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PRESSURE INSTRUMENTS
Switzer offers a wide range of pressure and differential pressure switches for controls, Pressure and differential pressure Indicators for measurement, portable digital manometer and calibrator and pressure transmitters. The range of products vary with the sensors used, range and condition of application
 

Pressure Switches

Compare Models and Features
Electronic Pressure Switch      Compact High Value       
  • Model EPS 711
  • Piezo-Resistive SS sensor
  • Range (–)1 to 350 bar
  • Max. Working Pr. Up to 2X max. range
  • Analog Output
  • Two Set-point Relay Output
  • Multiple Unit Selection
  • 1 x 8 dot matrix LCD display
  • Die-Cast Aluminium IP:65 Enclosure
Brochures
Manuals

 
  • Model DM 601
  • Diaphragm Sealed Piston with SS316 Wetted parts
  • Range (–)0.2 to 16 bar
  • Max. Working Pr. Upto 60 bar
  • Pressure Die-Cast Aluminium IP:66 Enclosure
  • Process Connection 1/4" or 1/2 " NPTF
Brochures

 
Bellows Sensor Diaphragm Sensor
  • Models 201, 203,281, 901, 902 & 903
  • Phosphor Bronze / 316 LSS Bellows
  • Range (–)1~0 to 15~75 bar
  • Max. Working Pr. Up to 80 bar
  • Repeatability 0.5% FSR(1.0% FSR for 281)
  • Fixed or adjustable On-Off differential
  • Independent High – Low set points
    ( Model 281 only)
  • Weatherproof and Flameproof Pr Die Cast Aluminium or weatherproof Investment Cast SS enclosure
  • Instrument quality snap acting SPCO micro switch.One or Two as required
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Brochures
Manuals
201, 203,281 with GK, GM or GA
201, 203,281 with GR
901, 902 & 903

 
  • Pr Die Cast Aluminium Weatherproof and Flameproof or Investment Cast SS Enclosures
  • Switching Instrument quality snap acting SPCO micro switch - One or Two as required
Models
 204 / 208 / 209
021 / 023
Sensor
 316 LSS Diaphragm Sensor Elastomer Diaphragm Sensor
Range
 (–1) to 15 bar (–)100 m Bar to 4.0 bar
Max. Working Pr.
 100 bar Up to 15 bar
Repeatability
 1% FSR 2% FSR

 

Brochures
Manuals
Series 204
021 and 023

 
Diaphragm Sealed Piston Bourdon Tube Sensor
  • Models S21 / S24 / 921 / 924
  • 316 SS Diaphragm Sealed Piston
  • Max. Working Pr. S21 / 921 - Up to 155 bar & S24 / 924 - Up to 1000 bar
  • Repeatability 1% FSR
  • Pr Die Cast Aluminium Weatherproof and Flameproof or Investment Cast SS enclosures
  • Switching Instrument quality snap acting SPCO micro switch. One or Two as required
Brochures
Manuals
  • Model 931
  • 316 Ti, ‘C’ or Coiled Bourdon
  • Range1.6 to 600 bar
  • Max. Working Pr. 130% FSR
  • Repeatability 1% FSR
  • Set points , One or Two as required
  • Weatherproof Engineering Plastic Enclosure or Die-Cast Aluminium explosion proof Enclosure
  • Instrument quality snap acting SPCO micro switch
Brochures
Manuals

 
 
 

Differential Pressure Switches

316 LSS Diaphragm Elastomer Diaphragm
  • Models 301 / 303 / 304 / 381 / 384
  • Range 5 mbar to 15 bar
  • Max. Working Pressure for 301/ 303 / 381 - 110 bar & for 304 / 384 - 250 bar
  • Fixed or adjustable On-Off differential
  • Independent High - Low set points
    ( Model 381 & 384 only)
  • Repeatability 1% FSR
  • Pr Die Cast Aluminium Weatherproof and Flameproof or Investment Cast SS enclosures
  • Switching - Instrument quality snap acting SPCO micro switch. One or Two as required
Brochures
Manuals
GK, GA, GM
GR

