Pressure Modules & Readouts
Flexible Pressure Measurement for Field and Laboratory Applications
Build a flexible pressure measurement system with Additel pressure modules, sensors, and handheld readouts. These products support field calibration, laboratory testing, data logging, and multi-range pressure measurement.
Products
Additel 226 Multifunction Process Calibrator
Sources, simulates, and measures pressure, temperature, and electrical signals
Built-in barometer
Intrinsically safe model available (ADT226Ex)
Large smartphone-style color touchscreen
USB Type-C and Bluetooth communication, IP67 rated
High voltage measurement to 300V AC with true RMS meter capability
Dual channel pressure module ports
High static differential pressure measurement to 0.002% FS
ISO 17025 accredited calibration with data included
Overview
The Additel 226 packs sourcing, simulation, and measurement of pressure, temperature, and electrical signals into one portable process calibrator with an intuitive color touchscreen. It is the cost-effective member of Additel's multifunction calibrator series, and the ATEX certified ADT226Ex version extends the same capability into hazardous environments. Dual pressure module ports accept Additel's external modules, and the built-in barometer supports gauge and absolute measurement.
Part Number: ADT226EX.
Accessories
110V/220V external power adapter
110V/220V external power adapter
Chargeable Li-ion battery
Chargeable Li-ion battery
Test leads 1 set
Right angle test leads
Pressure module connection cable
USB Cable type A to type C
USB Cable type A to type C
Hanging strap with magnet
Multimeter Test Hook, Flexible Electronic
Probe
Small Multimeter Test Hooks 1 set
ISO 17025 accredited calibration certificate
Additel 226 Multifunction Process Calibrator
Sources, simulates, and measures pressure, temperature, and electrical signals
Built-in barometer
Intrinsically safe model available (ADT226Ex)
Large smartphone-style color touchscreen
USB Type-C and Bluetooth communication, IP67 rated
High voltage measurement to 300V AC with true RMS meter capability
Dual channel pressure module ports
High static differential pressure measurement to 0.002% FS
ISO 17025 accredited calibration with data included
Overview
The Additel 226 packs sourcing, simulation, and measurement of pressure, temperature, and electrical signals into one portable process calibrator with an intuitive color touchscreen. It is the cost-effective member of Additel's multifunction calibrator series, and the ATEX certified ADT226Ex version extends the same capability into hazardous environments. Dual pressure module ports accept Additel's external modules, and the built-in barometer supports gauge and absolute measurement.
Part Number: ADT226.
Accessories
110V/220V external power adapter
110V/220V external power adapter
Chargeable Li-ion battery
Chargeable Li-ion battery
Test leads 1 set
Right angle test leads
Pressure module connection cable
USB Cable type A to type C
USB Cable type A to type C
Hanging strap with magnet
Multimeter Test Hook, Flexible Electronic
Probe
Small Multimeter Test Hooks 1 set
ISO 17025 accredited calibration certificate
Additel 260Ex Intrinsically Safe Multichannel Reference Recorder
Up to 8 measurement channels
Intrinsically safe
Field switchable pressure module
Pressure accuracy to 0.02% FS
Temperature RTD accuracy to 0.01% RDG + 0.005% FS
Data logging with real-time graphical trending
Supports hydrostatic testing
Color touchscreen display
Built-in barometer
Optional RTD probes available
Bluetooth and USB communication
Communicates with the Additel Link mobile app
ISO 17025 accredited calibration with data included
Overview
The Additel 260Ex puts pressure, temperature, barometric, and electrical measurement into one intrinsically safe handheld (ATEX and IECEx certified, Ex ia IIC T4 Ga) with eight channel configurations: a field-switchable internal pressure module, a user-calibratable barometer, two external module inputs, a synthesized differential pressure channel, two RTD channels supporting 2, 3, or 4 wire sensors, and an electrical channel measuring current, voltage, frequency, pulse, or switch with built-in loop power.
