ZRN-WS-D digital temperature and humidity sensor

ZRN-WS-D digital temperature and humidity sensor
 

Product description:

Digital temperature and humidity transmitter
There are LCD display



No LCD display
Product Description:
ZRN-WS-D Digital temperature and humidity transmitter uses imported humidity capacitance humidity sensor and platinum RTD temperature sensor, the product has a full range of high accuracy, stability, consistency, fast response (temperature, humidity, temperature, humidity, user selectable), etc. . ZRN-WS-D Digital temperature and humidity transmitter communication protocol into the standard modbus protocol and can be custom-Switzerland agreement. Products can be easily networked communications with other devices of the same protocol, or for software development, using the configuration software configuration. In Switzerland Can instrument developed various kinds of functions of data management software. The digital sensors have been successfully used in China Mobile Beijing Company, room monitoring project and other projects.

Features:

Room, smart buildings, hotels supermarkets, archives, production workshops, drug libraries, environmental monitoring and other occasions. Transmitter Output Standard RS-232 or 485 communication interface, can be directly connected with the computer.

Beijing Sino-Swiss can Instrument Technology Co., Ltd. made a corresponding temperature and humidity monitoring and control software.
Technical Parameters:
ZRN-WS-D
Digital temperature and humidity transmitter
Power supply
12VDC ± 10% 12VAC ± 10%
24VDC ± 10% 24VAC ± 10% Other operating power (specify)
Temperature parameters
Temperature Sensor
Pt100 platinum resistance
Temperature measurement range
(0~50) ℃, (0~80) ℃,
(-20~60) ℃, (-40~80) ℃
Measurement Accuracy
Pt100: better than ± 0.5 ℃ (0 ~ 50 ℃)
Humidity parameters
Humidity Sensor
Humidity Capacitance technology using patented solid polymer structure
Operating temperature
-40~80℃
The reaction time (ta)
Typical values ​​(5s
Long-term stability
Typical values ​​0.5% RH / Year
Effective range
10 ~ 95% RH
Measurement Accuracy
± 3% RH (20 ~ 90% RH, 20 ℃ non-condensing)
± 2% RH (20 ~ 90% RH, 20 ℃ non-condensing)
output signal
1, RS232 Interface
2, RS485 Interface
Transmitter power reference
12V / 50mA
24V / 50mA
working environment
Humidity: 5 ~ 95% RH non-condensing temperature: -40 ~ 80 ℃
Transmitter material
ABS plastic
Dimensions
120 * 80 * 42mm
Colour
milky
weight
140g
installation
Wall-mounted
Communications Description
It can be connected via standard serial DB-9 interface with the computer, when the transmission distance of 15 meters, the symbol distortion rate is only 4%; 485-232 conversion interface when connected to a computer via a standard serial interface, the transmission distance of 1500 m When the symbol distortion is less than or equal to 4% in full compliance with EIA (Electronic Industries Association) serial bus standard. When long-distance transmission, it is best to use shielded twisted pair.


Shape Illustration:

