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Pneumatic Instruments

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Our Pneumatic Instruments category contains a comprehensive selection of pneumatic components including pneumatic relays, pneumatic volume boosters and pneumatic i/p - p/i converters.

We pride ourselves on bringing you the best and latest technologies, and that's precisely what you'll find here. With products from trusted manufacturers including Fairchild, Midland & Siemens, our pneumatic instruments range comprises only the highest quality and most reliable products, tried and tested by our experienced in house engineers.

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SIEMENS MOORE - 40 41 42 PRECISION PRESSURE REGULATOR Model Number: 40 41 42

Supply pressure 500 psig Maximum. Sensitivity less than 1/8' Water Column. Adjustment range 1-50"H20 to 15-450 psig. Pipe Size 1/8' NPT - 1/2' NPT/BSPT.

Siemens Moore products Model 91-HF Filter-Regulator Model Number: 91 hf

Output Range 0-120 psig Maximum Supply Pressure 150 psig Sensitivity 1” (2.5 cm) of water Air Consumption Less than 5 SCFM (0.17 m3/hr)

Siemens Moore Products Series 77 & 771 I-P transducers Model Number: 77 & 771

Supply Pressure 20 psig, ±2 psig for 3-15 psig output 30 psig, ±2 psig for 3-27 psig output Connections 1/4" NPT Output Capacity 0.16 scfm

SIEMENS MOORE PRODUCTS Model 62 63 66 661 Pneumatic Relays Model Number: 62 63 66 661

Maximum supply pressure 80 or 150 psig. Repeatability 1% Adjustment range 2' W.C.-10 to 2.0-120. Inlet and Outlet 1/4"

FAIRCHILD MODEL T5700 - I-P TRANSDUCER / CONVERTER Model Number: T5700

Wall or panel mountable. +/-0.1% repeatability. 3-15psi output. Supply pressure effect 0.3% of span for 1PSi change.

SIEMENS MOORE PRODUCTS Series 74G Pneumatic Valve Positioner Model Number: 74G

Input Ranges 3-15, 3-9, 3-27, 0-15, and 0-30 psig including split Valve-Stroke Ranges 1/4" minimum -48" maximum Supply Pressure 3 psig min above full actuator pressure minimum 150 psig maximum

FAIRCHILD MODEL T6000 - I-P TRANSDUCER / CONVERTER Model Number: T6000

Output range 3-15 psig to 0-120 psig. Minimum Span 5 psig. Hysteresis & repeatability 0.25% FS. Flow rate (SCFM) 11 @ 150 psig supply & 9 psig output.

FAIRCHILD MODEL T5220 - I-P TRANSDUCER / CONVERTER Model Number: T5220

Output range (1:1 Ratio) 3-15 psig. Output Capacity (SCFM) 15 Maximum @ 20 psig supply, 45 @100 psig. Input Signal Various. Approvals: FM, CSA & CENELEC - Explosion-Proof & Intrinsically Safe.

FAIRCHILD MODEL T5221 - I-P TRANSDUCER / CONVERTER Model Number: T5221

Output Range Minimum 10' Water Column to 50', Maximum 0-150 psig. Output Capacity (SCFM) 40 Maximum with 100 psig, Booster Supply. Input Signal Various. Approvals: FM, CSA & CENELEC Intrinsically Safe.

FAIRCHILD MODEL T6100 - FAIL FREEZE I-P TRANSDUCER / CONVERTER Model Number: T6100

Locks in Last Position. Accurately captures setpoint. IP65 Rating. Moisture resistant PCB.

FAIRCHILD MODEL 1500A - POSITIVE BIAS RELAY Model Number: 1500A

Supply pressure 250 psig max. Flow capacity (SCFM) 150 . Sensitivity 1' Water Column. Adjustment range 0.5-10 psig.

FAIRCHILD MODEL 90/91 - HI & LOW SELECTOR RELAY Model Number: 90/91

Maximum signal pressure 200 psig. Minimum switching differential less than .1 psig. Maximum differential between signals 100 psig. Port size 1/4' NPT/BSPT.

FAIRCHILD MODEL 200 - VOLUME BOOSTER Model Number: 200

Supply Pressure 250 psig Maximum. Output Pressure 150 psig Maximum. Flow Capacity (SCFM) 830 @100 psig, 20 set point. Sensitivity 1' Water Column. Pipe Size 1' NPT - 1 1/2' NPT.

FAIRCHILD MODEL T7800 - I-P TRANSDUCER / CONVERTER Model Number: T7800

Output range 3-15 psig to 0-120 psig. Input range 4-20mA DC, 0-10 VDC, 1-9 VDC. Flow Rate (SCFM) 11.0 @ 150 psig supply & mid scale output. Repeatability 0.1% Full Scale. Approvals: ATEX, FM, CSA & CENELEC - Intrinsically Safe & Non-Incendive.

FAIRCHILD MODEL 14 - POSITIVE & NEGATIVE BIAS RELAY Model Number: 14

Flow capacity 40 SCFM @ 100 psig supply, 20 psig set point. Sensitivity 1/2' Water Column. Supply Pressure 250 psig maximum. Output Pressure 150 psig maximum. Pipe size 1/4' NPT - 3/8' NPT/BSPT.

FAIRCHILD MODEL 85D - MULTI STAGE BIASING RELAY Model Number: 85D

Flow capacity 14 SCFM. Pressure change under flow conditions less than 0.1 psig. Maximum supply pressure 250 psig. Maximum signal or output pressure 150 psig. Adjustment range 0-20 psig to 1-100 psig. Pipe size 1/8' NPT - 3/8' NPT/BSPT.