The onboard recorder logs multiple parameters at once with trend curves and statistical feedback, storing up to 10 million readings at intervals from 0.1 s to 9,999 s. That logging depth plus the intrinsic safety rating make it a strong fit for pipeline work: hydrostatic testing, air leak testing, pump station inlet and outlet checks, safety valve testing, wellhead pressure testing, and routine calibration of pressure devices in hazardous gas environments.
Available configurations. Range: V15 bar, V15 psi. Process Connection: 1/4 BSP, 1/2 BSP, M20x1.5, 1/4 NPT, 1/2 NPT.
Base model ADT260EX. Each configuration has its own Additel part number, shown as the SKU on your order.
Accessories
9811Ex-X 110V/220V external power adapter
9704Ex Chargeable Li-ion battery
9021 Test leads
9040 Hanging strap with magnet
9052Ex Ex USB Cable type A to type C
ISO 17025 accredited calibration certificate
Additel 260Ex Intrinsically Safe Multichannel Reference Recorder
Up to 8 measurement channels
Intrinsically safe
Field switchable pressure module
Pressure accuracy to 0.02% FS
Temperature RTD accuracy to 0.01% RDG + 0.005% FS
Data logging with real-time graphical trending
Supports hydrostatic testing
Color touchscreen display
Built-in barometer
Optional RTD probes available
Bluetooth and USB communication
Communicates with the Additel Link mobile app
ISO 17025 accredited calibration with data included
Overview
The Additel 260Ex puts pressure, temperature, barometric, and electrical measurement into one intrinsically safe handheld (ATEX and IECEx certified, Ex ia IIC T4 Ga) with eight channel configurations: a field-switchable internal pressure module, a user-calibratable barometer, two external module inputs, a synthesized differential pressure channel, two RTD channels supporting 2, 3, or 4 wire sensors, and an electrical channel measuring current, voltage, frequency, pulse, or switch with built-in loop power.
The onboard recorder logs multiple parameters at once with trend curves and statistical feedback, storing up to 10 million readings at intervals from 0.1 s to 9,999 s. That logging depth plus the intrinsic safety rating make it a strong fit for pipeline work: hydrostatic testing, air leak testing, pump station inlet and outlet checks, safety valve testing, wellhead pressure testing, and routine calibration of pressure devices in hazardous gas environments.
Part Number: ADT260EX-NO.
Accessories
9811Ex-X 110V/220V external power adapter
9704Ex Chargeable Li-ion battery
9021 Test leads
9040 Hanging strap with magnet
9052Ex Ex USB Cable type A to type C
ISO 17025 accredited calibration certificate
Additel 260Ex Intrinsically Safe Multichannel Reference Recorder
Up to 8 measurement channels
Intrinsically safe
Field switchable pressure module
Pressure accuracy to 0.02% FS
Temperature RTD accuracy to 0.01% RDG + 0.005% FS
Data logging with real-time graphical trending
Supports hydrostatic testing
Color touchscreen display
Built-in barometer
Optional RTD probes available
Bluetooth and USB communication
Communicates with the Additel Link mobile app
ISO 17025 accredited calibration with data included
Overview
The Additel 260Ex puts pressure, temperature, barometric, and electrical measurement into one intrinsically safe handheld (ATEX and IECEx certified, Ex ia IIC T4 Ga) with eight channel configurations: a field-switchable internal pressure module, a user-calibratable barometer, two external module inputs, a synthesized differential pressure channel, two RTD channels supporting 2, 3, or 4 wire sensors, and an electrical channel measuring current, voltage, frequency, pulse, or switch with built-in loop power.
The onboard recorder logs multiple parameters at once with trend curves and statistical feedback, storing up to 10 million readings at intervals from 0.1 s to 9,999 s. That logging depth plus the intrinsic safety rating make it a strong fit for pipeline work: hydrostatic testing, air leak testing, pump station inlet and outlet checks, safety valve testing, wellhead pressure testing, and routine calibration of pressure devices in hazardous gas environments.
Available configurations. 52 pressure ranges. Process Connection: 1/4 BSP, 1/2 BSP, M20x1.5, 1/4 NPT, 1/2 NPT, 1/4 HP Female, 1/4 HP Male.
Base model ADT260EX. Each configuration has its own Additel part number, shown as the SKU on your order.
