Rainbow RK086 User manual

INSTRUCTION
MANUAL
LCD screen Temperature and humidity
transmitter
TYPE RS485
PN:RK086
VER1.1
Jinan Rainbow Technology Co.,Ltd.

ⅠBrief Introduction
1.1 Product Overview
This product adopts high-sensitivity digital probe, the
signal is stable and the precision is high. It has the
characteristics of wide measurement range, good linear degree,
good waterproof performance, convenient use, easy
installation and long transmission distance.
Suitable for indoor, flat environment, LCD large-screen
real-time display, easy to use key operation.
1.2 Primary Parameters
TABLE 1 Primary Parameters
PARAMETERS
TECHNICAL SPECIFICATIONS
POWER SUPPLY
12-24V DC
POWER
0.4w
OUTPUT SIGNAL
RS485

RESPONSE TIME
≤15S
LONG-TERM STABLE TEMPERATURE
≤0.1℃/year
LONG-TERM STABILITY OF HUMIDITY
≤1%y
TEMPERATURE RANGE
-40℃-80℃
HUMIDITY RANGE
5-95%RH
TEMPERATURE RESOLUTION
0.1℃
HUMIDITY RESOLUTION
0.1%RH
POWER CONSUMPTION
≤0.15W(@12V DC , 25℃)
PRESSURE RANGE
0.9-1.1atm
1.2.1 Temperature parameters
CONTENT
MIN
Typical
value
MAX
UNIT
Resolution（14bit）
-
0.01
-
℃
Linear deviation
-
±0.3
TABLE 2
℃
Repeatability
-
±0.1
-
℃
Work range
-40
-
125
℃
Response time (63%)
5
-
30
Second

Long-term drift
-
<0.04
-
℃/year
TABLE2 Temperature measurement accuracy at different
temperatures
As shown in the above table, the maximum deviation is
within ±0.5 in the range of 5-60 degrees Celsius, and the
deviation increases with less than 0 degrees Celsius and
greater than 60 degrees Celsius.
1.2.2 Humidity parameter
CONTENT
MIN
Typical
value
MAX
UNIT
Resolution（12bit）
-
0.04
-
%RH
Linear deviation
-
±3.0
TABLE 3
%RH
Repeatability
-
±0.1
-
%RH
Work range
0
-
100
%RH
Response time (63%)
-
8
-
Second

Long-term drift
-
<0.5
-
%RH /year
Hysteresis
-
±1
-
%RH
Non-linearity
-
<0.1
-
%RH
TABLE3 Humidity measurement accuracy at different
humidity
As shown in the above table, the deviation increases with
a typical deviation of ±3% in the 20-80% RH range, less than
20%, and greater than 80% humidity.
1.2.3 Effect of Temperature on Humidity
Measurement
Table 3 describes the effect of different humidity
conditions on the humidity measurement. The following table
describes the effects of different temperatures on the humidity
measurement accuracy.
TABLE 4 Relative humidity at different temperatures

As shown above, in the humidity range of 15°C to 55°C, 30
to 80, the accuracy of the humidity is the highest, which is ±
4.5%, and the humidity increases in the rest of the cases.
1.3 System frame Diagram

FIGURE 1 SINGLE-ENDED

FIGURE 2MUTIPLE-ENDED

ⅡHardware Connection
2.1 CHECKING BEFORE INSTALLATION
Check the list of devices before installation:
TABLE 5 List of Devices
Name
Number
THE SENSOR DEVICE
1
12V POWER ADAPTER（Optional）
1
WARRANTY CARD / CERTIFICATE
1
THE USB TO 485 DEVICE（Optional）
1
2.2 Interface Description
The power interface is wide-voltage power input
12-24V. When wiring the 485 signal cable, note that

the A/B lines cannot be reversed. The addresses of
multiple devices on the bus must not
conflict.
FIGURE 3 PHYSICAL PICTURE
TABLE 6 Wiring Sequence
NO
.
Instructions NO
.
Instruction
s
1 Power Supply Positive（12-24V DC）5 485-A
2 Power Supply Negative 6 485-B
7 Sensor Supply Positive 3 SCL
8 Sensor Supply Negative 4 SDA
Note: When sensors are built-in, 3, 4, 7, 8 are free.

Use a screwdriver to press down on the yellow buckle.
Insert the wire into the crimping hole and release the yellow
buckle to lock the wire.
Precautions: Please take care not to take the wrong line
sequence, the wrong wiring will cause the equipment to burn.
The factory default is to provide 0.6 meters long wire rods.
Customers can extend the wire rods as required or sequentially.
Note that there are no yellow lines in the wire sequences
that may be provided in some factory batches, in which case the
gray line is equivalent to replacing the yellow
line.

