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จัดส่งฟรีเมื่อซื้อสินค้าตั้งแต่ 3,000 บาท

ติดต่อสอบถาม     Call: 0-2911-4761-5        Line: @pvnengineering     Email: pvn@pvn.co.th

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Pressure Measurement

Accurate pressure measurement is critical to safety, efficiency, and performance. Explore our complete range of pressure instruments for reliable process monitoring and control.

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Trusted Brands

Quality products

Expert Support

Application guidance

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Nationwide Delivery 

in Thailand

What is Pressure Measurement?

Pressure measurement monitors the pressure of liquids or gases within a system to help maintain safe and reliable operation. Effective pressure monitoring also supports consistent product quality and helps identify abnormal pressure changes or leaks.

Leak Detection

Helps identify leaks and unexpected changes in system pressure.

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Product Quality

Supports consistent process conditions and product quality.

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Reliable Operation

Helps keep processes operating within the required pressure range.

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Process Safety

Helps identify potentially unsafe pressure conditions.

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Gauges, sensors, transmitters and switches for measuring vacuum and pressures below atmospheric pressure.

Vacuum Instruments

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Instruments for measuring low pressure and differential pressure, including liquid-column and digital types.

Manometers

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Instruments that generate and regulate pressure at a selected setpoint for testing or process control.

Pressure Controllers

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Reference instruments and calibration equipment for testing and verifying pressure gauges, sensors and transmitters.

Pressure Calibrators

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Diaphragm seals, manifolds, valves, snubbers, fittings and other components for pressure instrument installation and protection.

Pressure Accessories

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Analog and digital gauges for local pressure indication and monitoring.

Pressure Gauges

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Industrial instruments for continuous pressure measurement and transmission to control or monitoring systems.

Pressure Transmitters

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Compact pressure sensing devices for OEM equipment, machines, test systems and electronic measurement applications.

Pressure Sensors & Transducers

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Gauges, transmitters and switches for measuring the pressure difference between two points.

Differential Pressure

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Mechanical and electronic switches for pressure alarm, control and safety functions.

Pressure Switches

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Browse Pressure Products

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Connection Size and Location

Ensure the thread type, size, and mounting position perfectly match your existing pipe infrastructure.

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Accuracy Requirements

Pick a high-precision grade for laboratory calibration or  a standard industrial grade for general piping.

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Environmental Conditions

Account for surrounding vibration and extreme temperatures by choosing liquid-filled casings or specialized seals.

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Measurement Type

Choose between gauge, absolute, or differential pressure based on whether you are measuring standard lines, vacuums, or filters

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Process Media

Match the instrument's internal wetted parts to your fluid to prevent chemical corrosion and breakdown.

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Pressure Range and Scale

Select a scale where your normal operating pressure sits comfortably between 50% and 75% of the maximum limit.

Selecting the right intstrument depends on your process conditions and measurement requirements.

Choosing the Right Pressure Instrument

Pressure Measurement by Application

Pressure instruments are used across industrial processes to monitor operating conditions, protect equipment, and maintain process performance.

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Filter Monitoring

Measure differential pressure across filters to identify loading, blockage, or the need for maintenance.

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Pump Monitoring

Monitor suction and discharge pressure to help evaluate pump performance and detect abnormal operating conditions.

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Tank & Process Pressure

Measure pressure in tanks,

vessels, and process lines for continuous monitoring and control.

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HVAC & Cleanroom Monitoring

Measure low and differential pressure in air handling systems, ducts, filters, and controlled environments.

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Hydraulic & Pnuematic Systems

Monitor system pressure to support equipment performance, control, and protection.

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Hygiennic & Sanitary Processes

Monitor pressure in sanitary process to maintain stable process conditions and support safe, hygienic operation.

Industries We Serve

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Oil & Gas

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Chemical

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Pharmaceutical

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Food & Beverage

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Water & Wastewater

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HVAC & Building

Brands You Can Trust

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Frequently Asked Questions

What is the difference between pressure gauge and differential pressure gauge?

How do I choose the right pressure range?

What is the difference between a pressure gauge and a pressure transmitter?

What are common pressure units used?

How often should pressure instruments be calibrated?

Can pressure instruments be used with corrosive media?

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Not sure which pressure instrument you need?

Our team are here to help you select the right solution for your application.

