1. Features

• Embedded wireless data transmission module based on LoRa spread spectrum technology, using LoRa network to provide users with wireless data transmission function.
• Temperature of oilfield oil pipelines, temperature of single wells of pumping units, temperature monitoring and upper and lower limit alarm;
• Explosion-proof design: explosion-proof aluminum shell, intrinsically safe circuit board system;
• Protection level: IP68, fully sealed waterproof design;
• The instrument can set alarm enable, upper and lower limits, delay, dead zone, maximum range, minimum range, decimal places, upload frequency, acquisition frequency, change alarm, and other parameters.
• LED Indication: reset indication, configuration mode indication, networking indication, data acquisition indication;
• 4 1/2 LCD display: temperature data, battery capacity icon, upper and lower limit alarm, and other parameters.
• Adjustable installation direction: can be adjusted through a live connection or adapter to connect to on-site pipeline valves.
• This product has been widely used in the oil and gas Internet of Things industry.

2. Performance Indicators

1. Operating ambient temperature, -40~70℃.
2. Ambient humidity: 0～95%RH, no condensation;
3. Protection level: IP68;
4. Explosion-proof mark: Ex ib II C T4 Gb，Explosion-proof certificate: CE18.2230X；
5. Power supply: ER34615 lithium thionyl chloride battery (implementation standard: SJ52278/1), two primary batteries in parallel, capacity 3.6V 38Ah; battery connector SM-2P (female head: 1 positive pole, 2 negative pole) connected to the instrument; power supply voltage range, 3.0V～3.6VDC;
6. Battery continuous working time: ≥1 year (temperature acquisition frequency 1 time/min, communication frequency 1 time/h);
7. Battery replacement method: open the instrument back cover and quickly replace it through the standard SM-2P interface;
8. Long-term stability: drift, ±0.1%FS/year;
9. Measurement performance: range, 0 ~150℃、0～300℃、-50～500℃；Accuracy，0.5％F.S；Customizable according to actual needs； Complies with GB/T 28473.2, JJF1183 relevant technical standards;
10. Temperature sensor: using PT100 platinum resistance encapsulation, temperature overload capacity, 150%FS;
11. Process connection interface: probe-type process connection thread M20X1.5 Surface mount sensors use clamp installation, clamp size can be customized, clamp material 304 stainless steel, cable length greater than 1 meter, and connected with metal flexible tube.
12. Communication method: LoRa Multiple frequency bands (433/470/780/868/915MHz) ；
13. Communication theoretical bandwidth: 6 levels adjustable (0.3, 0.6, 1.0, 1.8, 3.1, 5.5 Kbps)
14. Online debugging and setting function: it can be debugged and set through computer + wireless receiver without uninstalling during online installation; the setting data content includes:

• Communication working parameters: network number, air rate;
• Measurement working parameters: alarm enable, upper and lower limits, delay, dead zone, maximum range, minimum range, decimal places, upload frequency, acquisition frequency, change alarm;

After the instrument is powered off, the setting data is retained;

15. Online upgrade: it can be realized through the configuration serial port and computer operation without uninstalling during installation;
16. Liquid crystal (LCD) display: LCD display area, length × width = 45 × 35mm, background color is green, the display content includes real-time measured value, temperature unit, instrument range, battery power, voltage, signal strength; the decimal point of real-time measured value can be set, the default is to keep 2 decimal places after the decimal point;
17. Instrument shell: the material is aluminum alloy, the shell sealing ring (pad) is silicone rubber, and the front and rear cover threads are coated with Vaseline; the dial diameter is 60mm, and the appearance color number is RAL5007;
18. Dimensions: length × width × height = 150 × 130 × 235mm (MAX). (excluding probe length)
19. Sampling interval: the acquisition interval is 1～60 minutes.
20. Sending interval: 5～1440 minutes.

Explosion-proof certification parameters

• Explosion-proof certificate number : CE18.2230X
• Explosion-proof mark: Ex ib ⅡC T4 Gb

4. Appearance structure and function introduction

   Front panel LED: red indicates temperature acquisition status and sleep to wake-up status,

   Front panel reset: through a magnet, below the front cover of the shell, the magnet points upwards to the reset arrow, keep it stable for 3-5 seconds and remove the magnet, the red LED flashes three times, and the LCD display 8888 also flashes three times synchronously, indicating that the instrument reset is successful. The main purpose of reset is to enter the instrument to modify internal parameters, or refresh the current temperature value, and re-establish the network link.

    

                 

    

   5. On-site installation and use instructions

   5.1. All transmitters have been digitally calibrated, and different transmitters have complete consistency and interchangeability;

   5.2. During transportation, the batteries of all transmitters are in the off state. When installing the temperature transmitter on site, you need to unscrew the meter head cover, turn on the battery switch, and pay attention to tightening the sheath to prevent water leakage;

   5.3. Installation of honeycomb network temperature transmitter on pipeline (1) Pipeline shutdown, depressurization, and venting. Drill a hole in the pipeline slightly larger than the outer diameter of the sensor probe's blind pipe sleeve; (2) Vertically insert the blind pipe sleeve from the hole to the bottom of the pipeline, then seal and weld it around the hole; (3) Inject heat transfer oil into the blind pipe sleeve, approximately 1/2 the volume of the pipe; (4) Insert the temperature sensor probe into the blind pipe sleeve, adjust the head direction, tighten the union with a wrench, and resume pipeline transportation.

   5.4. After installation, this wireless temperature transmitter can be configured via buttons or debugging tools.

   5.5. If the transmitter is not used for an extended period, it can be set to sleep mode using the debugging tool (the transmitter is set to sleep mode or off during factory entry and warehousing, unified to sleep mode or off state, on-site parameter adjustment and activation are required for normal use ). The online list of the debugging software interface is shown below:

    

   6. Precautions

   6.1. The battery model used in this product is ER34615H-3.6V38Ah; the use of other battery models is prohibited.

   6.2. The product antenna housing is made of plastic and has a potential electrostatic charge hazard! Avoid friction during use! Please wipe with a damp cloth when cleaning!