FAIRCHILD MODEL 2500A - BIASING REVERSING RELAY Model Number: 2500A

Supply Pressure 250 psig Maximum. Output Pressure 150 psig Maximum. Flow Capacity (SCFM) 150 @ 100 psig supply & 20 psig set point. Sensitivity 1' Water Column. Adjustment range 0.5-10 psig to 2-150 psig. Pipe size 3/8' NPT - 3/4' NPT.

FAIRCHILD MODEL 4800A - PNEUMATIC VOLUME BOOSTER Model Number: 4800A

Supply Pressure 250 psig Maximum. Outlet Pressure 150 psig Maximum. Flow Capacity (SCFM)500 @100 psig inlet, 20 psig set point. Fixed deadband between operation of supply and exhaust valves for accurate and stable positioning.

MIDLAND ACS 3000 SERIES - STAINLESS STEEL VOLUME BOOSTER Model Number: 3000

Supply / Output connection: ¼', ½' or ¾' NPT (F). Signal Connection: ¼' NPT (F). Supply Pressure: Up to 150 psig (10.3 bar). Pressure Ratio: 1:1. Operating Supply Gases: Air, Nitrogen, Methane (Natural Gas)

FAIRCHILD MODEL 21 - ADJUSTABLE RATIO RELAY Model Number: 21

Flow capacity 40 SCFM @ 100 psi supply, 20 psi set point. Sensitivity 0.5' Water Column. Supply pressure 250 psi maximum, Out let pressure 150 psi maximum. Ratio range 30:1 through 1:30. Pipe size 1/4' NPT - 3/8' NPT/BSPT.

FAIRCHILD MODEL 22 - COMPUTING RELAY Model Number: 22

Adjustable bias over range -18 to + 15 psig. Input and output pressure range 3-15 psig. Maximum operating pressure: Signal and output 50 psig Supply 150 psig. Pipe size 1/4' NPT - 3/8' NPT.

FAIRCHILD MODEL 24 - SNAP ACTING RELAY Model Number: 24

Maximum supply pressure 120 psig. Signal range 2' Water Column to 120 psig. Repeatability 0.2' Water Column. Adjustment range 2' W.C.-10 to 2.0-120. Inlet and Outlet 1/4' 3/8'.

FAIRCHILD MODEL 4500A - PNEUMATIC VOLUME BOOSTER Model Number: 4500A

Maximum Output Pressure 150 psig. Maximum Supply Pressure 250 psig. Flow Capacity 150 SCFM @ 100 psig supply SCFM, 20 psig set point. Ratio 1:1 to 3:1. Pipe size 3/8 NPT - 3/4 NPT.

FAIRCHILD MODEL 4900A - PNEUMATIC VOLUME BOOSTER Model Number: 4900A

Supply Pressure 250 psig Max. Outlet Pressure 150 psig Max. Very low deadand between the supply valve and exhaust valve. Flow Capacity (SCFM)500 @100 psig inlet, 20 psig set point. High Accuracy, sensitivity and excellent low pressure performance.

FAIRCHILD MODEL 2000 - VOLUME BOOSTER Model Number: 2000

Maximum Supply Pressure 250 psig. Maximum Output Pressure 150 psig. Flow Capacity (SCFM) 40 @ 100 psig & 20 psig set point. Sensitivity Less than 1' Water Column. Ratio 1:1 - 1:1.6. Pipe size 1/4' NPT - 3/8' NPT/BSPT.

FAIRCHILD MODEL 15 - POSITIVE BIAS RELAY Model Number: 15

Flow Cap. 40 SCFM @ 100 psig. Sensitivity 1/4' Water Column. Supply Pressure 250 psig max. Output Pressure 150 psig max.

FAIRCHILD MODEL T8000 - P-I TRANSDUCER / CONVERTER Model Number: T8000

Pneumatic Input Range 0-5 psig to 0-120 psig. Current Output 4-20 mA or 10-50 mA. Minimum Input Span 4 psig. Maximum Input Span 200 psig. Approvals: FM & CSA - Explosion-proof and Intrinsically Safe.

FAIRCHILD MODEL TXI7800 - I-P TRANSDUCER / CONVERTER Model Number: TXI7800

Output range 3-15 to 6-30. Minimum Span 5 psig. Flow Rate (SCFM) 9.0 @ 420 psig & 9 psig Output. Approvals: ATEX, CENELEC & SAA - Flame Proof and Intrinsically Safe.

FAIRCHILD MODEL TXI7850 - ELECTRO-PNEUMATIC TRANSDUCER Model Number: TXI7850

Optional tapped exhaust port vents exhaust gas. Does not contain copper-based metals. Compact size for use in restricted areas. Optional version approved for use with Natural Gas or Industrial Methane as a supply media.

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We've positive and negative bias relays, adjustable ratio relays, computing, snap acting and bias reversing relays to name but a few, as well as a comprehensive selection of Fairchild or Siemens Pneumatic Volume Boosters.

Add to this the selection of Fairchild & Siemens model I/P and P/I converters or transducers, and we're sure you'll be happy with the range on our website.

If it happens that you can't find the precise model you're looking for, our website does offer a search by part number function in the search bar above, or to make things even easier - let us find it for you!

You can contact our team of experienced engineers using our contact form, our live chat facility which should be showing around the bottom right of your screen, or on +44 (0) 800 328 8511

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