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.
Specifications
Model: GPT-1000 (General Pressure Transmitter)
Field | Details |
|---|---|
Device Type | General Pressure Transmitter |
Model | GPT-1000 |
Sensor Technology | Diffusion silicon |
Range | -0.1–100 MPa |
Accuracy | 0.5% / 0.25% |
Outputs | 4–20 mA · RS485 · 0–10 V |
Key Features | High stability · Shock-resistant · SS304/316 |
Protection | IP65 · Ex ia IIB T6 |
Model: GPT-1000D (With Display)
Field | Details |
|---|---|
Device Type | General Pressure Transmitter w/ Display |
Model | GPT-1000 |
Sensor Technology | Diffusion silicon |
Range | -0.1–100 MPa |
Accuracy | 0.5% / 0.25% |
Outputs | 4–20 mA · RS485 · HART |
Key Features | LCD/LED display · Flange options · Multi-connection |
Protection | IP65 · Explosion-proof |
Model: GPT-1000DMS (Smart Mono)
Field | Details |
|---|---|
Device Type | Smart Monocrystalline Pressure Transmitter |
Model | GPT-1000DMS |
Sensor Technology | Monocrystalline silicon |
Range | Differential: 0–0.125 kPa → 7 MPa · Gauge: 0–42 MPa |
Accuracy | 0.075% F.S |
Outputs | 4–20 mA + HART · RS485 |
Key Features | 100:1 turndown · Damping 0–30 s · Self-diagnostic · Multi-unit LCD |
Protection | Explosion-proof · Waterproof |
Model: GPG-1000HV (Digital Gauge)
Field | Details |
|---|---|
Device Type | High-Precision Digital Pressure Gauge |
Model | GPG-1000HV |
Sensor Technology | High-precision digital pressure module |
Range | -0.1–60 MPa |
Accuracy | 0.5% / 0.25% |
Outputs | Digital display · Voltage/Current measurement |
Key Features | Portable · Calibration tool · Multi-sensor support · Alarms |
Protection | Silicone-protected housing · Rugged design |
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.