MD-270 Wireless Digital Pressure Gauge

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MD-270 Wireless Digital Pressure Gauge

Product ID：ZXQT024

Price: Please inquire PDF Format

Supply Ability:50SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberMD-270

Brand NameSHMINGKONG

Payment TermsTT，PAYPAL，Alibaba.com Pay

MD-270 Wireless Digital Pressure Gauge

Product Introduction
The MD-270 Wireless Digital Pressure Gauge is a battery-powered, low-power wireless digital pressure gauge designed for real-time pressure measurement and remote monitoring. It integrates a laser-welded pressure sensor, MCU-based low-power electronics and wireless communication, allowing field pressure data to be transmitted to a remote cloud platform.
The MD-270 supports optional GPRS, LoRaWAN and NB-IoT communication, with multiple communication protocols including TCP, UDP, MQTT and CoAP. Users can remotely configure parameters such as transmission interval, sampling frequency and high/low pressure alarm values.
Featuring a large four-digit LCD with white backlight, 304 stainless-steel process connection, cast-aluminum housing, IP67 protection and Ex ib IIB T4 intrinsic safety certification, the MD-270 is suitable for unattended pressure monitoring in demanding industrial environments.

Key Features
• Multiple wireless options: GPRS, LoRaWAN and NB-IoT available.
• Multiple communication protocols: Supports TCP, UDP, MQTT and CoAP.
• Real-time pressure display: Four-digit LCD with white backlight.
• Remote cloud transmission: Uploads field pressure data for centralized monitoring.
• Adjustable transmission interval: User-configurable from 1 minute to 24 hours.
• Dual alarm reporting: Supports scheduled reports and event-triggered reports for timely alarm notification.
• Remote parameter configuration: Transmission frequency, sampling frequency and alarm thresholds can be configured remotely.
• Low-power design: Powered by a replaceable 3.6 V lithium battery, supporting more than 12,000 transmissions.
• Explosion-proof construction: Cast-aluminum housing with Ex ib IIB T4 certification.
• IP67 protection: Suitable for outdoor and harsh operating environments.
• High measurement stability: Laser-welded pressure sensor provides accurate and stable measurement.
• Flexible power supply: 3.6 V lithium battery, with optional 220 V or 12 V power supply.
• Wide pressure range: Available from vacuum and micro-pressure ranges to pressures up to 100 MPa.
• CE certified: Suitable for industrial monitoring applications.

Working Principle
The MD-270 uses an integrated laser-welded pressure sensor to convert the pressure of the measured medium into an electrical signal. The built-in MCU processes the sensor signal, calculates the pressure value and displays it on the LCD in real time.
At the same time, the wireless communication module transmits pressure data to a remote monitoring or cloud platform according to the preset transmission interval. When the measured pressure exceeds a preset high- or low-pressure alarm threshold, the instrument can generate an event report and transmit the alarm information.
The system supports both scheduled data transmission and event-triggered transmission. Sampling frequency, transmission interval, alarm values, IP address and communication port can be configured according to application requirements.

Technical Specifications

Parameter	Specification
Model	MD-270
Product Type	Wireless Digital Pressure Gauge
Pressure Sensor	Laser-welded pressure sensor
Accuracy Class	0.5 / 1.0
Display	4-digit LCD
Backlight	White
Pressure Units/Ranges	Vacuum, compound, micro-pressure and conventional pressure ranges
Maximum Conventional Range	Up to 0–100 MPa
Process Connection	M20 × 1.5; G1/2; G1/4 and other standard threads
Power Supply	3.6 V replaceable lithium battery
Optional Power Supply	12 V / 220 V
Wireless Communication	GPRS / LoRaWAN / NB-IoT
Communication Protocols	TCP / UDP / MQTT / CoAP
Transmission Interval	1 min–24 h, adjustable
Pressure Alarm	High/low alarm values adjustable
Sampling Frequency	Adjustable
Data Transmission	Scheduled + event-triggered
Display Functions	Power on/off, zeroing, transmission status, communication signal strength
Remote Configuration	Transmission interval, sampling frequency, alarm values, IP and port
Measured Media	Water, oil, gas and other media non-corrosive to stainless steel
Operating Temperature	-20–60°C
Storage Temperature	-40–85°C
Relative Humidity	<85% RH
Protection Rating	IP67
Explosion-Proof Rating	Ex ib IIB T4
Certification	CE

Pressure Range Options

Range Type	Available Range
Vacuum	0 to -100 kPa
Compound Pressure	-0.1–0.1 MPa; -0.1–0.25 MPa; -0.1–0.4 MPa; -0.1–0.6 MPa; -0.1–1.0 MPa; -0.1–2.5 MPa
Low Compound Pressure	-5–5 kPa; -10–10 kPa; -25–25 kPa; -50–50 kPa
Micro Pressure	0–5 kPa; 0–10 kPa; 0–25 kPa; 0–50 kPa; 0–100 kPa
Conventional Pressure	0–160 kPa; 0–250 kPa; 0–400 kPa; 0–600 kPa; 0–1 MPa; 0–1.6 MPa … up to 0–100 MPa

The pressure range can be selected according to the actual operating pressure and application requirements.

