Benchtop/Handheld
Networked
USB
Height Adjustable Leg/Column
Lifting Column Accessories
Synchronized Control Box
Touch Control Panel
Sino Instruments is a leading manufacturer and supplier of industrial measurement and calibration instruments, specializing in pressure, temperature, flow, and process control solutions. The company provides high-precision products designed for industries such as power, oil & gas, chemical, and manufacturing.
With a strong focus on quality, reliability, and innovation, Sino Instruments offers a wide range of products including pressure calibrators, temperature calibrators, flow meters, and automation instruments. Their solutions are widely used for accurate measurement, testing, and industrial process optimization. HUAXIN Instrument (Beijing) Co., Ltd. ensures international quality standards with certifications like ISO and CE, delivering dependable performance and global support.
HS108 High Accuracy Digital Pressure Gauge
Key Features
- Ultra-high accuracy up to ±0.025% FS
- Wide pressure range from vacuum to 2500 bar
- 6-digit LCD display with adjustable backlight
- Maximum and minimum pressure monitoring
- Overpressure warning for enhanced safety
- Stores calibration records for up to 30 instruments
- Automatic power-off for energy saving
- Temperature compensation for stable readings
- RS232 communication interface for data transfer
- Durable ABS housing with stainless steel connector
Technical Specifications
- Pressure Range: (-1~0) bar, (0~2500) bar
- Accuracy: ±0.025% FS, ±0.05% FS, ±0.1% FS
- Operating Temperature: -10°C to 50°C
- Power Supply: 7.4V rechargeable lithium battery / adapter
- Display: 6-digit LCD with backlight
- Pressure Units: kPa, Pa, psi, bar, mbar, mmH₂O, mmHg, MPa
- Communication: RS232
- Protection: 120% full scale
- Weight: 0.75 kg
Applications
Ideal for high-pressure calibration, hydraulic systems, industrial testing, process control, and precision pressure monitoring in critical environments.
HS602 Intelligent Pressure Calibrator – High Accuracy Digital Pressure Calibration Device 2500 Bar
Key Features
- Ultra-high accuracy up to ±0.025% FS
- Wide pressure range from vacuum to 2500 bar
- Integrated pressure, current, and voltage measurement
- HART communication for advanced calibration tasks
- Pressure switch testing capability
- Zero and full-scale calibration function
- Overpressure warning with max/min monitoring
- Data storage for up to 30 calibration records
- RS232 communication for PC connectivity
- Compact, lightweight, and portable design
- Durable ABS housing with stainless steel connector
Electrical Measurement
- Current Measurement: 0–25 mA
- Voltage Measurement: 0–25 V
- DC Output: 24V (≤30mA)
Technical Specifications
- Accuracy: ±0.025% FS, ±0.05% FS
- Operating Temperature: -10°C to 50°C
- Display: 5–6 digit LCD with backlight
- Battery: 7.4V rechargeable lithium battery (80 hours backup)
- Pressure Units: kPa, Pa, psi, bar, mbar, mmH₂O, mmHg, MPa
- Communication: RS232
- Overpressure Protection: 120% full scale
- Connections: M20×1.5 male, 1/4” NPT
- Weight: 0.75 kg
Applications
Perfect for calibration of pressure transmitters, gauges, and sensors in industries such as oil & gas, power plants, manufacturing, calibration labs, and process automation systems.
HS700 Pneumatic Pressure Comparator – High Precision Air Pressure Calibration Pump
Key Features
- High precision pneumatic pressure generation
- Dual pressure ports for reference and test instruments
- Fine pressure adjustment for accurate calibration
- Leak-proof design for stable performance
- Compact and portable structure
- Easy operation with manual pressure control
- Durable construction for industrial use
Technical Highlights
- Pressure Medium: Air
- Pressure Ports: Dual output ports
- Application: Pressure gauge and transmitter calibration
- Design: Portable and rugged body
- Operation: Manual pressure generation and control
Applications
Ideal for calibration of pressure gauges, pressure transmitters, sensors, and industrial measurement devices in laboratories, oil & gas industries, manufacturing plants, and process control systems.
