PR721/PR722 Series Precision Digital Thermometer

China National Explosion-proof

Keywords：

• Intelligent Sensor

• High Accuracy

• Wireless Communication

• U Disk Mode

• Ingress Protection Rating: IP64

1. Overview

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 as a whole adopts an aluminum alloy structure, has obtained the national explosion-proof safety certificate (CNEx22.3596X), and has an IP64 protection rating, enabling reliable use in harsh environments.

1.1 Appearance

1.2 Technical Features

1. Intelligent sensor: The temperature measurement range covers -200℃ to 1300℃. It uses high-temperature-resistant locking components. After the host is connected to the intelligent sensor, it can automatically load the type, temperature range and correction value of the current sensor, improving the accuracy of temperature traceability and work efficiency.

2. Low temperature drift: Within the range of 5℃ to 50℃, the electrical measurement accuracy is better than class 0.01, and the temperature resolution is 0.001℃, which can meet high-standard temperature calibration requirements.

3. USB flash drive mode: It can be charged or transfer data through the Micro USB interface, facilitating quick editing of test data.

4. Gravity sensing: It supports automatic screen rotation, and ideal reading experience can be obtained whether placed horizontally on the left or right.

5. Supports Bluetooth or ZigBee communication. The Panran Smart Metrology APP can be used for data synchronization or expanding other applications.

6. Protection rating IP64: It can be used reliably in complex environments.

7. Ultra-low power consumption: Built-in rechargeable lithium battery, with a continuous working time of more than 80 hours.

1.3 Others functions

Note 1：Temperature accuracy is converted from electrical accuracy.

3. Sensor Selection

3.1 Reference Sensor (Uses Pt100 wire-wound resistance elements, and is only compatible with PR722 series precision digital thermometers)

Note 1: The specifications do not include the dimensions of the connector; the overall dimensions of the sensor need an additional 40mm.

Note 2: The accuracy refers to the overall accuracy of the sensor and the thermometer.

3.2 Platinum Resistance Sensor (Uses Pt100 wire-wound or thin-film elements, compatible with the full range of precision digital thermometers)

Note 1: The specifications do not include the dimensions of the connector; the overall dimensions of the sensor need an additional 40mm.

Note 2: The accuracy refers to the overall accuracy of the sensor and the thermometer.

Note 3：APSK sensor adopts wire-wound platinum resistance.

3.3 Thermocouple Sensor (Type N thermocouple, compatible with the full range of precision digital thermometers)

Note 1：The accuracy includes the reference junction compensation error.

Note 2：The accuracy refers to the overall accuracy of the sensor and the thermometer.

Note 3：Thermocouple length can be customized.

4. Optional Accessories

The PR7200 multi-functional connector adopts a self-locking wiring method, allowing users to freely connect bare-wire or pin-type sensors with this accessory. The connector integrates a temperature sensor and a memory inside, which are used for measuring the reference junction of thermocouples and storing data such as sensor type and correction value. An intelligent sensor can be formed once connected. This accessory is applicable to PR721A/PR722A digital thermometers with Bluetooth function. The digital thermometer connects to the smart metrology APP on the mobile phone via Bluetooth, enabling easy reading or writing of sensor type and correction value information from the mobile phone.

The PR7200 multi-functional connector supports the following sensor types: Pt100/ Pt1000/ S/R/B/T/K/E/J/N.

5. Packaging Information

5.1 Packaging List

5.2 Portable Transport Case