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Smart Absolute Pressure Transmitter

Categories Pressure Transmitters, Smart Industrial Transmitters

Smart Absolute Pressure Transmitter

The ADDA-P Series smart absolute pressure transmitter uses diffused silicon piezoresistive sensing technology and an embedded signal processing module for static pressure and temperature compensation. It supports pressure and level applications with media compatible with the wetted materials. Refer to the model-specific range table when selecting a configuration.

Authoritative Qualification Certifications

We hold ISO quality certification, national high-tech enterprise qualification, China measuring instrument type approval, and explosion-proof and safety certifications to support reliable product quality.

Custom Engineering

Configurable materials, connections, signals, displays, and installation solutions for different process environments.

Product Features

The ADDA-P Series uses a diffused silicon sensor chip manufactured with advanced MEMS technology. It provides high accuracy, high overpressure resistance, and stable performance. An embedded signal processing module combines static pressure and temperature compensation to maintain measurement accuracy and long-term stability across a wide range of pressure and temperature conditions.

Diffused silicon piezoresistive technology provides stable performance and accuracy up to 0.1%F.S.
Turndown ratio up to 5 : 1.
A high-performance EMC protection circuit module reduces the influence of electromagnetic interference on the output.
High stability: ±0.1% Span/year.

Applications

Pressure and level measurement.

Measuring Medium

Media compatible with the wetted materials.

Performance Specifications

Accuracy	±0.1%, ±0.2% Upper Range Limit, see specifications for details
Range	10kPa~2MPa, see selection table for details
Annual Stability	±0.1% Span/year
Ambient Temperature Influence	see specifications for details
Voltage Influence	When the supply voltage varies within 10.5V/16.5V~36V DC, changes in zero point and span shall not exceed ±0.001%URL/V
Mounting Position Influence	Transmitter installation may cause zero error, this error can be corrected by zero adjustment, with no effect on accuracy
Vibration Influence	Tested according to GB/T18271.3/IEC61298-3 test, < 0.1%
Output Signal	4mA~20mADC+HART Modbus-RTU/RS485
Protection Grade	IP67 (measuring probe: IP68)

Range

Pressure Type	Nominal Range	Minimum Range	Lower Range Limit (LRL)	Upper Range Limit (URL)	Overload
G/N	20kPa	4kPa	-20kPa	20kPa	1.5 times the nominal range
35kPa	7kPa	-35kPa	35kPa	1.5 times the nominal range
80kPa	16kPa	-80kPa	80kPa	1.5 times the nominal range
150kPa	50kPa	-100kPa	150kPa	1.5 times the nominal range
300kPa	60kPa	-100kPa	300kPa	1.5 times the nominal range
700kPa	140kPa	-100kPa	700kPa	1.5 times the nominal range
1.3MPa	260kPa	-0.1MPa	1.3MPa	1.5 times the nominal range
2.5MPa	500kPa	-0.1MPa	2.5MPa	1.5 times the nominal range
4MPa	0.8MPa	-0.1MPa	4MPa	1.5 times the nominal range
10MPa	2MPa	-0.1MPa	10MPa	1.5 times the nominal range
25MPa	5MPa	-0.1MPa	25MPa	1.5 times the nominal range
40MPa	8MPa	-0.1MPa	40MPa	1.5 times the nominal range
60MPa	12MPa	-0.1MPa	60MPa	1.5 times the nominal range
100MPa	20MPa	-0.1MPa	100MPa	1.5 times the nominal range
A	35kPa	7kPa	0kPa	35kPa	105kPa
80kPa	16kPa	0kPa	80kPa	1.5 times the nominal range
150kPa	50kPa	0kPa	150kPa	1.5 times the nominal range
300kPa	60kPa	0kPa	300kPa	1.5 times the nominal range
700kPa	140kPa	0kPa	700kPa	1.5 times the nominal range
1.3MPa	260kPa	0kPa	1.3MPa	1.5 times the nominal range
2.5MPa	500kPa	0kPa	2.5MPa	1.5 times the nominal range
4MPa	0.8MPa	0kPa	4MPa	1.5 times the nominal range
10MPa	2MPa	0kPa	10MPa	1.5 times the nominal range
High and low limit setting requirements: lower range value (LRV) and upper range value (URV) must be set within the lower and upper range limits, ｜URV-LRV｜≥ Minimum Range