☏ TALK TO OUR SALES🗎 REQUEST A QUOTE
PVN Pressure

RChg / RChgG 40

Crimped-on ring case stainless steel
without or with case filling
case / process connection welded
nominal size : 40 (1½")

PVN Pressure

RCh / RCh(G) 63

Bayonet ring case stainless steel
without or with case filling
nominal size: 63 (2½")

PVN Pressure

RCh/ RCh(G)-100, 160, 250

Bayonet ring case tainless steel without or with case filling nominal size: 100 (4"), 160 (6"), 250 (10")

PVN Pressure

2000 SERIES

Range : -0.05 to 0.2 in w.c. (-10 to 50 Pa) up to 0 to 30 psi (0 to 30 kPa) Service : Air and non-combustible, compatible gases

PVN Pressure

DM-1000

Range : 0.25 to 100 in w.c. (60 Pa to 24.88 kPa) (Bi-directional ranges available) Service : Air and non-combustible, Compatible gases

PVN Pressure

2-5000

Ranges : 0.5 in w.c. to 5 psi (125 Pa to 3 kPa) Service : Air and compatible gases.

PVN Pressure

4000

Ranges : 0 to 5 in w.c. up to 0 to 20 psid. Service : Air and compatible gases and oil based liquids.

PVN Pressure

PTGD

Ranges : 5 to 150 psid (0.25 to 10 bar). Service : Compatible gases and luquids.

PVN Pressure

PFG2

Ranges : 5 to 25 psid. Service : Luquids/gases compatible with SS , GFN, and fluoropolymer

PVN Pressure

DHII

Pressure gaues+Switches. Ranges : 0.25 too 100 in w.c. (60Pa to 24.88 kPa) (Bi-directional ranges available). Service : Air and non-combustible, compatible gases. Switch Type : (2) SPDT

PVN Pressure

RChg / RChgG 80

Crimped-on ring case stainless steel without or with case filling nominal size: 80 (3")

PVN Pressure

RChg / RChgG 50

Crimped-on ring case stainless steel without or with case filling nominal size : 50 (2")

PVN Pressure

RCh 63-3vDW / RChG 63-3vDW

Bayonet ring case stainless steel
DW-Line (Double Weld)
without or with case filling
nominal size: 63 (2½")

PVN Pressure

DH

3 in 1 Instrument : Gauge, Switch and Transmitter, Square Root Extractor for Air Flow. Ranges : 0.25 to 100 in w.c. (60Pa to 24 .88 kPa) (Bi-directional ranges avialable) Services : Air and non-combustible, compatible gases.

PVN Pressure

DH3

3 in 1 Instrument: Gage, Switch and Transmitter, Square Root Output for Flow. Ranges : 0.25 to 100 w.c. (60 Pa to 24.88 kPa) (Bi-directional ranges available). Services : Air and non-combustible, compatible gases. Switch Type : (2)SPDT

PVN Pressure

A3000

3-in-1 Indicating Gage, Lo-limit and Hi-limit Control. Ranges : 0 to 0.25 w.c. (0 to 60 Pa) up to 0 to 150 in w.c. (0 to 30 kPa). Services : Air and non-combustible, Compatible gases. Switch Type : (2)DPDT

PVN Pressure

43000

Lo-Limit and Hi-Limit Control, Aluminum or Brass Case Available. Ranges : 0 to 0.5 in w.c. up to 0 to 500 in w.c. Service : Compatible gases and luquids. Switch Types : (2) DPDT

PVN Pressure

3000MR

Combines Differential Pressure Gage with Low/High Set-Points, Compact Size. Ranges : 0 to 0.25 in w.c. (0 to 60 Pa) up to 0 to 100 in w.c. (0 to 4 kPa). Services : Air and non-combustible compatible gases. Switch Types : SPDT

PVN Pressure

3000MRS

Combines Differential Pressure Gage with Low/High Set-Points, Compact Size. Ranges : 0 to 0.25 in w.c. (0 to 60 Pa) up to 0 to 100 in w.c. (0 to 4 kPa). Services : Air and non-combustible compatible gases. Switch Types : Solid state relay

PVN Pressure

MP

Compact, Low Cost Switch/Gage. Ranges : 0 to 0.5 in w.c. (0 to 125 kPa) up to 0 to 20 in w.c. (0 to 3 kPa). Servive : Air and non-combustible, Compatible gases. Switch
Types : (2) SPDT

PVN Pressure

ADPS

Differential Pressure Switch With Dual Scale Field Adjustable Set Point Knob. Set Point Range : .08 to 20 in w.c. (20 to 5000 Pa). Service : Compatible gases. Switch Type : SPDT

