Good Quality Digital Thermometer - PR721/PR722 Series Precision Digital Thermometer – Panran

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Good Quality Digital Thermometer - PR721/PR722 Series Precision Digital Thermometer – Panran Detail:

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 intervalsRelative temperature measurementMaximum, minimum and average value calculationElectrical value/temperature value conversionSensor correction value editingOver temperature alarmBuilt-in high precision real time clockOptional ℃, ℉, 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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