Brief Introduction to the HART protocol Communicator

For the application of the HART protocol, we will introduce the hand-held HART communicator. What are the characteristics of the application of this product? Let's introduce it to you. Through the picture, we can see the appearance of this product, then the model of this product is ESC-375H. It features: The HART375C handheld device is a handheld device that provides a public communication interface for All HART devices, it is mainly used in the industrial field to configure, manage, maintain, and adjust the operating instruments and monitoring process variables ｡

Performance: fully compliant with Common commands for standard HART protocol products. It is powered by a three-node alkaline battery No. 5 or Ni-Mh rechargeable battery for 13 hours ｡

Technical indicators:

1. The HART interface complies with the HCF (HART communication Foundation) protocol and works in two-way half-duplex 1200bit/s mode.

2. The common mode voltage that the HART interface can receive is ± 40 V.

3. The typical leakage current value is less than 1uA @ 20 ℃.

4. HART? Interface communication distance <1500 m

5. Isolation Mode: the HART protocol communication interface is isolated from the power supply.

6. Isolated withstand voltage: 500 Vrms

7. LCD screen: 8 rows, 21 characters per line

Physical size: 228mm × 98mm × 60mm

Environment requirements:

1. operating temperature range: 0 ℃ -- + 50 ℃

2. Storage Temperature range:-20 ℃ -- + 55 ℃

Function: Can a HART handheld device connect to any HART through a 4-20mA current loop? Compatible device, which must have a load resistance of at least 250 Ω in the current ring. The HART handheld device uses the high-frequency digital signal Bell202 Frequency Shift Keying (PSK) technology, it can be transmitted on a 4-20mA current signal. The communication between the handheld device and the HART protocol compatible device does not affect the 4-20mA analog signal ｡