Wired Wireless Temperature Transmitter for Stirring Kettles

PL-ZPNMWok-Style Rotary Wireless Temperature Transmitter

Our company’s rotary‑type wireless temperature transmitter is an intelligent temperature‑measurement instrument that integrates an imported platinum–rhodium thermocouple (Type K, nickel–chromium–nickel–silicon) with Freescale’s ultra‑low‑power microprocessor—renowned for its outstanding performance and stability—and a high‑precision sensor signal‑conditioning circuit. On this basis, a wireless remote‑transmission module has been added, enabling the device to form a temperature‑acquisition system when paired with our smart wireless receiving terminal. Unlike conventional industrial systems that typically rely on RS‑485 or 4–20 mA current signaling and switch‑mode power supplies, this solution uses a 3.6 V lithium battery for power, simplifying installation, reducing wiring costs for customers, and truly achieving energy efficiency and environmental protection. This product is widely used in industrial temperature‑measurement applications involving rotating equipment such as balls, tanks, and kilns.

I. System Design Philosophy

1) Greater Stability

This rotary wireless temperature transmitter, built upon traditional designs, incorporates high-quality components, a high-precision and reliable signal conditioning circuit, anti-interference circuitry, and both software and hardware compensation techniques. Extensive testing and experimentation have ensured that the instrument delivers accurate measurement data, strong anti-interference performance, and ease of operation.

2) Wireless Transmission

Conventional temperature transmitters typically feature a 4–20 mA output signal, with some also offering local display. Data must be transmitted via wired connections to the control room for collection, or field personnel must manually record readings on-site. However, due to harsh industrial environments—unstable power supplies, cable damage caused by maintenance equipment, and cumbersome management—data acquisition often proves unreliable and inaccurate. This temperature transmitter employs the world’s most advanced ultra‑low‑power wireless communication technology; its measurement and control instruments, as well as monitoring devices, operate in the open 2.4 GHz wireless band. On‑site parameters such as data, alarms, and protection signals are wirelessly and reliably transmitted to the control room, eliminating the need for manual on‑site meter reading and long‑distance wired transmission, thereby achieving human‑centric operation and resource efficiency.

3) Energy-saving and environmentally friendly

Traditional temperature transmitters require AC or DC mains power; in contrast, this instrument employs the latest low‑power technology and is powered by a high‑capacity lithium battery. A single 3.6 V high‑temperature battery can operate reliably for more than one and a half years. The device eliminates the need to account for downstream load considerations and bypasses subsequent A/D conversion, directly wirelessly transmitting high‑precision measurement data to the receiving terminal in the control room, where it is then uploaded to the backend for centralized data management.



II. System Principle

ｉｎｓｅｒｔ the probe of this instrument into the pipeline. When the medium in the pipeline acts on the temperature-sensing element, causing it to heat up, the internal circuitry detects an electrical signal proportional to the process temperature. This signal is then precisely amplified and compensated by a linear amplification circuit, before being sent to the microprocessor for data measurement, processing, and display, and finally transmitted wirelessly to a remote terminal device.



III. Main Technical Specifications

1) Temperature measurement range: 0–450°C;

2) Power supply: a single 3.6V/5.5Ah high-temperature lithium battery;

3) Accuracy: Class 0.2, 0.5, and 1.0;

4) Display: five-digit LCD, clear display with no afterimage;

5) Overload: 150%FS;

6) Transmission distance: Line of sight < 50 meters;

7) Uses a PTFE housing—robust and corrosion-resistant;

8) Ambient temperature: -30℃ to +85℃;

9) Ambient humidity: < 95% RH;

10) Zero-point temperature drift: ±0.015%FS/°C;

11) Sensitivity temperature drift: ±0.015%/°C;

12) Frequency: Center frequency 2.4 GHz;



IV. Installation Dimensions and Interface Specifications

1. Outline Dimension Drawing - Contact Manufacturer at 18205504327

2. Installation Instructions:

This wireless temperature transmitter typically features pre‑drilled mounting holes at the installation location, with the device itself equipped with threads and a nut for clamp‑on mounting (device thread: M30×1.5; the user should provide a mounting hole with a diameter of approximately Φ32). Custom installation interfaces and insertion depths can also be designed and manufactured according to customer requirements. To balance probe strength and temperature‑measurement sensitivity, the probe tip employs a tapered design.

3. Power Supply Method:

The wireless temperature transmitter is powered by a single high‑performance, high‑capacity lithium battery, which generally lasts for more than 1.5 years; when replacement is needed, simply open the rear cover of the thermometer, remove the battery from its compartment, and install a new one.