Accuracy

Linear Output Accuracy	G/N	TD<=5	±0.2% Span
Based on standards and reference test conditions, including best fit straight line (BFSL), hysteresis, repeatability. Calibration temperature :20 degrees C ±5 degrees C.
±0.1% Span	≥800kPa
A	TD<=5	±0.2% Span	<=35kPa
±0.1% Span	≥800kPa
Note: TD (Turn down) means turndown ratio , TD= maximum range / current range

Ambient Temperature Influence

Pressure Type	Influencing Quantity	Range
G/N/A	± (0.1+0.05TD) % 20 degrees C of Span	<=35kPa
± (0.1+0.02TD) % 20 degrees C of Span	≥80kPa

Environmental Conditions

Hazardous Area	PCEC	Certificate No.: CE20.2148X Certificate No.: CE23.0612X Ex ia IIC T6 Ga Ex db IIC T6 Gb Ex tb IIIC T80 degrees C Db
Item	Condition
Operating Ambient Temperature Range	-40 degrees C ~85 degrees C, LCD display: -20 degrees C ~70 degrees C
Storage Ambient Temperature Range	-40 degrees C ~100 degrees C, LCD display: -40 degrees C ~85 degrees C
Measured Medium Temperature Range	Silicone oil filling: -40 degrees C ~ 85 degrees C
Operating Ambient Humidity Range	5%RH~100%RH@40 degrees C

Time Specifications

Total damping time constant: equals the sum of the electronic circuit component damping time constant and sensor capsule damping time constant

Electronic circuit component damping time: 0s~99s adjustable range

Overall response time: <= 90ms

Electromagnetic Compatibility Environment (current signal only)

No.	Test Item	Basic Standard	Test Condition	Performance Level
1	Radiated Disturbance (Enclosure)	GB/T 9254.1/CISPR22	30MHz-1000MHz	B (Note 2)
2	Conducted Disturbance (DC Power Port)	GB/T 9254.1/CISPR22	0.15MHz-30MHz	B (Note 2)
3	Electrostatic Discharge (ESD) Immunity	GB/T 17626.2/IEC61000-4-2	4kV (contact), 8kV (air)	A (Note 1)
4	RF Electromagnetic Field Immunity	GB/T 17626.3/IEC61000-4-3	10V/m (80MHz-1GHz)	A (Note 1)
5	Power Frequency Magnetic Field Immunity	GB/T 17626.8/IEC61000-4-8	30A/m	A (Note 1)
6	Electrical Fast Transient/Burst Immunity	GB/T 17626.4/IEC61000-4-4	2kV (5/50ns, 100kHz)	A (Note 1)
7	Surge Immunity	GB/T 17626.5/IEC61000-4-5	4kV (line-to-line) 2kV (line-to-ground)	A (Note 1)
8	Conducted Disturbance Immunity Induced by RF Fields	GB/T 17626.6/IEC61000-4-6	3V (150kHz-80MHz)	A (Note 1)
Note 1: For performance level A, performance remains normal within the technical specification limits Note 2: For performance level B, function or performance may temporarily decrease or be lost, but can recover automatically, actual operating status, storage and data remain unchanged

Power Supply and Load Conditions

Item	Operating Condition
Power Supply Voltage	HART communication protocol: 16.5V~36V DC
Intrinsically safe version: HART communication protocol: 18.5V~28V DC
Modbus-RTU/RS485: 12V~36V DC
Load Resistance	0Ω~2119Ω during operation 250Ω~600Ω for HART communication
Transmission Distance	< 1000m
Power Consumption
4mA~20mA	<= 500mW@24V DC, 20.8mA
Modbus-RTU/RS485	<= 240mW@24V DC, 10mA

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Frequently Asked Questions

Find quick answers about product selection, customization, technical parameters, delivery, and support for ADDA industrial measurement instruments.

What information should I provide before selecting an instrument?

Please provide the measured medium, measuring range, process temperature, process pressure, connection type, output signal, power supply, installation environment, and communication method if remote monitoring is required.

Can ADDA customize instruments for specific applications?

Yes. ADDA can provide customized solutions based on measuring range, process connection, wetted material, display type, communication protocol, installation method, and working environment.

Are your instruments suitable for hazardous areas?

Many ADDA instruments are available with explosion-proof or intrinsically safe configurations. Please confirm the site classification and certification requirements before selection.

What industries are your products used in?

Yes. Our team can help recommend a suitable instrument configuration after reviewing your application conditions, including medium, range, connection, output signal, and installation requirements.

Do you provide technical support for product selection?

Lead time depends on product type, quantity, customization requirements, and certification needs. Standard products usually have a shorter delivery time, while customized models may require additional production time.

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Smart Absolute Pressure Transmitter