Features: Lightweight, compact and all-welded rugged stainless steel construction Thin-film & diffused silicon sensors for high accuracy
Optional HART® communication protocol with diagnostics & field calibration, reducing maintenance time and cost; and 10:1 turndown ratio for rangeability, maintaining high accuracy and allowing one part for multiple pressure ranges
Available pressure ranges up to 30,000 PSI
High accuracy down to 0.1% FSO, LHR
cULus, ATEX, IECEx and Single Seal certifications
Explosion proof enclosure with IP66 / IP67 and NEMA 4X, 7 & 9 ratings CE, CRN, NORSOK and NACE compliant and Superior EMI, ESD and RFI protection
Factory sealed, environment friendly, halogen free wires and cable

Features: Barksdale’s 440 Series Intrinsically Safe Transducers provide high accuracy pressure measurement when operating in Class I, Division I environments. Intrinsically safe transducers prevent personal injury and machinery damage by preventing the explosion in the first place. External zener barriers are required in order to meet UL requirements for an intrinsically safe installation. The higher cost of having to install a zener barrier is offset with the comfort of knowing that an explosion will not occur within normal operating conditions. Three models are available: Series 443 (0-5V), Series 445 (4-20mA) and Series 446 (0-10V).

Accuracy (LH & R): ±0.25% FSO at 75°F (±0.5% for vacuum only [-23]) typical
Long Term Stability: ±0.5% FSO of calibration curve
Typical Life Cycle: 100 million cycles
Proof Pressure: 2 times rated pressure or 13,000 psi max. (884 bar), whichever is less

Series 445
• Excitation voltage: 12 to 28 VDC
• Output: 4 to 20 mA
• Full scale output: 16 mA ± 1%
• Zero output: 4 mA ± 2%

Features: The Type-950XP Explosion-proof I/P (current to pressure) transducer produces a pneumatic output that is directly proportional to a current input signal. A closed loop pressure feedback control system provides a highly accurate, stable air pressure output for the operation of actuated valves. The unit can mount in any position and is vibration insensitive. Its compact housing and easily accessible ports and adjustments make set-up and installation of the unit simple. An integral volume booster provides high flow capacity, which increases control speed in critical applications.

Inputs 4-20 mA
Outputs 3-15 psig 0.20-1.00 BAR
3-27 psig 0.20-1.80 BAR
6-30 psig 0.40-2.00 BAR
Air Consumption 3.0 scfh (0.11 m3/hr) at mid range
Supply Pressure 100 psig (7.0 BAR) maximum
Note: Supply pressure must be a minimum of 5 psig above maximum output
Flow Capacity 4.5 scfm (7.6 m3/hr) at 25 psig (1.7 BAR) supply
12.0 scfm (20.0 m3/hr) at 100 psig (7.0 BAR) supply
Temperature Limits Operating -40° to +160° F (-40° to +71° C)
Storage -40° to +200° F (-40° to +93° C)
Loop Load, I/P Transducer 10.0 VDC @ 20 mA
Operating Modes direct, reverse and split range
(Split ranging not possible with field selectable option)

Features: The ControlAir Type 500X converts a current or voltage input signal to a linearly proportional pneumatic output pressure. This versatile instrument is designed for control applications that require a high degree of reliability and repeatability at an economical cost. Optional NEMA 4X (IP65) version allows for splashdown and outdoor installation.

Min./Max. Supply Pressure
Minimum – 3 psig (.21 BAR)
Above maximum output
Maximum – 100 psig (7 BAR)
Supply Pressure Sensitivity
<± 0.1% of span per psig (<± 0.15% of span per 0.1 BAR) Terminal Based Linearity <± 0.75% of span Repeatability < 0.5% of span Hysteresis < 1.0% of span Flow Rate 4.5 scfm (7.6 m3/hr ANR) at 25 psig (1.7 BAR) supply Maximum Air Consumption .05 scfm (.07 m3/hr) midrange typical

