Digital Pressure Gauge with LCD Display

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Product Overview

Our Digital Pressure Gauges replace the traditional Bourdon tube and dial with a precision piezoresistive or capacitive sensor coupled to a high-contrast LCD display, delivering measurement accuracy of up to ±0.25% FS — significantly better than any mechanical gauge. Beyond basic pressure reading, these instruments offer peak/valley memory, selectable engineering units, configurable 4-20mA or RS485 output, and optional relay alarm contacts, making them the intelligent upgrade for laboratory calibration, critical process control, and precision testing applications where analog gauges simply cannot provide the resolution or data connectivity required.

Technical Specification Sheet

Parameter	Detail
Pressure Range	0–0.1 bar up to 0–1000 bar (gauge, absolute, compound)
Accuracy	±0.5% FS (standard) or ±0.25% FS (precision grade)
Display	5-digit backlit LCD, selectable units: bar, psi, kPa, MPa, mH₂O
Output Signal	4-20 mA, RS485 (Modbus RTU), relay alarm (optional)
Power Supply	3.6V lithium battery (standalone) or 8–30 VDC loop power
Wetted Parts Material	Stainless Steel 316L
Protection Rating	IP65 (standard), IP67 (optional)
Operating Temperature	−20°C to +85°C

Key Features

High-accuracy digital measurement with ±0.25% FS precision — up to 6× more accurate than Class 2.5 mechanical gauges.
Multi-function display: real-time pressure, peak hold, valley hold, and configurable zero/span adjustment.
Battery-powered option for portable use; loop-powered mode for permanent panel installation.

Typical Use Cases

Precision Testing & Calibration: Replacing test master gauges in calibration laboratories and mobile calibration kits.
Cleanroom & Pharmaceutical: High-accuracy pressure monitoring with digital output to data acquisition systems.
Oil & Gas: Wellhead and pipeline pressure logging with RS485 connectivity to SCADA systems.
HVAC Commissioning: Precise air and water pressure balancing during system startup.
Industrial Automation: Replacing analog gauges on injection molding and blow molding machines for digital integration.

Competitive Benefits

Superior Accuracy: Eliminates parallax reading errors and subjective interpolation inherent to analog dial gauges.
Data Connectivity: RS485 Modbus RTU output enables integration with PLCs, SCADA, and data loggers without additional transmitters.
Peak Demand Capture: Peak and valley memory records transient pressure events invisible to standard gauges, critical for diagnosing system faults.
Multi-Unit Display: One gauge covers multiple markets — switchable between bar, psi, MPa, and kPa without recalibration.
Tamper-Proof Settings: Password-protected configuration prevents accidental zero adjustment in the field, maintaining measurement integrity.

Payment and Shipping Details

We accept T/T, L/C, and PayPal for international orders of all sizes. Standard shipping terms are FOB Shanghai or CIF destination port. Standard models with battery power are available for dispatch within 5–7 working days. Models with 4-20mA or RS485 output require 10–15 working days for configuration and final calibration. Each unit is supplied with a factory calibration certificate and a calibration data sheet traceable to national standards.

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Digital Pressure Gauge with LCD Display Manufacturers

Wuxi Huihua Special Instrumentation Co., Ltd. was established in December 2001, the registered capital is 5 million yuan, the existing staff of more than 50 small and medium-sized joint-stock enterprises.
The company specialises in the production of various types of special instruments, alternative to the localisation of imported instruments.To seismic pressure gauge, seismic electric contact pressure gauge, stainless steel pressure gauge, diaphragm corrosion-resistant pressure gauge, marine pressure gauge and other series as the main products. On the basis of field instruments, we have developed various kinds of pressure transmitters, pressure controllers, digital pressure gauges and so on. There are more than 30 series and 3000 specifications. Products are widely used in petroleum, chemical, paper, metallurgy, mining, chemical fibre, electric power, food, environmental protection, rubber and plastic, hydraulics and many other industries, and more than 2,000 domestic customers to establish a friendly relationship with the national large and medium-sized enterprises to establish a good partnership, won the majority of users praise, and set up a corporate brand image.