Accessories
9811Ex-X 110V/220V external power adapter
9704Ex Chargeable Li-ion battery
9021 Test leads
9040 Hanging strap with magnet
9052Ex Ex USB Cable type A to type C
ISO 17025 accredited calibration certificate
Additel 260Ex Intrinsically Safe Multichannel Reference Recorder
Up to 8 measurement channels
Intrinsically safe
Field switchable pressure module
Pressure accuracy to 0.02% FS
Temperature RTD accuracy to 0.01% RDG + 0.005% FS
Data logging with real-time graphical trending
Supports hydrostatic testing
Color touchscreen display
Built-in barometer
Optional RTD probes available
Bluetooth and USB communication
Communicates with the Additel Link mobile app
ISO 17025 accredited calibration with data included
Overview
The Additel 260Ex puts pressure, temperature, barometric, and electrical measurement into one intrinsically safe handheld (ATEX and IECEx certified, Ex ia IIC T4 Ga) with eight channel configurations: a field-switchable internal pressure module, a user-calibratable barometer, two external module inputs, a synthesized differential pressure channel, two RTD channels supporting 2, 3, or 4 wire sensors, and an electrical channel measuring current, voltage, frequency, pulse, or switch with built-in loop power.
The onboard recorder logs multiple parameters at once with trend curves and statistical feedback, storing up to 10 million readings at intervals from 0.1 s to 9,999 s. That logging depth plus the intrinsic safety rating make it a strong fit for pipeline work: hydrostatic testing, air leak testing, pump station inlet and outlet checks, safety valve testing, wellhead pressure testing, and routine calibration of pressure devices in hazardous gas environments.
Available configurations. 32 pressure ranges. Process Connection: 1/4 BSP, 1/2 BSP, M20x1.5, 1/4 NPT, 1/2 NPT.
Base model ADT260EX. Each configuration has its own Additel part number, shown as the SKU on your order.
Accessories
9811Ex-X 110V/220V external power adapter
9704Ex Chargeable Li-ion battery
9021 Test leads
9040 Hanging strap with magnet
9052Ex Ex USB Cable type A to type C
ISO 17025 accredited calibration certificate
Additel 260Ex Intrinsically Safe Multichannel Reference Recorder
Up to 8 measurement channels
Intrinsically safe
Field switchable pressure module
Pressure accuracy to 0.02% FS
Temperature RTD accuracy to 0.01% RDG + 0.005% FS
Data logging with real-time graphical trending
Supports hydrostatic testing
Color touchscreen display
Built-in barometer
Optional RTD probes available
Bluetooth and USB communication
Communicates with the Additel Link mobile app
ISO 17025 accredited calibration with data included
Overview
The Additel 260Ex puts pressure, temperature, barometric, and electrical measurement into one intrinsically safe handheld (ATEX and IECEx certified, Ex ia IIC T4 Ga) with eight channel configurations: a field-switchable internal pressure module, a user-calibratable barometer, two external module inputs, a synthesized differential pressure channel, two RTD channels supporting 2, 3, or 4 wire sensors, and an electrical channel measuring current, voltage, frequency, pulse, or switch with built-in loop power.
The onboard recorder logs multiple parameters at once with trend curves and statistical feedback, storing up to 10 million readings at intervals from 0.1 s to 9,999 s. That logging depth plus the intrinsic safety rating make it a strong fit for pipeline work: hydrostatic testing, air leak testing, pump station inlet and outlet checks, safety valve testing, wellhead pressure testing, and routine calibration of pressure devices in hazardous gas environments.
Available configurations. Range: BP. Process Connection: 1/4 BSP, 1/2 BSP, M20x1.5, 1/4 NPT, 1/2 NPT.
Base model ADT260EX. Each configuration has its own Additel part number, shown as the SKU on your order.