 
  • Models 306 / 386
  • Range ±0.6 mbar to 4.0 bar
  • Max. Working Pr. 0.5 & 15 bar
  • Independent High - Low set points
    ( Model 386 only)
  • Repeatability 1% FSR
  • Pr Die Cast Aluminium Weatherproof and Flameproof or Investment Cast SS weatherproof enclosures
  • Instrument quality snap acting micro switch. One or Two required
  • Models 310 / 313
  • Range ±2.5 mbar to 100 mbar
  • Max. Working Pr. 0.5 bar
  • Repeatability 2% FSR
  • Pr Die Cast Aluminium Weatherproof and Flameproof or Investment Cast SS weatherproof enclosures
  • Instrument quality snap acting micro switch. One or Two as required
Brochures
Manuals
306 / 386
310 / 313

 
   


Differential Pressure Indicators

Capsule - Bellows Sensor 316 Ti Bourdon Sensor
  • Models 105 / 106
  • Range 250 to 10000 mm WC
  • Body 316 SS
  • Max. Working Pr.100 to 400 bar
  • Accuracy 1% FSR
  • Micrometer Pointer
  • One or Two Set-points
  • Snap Acting Microswitches
  • Dial 150 mm
  • Die Cast Al/304 SS Gauge Case
  • Weather proof to IP 66
Brochures
Manuals
  • Models 109
  • Range 0 ~ 1 bar to 0 ~ 350 bar
  • Body 316 SS
  • Max. Working Pr. 60 to 400 bar
  • Accuracy 1% FSR
  • Micrometer Pointer
  • One or Two set points
  • Electronic Switching
  • Dial 150 mm
  • Die Cast Al/304 SS Gauge Case
  • Weather proof to IP 66
Brochures
Manuals
316 Diaphragm Sensor 316 SS Piston & Magnet Sensor
  • Models 106D
  • Range 40 mbar to 2.5 bar
  • Body 316 SS
  • Max. Working Pr. 60 bar
  • Accuracy 2% FSR (1% on request)
  • Micrometer Pointer
  • One or Two set points
  • Snap acting micro switches
  • Dial 150 mm
  • Die Cast Al/304 SS Gauge Case
  • Weather proof to IP 66
Brochures
Manuals
  • Models 120 / 122
  • Range 0 ~ 0.7 bar to 0 ~ 7 bar
  • Body 304 / 316 SS
  • Max. Working Pr. 200 bar
  • Accuracy 2% FSR
  • Dial : Model 120 =150 mm, Model 122 = 65 mm (Square)
  • Gauge Case IP : 66
  • Model 120 = Al. / 304 SS
  • Model 122 = Engineering Plastic
Brochures
Manuals

 
Elastomer diaphragm and magnet Sensor
  • Model 180
  • Range 0 ~ 250 mmWC to 0 ~ 1.6 bar
  • Body 304 / 316 SS
  • Max. Working Pr. 10 & 20 bar
  • Accuracy 2% FSR
  • One micro / Reed Switch
  • Dial 150 mm
  • Gauge Case Al / 304 SS, IP : 66
Brochures
Manuals
 

 

Draft Indicators

Model 501
  • Elastomer Diaphragm
  • Edgewise Indicator, 127 mm scale
  • Body Aluminium & Mild Steel
  • Range 25 to 1500 mm WC
  • Positive, Vacuum or Compound ranges
  • Max. Working Pr. 200 to 3000 mm WC
  • Accuracy 2% FSR (1 mm WC for spans up to 50 mm)
  • Pressed Sheet Steel IP : 65 Enclosure
  • Panel or Field Mounting
Brochures
Manuals

 