PVN Pressure

EDPS

Differential Pressure Switch With Dual Scale Field Adjustable Set Point Knob. Set Point Range : .08 to 20 in w.c. (20 to 5000 Pa). Service : Compatible gases. Switch Type : SPDT

PVN Pressure

1800

Low Differential Pressure Switch for General Industrial Service. Set Point Range 0.07 to 85 in w.c. (0.17 to 21 kPa). Services : Compatible gases. Switch Type : SPDT

PVN Pressure

1900

Compact Low Differential Pressure Switches. Set Point Range : .07 to 20 in w.c. (0.17 to 5 kPa). Service : Compatible gases. Switch Type : SPDT

PVN Pressure

MDS

Miniature Pressure Switch Shock and Vibration Resistant, Lightweight and Compact, Gold Contacts. Set Point Rang : .5 to 50 in w.c. (.12 to 12.5 kPa). Service : Air or compatible fluids on "high side". Switch Type : SPST NO.

PVN Pressure

MDA

Miniature Adjustable Pressure Switch. Set Point Rang : .1 to 100 in w.c. (.25 to 249.1 mbar). Service : Air or compatible fluids on "high side". Switch Type : SPST NO.

PVN Pressure

1831

Low Differential Pressure Switches Manual Reset, No Power Required. Set Point Range : 2.5 to 23 in w.c. (.62 to 5.7 kPa) Service : Compatible gases. Switch Type : DPDT

PVN Pressure

1640

Floating Contact Null Switch for High and Low Actuation / Visual Set Point Adjustment, Adjustable Null Zone. Set Point Range : .01 to 12 in w.c. (.003 to 3 kPa). Service : Compatible gases. Switch Type : SPDT

PVN Pressure

1620

Single and Dual Pressure Switch/High Reliability, Repetitive Accuracy within ±1%. Set Point Range : .15 to 24 in w.c. (.04 to 6 kPa). Service : Compatible gases. Switch Type : (2) SPDT

PVN Pressure

1630

Large Diaphragm Pressure Switches. Set Point Range : .05 to 12 in w.c. (0.12 to 3 kPa). Services : Compatible gases. Switch Type : SPDT

PVN Pressure

PG

Gas Pressure/Differential Pressure Switch /External Adjustment, Visible Dial, Hermetically Sealed Snap or Mercury Switch. Set Point Range : 1 in w.c. to 5 psig(.25 kPa to 3.4 bar) Service : Compatible gases. Switch Type : SPDT or DPDT

PVN Pressure

1950

Explosion-proof Differential Pressure Switch. Set Point Range : .03 to 20 in w.c. (.007 to 5 kPa). Service : Compatible gases. Switch Type : SPTD

PVN Pressure

1950G

Explosion-proof Differential Pressure Switch. Set Point Range : .07 to 20 in w.c. (.017 to 5 kPa). Service : Compatible gases. Switch Type : SPDT.

PVN Pressure

H3

Explosion-Proof Differential Pressure Switches/Explosion-proof, Weatherproof, Compatible with Natural Gases. Set Point Range : 180 in w.c. to 200 psid (0.5 to 13.5 bar). Service : Compatible gases. Switch Type : SPDT or DPDT.

PVN Pressure

DX

Wet Differential Pressure Switch/NEMA 4X Enclosure, Low Differential Set Points. Set Point Range : 2.5 to 7.5 psi (.17 to 5.2 bar). Service : Compatible liquids and gases. Switch Type : SPDT

PVN Pressure

616KD

Differential Pressure Transmitter / One-Touch® Digital Push-Button Calibration Technology, ±0.25, ±1, or ±2% Accuracy. Ranges : 1 to 20 in w.c. (250 to 5000 Pa) to 5000 Pa (Bi-directional available). Output Signal : 4 to 20 mA or field selectable 0 to 10/0 to 5/2 to 10/1 to 5 V

PVN Pressure

668B/D

Compact Differential Pressure Transmitters Ranges : .1 to 100 in w.c. (25 to 25000 Pa)(Bi-directional available) Out put Signal : 4 to 20 mA, 0 to 10VDC, 0 to 5 VDC

PVN Pressure

608

Intrinsically Safe Differential Pressure Transmitter. Ranges : 0.1 to 25 in w.c. (25 to 6200Pa) (Bi-directional available). Output Signal : 4 to 20 mA

PVN Pressure

616W

Differential Pressure Transmitter. Ranges : 6 in w.c. to 2.5 kPa. Output Signal : 4-20 mA (2-wire), 0-5 VDC or 0-10 VDC (3-wire)