Accessories
9811Ex-X 110V/220V external power adapter
9704Ex Chargeable Li-ion battery
9021 Test leads
9040 Hanging strap with magnet
9052Ex Ex USB Cable type A to type C
ISO 17025 accredited calibration certificate
Additel 158Ex Intrinsically Safe Digital Pressure Module
Pressure ranges to 60,000 psi (4,200 bar)
Pressure measurement accuracy of 0.02% FS
ATEX certified intrinsically safe when used with ADT260Ex and ADT273Ex handhelds
Fully temperature compensated accuracy
Field switchable: swap modules without tools
Every silicon sensor aged, tested, and screened before assembly
ISO 17025 accredited calibration with data included
Overview
The Additel 158Ex series gives the ADT273Ex and ADT260Ex handhelds their measurement reach. Each field-switchable module carries a screened silicon pressure sensor with full temperature compensation, so a technician can carry one handheld and a pocket of modules instead of a case of gauges. Intrinsic safety certification applies when the module is paired with the Ex handhelds, keeping the system rated for hazardous gas environments.
Part Number: ADT158EX-BP-N2.
Accessories
ISO 17025 accredited Calibration Certificate
Additel 158Ex Intrinsically Safe Digital Pressure Module
Pressure ranges to 60,000 psi (4,200 bar)
Pressure measurement accuracy of 0.02% FS
ATEX certified intrinsically safe when used with ADT260Ex and ADT273Ex handhelds
Fully temperature compensated accuracy
Field switchable: swap modules without tools
Every silicon sensor aged, tested, and screened before assembly
ISO 17025 accredited calibration with data included
Overview
The Additel 158Ex series gives the ADT273Ex and ADT260Ex handhelds their measurement reach. Each field-switchable module carries a screened silicon pressure sensor with full temperature compensation, so a technician can carry one handheld and a pocket of modules instead of a case of gauges. Intrinsic safety certification applies when the module is paired with the Ex handhelds, keeping the system rated for hazardous gas environments.
Part Number: ADT158EX-BP-N.
Accessories
ISO 17025 accredited Calibration Certificate
Additel 158Ex Intrinsically Safe Digital Pressure Module
Pressure ranges to 60,000 psi (4,200 bar)
Pressure measurement accuracy of 0.02% FS
ATEX certified intrinsically safe when used with ADT260Ex and ADT273Ex handhelds
Fully temperature compensated accuracy
Field switchable: swap modules without tools
Every silicon sensor aged, tested, and screened before assembly
ISO 17025 accredited calibration with data included
Overview
The Additel 158Ex series gives the ADT273Ex and ADT260Ex handhelds their measurement reach. Each field-switchable module carries a screened silicon pressure sensor with full temperature compensation, so a technician can carry one handheld and a pocket of modules instead of a case of gauges. Intrinsic safety certification applies when the module is paired with the Ex handhelds, keeping the system rated for hazardous gas environments.
Part Number: ADT158EX-BP-M.
Accessories
ISO 17025 accredited Calibration Certificate
Additel 158Ex Intrinsically Safe Digital Pressure Module
Pressure ranges to 60,000 psi (4,200 bar)
Pressure measurement accuracy of 0.02% FS
ATEX certified intrinsically safe when used with ADT260Ex and ADT273Ex handhelds
Fully temperature compensated accuracy
Field switchable: swap modules without tools
Every silicon sensor aged, tested, and screened before assembly
ISO 17025 accredited calibration with data included
Overview
The Additel 158Ex series gives the ADT273Ex and ADT260Ex handhelds their measurement reach. Each field-switchable module carries a screened silicon pressure sensor with full temperature compensation, so a technician can carry one handheld and a pocket of modules instead of a case of gauges. Intrinsic safety certification applies when the module is paired with the Ex handhelds, keeping the system rated for hazardous gas environments.
Part Number: ADT158EX-BP-B2.
Accessories
ISO 17025 accredited Calibration Certificate
Additel 158Ex Intrinsically Safe Digital Pressure Module
Pressure ranges to 60,000 psi (4,200 bar)
Pressure measurement accuracy of 0.02% FS
ATEX certified intrinsically safe when used with ADT260Ex and ADT273Ex handhelds
Fully temperature compensated accuracy
Field switchable: swap modules without tools
Every silicon sensor aged, tested, and screened before assembly
ISO 17025 accredited calibration with data included
Overview
The Additel 158Ex series gives the ADT273Ex and ADT260Ex handhelds their measurement reach. Each field-switchable module carries a screened silicon pressure sensor with full temperature compensation, so a technician can carry one handheld and a pocket of modules instead of a case of gauges. Intrinsic safety certification applies when the module is paired with the Ex handhelds, keeping the system rated for hazardous gas environments.