Applications
The MD-270 wireless digital pressure gauge is particularly suitable for unattended and remote pressure monitoring in:
• Fire water supply networks
• Fire protection terminal systems
• Fire pump rooms
• Municipal water supply networks
• Industrial water systems
• Petroleum and petrochemical facilities
• Oil and gas pressure monitoring
• Industrial process pipelines
• Remote pipeline monitoring
• Smart city infrastructure
• Unattended industrial facilities
Its wireless transmission capability makes it especially useful where conventional wired pressure monitoring is difficult or costly to install.

MD-270 vs. Conventional Digital Pressure Gauges

Feature	MD-270 Wireless Digital Pressure Gauge	Conventional Digital Pressure Gauge
Pressure Display	4-digit LCD	Digital display
Wireless Communication	GPRS / LoRaWAN / NB-IoT	Usually unavailable
Remote Monitoring	Supported	Usually unavailable
Cloud Data Transmission	Supported	Usually unavailable
Scheduled Reporting	Supported	Not available
Event Alarm Reporting	Supported	Limited
Remote Configuration	Supported	Usually unavailable
Transmission Interval	1 min–24 h adjustable	N/A
Power	Replaceable lithium battery	Battery or external power
Protection	IP67	Model dependent
Explosion Protection	Ex ib IIB T4	Model dependent
Typical Application	Unattended IoT pressure monitoring	Local pressure indication

Frequently Asked Questions (FAQ)
1. What is the MD-270 Wireless Digital Pressure Gauge used for?
The MD-270 is designed for real-time pressure measurement and remote wireless monitoring of pipelines, water systems, industrial equipment and other pressure applications.
2. Which wireless communication methods are available?
The MD-270 can be configured with GPRS, LoRaWAN or NB-IoT, depending on the communication requirements of the installation.
3. Can the MD-270 transmit pressure data to a cloud platform?
Yes. The instrument supports wireless transmission of field pressure data to remote monitoring or cloud systems.
4. What communication protocols are supported?
The MD-270 supports TCP, UDP, MQTT and CoAP, providing flexibility for integration with different IoT platforms.
5. How often can pressure data be uploaded?
The transmission interval can be adjusted from 1 minute to 24 hours. The instrument also supports event-triggered transmission when pressure alarm conditions occur.
6. Can the high- and low-pressure alarm values be configured?
Yes. High- and low-pressure alarm thresholds can be adjusted, and alarm events can be transmitted as event reports.
7. How is the wireless pressure gauge powered?
The standard configuration uses a 3.6 V replaceable lithium battery. Optional 12 V or 220 V power supplies are also available.
8. Is the MD-270 suitable for outdoor installation?
Yes. The instrument has an IP67 protection rating, operating temperature of -20–60°C and storage temperature of -40–85°C, making it suitable for demanding outdoor environments.
9. Is the MD-270 explosion-proof?
Yes. The specified explosion-proof rating is Ex ib IIB T4, making it suitable for applicable hazardous-area pressure monitoring applications. The installation must comply with the relevant explosion-proof certification and site requirements.

Frequently Asked Questions (FAQ)
1. What is the MD-270 Wireless Digital Pressure Gauge used for?
The MD-270 is designed for real-time pressure measurement and remote wireless monitoring of pipelines, water systems, industrial equipment and other pressure applications.
2. Which wireless communication methods are available?
The MD-270 can be configured with GPRS, LoRaWAN or NB-IoT, depending on the communication requirements of the installation.
3. Can the MD-270 transmit pressure data to a cloud platform?
Yes. The instrument supports wireless transmission of field pressure data to remote monitoring or cloud systems.
4. What communication protocols are supported?
The MD-270 supports TCP, UDP, MQTT and CoAP, providing flexibility for integration with different IoT platforms.
5. How often can pressure data be uploaded?
The transmission interval can be adjusted from 1 minute to 24 hours. The instrument also supports event-triggered transmission when pressure alarm conditions occur.
6. Can the high- and low-pressure alarm values be configured?
Yes. High- and low-pressure alarm thresholds can be adjusted, and alarm events can be transmitted as event reports.
7. How is the wireless pressure gauge powered?
The standard configuration uses a 3.6 V replaceable lithium battery. Optional 12 V or 220 V power supplies are also available.
8. Is the MD-270 suitable for outdoor installation?
Yes. The instrument has an IP67 protection rating, operating temperature of -20–60°C and storage temperature of -40–85°C, making it suitable for demanding outdoor environments.
9. Is the MD-270 explosion-proof?
Yes. The specified explosion-proof rating is Ex ib IIB T4, making it suitable for applicable hazardous-area pressure monitoring applications. The installation must comply with the relevant explosion-proof certification and site requirements.