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New Product:PR721/PR722 Series Precision Digital Thermometer

2022-04-13

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.


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Technical Features

1.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.

2.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.

3.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.

4.Gravity sensing function, supports automatic screen flipping, and ideal reading experience can be obtained by placing it left or right.

5.Support Bluetooth or ZigBee communication, you can use Panran Smart Measurement APP to synchronize data or expand other applications.

6.Protection class IP64 for reliable use in harsh environments。

7.Ultra-low power consumption, built-in rechargeable lithium battery, continuous work for more than 130 hours.


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Other Functions

1. Volatility measurement at set time intervals

2. Relative temperature measurement

3. Maximum, minimum and average value calculation

4. Electrical value/temperature value conversion

5. Sensor correction value editing

6. Over temperature alarm

7. Built-in high precision real time clock

8. Optional ℃, ℉, K


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Technical ParametersElectrical

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

1.5 hours

DC5V 2A charging

Battery duration

≥80 hours

≥120 hours


Wireless communication

Bluetooth (effective distance ≥ 10m)

ZigBee(effective distance ≥50m)

in the same space


 Accuracy (One Year Calibration Period)

Measuring range

PR721 Series

PR722 Series

Remark

0.0000~400.0000Ω

0.01%RD+5mΩ

0.004%RD+3mΩ

1mA Excitation 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

PR721 Series

PR722 Series

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 N thermocouple

±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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Changsha Panran Technology Co., Ltd.

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