Features: Lightweight, compact and all-welded rugged stainless steel construction Thin-film & diffused silicon sensors for high accuracy
Optional HART® communication protocol with diagnostics & field calibration, reducing maintenance time and cost; and 10:1 turndown ratio for rangeability, maintaining high accuracy and allowing one part for multiple pressure ranges
Available pressure ranges up to 30,000 PSI
High accuracy down to 0.1% FSO, LHR
cULus, ATEX, IECEx and Single Seal certifications
Explosion proof enclosure with IP66 / IP67 and NEMA 4X, 7 & 9 ratings CE, CRN, NORSOK and NACE compliant and Superior EMI, ESD and RFI protection
Factory sealed, environment friendly, halogen free wires and cable

Features: The Stellar Technology WECO® 1502 hammer union pressure transducer is ideal for a wide variety of drilling and well servicing applications. The pressure transducer’s all-welded construction ensures there are no fastener failures. The one-piece Inconel male sub and pressure sensing diaphragm will withstand the sour gas environments encountered in many well servicing applications. A proprietary diaphragm is designed for high-cycle applications.

• ±0.25% Accuracy
• Intrinsically Safe: CSA, ATEX
• Flameproof
• Explosion Proof
• Torque Sensitivity Isolated
• RFI/EMI Protection
• Vibration Protected
• Handle and Protective Connector Cap
• Inconel 718 Wetted Parts

Features: The Series GT18XX pressure transducers and pressure transmitters provide an economical solution for many general purpose industrial applications requiring high level outputs. This family of pressure transducers provides a variety of electrical outputs including 4-20 mA current, standard voltage outputs, as well as digital outputs including RS232, RS485, and CANbus. These 0.25% accuracy pressure transducers have a maximum range of 40,000 psi and are available in both gage or absolute references.

• ± 0.25% FSO Accuracy
• High Level Output (Analog & Digital)
• Isolated Voltage Output (For Voltage Output Units)
• Pressure Ranges to 40,000 psi
• Stainless Steel Construction
• Shock and Vibration Resistant
• 15 Point Calibration Record Traceable to NIST
• Many Ranges in Stock for Immediate Delivery

Features: The Series GT16XX pressure transducers and pressure transmitters combine high 0.10% static accuracy with high level outputs. Customers can select 4-20 mA current outputs, numerous voltage outputs, as well as digital outputs including RS232, RS485, and CANbus. Pressure ranges extend to 40,000 psi and are available in absolute or gage references.

• ± 0.10% FSO Accuracy
• High Level Output (Analog & Digital)
• Zero and Span Adjustments
• Isolated Voltage Output (For Voltage Output Units)
• Improved Thermal Performance
• Pressure Ranges to 40,000 psi
• Stainless Steel Construction
• Secondary Containment
• Shock and Vibration Resistant
• 19 Point Calibration Record Traceable to NIST

Features: The compact monolithic construction in our BHyT Cell hydrogen pressure transducers are designed for fuel cell applications, where space is a premium while offering reliability in high pressure applications. Our BHyT Refuel pressure transducers offer explosion proof certification (North America and Europe) up to 20kpsi with autoclave pressure connection and monolithic technology to ensure safety and performance in critical hydrogen refueling station applications. The BHyT transducers are designed to maintain stability throughout the pressure range reducing downtime, maintenance and calibration costs.

• Advanced sensor signal conditioning ASIC ensures high accuracy 0.25% and low offset error at zero pressure.
• Protects against the effects of pressure hammering and spikes, our silicon sensors are rated for 7X – 23X for the working pressure.
• Has the ability to measure pressure ranges from Vacuum to 30,000 psi (2000 bar).
• Offers wide operating temperatures -40C to +100C and water tight IP67 protection and compatibility with demanding media such as H2 and O2.

APPLICATIONS
• Hydrogen Fuel Cell
• Electrolyzers
• Hydrogen Refueling Station

Features: Lightweight, compact and all-welded rugged stainless steel construction Thin-film & diffused silicon sensors for high accuracy
Optional HART® communication protocol with diagnostics & field calibration, reducing maintenance time and cost; and 10:1 turndown ratio for rangeability, maintaining high accuracy and allowing one part for multiple pressure ranges
Available pressure ranges up to 30,000 PSI
High accuracy down to 0.1% FSO, LHR
cULus, ATEX, IECEx and Single Seal certifications
Explosion proof enclosure with IP66 / IP67 and NEMA 4X, 7 & 9 ratings CE, CRN, NORSOK and NACE compliant and Superior EMI, ESD and RFI protection
Factory sealed, environment friendly, halogen free wires and cable

Features: Barksdale’s 440 Series Intrinsically Safe Transducers provide high accuracy pressure measurement when operating in Class I, Division I environments. Intrinsically safe transducers prevent personal injury and machinery damage by preventing the explosion in the first place. External zener barriers are required in order to meet UL requirements for an intrinsically safe installation. The higher cost of having to install a zener barrier is offset with the comfort of knowing that an explosion will not occur within normal operating conditions. Three models are available: Series 443 (0-5V), Series 445 (4-20mA) and Series 446 (0-10V).