HS705 / HS705A Hydraulic Pressure Comparator Pump (Up to 700 Bar Calibration System)
Key Features
- High pressure generation up to 600 bar (HS705) / 700 bar (HS705A)
- Compact and portable design for field and lab use
- Fast pressure build-up for efficient calibration
- Precision fine adjustment valve for accurate control
- Durable stainless steel and aluminum construction
- Leak-proof sealing with Buna-N O-rings
- Quick connection ports (M20×1.5) for easy setup
Technical Specifications
- Model: HS705 / HS705A
- Pressure Range: 0–600 bar (HS705), 0–700 bar (HS705A)
- Working Medium:
- HS705: Transformer oil
- HS705A: Distilled / purified water
- Minimum Adjustment: 1 mbar
- Pressure Connection: M20×1.5 Female
- Dimensions: 210 × 210 × 140 mm
- Weight: 2.6 kg
- Material: Stainless steel & anti-rust aluminum
Applications
- Calibration of pressure gauges and transmitters
- Testing of pressure switches and instruments
- Used in oil & gas, power plants, chemical industries, metallurgy
- Suitable for laboratory and on-site calibration tasks
Key Functional Components
- Hand Pump: Generates initial pressure efficiently
- Lead Screw Pump: Enables rapid pressure increase/decrease
- Fine Adjustment Valve: Precise pressure tuning
- Pressure Ports: Dual ports for reference and test gauges
- Relief Valve: Safe pressure release
- Oil & Water Cup: Supports different working media
- Air Vent Nut: Prevents air lock during operation
Package Includes
- 1 × HS705 / HS705A Hydraulic Comparator
- 10 × O-Rings
- Test Report
- User Manual
- Aurilave
Why Choose HS705 Series?
The HS705 series stands out as a high-pressure, reliable, and portable calibration solution. With its fast pressure generation and precision control, it is an ideal choice for professionals requiring accurate hydraulic pressure calibration up to 700 bar.
HS706 Ultra High Pressure Hydraulic Comparator Pump (Up to 2500 Bar Calibration System)
Key Features
- Ultra-high pressure generation up to 1600 / 2500 bar
- Compact and portable design for field and lab calibration
- High safety factor for secure operation
- Precision fine adjustment for accurate pressure control
- Transparent oil cup for easy monitoring and maintenance
- Leak-proof design with excellent sealing performance
- Durable stainless steel and aluminum body
Technical Specifications
- Pressure Range: 0–1600 bar / 0–2500 bar
- Minimum Adjustable Pressure: 10 mbar
- Working Medium: Transformer Oil (25#)
- Material: Stainless steel & anti-rust aluminum
- Design: Portable hydraulic comparator system
Applications
- Calibration of high-pressure gauges
- Testing of pressure transmitters and sensors
- Industrial use in oil & gas, power plants, heavy industries
- Suitable for laboratory and on-site calibration
Key Functional Components
- Hand Pump: Generates initial pressure quickly
- Lead Screw Pump: Enables fine and rapid pressure adjustment
- Fine Adjustment Valve: Ensures precise calibration control
- Pressure Ports: Dual ports for testing and reference gauges
- Relief Valve: Safe pressure release mechanism
- Transparent Oil Cup: Easy monitoring of working medium
Package Includes
- 1 × HS706 Hydraulic Comparator
- O-Rings Set
- Test Report
- User Manual
Why Choose HS706 Comparator?
The HS706 is engineered for extreme pressure calibration requirements, offering accuracy, durability, and safety. Its ultra-high pressure capability makes it the perfect solution for professionals handling critical calibration tasks in high-pressure systems.
HS720 High-Precision Pneumatic Pressure Comparator Pump (Vacuum to 140 Bar Calibration System)
Key Features
- Precision shut-off valve for stable pressure calibration
- Built-in air-oil separator for clean and maintenance-free operation
- High-efficiency hand pump for fast pressure generation
- Military-grade sealing technology for leak-proof performance
- Fine adjustment valve for precise pressure control
- Portable and rugged design for field and lab use
- Wide pressure range: Vacuum to 140 bar
Technical Specifications
- Pressure Range: -0.95 to 140 bar
- Minimum Adjustment: 0.1 mbar
- Working Medium: Air
- Pressure Connection: M20×1.5 Female
- Dimensions: 380 × 198 × 140 mm
- Weight: 6.5 kg
- Material: Stainless steel & anti-rust aluminum
- Sealing: Buna-N O-rings
Applications
- Calibration of pressure gauges
- Testing of pressure transmitters
- Adjustment of pressure switches
- Industrial use in power plants, oil & gas, chemical, and metallurgy sectors
Package Includes
- 1 × HS720 Pneumatic Comparator
- 10 × O-Rings
- Test Report
- User Manual
Key Functional Components
- Hand Pump: Generates pre-pressure efficiently
- Reverse Valve: Switch between pressure & vacuum
- Dual Pressure Ports: For reference & test instruments
- Fine Adjustment Valve: Precision pressure tuning
- Relief Valve: Safe pressure release
- Shut-off Valve: Stabilizes pressure during calibration
Why Choose HS720 Comparator?