Label
position
Features
Label
position
Features
1
Tenth of current
humidity
S1、S3
Temperature and
humidity alarm
sign
2
The single digit of
the current humidity
S2、S4
Temperature and
humidity unit
symbols
3
The current
humidity is decimal
places
X1、X2
Temperature and
humidity lower
limit alarm
4
Tenth of current
temperature
X4、X5
Temperature and
humidity lower
limit alarm
5
The single digit of
the current
temperature
P1、P2
Decimal point
6
The current
temperature is
decimal places
X3
Temperature is
negative flag
2.3 Installation
The wall-mounted large-screen sensor adopts the
installation form of the inverted hoist hole, and the customer

can mount the screw with a distance of 60mm.
Connect the cables to the terminals of the transmitter
backplane according to the correct wiring sequence. Then
install the backplane on the wall and close the transmitter.
The installation location needs to pay attention to the
following matters:
1, the transmitter should be placed as far as possible
vertical, to ensure the installation of the wall, the sensor under
the transmitter (transmitter font is positive);
2. The installation height is the height of the human body
or the environmental area where the main requirements are
measured.
Also note the following precautions:
1. Avoid installing in a zone that is prone to heat transfer

and will directly cause a temperature difference with the area
to be measured. Otherwise, the temperature and humidity
measurements will be inaccurate.
2. Install in a stable environment, avoid direct lighting,
keep away from windows, air conditioners, heating, etc. Avoid
direct access to windows and doors.
3, as far as possible away from high-power interference
equipment, so as not to cause inaccurate measurements, such
as inverters, motors and soon.
ⅢConfiguration Tool Installation
and use
We provide supporting "sensor monitoring software" that
can easily use the computer to read the sensor's parameters,
while flexibly modifying the sensor's device ID and address.
3.1 Sensor Access Computer
Transmitter can be connected to PC with the RS485 to USB
adapter. You can check the COM port number through Device
Manager (right click My Computer).

As shown in the above figure, your serial port number is
COM10. Please remember this serial port, you need to fill in
the serial port number in the sensor monitoring software.
If you do not find the COM port in the Device Manager, it
means that you did not insert the USB to 485 or the driver is
not properly installed. Please contact the technical personnel
for help.
3.2 How To Use Configuration Tool
The configuration interface is shown in the figure. First of
all, according to the method of Section 3.1, you can obtain the
serial port number and select the correct serial port. Then click
to automatically obtain the current baud rate and address to
automatically detect all devices and baud rates on the current
485 bus. . Please note that the use of software to automatically
obtain the need to ensure that only one sensor on the 485 bus.

Then click on the connected device to get sensor data
information in real time.
If your device is a gas concentration sensor, select "Gas
Concentration Sensor" at the sensor type, "Formaldehyde
Transmitter" for the formaldehyde sensor, "Analog Transmitter
Module" for the analog transmitter, and "Atmospheric
Pressure" for the atmospheric pressure sensor. Sensor, "light
intensity 20W" is selected for the illuminance sensor, "Oxygen
transmitter" is selected for the oxygen sensor, and the default
"No other sensor" is selected for other sensors.
3.2.1 Modify the baud rate and device ID
Click the device baud rate and setting address in the
communication setting when the device is disconnected to

complete the related settings. Please note that after the setting,
please restart the device, and then "automatically obtain the
current baud rate and address" can be found after the address
And baud rate has been changed to your desired address and
baud rate.
If you need to use the modbus instruction to modify the
baud rate and address, you can refer to the appendix "How to
use the modbus instruction to modify the baud rate and
address".
3.2.2 Menu Operation
Step 1. Display status Press “Menu” key to enter the first
level menu setting, and then press “Menu” key to exit “Key
function” display.
Step 2. Enter the password “215” in the first level menu to

enter the secondary menu.
Step 3. Press the "SHIFT" key to shift, press the "SET" key
to set the parameters, then press the "SHIFT" key to confirm,
press the "Menu" key to exit and return.
A menu, enter the password to enter the setting state.
Secondary menu list:
Symb
ol
Parameter
name
Ranges
Defaults
S00
Moisture
correction
parameters
0-1000（Representatives
-499 to 499）Note 1
500
S01
Temperature
correction
parameters
0-1000（Representatives
-499 to 499）Note 2
500
S02
Humidity alarm
limit
0-999
900
S03
Humidity alarm
lower limit
0-999
000
S04
Temperature
alarm limit
-200-600
400
S05
Temperature
alarm lower
limit
-200-600
000
S06
Humidity drop
—Note 3
50
S07
Temperature
drop
—
50
S08
Device ID
0-252
1

S09
Device baud
rate
2400/4800/9600
9600
Note 1: The humidity correction parameter is based on
500. If the current humidity is 43.5% RH and the display
humidity is 40.0% RH, then the correction parameter to be
written is 535.
Note 2: The temperature correction parameter is based
on 500. If the current temperature is 23.5°C and the display
humidity is 25.0°C, then the correction parameter to be written
is 485.
Note 3: The upper limit alarm value is greater than the
lower limit alarm value, and the return difference value is less
than the upper and lower limit difference. If the humidity fall
value is 50, the alarm disappears when the alarm occurs and
the distance alarm is 5%RH.
ⅣCommunication
Protocol
4.1 Communication Basic Parameters
PARAMETERS
CONTENT

Code
8-bit binary
Data bits
8 bit
Parity bit
No
Stop bit
1 bit
Error checking
CRC (redundant loop code)
Baud rate
2400 bps/ 4800 bps/ 9600 bps can be set
factory defaults to 9600 bps