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.