Part Number: ADT158EX-BP-B.
Accessories
ISO 17025 accredited Calibration Certificate
Additel 158Ex Intrinsically Safe Digital Pressure Module
Pressure ranges to 60,000 psi (4,200 bar)
Pressure measurement accuracy of 0.02% FS
ATEX certified intrinsically safe when used with ADT260Ex and ADT273Ex handhelds
Fully temperature compensated accuracy
Field switchable: swap modules without tools
Every silicon sensor aged, tested, and screened before assembly
ISO 17025 accredited calibration with data included
Overview
The Additel 158Ex series gives the ADT273Ex and ADT260Ex handhelds their measurement reach. Each field-switchable module carries a screened silicon pressure sensor with full temperature compensation, so a technician can carry one handheld and a pocket of modules instead of a case of gauges. Intrinsic safety certification applies when the module is paired with the Ex handhelds, keeping the system rated for hazardous gas environments.
Available configurations. Accuracy: 0.02% FS. Range: V15 bar, V15 psi. Process Connection: 1/4 BSP, 1/2 BSP, M20x1.5, 1/4 NPT, 1/2 NPT.
Base model ADT158EX. Each configuration has its own Additel part number, shown as the SKU on your order.
Accessories
Accessories
ISO 17025 accredited Calibration Certificate
Additel 158Ex Intrinsically Safe Digital Pressure Module
Pressure ranges to 60,000 psi (4,200 bar)
Pressure measurement accuracy of 0.02% FS
ATEX certified intrinsically safe when used with ADT260Ex and ADT273Ex handhelds
Fully temperature compensated accuracy
Field switchable: swap modules without tools
Every silicon sensor aged, tested, and screened before assembly
ISO 17025 accredited calibration with data included
Overview
The Additel 158Ex series gives the ADT273Ex and ADT260Ex handhelds their measurement reach. Each field-switchable module carries a screened silicon pressure sensor with full temperature compensation, so a technician can carry one handheld and a pocket of modules instead of a case of gauges. Intrinsic safety certification applies when the module is paired with the Ex handhelds, keeping the system rated for hazardous gas environments.
Available configurations. Accuracy: 0.02% FS, 0.05% FS, 0.1% FS. 52 pressure ranges. Process Connection: 1/4 BSP, 1/2 BSP, M20x1.5, 1/4 NPT, 1/2 NPT, 1/4 HP Female, 1/4 HP Male.
Base model ADT158EX. Each configuration has its own Additel part number, shown as the SKU on your order.
Accessories
ISO 17025 accredited Calibration Certificate
Additel 158Ex Intrinsically Safe Digital Pressure Module
Pressure ranges to 60,000 psi (4,200 bar)
Pressure measurement accuracy of 0.02% FS
ATEX certified intrinsically safe when used with ADT260Ex and ADT273Ex handhelds
Fully temperature compensated accuracy
Field switchable: swap modules without tools
Every silicon sensor aged, tested, and screened before assembly
ISO 17025 accredited calibration with data included
Overview
The Additel 158Ex series gives the ADT273Ex and ADT260Ex handhelds their measurement reach. Each field-switchable module carries a screened silicon pressure sensor with full temperature compensation, so a technician can carry one handheld and a pocket of modules instead of a case of gauges. Intrinsic safety certification applies when the module is paired with the Ex handhelds, keeping the system rated for hazardous gas environments.
Available configurations. Accuracy: 0.02% FS, 0.05% FS. 32 pressure ranges. Process Connection: 1/4 BSP, 1/2 BSP, M20x1.5, 1/4 NPT, 1/2 NPT.
Base model ADT158EX. Each configuration has its own Additel part number, shown as the SKU on your order.
