- For gaseous and liquid pressure media that are not highly viscous or crystallizing
- Liquid-filled type available to avoid hard observation from pointer vibration
- Ideal for food and beverage, or other process engineering industries
Pressure Instruments
SJ Gauge specializes in a wide range of professional pressure measurement instruments, including digital pressure gauges, differential pressure gauges, stainless steel mechanical gauges, and pressure transmitters. Our products are manufactured under strict quality control standards and are designed to meet diverse industrial and scientific applications. With a comprehensive product portfolio and reliable after-sales service, we ensure long-term performance and peace of mind for our customers.
We offer flexible customization services tailored to your specific requirements. From pressure gauges to transmitters, each product can be engineered to match your exact application needs. Whether for large-scale industrial procurement or low-volume customized orders without minimum quantity limitations, SJ Gauge provides fast response and efficient solutions. We understand the complexity of different operating environments and are committed to transforming your requirements into precise and reliable measurement solutions. For any customization inquiries, please feel free to contact us.
Pressure Instruments FAQ
Selection questions for pressure gauges, transmitters, switches, diaphragm seals, and pressure accessories.
How should I choose between a pressure gauge, pressure transmitter, and pressure switch?
Use a pressure gauge when local visual indication is enough, a pressure transmitter when the pressure signal must be sent to a PLC or monitoring system, and a pressure switch when equipment must start, stop, or trigger an alarm at a preset pressure. Many systems combine more than one instrument for local reading, remote monitoring, and control protection.
When is a diaphragm seal needed for pressure instruments?
A diaphragm seal is recommended when the process media is corrosive, viscous, high-temperature, crystallizing, contaminated, or sanitary. It isolates the measuring instrument from direct media contact and helps extend instrument life in chemical, food, pharmaceutical, semiconductor, petrochemical, and wastewater applications.
Which accessories help protect pressure instruments?
Siphon tubes reduce heat from steam service, snubbers damp pressure pulsation, overpressure protectors help prevent overload damage, and manifolds or gauge cocks allow isolation, venting, and maintenance. Accessory selection depends on temperature, vibration, pressure spikes, and maintenance requirements.
Can SJ Gauge customize pressure instruments?
Yes. SJ Gauge can customize pressure range, connection type, wetted material, mounting direction, electrical output, alarm contact, dial size, diaphragm seal, capillary, and accessory combinations based on the application environment.
Showing 65–80 of 91 results
Model: PRSSStainless Steel Pressure Gauge, Stainless Steel
Model: PRHPStainless Steel Pressure Gauge, Ultra High Pressure
- Suitable for high-pressure liquids, for instance: water, hydraulic oil, etc.
- Typically found with equipment for water jet cutting, extremely high-pressure cleaning and bench testing (e.g. for hydraulic components)
Model: PRSFStainless Steel Pressure Gauge with Solid Baffle Wall, Safety
- A solid baffle wall between the measuring system and front dial to protect the operator
- When experiencing failure, the case is equipped with a blow-out back to eject dangerous media out the back of the case safely
Model: PRPCStainless Steel Pressure Gauge with Phenolic Case, Process Industry
- The phenolic case is resistant to heat and high acid and also provides good insulation
- Solid barrier on the front and pressure relief system on the back for safer measuring
Model: PRSTStainless Steel Pressure Gauge, High Temperature / Boiler
- Copper alloy or 304 stainless steel wetted parts for high-temperature service
- Large dial design for remote reading in plants and industrial equipment
- Commonly used as a boiler pressure gauge or steam pressure gauge
Model: PRMLow Pressure Gauge, Iron case
Model: PRSMLow Pressure Gauge with Stainless Steel Case
Model: PRSSM.TULow Pressure Gauge, Stainless Steel
- Can only be used to measure the pressure of non-liquid media
- For gaseous, dry and aggressive media, as well as adverse environments
- The liquid-filled case design is suitable for highly dynamic pressure loads and vibrations
Model: PRSSM-LDLow Pressure Gauge, Diaphragm
- Ideal for low-range pressure measurement in harsh, viscous, or crystallizing applications.
- Pressure connections include threaded and flange mounting options, or electric contacts
- Suitable for applications in the chemical, petrochemical, oil and gas industries as well as power engineering
Model: PRIGeneral Industrial Pressure Gauge, Black Steel Case
- Compact 1.5″, 2″ and 2.5″ dial sizes
- Bottom or center-back mounting, with flange and U-clamp options
- Pressure ranges from 0 … 1 bar to 0 … 400 bar, plus vacuum and compound ranges
- Black zinc-plated steel case with copper-alloy wetted parts
Model: VMEPT1020General Industrial Pressure Transmitter
- Measuring ranges from 50 mbar to 600 bar
- Accuracy: ±0.2% FSO (Min.), ±0.25% FSO (Typ.)
- Calibrated and temperature compensated
Model: VMEPT1020-TPressure Transmitter for High Temperature Application
- Medium temperature: 0 to 200°C
- Measuring ranges from 100mbar to 400bar
- Accuracy: 0.5% FS(Typ.)
Model: VMEPT1120-WFlush Diaphragm Pressure Transmitter
- Superb stainless steel welding technology and surface treatment process
- Strong safeguard with high static pressure and high overload
- The HART manual controller or the HART software can realize measurement information configuration remotely
Model: VMEPT1120-CFlush Diaphragm Pressure Transmitter- Hygienical Application
- Hygienical application
- Stainless steel flush diaphragm
- Measuring ranges from 100mbar to 25bar
Model: VMEPT1130Pressure Transmitter for Aggressive Media
- Ceramic pressure sensor
- PVDF/PTFE pressure interface
- Measuring ranges from 200mbar to 50bar
Model: VMWL-PWireless Pressure transmitter
- Supports WSN and GPRS, suitable for petroleum, mining, and automation
- Range 100 mbar–1000 bar, LCD display, high accuracy, low power
- Long battery life with anti-vibration and moisture-proof design for reliable monitoring