PVN Pressure

DM-2000

Differential Pressure Transmitter | Quick Response, Easy Calibration Checks. Ranges : .1 to 5 in w.c. (Bi-directional available). Output Signal : 4-20 mA

PVN Pressure

605

Differential Pressure Indicating Transmitter / Same Size as Standard Magnehelic® Differential Pressure Gage. Ranges : Vacumm, .5 to 50 in w.c. (60 to 1500 Pa). Outout Signal : 4-20 mA

PVN Pressure

MS2

Differential Pressure Transmitter / Monitors Pressure, Air Velocity and Air Flow, BACnet/Modbus® Communications. Ranges : 0.1 in w.c. (25 Pa to 6975 Pa) (Bi-directional available). Output : 4-20 mA(2-Wire), 0-5 VDC, 0-10VDC (3-Wire)

PVN Pressure

ISDP

Intrinsically Safe Differential Pressure Transmitter / For Hazardous Zone Pressure and Flow Applications. Ranges : 0.1-100 in w.c. (Bi-directional available). Output : 4-20 mA DC

PVN Pressure

3100D

Explosion-proof Differential Pressure Transmitter / HART® Communication, Push Button Configuration, Rangeability (100:1). Ranges : 6 in w.c. to 0-1000 psig. Output Signal : 4 to 20 mA/HART® Communication.

PVN Pressure

636D

Fixed Range Differential Pressure Transmitter / Explosion-proof, 0.5% Accuracy. Ranges : 15 to 300 psi. Service : Compatible gases, liquids or vapors. Output Signal : 4 to 20 mA DC or 1-5 VDC.

PVN Pressure

629C

Wet/Wet Differential Pressure Transmitter / 0.5% Accuracy, NEMA 4X (IP66) Enclosure. Ranges : 5 to 500 psid (0.5 to 30 bar). Service : Compatible gases and liquids. Output Signal : 2-wire: 4 to 20 mA; 3-wire : Field selectable 0 to 5, 1 to 5, 0 to 10, or 2 to 10 VDC.

PVN Pressure

629C-3V

Wet/Wet Differential Pressure Transmitter With 3-Way Valves/ 0.5% Accuracy, NEMA 4X (IP66) Enclosure. Ranges : 5 to 500 psid (0.5 to 30 bar). Service : Compatible gases and liquids. Output Signal : 2-wire: 4 to 20 mA; 3-wire : Field selectable 0 to 5, 1 to 5, 0 to 10, or 2 to 10 VDC.

PVN Pressure

629HLP

Differential Pressure Transmitter / High Accuracy, IP65 Enclosure. Ranges : 15 to 60 psi (1 to 6 bar). Service : Compatible gases or liquids. Output Signal : 4 to 20 mA, 0 to 10 VDC.

PVN Pressure

647

Wet/Wet Differential Pressure Transmitter / ±1.0% Accuracy, NEMA 4 (IP56) Enclosure, 2-Wire. Ranges : 1 in w.c. to 0-30 psid (245 Pa to 0-2.0 bar). Service : Compatible gases or liquids on both pressure and reference sides. Output Signal : 4 to 20 mA, 2-wire.

PVN Pressure

645

Wet/Wet Differential Pressure Transmitter / ±0.25% Accuracy, Quick Response, 2-Wire Design. Ranges : 1 to 100 psid (0.07 to 6.5 bar) (Bi-directional ranges available). Service : Compatible gases or liquids on both pressure and reference sides. Output Signal : 4 to 20 mA, 2-wire.

PVN Pressure

WWDP

Differential Pressure Transmitter / Selectable Ranges of Uni-Directional or Bi-Directional, Selectable Outputs. Ranges : 5 to 250 psi. Service : Gases or liquids compatible with 17-4 PH stainless steel. Output Signal : Selectable 0 to 5, 0 to 10 and 1 tp 5 VDC; 4 to 20 mA.

PVN Pressure

LPG4

2.5" Low Pressure Gage / 1.5% Full Scale Accuracy in a 2.5" Gage. Ranges : -235 to 160 in w.c. (-60 to 40 kPa). Process Connections : 1/4 Male NPT.

PVN Pressure

LPG5

2.5" Low Pressure Gage / 3-2-3% Full Scale Accuracy in a 2.5" Gage. Ranges : 0 to 60 in w.c. , 0 to 200 psi. Process Connections: 1/4˝ male NPT.

