Thermo Fisher
Scientific Orion 3
Provisional entry — research in progress
This page was generated automatically from cited public sources and hasn't completed the full research pass yet. Every specification shown carries its source; more detail is added as research completes.
The Thermo Scientific Orion 3-Star is a benchtop/portable meter for pH and conductivity measurements, featuring a backlit LCD, multiple calibration options, and data logging. The Orion 3-Star Plus pH meter offers pH range -2.000 to 19.999, resolution 0.1/0.01/0.001, and relative accuracy ±0.002. The Orion 3-Star Benchtop Conductivity Meter provides conductivity accuracy ±0.5% FS 1 digit and temperature accuracy ±0.1°C.[1][2]
How it works
The Orion 3 series includes meters that function as pH meters, conductivity meters, or combined units, depending on the specific configuration.[1][2]
pH meters in the Orion 3 series measure pH over a range of -2.000 to 19.999 with a resolution as fine as 0.001 and a relative accuracy of ±0.002.[1]
The pH meters also measure millivolts over a range of ±1999.9 with a resolution of 0.1 and an accuracy of ±0.2 or 0.05%, whichever is greater.[1]
Conductivity meters in the Orion 3 series accept either two- or four-cell probes and meet U.S. Pharmacopoeia (USP) requirements.[2]
The Orion 3 meters include temperature measurement capability from -5 to 105 °C with a resolution of 0.1 °C up to 99.9 °C and an accuracy of ±0.1 °C.[1]
The meters feature a backlit LCD display, data logging for up to 1000 points with time and date stamp, and an RS232 port for data download.[1]
Applications
The Orion 3 series pH meters are suited for pH measurement in water, media, beverages, and process water.[1]
What do the numbers mean?
Power & electrical1
Optics & imaging5
Performance8
Control & software1
Configuration & options14
Vintage & configurations
Documented models & variants
| Designation | Generation | Vintage | Changes | Source |
|---|---|---|---|---|
| Orion 3-Star Plus pH Meter | — | — | pH meter variant with additional features such as SMART STABILITY and SMART AVERAGING, calibration up to 5 points, and data logging. | instrumart.com[1] |
| Orion 3-Star Benchtop Conductivity Meter | — | — | Conductivity meter variant, accepts two- or four-cell probes, meets USP requirements. | scinteck.com[2] |
| Orion 3-Star Portable Conductivity Meter | — | — | Portable version of the conductivity meter, waterproof IP67, runs on batteries. | instrumenthive.com[3] |
What does it need to run?
Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.
- Power (benchtop)Universal power supply[1]
Where are the manuals?
Generated from public-source data on file. Enter your email to access — nothing is published; details are routed privately.
Not publicly documented
Field notes
No research found yet — worked with this tool? Share what you know.
Frequently asked questions
Not publicly documented
The following facts about the Scientific Orion 3 are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the Scientific Orion 3 are on record.
Answerable by: OEM historical records or a trade-press announcement
The control-system platform and OS era of the Scientific Orion 3 are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the Scientific Orion 3 are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the Scientific Orion 3 is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No publicly documented compatible parts, consumables, or accessories for the Scientific Orion 3 are on record.
Answerable by: an OEM parts catalog or a service engineer
No research found yet — worked with this tool? Share what you know.
Sources & citations
Sources (4)Every fact above is drawn from these public sources
- [1]instrumart.com — instrumart.cominstrumart.com
- [2]scinteck.com — scinteck.comscinteck.com
- [3]instrumenthive.com — instrumenthive.cominstrumenthive.com
- [4]Equipment inventory listing
Last updated Sep 27, 2026.
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