RS485 4-20mA 0-10V Air Digital Display Differential Pressure Transmitter

• Type: Normal Pressure Transmitter
• Structure Type: Diffused Silicon Pressure Transmitter
• Measuring Medium: Air Oil Water
• Accuracy Grade: 0.5G
• Pressure range: -10~10kpa
• IP Rating: IP65
• Model NO.: QDF70B
• Certification: CE
• Customized: Customized
• Product Name: LED LCD Display Differential Pressure Transmitter
• Measuring Range: -10~10kpa
• Output Signal: 4-20mA/1-5V/0-5V/0-20mA/RS485
• Power Supply: DC10-36V
• Accuracy: 0.5%Fs
• Transport Package: 1 Product with a Manual in a Box
• Specification: 400g
• Trademark: QIDIAN
• Origin: China
• HS Code: 9026201090
• Production Capacity: 100pieces/ Day

Product Description

Product Description

<1>This differential air pressure transmitter, adopting the imported high-precision, high stability micro-pressure chip.
<2>The shell is aluminum alloy structure. The two pressure interfaces are M10 screw thread and cock structure. (Customer can choose the size of pressure interfaces.) It can be directly installed on the measuring pipe or connected by the pressure pipe,easy to install and use.
<3>Milli voltage, standard voltage, current, frequency signal output are available to choose.
<4>The transmitter is widely used in petroleum, chemical industry, metallurgy, electric power and other fields. It effectively control in power and coal industries, such as boiler ventilation and underground ventilation.

Product Parameters

Measure Medium	Dry gas (low corrosion)
Measuring Range	-10~0~1KPa~10KPa
Power Supply	12VDC~36VDC(Standard24VDC)
Output Signal	4~20mA;1~5V;0~10mA;0~20mA;0~5V;
Medium Temperature	-40ºC~85ºC
Compensation Temperature	0~50ºC
Ambient Temperature	-20ºC~85ºC
Pressure Type	Differential Pressure
Accuracy	0.2%FS;0.5%FS
Temperature Effect on Zero	±0.03%FS/ºC
Sensitivity Temperature Drift	±0.03%FS/ºC
Overload  Pressure	300%FS
Response Time	≤10ms
Waterproof	IP65
Material	Aluminium Alloy
Process Connection	M20X1.5 Male/1/8''NPT Male Customized
Explosion-proof Grade	Exia II CT5(safe explosion proof type)

Detailed Photos

Selection

Wiring

Debugging Method

Open the HSM connector and screw down the stainless steel tube, you can see the  Zero and Span resistor, connect power supply and ammeter (over 0.2 level), then you can adjust it, the steps as following:

1. When the transmitter is not pressurized, adjust the Zero resistor to make it output current 40mA.

2. The transmitter is pressurized to full range,adjust the Span resistor to make it output current 20mA.

3. Repeat the above steps 2 or 3 times until the signal is normal. After adjustment, tighten the protective cover.

 

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