Pressure Transmitters 2 - Wire
Flameproof Transmitter Weatherproof Transmitter
  • Models 702 / 703
  • Piezo Resistive sensor + 316 SS Diaphragm
  • Wetted Parts 316 SS
  • Range 0 ~ 1 bar to 0 ~ 350 bar
  • Max. Working Pr. 2 × Sensor Range
  • Accuracy ±0.25 %
  • Turn down Ratio 4 : 1
  • Power Supply 11 to 30 V DC
  • Output 4 to 20 mA
  • Load Capability 750 Ohms at 24V DC
  • Mounting Direct on-line / 2" Pipe
  • Weatherproof flameproof Al / Investment Cast SS enclosure
  • K 702 available in IS version

Brochures
Manuals
K702
K703
  • Models 704
  • Piezo Resistive + 316 SS Diaphragm
  • Wetted Parts 316 SS
  • Range 0 ~ 70 mbar to 0 ~ 350 bar
  • Max. Working Pr. 3 × Sensor Range
  • Accuracy ±0.25 %
  • Turn down Ratio 4 : 1
  • Power Supply 9 to 32 V DC
  • Output 4 to 20 mA
  • Load Capability 750 Ohms at 24V DC
  • Mounting Direct on-line
  • Weatherproof 304 SS enclosure

 

Brochures
Manuals

 
Ceramic Sensor - 2 - Wire Trasmitter Indicating Transmitter 2 wire IS version
  • Models 705
  • Piezo Resistive - Ceramic
  • Wetted Parts 316 SS
  • Range 0 ~ 150 mbar to 0 ~ 400 bar
  • Max. Working Pr. 1.5 × Sensor Range
  • Accuracy ±0.5 % for bar ranges & ±1% for mbar ranges
  • Turn down Ratio 2 : 1
  • Power Supply 9 to 32 V DC
  • Output 4 to 20 mA
  • Load Capability 750 Ohms at 24V DC
  • Mounting Direct on-line
  • Weatherproof 304 SS enclosure
Brochures
Manuals
  • Models 712
  • Piezo Resistive + 316 SS Diaphragm
  • Wetted Parts 316 SS Std.
  • Range 0 ~ 70 mbar to 0 ~ 350 bar
  • Max. Working Pr. 3 × Sensor Range
  • Accuracy ±0.25 %
  • Turn down Ratio 2 : 1
  • Power Supply 12 to 32 V DC
  • Output 4 to 20 mA
  • Load Capability 600 Ohms at 24V DC
  • Display 3½ digit, 7 Segment, LCD
  • Mounting Direct on-line
  • Weatherproof/flameproof Aluminium enclosure


Brochures
Manuals

 
Compact 2 - Wire Pressure Transmitter
  • Model 706
  • SS and Ceramic sensor options
  • Weatherproof IP:65
  • Fully Welded and Sealed Stainless Steel Enclosure
  • Range: upto 700 bar
  • Max. Working Pr. : Mostly twice sensor range
  • Accuracy: Upto .25% full span
  • Output 4 to 20 mA
  • Load Capability: Upto 750 Ohms at 24V DC
  • Mounting: Direct on-line
Brochures
Manuals

 


Portable Manometer Calibrator
  • Models K707 and K708
  • Sensor: Silicon Wafer
  • Medium: Clean, dry air
  • Acccuracy : ±0.15% FS ±1 digit
  • Connection: 1/8” NPTF(adaptors and fittings kit provided)
  • Enclosure:ABS Hand-held case
Models
 K707
K708
Range
 0~20 in WC to 0~7 bar 0~700 mm WC to 0~7 Kg / Cm²
Units
 Factory set Field Selectable
LCD Display
 3 ½ digit 4 ½ digit

 

Brochures
Manuals

 
Switzer offers a variety of Chemical Seals for use with its range of Pressure, Differential Pressure Switches, Pressure transmitters and Differential Pressure Indicators, for applications where corrosive, highly viscprocess media are encountered. The seal, capillary in the case of remote seals and pressure sensing element of the instrument are carefully filled with suitable pressure transfer fluid. Any pressure applied to .
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