PVN Pressure

SGY

2.5" Industrial Pressure Gage / 1.5% FS Accuracy, Brass Wetted Parts, Dual PSI/Bar x100 kPa Scales. Ranges : -30" Hg to 1000 psi (-1 to 70 bar). Service : Compatible gases and liquids. Process Connections : 1/4" male NPT.

PVN Pressure

SGZ

2.5" Industrial Pressure Gage / 1.5% FS Accuracy, 316 SS Wetted Parts, Dual PSI/Bar x100 kPa Scales. Ranges : -30"Hg to 1000 psi (-1 to 70 bar). Service : Compatible gases and liquids. Process Connections : 1/4" male NPT.

PVN Pressure

765

Process Gage with Dampened Movement / ±0.5% Accuracy, Safety Blow-Out Back. Ranges : 30"Hg to 20,000 psi (-100 to 135,000 kPa). Service : Compatible gases & liquids. Size : 4-1/2" (114.3 mm) dial face. Process Connections : 1/4" or 1/2" NPT male.

PVN Pressure

DPGA

Digital Pressure Gage with 1% Accuracy / Economic Gage With Selectable Engineering Units, Rubber Boot. Ranges : -30" Hg to 500 psig (-1.013 to 34.47 bar). Service : Air and compatible gases. Process Connection : 1/4" male NPT.

PVN Pressure

DPGW

Digital Pressure Gage with 1% Accuracy / Economic Gage With Selectable Engineering Units, Rubber Boot. Ranges : -30" Hg to 500 psig (-1.013 to 34.47 bar). Services : liquids and compatible gases. Process Connection : 1/4" male NPT.

PVN Pressure

DPG-000

Digital Pressure Gage / ±0.5% F.S. Accuracy, NEMA 4X (IP66) Aluminum Housing. Ranges : -14.7 to 8000 psig (-1.0 to 550 bar) Service : Compatible liquids and combustible gases . Size : 3.00" OD x 1.90" deep (max). Process Connection : 1/4" male NPT.

PVN Pressure

DPG-100

Digital Pressure Gage / ±0.25% F.S. Accuracy, NEMA 4X (IP66) Aluminum Housing. Ranges : -14.7 to 8000 psig (-1.0 to 550 bar) Service : Compatible liquids and combustible gases . Size : 3.00" OD x 1.90" deep (max). Process Connection : 1/4" male NPT.

PVN Pressure

DPG-200

Digital Pressure Gage / 3-in-1: Gage, Transmitter and Switch. Ranges : 5 to 8000 psig (0.3 to 550 bar). Service:Liquids and non-combustible compatible gases. Size : 3.00" OD x 1.90" deep (not including cables). Process Connection : 1/4" male NPT. Switch Type : 2 SPDT Form C contacts.

PVN Pressure

DSGT

Digital Indicating Transmitter / ±0.25% Full Scale Accuracy, Optional Switch Outputs. Renges : 30 to 20,000 psig and conpound ranges. Process Connection : 1/2" male NPT. Output Signal : 4 to 20 mA.

PVN Pressure

EDA

Electronic Pressure Controller / 2 Switches, Indicating Gage, and Transmitter in One Package. Ranges : 20 to 3000 psig. Service:Compatible liquids and gases. Switch Type : 2 SPDT relays. Output Signal:4-20 mA, 1-6 VDC, 1-5 VDC, 0-5 VDC, or 0-10 VDC (direct or reverse output selection).

PVN Pressure

626/628

Industrial Pressure Transmitter / Complete Offering of Ranges, Connections and Outputs. Ranges : up to 300 psia, 8000 psig, 16 bar abs, 550 bar. Service : Compatible gases and liquids. Output Signal : 4 to 20 mA, 0 to 5 VDC,1 to 5 VDC, 0 to 10 VDC, or 0.5 to 4.5 VDC, or selectable 0 to 5, 1 to 5, 0 to 10, 2 to 10 VDC for -CB option. Response Time : 300 ms.

PVN Pressure

IWP

Industrial Weatherproof Pressure Transmitter / Exceptional Reliability for Harsh Environments. Services : 30 to 1000 psig. Service : Gases and liquids compatible with wetted materials. Output Signal : 4 to 20mA. Process Connection : 1/2" female NPT.

PVN Pressure

3200G

Explosion-proof Pressure Transmitter / HART® Communication, Push Button Configuration, Rangeability (100:1). Ranges : -14.5 psig to 8500 psig. Service : Compatible gases, steam, liquids or vapors. Output Signal : 4 to 20 mA / HART® Communication. Process Connections : 1/2" female NPT.

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