Wiring diagram:
Product Selection:
ZRN-WS-D port R port T port H mouth digital temperature and humidity transmitter
ZRN-WS-D
Digital temperature and humidity transmitter
R port
2 = RS232 interfaces 4 = RS485 Interface
T port
temperature range
0 = No temperature output 1 = (0 ~ 50) ℃
2= (0~80) ℃ 3= (-20~60) ℃
4 = (-40 ~ 80) ℃ 9 = user-specified
H mouth
Accuracy
1 = ± 3% (default)
2=±2%
N
Default No Display
C
LCD display
Selection example:
If you choose to bring with RS485 communication interface, temperature: (0-50) ℃
The default precision, with LCD display temperature and humidity transmitter, model JCJ100NR4T1H1C
Communication Description:
ZRN-WS-D Through standard RS232 or RS422 / 485 communication port can be directly connected to a computer communications, compatible with both protocols at the same time:
A communication protocol (in REpower Protocol):
Communication protocol as follows:
Communication format: 1 start bit, 8 data bits, no parity, 1 stop bit.
All bytes HEX format, the command format is as follows:
Data is read from the sensor instruction format:
Sensor address
Read data instruction
The first two bytes XOR checksum
Address: One byte such as:. 00H indicates that the address is set to 00 sensors
Read data instruction: 00H indicates a byte MCU PC To read the contents.
XOR checksum: a byte value before or after the two bytes dissimilar.
Sensor return data format:
Native address
Eight low temperature sample values
Temperature high eight samples
Humidity low eight samples
Humidity high eight samples
The first five-byte XOR checksum
Native Address: sensor return address of the machine, one byte.
Temperature low eight samples: a byte, 00-FF hexadecimal values.
Temperature high eight samples: a byte, 00-03 actually hexadecimal values.
Humidity low eight samples: a byte, 00-FF actual hex value.
Humidity high eight samples: a byte, 00-03 actual hex value.
The first five-byte XOR checksum values: hexadecimal value after the first five bytes of XOR.
PC, read samples from the lower machine process:
Every PC confidential data to be transmitted when reading a data read instruction to the sensor, if the sensor correctly receives the return data to the PC. If the sensor receives the incorrect answer .PC should not read data retransmission instruction to the sensor .
Note: All data are hexadecimal numbers, at any time, did not receive the response of the sensor data must be retransmitted to read instructions to the sensor If, PC issues a read data command.
PC range conversion method:
Let: A starting temperature value, B full scale temperature value, D sampling value PC (converted to decimal value after) the current temperature value = D * (BA) / 1024 + A
Such as: temperature range (-40-80) ℃, the actual temperature value = sample value * (80- (-40)) / 1024 + (-40) = Sample value * 120 / 1024-40
Humidity actual value = Sample value * 100/1024 can be.
Communication Agreement II (standard MODBUS-RTU communication protocol):
Using the standard MODBUS communication protocol when using the configuration software, are required to use the equipment for MODICON (Modicon) of the PLC, MODBUS-RTU address type data to an integer 16. Supports MODBUS protocol 03H, 04H, 06H instruction ( 03H, 06H read and write parameters, 04H read the measured value),
Parameter Register Address
parameter
Settings
The factory default
Communication instruction
Register Address
Temperature measurements
/
/
04H
00H
Humidity measurements
/
/
04H
01H
Native address
0-255
1
03H, 06H
00H
Baud rate
300-19200
9600
03H, 06H
01H
Temperature corrected translation
-99.9-99.9
0.0
03H, 06H
02H
Humidity correction translation
0-99.9
0.0
03H, 06H
03H
The lower limit temperature transmitter
-99.9-99.9
-40.0
03H, 06H
64H
The upper limit of the temperature transmitter
-99.9-99.9
80.0
03H, 06H
65H
Example 1: read the temperature measured value (measured value = 1000)
Send data: 01 04 00 00 00 01 31 CA
Among them, 01 are native address, 04 is communication instruction, 0000 is the starting address register, 0001 represents read a number, 31 CA is a checksum.
Returns data: 01 04 02 03 E8 B9 8E (which corresponds to 03 E8 measured value)
Among them, 01 are native address, 04 is communication instruction, 02 returned values ​​of bytes of data that is measured, B9 83 to test the code.
Example 2: Read parameter value the machine address (local address = 1)
Send data: 01 03 00 00 00 01 84 0A
Among them, 01 are native address, 03 is communication instruction, 0000 is the starting address register, 0001 represents read a number, 84 0A is the checksum.
Returns data: 01030200017984
Among them, 01 are native address, 03 is communication instruction, 02 returned values ​​of bytes of data that is the address of the machine, the 7984 is a check code.
Example 3: Write parameter value of the machine address (local address = 1, write a value of 2)
Send data: 01 06 00 00 00 02 08 0B
Among them, 01 are native address, 06 is communication instruction, 0000 is a register address, 0002 represents a parameter value, 08 0B is the checksum.
Return data and send the data is consistent.
Note: For industrial configuration software
Temperature and humidity measurements, respectively register 3x001 and 3x002;
Device address registers used for the 4x001;
Baud rate registers used as: 4x002;
Temperature deviation correction using registers: 4x003;
Humidity bias correction using registers: 4x004;
The lower limit temperature transmitter used registers: 4x101;
The lower limit temperature transmitter used registers: 4x102;
RS485
ZRN-WS-D Series RS-485 communication lines using shielded twisted pair, and one end of RS-232/485 converter module to the computer's serial port and the other end to the RS-485 module communication terminals connected mode as shown:
Core shielded cable shield is preferably a single-ended device is connected to the protective ground. When a computer linked to more than one meter, network topology bus, and each device must be directly connected to the mains . To reduce signal reflection interference Alternatively relay module communication distance is long.