Accuracy (LH & R): ±0.25% FSO at 75°F (±0.5% for vacuum only [-23]) typical
Long Term Stability: ±0.5% FSO of calibration curve
Typical Life Cycle: 100 million cycles
Proof Pressure: 2 times rated pressure or 13,000 psi max. (884 bar), whichever is less

Series 445
• Excitation voltage: 12 to 28 VDC
• Output: 4 to 20 mA
• Full scale output: 16 mA ± 1%
• Zero output: 4 mA ± 2%

Features: Lightweight, compact and all-welded rugged stainless steel construction Thin-film & diffused silicon sensors for high accuracy
Optional HART® communication protocol with diagnostics & field calibration, reducing maintenance time and cost; and 10:1 turndown ratio for rangeability, maintaining high accuracy and allowing one part for multiple pressure ranges
Available pressure ranges up to 30,000 PSI
High accuracy down to 0.1% FSO, LHR
cULus, ATEX, IECEx and Single Seal certifications
Explosion proof enclosure with IP66 / IP67 and NEMA 4X, 7 & 9 ratings CE, CRN, NORSOK and NACE compliant and Superior EMI, ESD and RFI protection
Factory sealed, environment friendly, halogen free wires and cable

Features: • Lightweight, compact and all-welded rugged stainless steel construction
• High performance sensors for high accuracy
• Optional HART® communication protocol with diagnostics & field calibration, reducing maintenance time and cost; and 10:1 turndown ratio for re-ranging, maintaining high accuracy and allowing one part number for multiple pressure ranges
• High accuracy: ±0.1% and ±0.25% FSO, (L,H,R)
• cULus Certification for Ordinary Locations
• IP66 & IP67 and NEMA 4X Protection
• CE, CRN, NACE compliant and Superior EMC/EMI protection
• RoHS / REACH Compliant

APPLICATIONS
• Hydraulic and Pneumatic Product Testing
• Engine Testing
• Hydraulic Equipment
• O&G BOP Pressure Testing
• Acid Pumps
• Data Acquisition System
• Heavy Mobile Equipment Testing
• OEM Factory Acceptance Testing
• Pressure Data Loggers
• Mobile Pressure Test Labs

Features: • Lightweight, compact and all-welded rugged stainless steel construction
• Thin-film & diffused silicon sensors for high accuracy
• Optional HART® communication protocol with diagnostics & field calibration, reducing maintenance time and cost; and 10:1 turndown ratio for rangeability, maintaining high accuracy and allowing one part for multiple pressure ranges.
• Available pressure ranges up to 30,000 PSI
• High accuracy down to 0.1% FSO, LHR
• cULus, ATEX, IECEx and Single Seal certifications
• Explosion proof enclosure with IP66 / IP67 and NEMA 4X, 7 & 9 ratings CE, CRN, NORSOK and NACE compliant and Superior EMI, ESD and RFI protection
• Factory sealed, environment friendly, halogen free wires and cable

APPLICATION
• Production Control Systems
• Chemical Injection Systems
• Oil & gas pipelines
• Petrochemical plants
• Refineries
• Coal and oil fired power plants
• Hydraulic Power Units
• Gas transfers for fuel systems

Features: Barksdale’s 420X Series Explosion Proof Transducers prevent an explosion from occurring when operated in a Division 1 environment. Barksdale’s 420X Series transducers prevent personal injury and machinery damage by preventing the explosion the first place. Energy generated within the transducer is of such a low level that intermittently present flammable vapors will not be ignited. External zener barriers are not required in order to meet UL requirements for a non-incendive installation. The lower cost of not having to install zener barriers means that the positive aspects of intrinsically safe and explosion proof are combined in Barksdale non-incendive transducers. Three models are available: Series 423X (0-5V), Series 425X (4-20mA) and Series 426X (0-10V).

