Pressure gauges and transmitters are essential instruments used to measure and monitor pressure in gas, liquid, and steam systems across industrial, municipal, and commercial applications. Accurate pressure measurement is fundamental for system safety, pump protection, hydraulic and pneumatic control, and regulatory compliance.
Modern pressure instruments—ranging from basic stainless-steel transmitters to high-precision monocrystalline silicon sensors and multifunction digital gauges—are designed for stability, reliability, and seamless integration with PLC, SCADA, and IoT platforms. With robust housings, advanced sensor technologies, explosion-proof options, and digital communication protocols, these devices provide continuous, accurate, and real-time pressure data for automation and industrial control.
What is a Pressure Gauge / Pressure Transmitter?
A pressure transmitter converts pressure into an electrical signal (4–20 mA, RS485,
HART).
A pressure gauge displays pressure directly using a digital or mechanical indicator.
It include four categories:
1. General Pressure Transmitters (GPT-1000 / GPT-1000D)
Use diffusion silicon pressure sensors + stainless-steel housings.
Characteristics:
0–100 MPa range
High stability (≤0.1%/year)
Options for gauge, absolute, and sealed pressure
Threaded or flange connections
Output: 4–20 mA, 0–10 V, RS485, HART (GPT-1000D)
Display options (LED/LCD)
2. Smart Monocrystalline Silicon Pressure Transmitter (GPT-1000DMS)
Next-generation industrial transmitter using monocrystalline silicon sensing.
Advanced features:
Ultra-high accuracy: 0.075% F.S.
Range turndown: 100:1
Damping: 0–30 s configurable
Zero/span correction
Multi-pressure-unit selection
HART or RS485 digital output
Explosion-proof & waterproof architecture
High-Precision Digital Pressure Gauge (GPG-1000HV)
Portable, multifunction digital instrument used for:
High-accuracy pressure measurement
Calibration of pressure transmitters
Testing pressure switches
Measuring voltage (±50 V) and current (±25 mA)
Local display (5–6 digit)
Data logging and built-in alarms
Accuracy: 0.05% F.S or 0.02% F.S
Resolution: as low as 0.1 Pa
Together, these devices provide a complete pressure-measurement solution for industrial systems.
Benefits of Pressure Gauges & Transmitters
1. Highly Accurate and Stable Pressure Measurement
Diffusion silicon sensors for general applications
Monocrystalline silicon for high-precision industrial use
Digital gauge with micro-Pa resolution
2. Robust Construction for Industrial Environments
Stainless steel housings
Explosion-proof models
IP65 or higher protection
Vibration and shock resistance
3. Wide Measurement Ranges
Vacuum (-0.1 MPa)
Low differential pressures
High pressures up to 100 MPa
4. Flexible Output and Communication
4–20 mA
0–5 V / 0–10 V
RS485
HART
Relay (digital gauge functions)
5. Broad Medium Compatibility
Measure gases, liquids, steam, oils, refrigerants, chemical media, etc.
6. Intelligent Digital Functions
(GPT-1000DMS & GPG-1000HV)
Smart zero/span calibration
Damping adjustment
Multi-unit pressure display
Data logging and alarms
EEPROM data protection
LCD display in extreme cold (-40°C)
7. Easy Integration
All models interface seamlessly with:
Delta PLC
APS IoT Routers
DCS / SCADA systems
Pressure calibrators (for digital gauge)
Conclusion
Pressure gauges and transmitters are vital components of modern industrial systems, ensuring safe, efficient, and reliable operation across countless applications.
The GPT-1000 and GPT-1000D series offer rugged, stable and cost-effective solutions for general pressure measurement, while the GPT-1000DMS monocrystalline silicon transmitter delivers high-accuracy, intelligent diagnostics, and advanced digital communication for demanding industrial environments.
The GPG-1000HV high-precision digital pressure gauge adds powerful calibration, measurement, and troubleshooting capabilities, making it indispensable for technicians and engineers.
With strong build quality, industrial-grade sensing elements, explosion-proof options, and compatibility with PLC, SCADA, and IoT systems, these pressure instruments form a complete pressure monitoring and control portfolio for APS Technology’s industrial solutions.