Chinese wholesale Precision Digital Thermometer - PR721/PR722 Series Precision Digital Thermometer
Vendor: Warehouse
DESCRIPTION
PR721 series precision digital thermometer adopts intelligent sensor with locking structure, which can be replaced with sensors of different specifications to meet different temperature measurement needs. The supported sensor types include wire-wound platinum resistance, thin-film platinum resistance, thermocouple and humidity sensors, which can automatically identify and load the type, temperature range and correction value of the connected sensor. The thermometer is made of aluminum alloy as a whole, with IP64 protection class, which can be used reliably in harsh environments.
Technical Features
- Smart sensor, the temperature range covers -200~1300℃. Using high temperature-resistant locking components, the host can automatically load the current sensor type, temperature range and correction value after connecting to the smart sensor, improving the accuracy of temperature traceability, and work efficiency.
- Low temperature drift, in the range of 5~50℃, the electrical measurement accuracy is better than 0.01, and the resolution is 0.001℃, which can meet the high standard temperature calibration requirements.
- In U disk mode, charging or data transmission can be performed through the Micro USB interface, which is convenient for quick editing of test data.
- Gravity sensing function, supports automatic screen flipping, and ideal reading experience can be obtained by placing it left or right.
- Support Bluetooth or ZigBee communication, you can use Panran Smart Measurement APP to synchronize data or expand other applications.
- Protection class IP64 for reliable use in harsh environments。
- Ultra-low power consumption, built-in rechargeable lithium battery, continuous work for more than 130 hours.
Other Functions
Volatility measurement at set time intervalsRelative temperature measurementMaximum, minimum and average value calculationElectrical value/temperature value conversionSensor correction value editingOver temperature alarmBuilt-in high precision real time clockOptional ℃, ℉, KGeneral Parameters
| Electrical Accuracy (One Year Calibration Period)Model | PR721A PR722A | PR721B PR722B | Remark |
| External dimensions | φ29mm×145mm | Sensor not included | |
| Weight | 80g | Weight with battery | |
| Data storage capacity | 8MB(Store 320,000 sets of data) | Contains time information | |
| External interface | Micro USB | Charging/data | |
| Battery specifications | 3.7V 650mAh | Rechargeable lithium battery | |
| Charging time | 1.5hours | DC5V 2Acharging | |
| Battery duration | ≥80hours | ≥120hours | |
| Wireless communication | Bluetooth (effective distance ≥ 10m) | ZigBee(effective distance ≥50m) | in the same space |
Electrical Accuracy (One Year Calibration Period)
| Measuring range | PR721Series | PR722Series | Remark |
| 0.0000~400.0000Ω | 0.01%RD+5mΩ | 0.004%RD+3mΩ | 1mAExcitation current |
| 0.000~20.000mV | 0.01%RD+3μV | Input impedance≥100MΩ | |
| 0.000~50.000mV | 0.01%RD+5μV | ||
| 0.00000~1.00000V | 0.01%RD+20μV | ||
| Temperature Coefficient | Resistance:5ppm/℃Voltage:10ppm/℃ | Resistance:2ppm/℃Voltage:5ppm/℃ | 5℃~50℃ |
Temperature Accuracy (Converted from Electrical Accuracy)
| Sensor type | PR721Series | PR722Series | Resolution |
| Pt100 | ±0.04℃@0℃±0.05℃@100℃±0.07℃@300℃ | ±0.02℃@0℃±0.02℃@100℃±0.03℃@300℃ | 0.001℃ |
| Type S thermocouple | ±0.5℃@300℃±0.4℃@600℃±0.5℃@1000℃ | 0.01℃ | |
| Type Nthermocouple | ±0.2℃@300℃±0.3℃@600℃±0.3℃@1000℃ | 0.01℃ | |
| Reference junction compensation | ±0.15℃@RT±0.20℃@RT±20℃ | 0.01℃ | |






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During the past few years, our business absorbed and digested state-of-the-art technologies the two at home and abroad. Meanwhile, our firm staffs a group of experts devoted to your development of Chinese wholesale Precision Digital Thermometer - PR721/PR722 Series Precision Digital Thermometer – Panran , The product will supply to all over the world, such as: Libya, Bangladesh, Uruguay, We provide good quality but unbeatable low price and the best service. Welcome to post your samples and color ring to us .We will produce the goods according to your request. If you are interested in any products we offer, please feel free to contact us directly by mail, fax, telephone or internet. We are here to answer your questions from Monday to Saturday and looking forward to cooperating with you.
Shipping
Orders are processed within 1–3 business days. Delivery usually takes 5–12 business days, depending on your location. Once your order ships, you’ll receive a tracking number via email. Please note that delivery times may vary during high-demand periods or holidays.
RETURN POLICY
We offer a 30-day return policy for unused items in their original condition and packaging. If your product arrives damaged or defective, please contact us within 48 hours of delivery. Customer satisfaction is our priority, and we’ll do our best to resolve any issues quickly.