420X Series Transducers:
• Explosion Proof
• NEMA 4X for environmental protection
• NEMA 7 & 9 for explosion proof protection
• No zener barrier means simpler installation and lower cost
• UL & C-UL Listed

Features: The GT25XX Series Transmitter incorporates a flameproof/explosion proof housing which allows the use of both our analog & digital electronics. This versatility allows STI to utilize its years of electronic development to provide “Application-Solutions” for years of service in demanding environments.

• Explosion Proof – USA/CAN CSA/US CLI Div 1&2, Groups A,B,C,D
• Rugged Strain Gage Technology
• Reliable Long Term Stability
• Stainless Steel Construction
• Low Sensitivity to Shock & Vibration
• Analog or Digital Electronics

Features: Barksdale’s Series 423 and 426 Transducers and 425 Transmitters are general purpose, industrial grade transducers, ideal for use in general industrial applications when a robust transducer is required. Wetted parts are constructed of 17-4PH and 300 Series Stainless Steel, with NEMA 4 enclosures constructed of 304 Stainless Steel. These units feature a stable, diffused silicon sensor that achieves .25% accuracy, have pressure ranges from 0-10,000 psi and are available in 5V, 10V or 4-20 mA outputs. High pressure snubbers are standard on units at 2,000 psi and above. Optional surge voltage protection to 6kV is available. A variety of process fittings and electrical connections are available to meet your needs.

Accuracy (LH & R): ±0.25% BSL
Long Term Stability: ±0.5% FSO of calibration curve
Typical Life Cycle: 100 million cycles
Proof Pressure: 2 times rated pressure or 13,000 psi max. (884 bar), whichever is less
Input:
425: Excitation voltage: 12 to 32 VDC
Supply Current: 15 mA maximum (no load)
Min. Load Resistance: 2K ohms (voltage series only)
Output:
425: Output: 4 to 20 mA
Full scale output: 16 mA ± 0.4%
Zero output: 4 mA ± 0.2%

Features: Barksdale’s 430 Series Non-IncendiveTransducers prevent an explosion from occurring when operated in a Division II environment. Barksdale’s 430 Series, non-incendive transducers prevent personal injury and machinery damage by preventing the explosion in the first place. Energy generated within the transducer is of such a low level that intermittently present flammable vapors will not be ignited. External zener barriers are not required in order to meet UL requirements for a non-incendive installation. Three models are available: Series 433 (0-5V), Series 435 (4-20mA) and Series 436 (0-10V).

Accuracy (LH & R): ±0.25% FSO at 75°F (±0.5% for vacuum only [-23]) typical
Long Term Stability: ±0.5% FSO of calibration curve
Typical Life Cycle: 100 million cycles
Proof Pressure: 2 times rated pressure or 13,000 psi max. (896 bar), whichever is less
Input:
435:
Excitation voltage: 12 to 28 VDC
Output:
435: Output: 4 to 20 mA
Full scale output: 16 mA ± 1%
Zero output: 4 mA ± 2%

Features: Barksdale’s 440 Series Intrinsically Safe Transducers provide high accuracy pressure measurement when operating in Class I, Division I environments. Intrinsically safe transducers prevent personal injury and machinery damage by preventing the explosion in the first place. External zener barriers are required in order to meet UL requirements for an intrinsically safe installation. The higher cost of having to install a zener barrier is offset with the comfort of knowing that an explosion will not occur within normal operating conditions. Three models are available: Series 443 (0-5V), Series 445 (4-20mA) and Series 446 (0-10V).

Accuracy (LH & R): ±0.25% FSO at 75°F (±0.5% for vacuum only [-23]) typical
Long Term Stability: ±0.5% FSO of calibration curve
Typical Life Cycle: 100 million cycles
Proof Pressure: 2 times rated pressure or 13,000 psi max. (884 bar), whichever is less

Series 445
• Excitation voltage: 12 to 28 VDC
• Output: 4 to 20 mA
• Full scale output: 16 mA ± 1%
• Zero output: 4 mA ± 2%

Features: Barksdale’s 440 Series Intrinsically Safe Transducers provide high accuracy pressure measurement when operating in Class I, Division I environments. Intrinsically safe transducers prevent personal injury and machinery damage by preventing the explosion in the first place. External zener barriers are required in order to meet UL requirements for an intrinsically safe installation. The higher cost of having to install a zener barrier is offset with the comfort of knowing that an explosion will not occur within normal operating conditions. Three models are available: Series 443 (0-5V), Series 445 (4-20mA) and Series 446 (0-10V).

