Temperature and Humidity Transmitter Sensor RS485 Modbus RTU 4-20Ma 0-10V 0-5V Analog Air Mositure Probe Monitor Wall Mounted Industrial Agricultural Greenhouse (4-20Ma)
- High-precision temperature and humidity sensor transmitter RS485 industrial and agricultural waterproof greenhouse monitoring and control meter
- 4-20mA 0-10V 0-5V RS485 output
- DC power supply DC10-30V (0-10V type recommends 24V power supply)
- Temperature accuracy +0.5°C (25°C) Humidity accuracy +3%RH (60% 25*C) Temperature range -40°C~+80°C (default) -40°C~+120*C (customizable)
- Humidity range 0%RH~1 00%RH Product size 110*85*44mm
Product Description
Description
The transmitter is widely used in applications requiring temperature and humidity monitoring such as agricultural greenhouses/flower cultivation. The input power supply in the sensor, the sensor probe, and the signal output are completely isolated. It is safe and reliable, beautiful in appearance and easy to install.
Features
This product uses a high-sensitivity digital probe, with stable signal and high precision. It has the characteristics of wide measurement range, good linearity, good waterproof performance, convenient use, easy installation, and long transmission distance.
Interface Description
The power interface is a wide-voltage power supply that can input 10-30V, and can only use 24V power supply for 0-10V output devices. For analog products, pay attention to the positive and negative signal wires, and do not reverse the positive and negative connections of the current/voltage signal wires.
Installation method
The wall-mounted king-shaped shell is wall-mounted installation. The installation holes are located in the middle of both sides of the device. The installation hole diameter is less than 4mm, and the hole distance is 105mm. It can be installed with 3mm self-tapping screws.
System frame diagram
Parameter
DC power supply (default): 10~30V DC (for 0-10V output devices, only 24V power supply can be used)
Maximum power consumption: current output 1.2W; voltage output 1.2W
Accuracy (default): Humidity ±3%RH (60%RH, 25°C), temperature ±0.5°C (25°C)
Working temperature of transmitter circuit: -40℃~+60℃, 0%RH~80%RH
Probe working temperature: -40℃~+120℃, default -40℃~+80℃
Probe working humidity: 0%RH-100%RH
Display resolution: humidity 0.1%RH, temperature 0.1℃
Long-term stability: humidity ≤1%RH/y, temperature ≤0.1℃/y
Response time: Humidity ≤8s (1m/s wind speed), temperature ≤15s (1m/s wind speed)
Output signal: current output 4~20mA, voltage output 0~5V/0~10V
Load capacity: voltage output resistance ≤250Ω; current output resistance ≤600Ω
Refresh time: 1s
When the system needs to connect to an analog version sensor, you only need to supply power to the device, and at the same time connect the analog output line to the DI interface of the microcontroller or PLC, and write the corresponding acquisition program according to the conversion relationship below.
When the system needs to connect to multiple analog quantity sensors, it is necessary to connect each sensor to each different single-chip analog quantity acquisition port or PLC DI interface, and write the corresponding acquisition program according to the conversion relationship below.
Four-wire connection and three-wire connection
Analog type sensor wiring
The analog sensor wiring is simple, just connect the wire to the designated port of the device. The standard equipment is equipped with 2 independent analog output. Adapt to the three-wire system and the four-wire system at the same time.
Meaning of analog parameter
1, Analog 4-20mA current output
Current value: 4mA; Temperature: -40℃; Humidity 0%; Current value: 20mA; Temperature: 80℃; Humidity 100%
The calculation formula is P temperature=(I(current)-4mA)*7.5-40(℃) The calculation formula is P humidity=(I(current)-4mA)*6.25(%), and the unit of I is mA.
For example, the humidity of the collected data under the current situation is 16 mA, and the calculated humidity value is 75% at this time. The temperature is 8 mA, at this time the calculated temperature value is -10 ℃.
2, Analog 0-10V voltage output
Voltage value: 0V; temperature: -40℃; humidity: 0%; Voltage value: 10V; temperature: 80℃; humidity: 100%
The calculation formula is P temperature = V (voltage) * 12-40 (℃). The calculation formula is P humidity = V (voltage) * 10 (%). For example, the humidity of the collected data under the current situation is 4 V, and the calculated humidity value is 40% at this time. The temperature of the collected data is 6 V, and the value of the calculated temperature at this time is 32°C.
3. Analog 0-5V voltage output
Voltage value: 0V; temperature: -40℃; humidity: 0%; Voltage value: 5V; temperature: 80℃; humidity: 100%
The calculation formula is P temperature=V(voltage)*24-40(℃) The calculation formula is P humidity=V(voltage)*20(%). For example, the humidity of the data collected in the current situation is 2 V, and the calculated humidity value is 40% at this time. The temperature of the collected data is 4V, and the value of the calculated temperature is 56 ℃ at this time.
Item Specification
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Item model number TDJLHUMTEMPPVCPROBE Style 4-20mA Package Dimensions 8.74 x 6.14 x 1.73 inches; 0.01 ounces
- Product Dimensions: 6.14 inches x 8.74 inches x 1.73 inches. Weight: 0.01 oz
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Our standard shipping service is FREE.
Your order will be shipped within 1-3 business days upon full payment received.
Most items are delivered within 3-5 business days, however, please allow 3-10 business days.
We are shipping only to USA.
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We are not responsible for undeliverable addresses.
- We offer a 30 day return policy from checkout winning date.
Your satisfaction is guaranteed! If for any reason you are unhappy with your item, just return it within 30 days for a full refund, minus shipping cost. Please contact us prior to initiating a return so that we can issue you a refund authorization.
Items defective upon receipt must be packaged in their retail packaging as if new and returned with a detailed description of the problem.
Return shipping fees are not refundable.
We reserve the right to decline any returns if the above guidelines are not followed.
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