The HS720 stands out as a reliable pressure calibration solution for professionals who require accuracy, durability, and ease of operation. Its portable design and advanced engineering make it a preferred choice for industrial calibration tasks.
HS721 Bench-Mount Pneumatic Pressure Comparator (Vacuum to 60 Bar Calibration System)
Key Features
- Bench-mounted design for stable laboratory calibration
- High precision pressure adjustment with 0.1 mbar accuracy
- Wide pressure range: -0.95 to 60 bar
- Durable construction with stainless steel and aluminum body
- Advanced sealing technology for leak-proof performance
- Supports simultaneous calibration of multiple gauges
- Easy operation with hand pump and fine adjustment system
Technical Specifications
- Pressure Range: -0.95 to 60 bar
- Adjustment Accuracy: 0.1 mbar (10 Pa)
- Working Medium: Air
- Pressure Connection: M20×1.5 Female
- Dimensions: 380 × 380 × 200 mm
- Weight: 14.8 kg
- Material: Stainless steel & aluminum
- Sealing: Buna-N O-rings
Applications
- Calibration of pressure transmitters
- Testing of precision pressure gauges
- Adjustment of pressure switches
- Used in laboratories, power plants, oil & gas, and industrial sectors
Key Functional Components
- Hand Pump: Generates initial pressure efficiently
- Reverse Valve: Switch between pressure and vacuum
- Multiple Pressure Ports: Enables simultaneous testing of gauges
- Fine Adjustment Valve: Provides precise pressure control
- Lead Screw Pump: Allows rapid pressure adjustment
- Relief Valve: Ensures safe pressure release
Package Includes
- 1 × HS721 Pneumatic Comparator
- 10 × O-Rings
- Test Report
- User Manual
Why Choose HS721 Comparator?
The HS721 offers superior accuracy, durability, and stability, making it an excellent choice for professionals who require reliable pressure calibration in lab environments. Its bench-mounted design and multi-port capability improve efficiency and precision during calibration tasks.
HX601 Digital Pressure Gauge
Key Features
- High accuracy up to ±0.05% FS for precise pressure measurement
- Wide pressure range from vacuum to 700 bar (10,000 psi)
- High-resolution 5-digit digital display
- Multiple pressure units: kPa, Pa, psi, bar, mbar, mmH2O, mmHg, MPa
- Built-in temperature compensation for stable readings
- Automatic backlight shut-off for energy efficiency
- Overpressure warning and 120% full-scale protection
- RS232 communication for easy data transfer
Technical Specifications
- Pressure Range: (-1~0) bar, (0~700) bar
- Accuracy: ±0.05% FS, ±0.1% FS, ±0.2% FS, ±0.5% FS
- Types: Gauge, absolute, differential pressure
- Operating Temperature: -10°C to 50°C
- Power Supply: DC 3.6V lithium battery
- Display: 5-digit LCD
- Protection: Overpressure safety
- Weight: 0.5 kg
Applications
Perfect for industrial pressure monitoring, calibration systems, hydraulic systems, and process control applications requiring accurate and stable pressure readings.
Portable Pneumatic Pressure Comparator HS702 HS703 Vacuum to 60 Bar Calibration Pump
Key Features
- Wide pressure range from vacuum up to 60 bar
- High precision fine adjustment valve (0.1 mbar / 10 Pa accuracy)
- Built-in air-oil separator for clean and stable operation
- Dual pressure output ports for simultaneous calibration
- Hand pump + screw spindle pump for effortless pressure control
- Rugged design with anti-rust aluminum and stainless steel body
- Quick connection M20×1.5 ports for easy setup
- Compact and portable design for field and lab use
Technical Specifications
- Models: HS702 & HS703
- Pressure Range:
- HS702: -0.95 to 25 bar
- HS703: -0.95 to 60 bar
- Working Medium: Air
- Accuracy: 0.1 mbar (10 Pa)
- Material: Stainless steel, aluminum body, Buna-N seals
- Connection: M20×1.5 female
- Dimensions: 286 × 198 × 140 mm
- Weight: 2.7 kg
Applications
- Pressure gauge calibration
- Transmitter testing
- Industrial instrumentation calibration
- Laboratory pressure testing
- Oil & gas, power plants, and chemical industries
Why Choose HS702 / HS703?
This pneumatic comparator stands out for its precision, portability, and durability, making it an ideal solution for professionals who require accurate pressure calibration in both controlled and field environments.