• Accuracy (LH & R): ±0.25% FSO at 75°F (±0.5% for vacuum only [-23]) typical
• Long Term Stability: ±0.5% FSO of calibration curve
• Typical Life Cycle: 100 million cycles
• Proof Pressure: 2 times rated pressure or 13,000 psi max. (884 bar), whichever is less

SERIES 445
• Excitation voltage: 12 to 28 VDC
• Output: 4 to 20 mA
• Full scale output: 16 mA ± 1%
• Zero output: 4 mA ± 2%

APPLICATION
• Oil & gas pipelines
• Well Monitoring
• Petrochemical plants
• Refineries
• Pulp and paper mills
• Coal and oil fired power plants
• Cement plants
• Gas transfers for fuel systems
• Gas panels
• Gas mixing systems

Features: The FT29XX pressure transmitters are designed with internal signal conditioning. Customers can select 4-20 mA current outputs, numerous voltage outputs, as well as digital outputs including RS232, RS485, and CANbus. These pressure sensors are constructed of all welded stainless steel and can withstand very demanding application environments. FT29XX pressure transmitters are ideal for many metering and dispensing applications. Additional design features include low sensitivity to shock and vibration. Standard units come in 1/4” NPTM, 1/2” NPTM and 1-1/4” NPTM configurations.

• Flush Diaphragm (Zero Dead Volume)
• Flush Diaphragm Insensitive to Torque
• Amplified Output (Analog and Digital)
• Standard NPTM Process Connection
• Compact Size
• Pressure Ranges from 50 psig to 10,000 psig
• All Stainless Steel Construction
• Shock and Vibration Resistant
• 19 Point Calibration Record Traceable to NIST

Features: The Series GT18XX pressure transducers and pressure transmitters provide an economical solution for many general purpose industrial applications requiring high level outputs. This family of pressure transducers provides a variety of electrical outputs including 4-20 mA current, standard voltage outputs, as well as digital outputs including RS232, RS485, and CANbus. These 0.25% accuracy pressure transducers have a maximum range of 40,000 psi and are available in both gage or absolute references.

• ± 0.25% FSO Accuracy
• High Level Output (Analog & Digital)
• Isolated Voltage Output (For Voltage Output Units)
• Pressure Ranges to 40,000 psi
• Stainless Steel Construction
• Shock and Vibration Resistant
• 15 Point Calibration Record Traceable to NIST
• Many Ranges in Stock for Immediate Delivery

Features: The GT2250 Series is an intrinsically safe electronics package, which can be integrally added to our standard 4-20mA devices. Represented as its own product series as the GT2250, it allows all of our standard mechanical configurations to be utilized. This not only allows us to maintain years of field-use data but to implement new configurations by developing “Application- Solutions” as you, our customers, demand.

• Intrinsically Safe – CAN/USA CSA CLI Div 1&2, GR.A, B, C, D
• Rugged Strain Gage Technology
• Reliable Long Term Stability
• Stainless Steel Construction
• Infinite Resolution
• Low Sensitivity to Shock & Vibration

Features: The Series GT16XX pressure transducers and pressure transmitters combine high 0.10% static accuracy with high level outputs. Customers can select 4-20 mA current outputs, numerous voltage outputs, as well as digital outputs including RS232, RS485, and CANbus. Pressure ranges extend to 40,000 psi and are available in absolute or gage references.

• ± 0.10% FSO Accuracy
• High Level Output (Analog & Digital)
• Zero and Span Adjustments
• Isolated Voltage Output (For Voltage Output Units)
• Improved Thermal Performance
• Pressure Ranges to 40,000 psi
• Stainless Steel Construction
• Secondary Containment
• Shock and Vibration Resistant
• 19 Point Calibration Record Traceable to NIST