reference:1][reference:2]. All products comply with GB/T 17614, IEC 60770, GB3836 and project-specific standards[reference:3], with HART, RS232, and RS485 communication protocols available[reference:4].

📋 Technical Specification

* Custom specifications are available upon request for EPC project tenders.

📦 Available Models (Temperature Transmitter Series)

🔹 Integrated Temperature Transmitter Series (SBW Series)

🔹 Intelligent / Smart Temperature Transmitter Series

🔹 Wall-Mounted & Special Application Series

📊 Temperature Transmitter Model Code Decoder

❓ Frequently Asked Questions (FAQ)

Q1: What is a temperature transmitter?
A: A temperature transmitter (温度变送器) is an instrument that converts temperature signals from thermocouples (TC) or thermal resistance sensors (RTD) into standard electrical signals (such as 4-20mA DC) for measurement, indication, and process control[reference:36]. It consists of a temperature sensor, signal conversion circuit, and output module, and is one of the most commonly used instruments in industrial automation.

Q2: What are the main types of temperature transmitters?
A: The main types include: Integrated temperature transmitters (SBWZ/SBWR) — sensor and transmitter integrated in one housing[reference:37]; Intelligent/Smart temperature transmitters (PWDA/WD) — digital calibration, LCD display, RS485 communication[reference:38]; Wall-mounted temperature transmitters — for indoor/outdoor environment monitoring[reference:39]; Explosion-proof temperature transmitters — for hazardous areas[reference:40].

Q3: What is the difference between SBWZ and SBWR temperature transmitters?
A: SBWZ is designed for thermal resistance (RTD) sensors such as Pt100, Cu50, and Cu100, with a temperature range of -200°C to +500°C[reference:41]. SBWR is designed for thermocouple (TC) sensors such as K, E, S, B, J, T, and N types, with a temperature range of 0°C to +1600°C[reference:42]. Both convert sensor signals into 4-20mA output and can be installed directly in the sensor's junction box.

Q4: What standards do your temperature transmitters comply with?
A: Our temperature transmitters are manufactured in compliance with GB/T 17614 (Chinese national standard for industrial process control transmitters)[reference:43], IEC 60770 (international standard for transmitters)[reference:44], and GB3836 (explosion-proof standard).

Q5: What output signals and communication protocols are available?
A: Standard output is 4-20mA DC two-wire signal[reference:45]. Other outputs include 0-10mA, 1-5V, 0-5V, and 0-10V[reference:46]. Communication protocols include HART (two-way digital communication)[reference:47], RS232, and RS485 (MODBUS)[reference:48].

Q6: What is the accuracy of your temperature transmitters?
A: We offer multiple accuracy grades: ±0.1% FS — premium grade for critical applications[reference:49]; ±0.2% FS — high precision for most industrial applications[reference:50]; ±0.5% FS — standard grade for general applications[reference:51].

Q7: What is the temperature range for temperature transmitters?
A: The temperature range depends on the sensor type: Thermal resistance (Pt100): -200°C to +500°C[reference:52]; Thermocouple (K-type): 0°C to +1100°C[reference:53]; Thermocouple (S/B-type): up to +1600°C[reference:54].

Q8: What is the power supply requirement for temperature transmitters?
A: Standard models require DC 12-32V (with reverse connection protection)[reference:55]. Smart/intelligent models require DC 12-45V[reference:56]. AC-powered models (CZ7000-AC series) require AC 170-250V[reference:57].

Q9: What is the load resistance for 4-20mA output?
A: For 4-20mA output, the allowable external load resistance is typically 0-500Ω[reference:58]. Some models support up to 0-850Ω[reference:59]. For 0-10mA output, it is 0-1kΩ[reference:60].

Q10: What is the difference between two-wire, three-wire, and four-wire connection?
A: Two-wire uses the same two wires for both power supply and signal transmission — most common for 4-20mA transmitters[reference:61]. Three-wire is used for RTD sensors to compensate for lead wire resistance[reference:62]. Four-wire provides separate pairs for power and signal, offering the highest accuracy[reference:63].

Q11: What is the temperature drift specification?
A: Temperature drift (temperature coefficient) indicates how much the output changes with ambient temperature changes. Standard models: ≤0.005% FS/°C[reference:64]. Premium models: ≤0.0015% FS/°C[reference:65].