Accessories
ISO 17025 accredited Calibration Certificate
Additel ADT155 Digital Pressure Module.
Base model ADT155. Each configuration has its own Additel part number, shown as the SKU on your order.
Available configurations. Accuracy: 0.01% FS, 0.02% FS, 0.05% FS, 0.1% FS, 0.2% FS. 28 pressure ranges.
Additel 151 Pressure Module for ADT7XX Controllers
Interchangeable modules for Additel 773, 783, and 793 pressure controllers
Higher pressure modules cover two separate ranges, each with its own calibration
Three accuracy levels: 0.02% FS, 0.01% FS, and 0.01% of reading
Overview
Additel's 151 pressure modules are designed for flexibility: they swap in and out of the ADT7XX controller line as workloads change, so one controller chassis covers many ranges. Higher pressure modules span two ranges with individual calibrations for each, stretching what a single module can do. Choose the accuracy grade that fits the work, from 0.02% FS to 0.01% of reading.
Part Number: ADT151-BPH.
Accessories
ISO 17025 accredited calibration certificate
Additel 151 Pressure Module for ADT7XX Controllers
Interchangeable modules for Additel 773, 783, and 793 pressure controllers
Higher pressure modules cover two separate ranges, each with its own calibration
Three accuracy levels: 0.02% FS, 0.01% FS, and 0.01% of reading
Overview
Additel's 151 pressure modules are designed for flexibility: they swap in and out of the ADT7XX controller line as workloads change, so one controller chassis covers many ranges. Higher pressure modules span two ranges with individual calibrations for each, stretching what a single module can do. Choose the accuracy grade that fits the work, from 0.02% FS to 0.01% of reading.
Part Number: ADT151-BP.
Accessories
ISO 17025 accredited Calibration Certificate
Additel 151 Pressure Module for ADT7XX Controllers
Interchangeable modules for Additel 773, 783, and 793 pressure controllers
Higher pressure modules cover two separate ranges, each with its own calibration
Three accuracy levels: 0.02% FS, 0.01% FS, and 0.01% of reading
Overview
Additel's 151 pressure modules are designed for flexibility: they swap in and out of the ADT7XX controller line as workloads change, so one controller chassis covers many ranges. Higher pressure modules span two ranges with individual calibrations for each, stretching what a single module can do. Choose the accuracy grade that fits the work, from 0.02% FS to 0.01% of reading.
Available configurations. Accuracy: 0.01% FS, 0.01% RD, 0.02% FS, 0.05% FS. 51 pressure ranges.
Base model ADT151. Each configuration has its own Additel part number, shown as the SKU on your order.
Accessories
ISO 17025 accredited Calibration Certificate

Additel 226 Multifunction Process Calibrator
Sources, simulates, and measures pressure, temperature, and electrical signals
Built-in barometer
Intrinsically safe model available (ADT226Ex)
Large smartphone-style color touchscreen
USB Type-C and Bluetooth communication, IP67 rated
High voltage measurement to 300V AC with true RMS meter capability
Dual channel pressure module ports
High static differential pressure measurement to 0.002% FS
ISO 17025 accredited calibration with data included
Overview
The Additel 226 packs sourcing, simulation, and measurement of pressure, temperature, and electrical signals into one portable process calibrator with an intuitive color touchscreen. It is the cost-effective member of Additel's multifunction calibrator series, and the ATEX certified ADT226Ex version extends the same capability into hazardous environments. Dual pressure module ports accept Additel's external modules, and the built-in barometer supports gauge and absolute measurement.
Part Number: ADT226P.
Accessories
110V/220V external power adapter
110V/220V external power adapter
Chargeable Li-ion battery
Chargeable Li-ion battery
Test leads 1 set
Right angle test leads
Pressure module connection cable
USB Cable type A to type C
USB Cable type A to type C
Hanging strap with magnet
Multimeter Test Hook, Flexible Electronic
Probe
Small Multimeter Test Hooks 1 set
ISO 17025 accredited calibration certificate
Download Datasheet (PDF)
The 226P is the panel mount configuration of this calibrator, designed for fixed installation.