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Brand: Additel
Additel ADT226 Multifunction Documenting Process Calibrator
Description
A handheld calibrator that covers pressure, temperature and electrical work in one case
The Additel ADT226 is a multifunction documenting process calibrator that sources, simulates and measures electrical signals, temperature sensors and pressure from a single 0.7 kg handheld. A technician checking a 4-20 mA transmitter, a thermocouple loop and a pressure switch on the same shift can do all three without swapping instruments. The datasheet describes a smartphone-like touchscreen, USB Type-C and Bluetooth communication, a built-in barometer and an IP67 enclosure with a 1 metre drop test.
The ADT226 sits below the ADT227 in Additel’s multifunction range. The ADT226 datasheet covers two versions, the standard unit and the intrinsically safe ADT226Ex, and the ordering table also lists a panel-mount ADT226P. The manual is shared with the ADT227, which adds HART communication, so check the model label before assuming a HART function.
What the datasheet highlights
- Electrical accuracy of 0.015% of reading plus 0.005% of full scale, with true RMS voltage and a 300 V AC / DC high-voltage input on the non-Ex unit.
- Dual-channel pressure module ports, with a high static differential pressure mode that reaches 0.002% FS using two sensors.
- Built-in apps: leak test, safety valve test (10 readings per second to capture the release point), analog transmitter calibration, unit converter, thermal calculator and snapshots.
- Wiring diagram guide, intelligent alarm messages and a self-test routine for troubleshooting in the field.
- Removable Li-ion battery with up to 12 hours typical run time and Bluetooth range of 20 m unobstructed.
Technical specification
| Parameter | Specification |
|---|---|
| Models | ADT226, ADT226Ex (intrinsically safe), ADT226P (panel mount) |
| Voltage source (non-Ex) | -150 to 150 mV, -1.5 to 1.5 V, -15 to 15 V; 0.015% RDG + 15 uV on the mV range |
| Current source | 0 to 25 mA, 0.5 uA resolution, 0.015% RDG + 1.2 uA (0.02% for Ex) |
| Resistance source | 0 to 400 ohm and 0 to 4000 ohm, 0.015% RDG + 20 mohm / 200 mohm |
| Frequency source | 0.01 Hz to 50 kHz square wave, 0.005% RDG |
| Loop power | 24 V (non-Ex, up to 30 mA); 22 V +/-10% (Ex, up to 25 mA) |
| Voltage measure | +/-300 mV and +/-30 V, 0.015% RDG + 15 uV / 1.5 mV |
| High voltage (non-Ex) | +/-300 V DC (0.05% RDG + 30 mV); 300 V AC true RMS 40 to 500 Hz (0.5% RDG + 150 mV); IEC61010 300V CAT II |
| Current measure | +/-30 mA, 0.1 uA resolution, 0.015% RDG + 1.5 uA |
| Resistance measure | 0 to 400 ohm and 0 to 4000 ohm, 4-wire; add 10 mohm for 3-wire, 50 mohm for 2-wire |
| Thermocouple types | S, R, B, K, N, E, J, T, C, D, G, L, U, plus GOST L(XK), A-1, A-2, A-3, M(MK) |
| Type K accuracy | 0.18 C from -100 to 600 C (external cold junction); internal CJC +/-0.2 C |
| RTD types | PT10 to PT1000 (385, 391, 3916, 3926), Cu, Ni and Russian types, -200 to 850 C for Pt |
| PT100(385) accuracy | 0.13 C (-200 to 200 C), 0.21 C (200 to 600 C), 0.27 C (600 to 850 C), 4-wire |
| Pressure | Two module ports for ADT161 series, -15 psi to 60,000 psi; barometer accuracy 55 Pa |
| Display | Capacitive touchscreen; datasheet lists 4.4 in 640 x 480 colour and 5.0 in 480 x 800 TFT LCD for the two versions |
| Operating / storage temperature | -10 to 50 C and -30 to 70 C (Ex: -20 to 50 C operating) |
| Protection and drop test | IP67, 1 m drop test; humidity under 95% non-condensing; altitude to 3000 m |
| Size and weight | 177 x 105 x 52 mm (6.97 x 4.13 x 2.04 in); 0.7 kg (Ex: 0.75 kg) |
| Battery | 6600 mAh 23.8 Wh Li-ion, about 12 h; Ex pack 4000 mAh 14.4 Wh, about 35 h |
| Communication | Isolated USB Type-C, Bluetooth BLE |
| Intrinsic safety (Ex) | ATEX and IECEx certified, Ex ia IIC T4 Ga as printed in the datasheet |
| Warranty and certificate | 3 years; ISO 17025 accredited calibration with data included |
Choosing the right version and options
The model code is short. ADT226 is the standard calibrator, ADT226Ex the intrinsically safe version and ADT226P the panel-mount variant. The Ex version trades some features for safety: it offers 0 to 10.5 V voltage source, a fixed 50% duty cycle frequency output, no high-voltage input and a lower 22 V loop supply. Pressure measurement is always through a separate ADT161 or ADT161Ex digital module, so decide on the range and accuracy of those modules at the same time.