Q12: Do you offer explosion-proof temperature transmitters?
A: Yes. We offer both flameproof (Ex d) and intrinsic safety (Ex ia) explosion-proof versions[reference:66]. Common certification marks: Ex d II B T4, Ex d II B T6, Ex d II C T6[reference:67].

Q13: What is the difference between integrated and split temperature transmitters?
A: Integrated transmitters have the sensor and transmitter in one housing, installed directly at the measurement point[reference:68]. Split transmitters have the sensor and transmitter installed separately — the sensor is at the measurement point and the transmitter is at a display/monitoring location, suitable for high-temperature or corrosive environments[reference:69].

Q14: What is cold junction compensation in thermocouple transmitters?
A: Cold junction compensation (CJC) is a critical feature in thermocouple temperature transmitters that compensates for temperature variations at the connection point between the thermocouple and the transmitter[reference:70]. Without CJC, measurement errors would occur. Our transmitters offer ±1°C standard CJC accuracy[reference:71] and ±0.1°C premium CJC accuracy[reference:72].

Q15: What is the difference between a temperature transmitter and a temperature sensor?
A: A temperature sensor (thermocouple or RTD) detects temperature and produces a raw electrical signal (millivolts or resistance change). A temperature transmitter is a complete instrument that includes the sensor (or connects to one), signal conditioning circuit, and standardized output (4-20mA, etc.). All temperature transmitters contain or connect to a temperature sensor.

Q16: What are the typical applications of temperature transmitters?
A: Temperature transmitters are widely used in: Power plants — boiler temperature, turbine inlet temperature[reference:73]; Petrochemical — reactor temperature, pipeline monitoring[reference:74]; Oil & gas — process temperature measurement[reference:75]; Metallurgy — furnace temperature control[reference:76]; EPC projects — instrumentation and control systems[reference:77]; Water treatment, HVAC, food processing[reference:78].

Q17: How do I select the right temperature transmitter for my application?
A: Key selection factors include: (1) Sensor type — thermocouple or RTD based on temperature range and accuracy requirements; (2) Temperature range — must cover your process temperature; (3) Accuracy requirement — 0.1%, 0.2%, or 0.5% FS; (4) Output signal — 4-20mA, HART, RS485, etc.; (5) Installation type — integrated, wall-mounted, or split[reference:79]; (6) Display requirement — with or without LCD/LED display[reference:80]; (7) Hazardous area classification — explosion-proof certification if required[reference:81].

Q18: What tests are performed on temperature transmitters before delivery?
A: We conduct comprehensive quality tests including: (1) Accuracy test — verifying linearity and repeatability; (2) Insulation resistance test — ≥100MΩ[reference:82]; (3) Dielectric strength test — ≥1500V AC[reference:83]; (4) Temperature drift test — verifying temperature compensation[reference:84]; (5) Cold junction compensation test for thermocouple models[reference:85]; (6) EMC test — per IEC61000-4-4[reference:86]; and (7) Explosion-proof test for hazardous area models.

Q19: Do you support EPC projects with technical documentation?
A: Yes. We provide full technical support for EPC projects, including datasheets, calibration certificates, type test reports, factory acceptance tests (FAT), material traceability documentation, and custom configuration based on project instrumentation schedules and control system requirements. We are a trusted partner for global EPC contractors in power, petrochemical, metallurgy, and industrial sectors[reference:87].

Q20: Can you provide custom temperature transmitter configurations?
A: Yes. We offer fully customized temperature transmitter solutions including custom sensor inputs, temperature ranges, output signals, communication protocols, display options, explosion-proof certifications, and special markings[reference:88]. Our engineering team works closely with EPC contractors to develop transmitters that meet specific project technical requirements and control system compatibility.

📩 Contact Us for EPC Project Pricing & Technical Support

Send your project specification, instrumentation schedule, or temperature measurement requirements. Our engineering team will reply with a customized solution, BOM & datasheet within 24 hours.

✉ Get Free Quote Now

WhatsApp / Zalo: +86 17856068126  |  Email: [email protected]

Thermocouple

Chemical Anti-corrosion Thermal Resistance

Wear-resistant Thermal Resistance

Micro Thermal Resistance

Field Display Thermal Resistance

Magnetic Thermal Resistance

Purge Gas Thermocouple

Bimetallic Thermometer

Multifunctional Digital Display Meter