Refrigerated Truck Temperature Monitor

[ Detection Principle of Refrigerated Truck Temperature Monitor ]: It uses digital temperature and humidity sensors, encapsulates the thermal resistor and humidity-sensitive capacitor into a small chip, adopts full-range multi-segment calibration, and stores the calibration data in the chip.

Refrigerated Truck Temperature Monitor is a remote temperature monitor based on GPRS to monitor the temperature and humidity of food cold chain and industrial cold chain.

【Temperature and humidity sensor】: Imported sht30

【Material】: Polycarbonate high-strength shell, operation buttons are waterproof and dustproof, firm and reliable;

【Appearance】: Humanized button design; exquisite appearance, showing grandeur;

【Complete size】: 122mm*102mm*36mm

【LED display】: With display screen supporting Chinese menu display, 4-inch large screen display, real-time display of data, temperature and humidity alarm prompts, the instrument can be equipped with multi-channel temperature and humidity acquisition, and the number of channels can be customized according to the actual needs of customers;

[Password Protection]: The device buttons are equipped with password protection function to prevent non-management personnel from tampering with parameters.

[Communication interface]: Built-in mobile communication module to upload data to the cloud platform, built-in SIM card, SIM card with industrial-grade SIM card, with high temperature resistance, vibration resistance, electromagnetic interference resistance, moisture resistance, corrosion resistance and other characteristics, can be selected according to the needs of 2G version, 4G version. The device uses TCP/IP protocol stack and can configure device parameters through SMS commands.

[Installation method]: Wall-mounted hoist hole installation (spacing 77mm, rotating hole diameter 5mm) or hanging buckle installation (spacing 170mm)

【Power supply】:

①, 10-30vdc wide voltage power supply, the power plug is suitable for both power plugs and can adapt to the output of 5.5mm*2.1mm*11mm or 5.5mm*2.5mm*11mmDC round hole plug.

②, 10-30vdc wide voltage power supply, terminal power supply

③. With dual-power supply design and built-in rechargeable lithium battery, the instrument can still work normally in case of power outage, so you don’t need to worry about the instrument not working properly in the power outage state. The measurement process is convenient and there is no need to carry a power supply.

[Maximum power consumption]: 0.7W

[Default accuracy]: Humidity ±3%RH (60%RH, 25℃); Temperature ±0.5℃ (25℃);

[Transmitter circuit operating temperature]: -40℃~+60℃, 0%RH~80%RH

[Probe operating temperature]: -40℃~+120℃ Default: -40℃~+80℃

[Probe working humidity]: 0%RH-100%RH

[Temperature display resolution]: 0.1℃

[Humidity display resolution]: 0.1%RH

[Temperature and humidity refresh time]: 1s

【Long-term stability】: Humidity ≤1%RH/y; Temperature ≤0.1℃/y

[Response time]: Humidity ≤ 8s (1m/s wind speed); Temperature ≤ 25s (1m/s wind speed)

【Data upload interval】: 5s～24h can be set.

[Data recording interval]: The data saving interval can be set according to customer needs, 1min-60min can be set arbitrarily;

[Data recording frequency conversion function]: Once the temperature exceeds the standard, the monitoring system software will alarm synchronously, and the system will automatically switch to recording data every 2 minutes (the frequency conversion interval can be set by yourself).

[Data retransmission function]: In case of network failure, the device has data retransmission function to ensure data integrity. With built-in data storage function (memory ≥ 50,000 records), when the server is down, the device can store the received real-time data by itself, and automatically upload the stored data when the network is restored.

【Equipment management function】: Users can obtain equipment online and offline information through the management software platform. The software has scalable and open functions to meet the needs of future project system expansion;

[Battery life]: In the absence of power supply and data upload every 20 seconds, it can last for more than 48 hours after the mains power is cut off.

【Alarm method】

①. Alarm of this machine: built-in buzzer alarm, alarm sound: ≥80dB, the buzzer sound can be turned off at any time by pressing the button, and the sound and light alarm can be expanded externally; SMS alarm and ringing alarm for temperature and humidity exceeding the limit; SMS alarm and ringing alarm for mains power failure;

②. Cloud platform alarm: alarm pop-up window, SMS alarm, email alarm, WeChat alarm, alarm color reminder, audio alarm;

③. Local monitoring software alarm: alarm pop-up window, SMS alarm, voice alarm, email alarm, WeChat alarm, alarm color reminder, audio alarm;