Check the temperature range too. Full specification is guaranteed between 10 and 30 C on the standard unit and between -10 and 50 C on the Ex unit, with a 10 minute warm-up before the specified performance is reached.
Working with it in the field
The manual’s safety section is short but strict: use only the correct measurement category probes and cables, never use the non-Ex version in an explosive, steam or dust environment, check the housing for damage before use, and charge the battery when the low-battery warning appears because readings can become abnormal. Charge only with the Additel adapter and battery pack. The battery can be charged outside the unit, which helps where spare packs are rotated on shift.
Short-circuit zeroing is provided for current and voltage channels, supported to 1% FS, and pressure channels can be zeroed when vented. For a leak test, connect the calibrator and the pressure device in a gas circuit and set the test time in the app. When the source is a HART transmitter circuit, remember that this model does not provide the HART communicator function of the ADT227.
Where it earns its place in Oman and the GCC
Instrument shops at refineries, gas plants and desalination sites use handheld calibrators for loop checks before shutdowns, while field technicians need something that survives dust, sun and the occasional drop. The IP67 case and sunlight-readable display suit open-air plant work, and the Ex version is aimed at oil and gas platforms, refineries and petrochemical plants according to Additel.
Accessories and related items
- Included: power adapter 9811-X, Li-ion battery 9704, test leads 9023, pressure module cable 9060, USB cable 9052, magnetic hanging strap 9040 and a multimeter probe and hook set.
- Optional: ADT161 and ADT161Ex pressure modules, ADT129 differential pressure manifold, current output cable 9061, 250 ohm HART resistor adapter 9082, thermocouple cable kit 9080 and easy-press adapter 9081, carrying case 9919 and soft case 9918-SC, ACal task software 9530-BASIC.
Datasheet and quotation
The Additel datasheet is attached to this page. Tell us the version (standard or Ex), the pressure ranges you need and your site rules, and we will prepare a quotation. More instruments are listed in our portable test and measurement category. Please confirm the exact configuration before ordering.
Datasheets & Documents
- Datasheet Additel ADT226 / ADT226Ex multifunction process calibrator datasheet (Rev 20261009) Download
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About brand
Additel designs portable pressure and temperature calibration equipment, from documenting process calibrators and automatic pressure controllers to digital pressure gauges, hydraulic pumps and dry well calibrators. The company is headquartered in Brea, California, USA. Seven Star LLC, an independent supplier in Muscat, lists Additel instruments with their official datasheets for oil and gas, power, water and manufacturing maintenance teams in Oman and the GCC.
Additel calibration product groups
The range covers multifunction and HART documenting process calibrators, handheld and portable automatic pressure calibrators, hydraulic pressure calibrators, field device communicators, wireless and intrinsically safe digital pressure gauges, hand-operated test pumps, and dry well temperature calibrators from -40 C to 700 C. Each product page shows the datasheet figures only.
Selecting Additel equipment
Start from the pressure range, the medium (gas, oil or water), the accuracy class and whether results must be documented. For temperature work choose the dry well by range, stability and insert size. Send the details with a request for quotation and our team will confirm the exact model code before ordering.
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Frequently Asked Questions
What signals can the Additel ADT226 source and measure?
Per the datasheet it sources and simulates voltage, 0 to 25 mA current, resistance, frequency, pulses, thermocouples and RTDs, and measures voltage, current, resistance, frequency, pulse, switch state, thermocouples, RTDs and pressure through external modules. It also provides 24 V loop power.
Can the ADT226 measure mains-level voltage?
The non-Ex ADT226 includes a high-voltage input of up to 300 V DC and 300 V AC true RMS, with the datasheet quoting IEC61010 300V CAT II. The Ex version does not offer high-voltage measurement.
Which pressure modules connect to the ADT226?
It has two serial module ports and works with Additel 161 series digital pressure modules from -15 psi to 60,000 psi (-1 bar to 4,200 bar). Use ADT161Ex modules with the intrinsically safe ADT226Ex.
Is there an intrinsically safe version of the ADT226?
Yes. The ADT226Ex is listed as ATEX and IECEx certified, with the datasheet giving an Ex ia IIC T4 Ga rating. Confirm the certificate and your site classification before use in a hazardous area.
Does the ADT226 ship with a calibration certificate?
Yes. The datasheet lists an ISO 17025 accredited calibration certificate with data as included, along with a 3 year warranty.
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