Atmospheric pressure transmitter atmospheric pressure sensor modbus 485

Description

Atmospheric pressure transmitter atmospheric pressure sensor modbus 485
parameter:
Range: 0～100,110,120Kpa
Signal output: 4~20mA / RS485 MODBUS-RTU
Power supply range: 12 ~ 36VDC
Measurement accuracy: ≤ 0.2% F.S
Operating temperature: - 40 ° C ~ 80 ° C
Load (Ω): ≤ (U-7.5V) / 0.02
Response time: ≤ 1ms
Electrical connection: terminal block
Measuring medium: air
Applications Wind resource assessment Meteorological research Environmental monitoring Features ? High level linear voltage output.
Pressure range: 15 to 115 kPa (4.43 to 34.0 in. Hg)
Accuracy: + / - 1.5 kPa maximum uncorrected offset (+ / - 0.443 in.Hg)
Each sensor contains a calibration table that specifies the offset correction value
Output signal: 4 ~ 20mA
Output tilt: 0.046volts / kPa (0.155 V / inHg)
Output offset: 0.55 kPa (3.115 inHg) 0 output
Half span output tilt: 0.023 volts / kPa (0.077 V / inHg)
Nonlinear: 0.1% of the maximum
Power supply voltage: 7 to 35 VDC
Supply current: up to 15 mA (standard 8 mA)
On time: 15 milliseconds
Communication interface: RS485.
Communication format: 1 start bit, 8 data bits, no parity, 1 stop bit.
Baud rate: 9600 (can be changed by software).
Address: 1 (can be changed by software).
Communication method: The monitoring host and the device adopt one-to-one (or one-to-many) master-slave query mode.
Data Protocol: MODBUS-RTU
feature:
Note: Unless otherwise specified, the data in all the following commands is hexadecimal, and the slave address is the default 01.
Register Address (16bit/word): 00H/01H
Read and write features: read / read
MODBUS address: 00H/01H
Storage contents: barometric pressure / temperature value
Note: Do not connect the power supply voltage to other terminals except the power supply, otherwise the module will be burned. Read the data code
Read barometric data:
Send: 01 03 00 00 00 01 C4 0B
Back: 01 03 02 00 00 B8 44
Set the station number (function code: 16H)
For example, the initial station number is 01 and the station number is set to 02.
The host sends: 01 16 00 00 "00 02" C9 C8 (00 02 indicates the set station number)
Slave return: 02 16 00 00 00 FF 08 7A (Indicating that the setting is completed, the station number takes effect immediately)
For example, the initial station number is 01, and the station number is set to 03.
The host sends: 01 16 00 00 "00 03" 08 08 (00 03 indicates the set station number)
Slave return: 03 16 00 00 00 FF 09 AB (Indicating that the setting is completed, the station number takes effect immediately)
For example, the initial station number is 03, and the station number is set to 04.
The host sends: 03 16 00 00 "00 04" 48 28 (00 04 indicates the set station number)
Slave return: 04 16 00 00 00 FF 08 1C (Indicating that the setting is completed, the station number takes effect immediately)
packing:1PC
Warranty period：120 days
On Nov-01-19 at 01:55:21 PDT, seller added the following information: