Our Komeg KMH-225L
Temperature & Humidity
chamber, surplus to requirements.
We are A-Elektronik d.o.o., an R&D and electronics manufacturer based in Zagreb. We bought this Komeg KMH-225L new in 2021 for a specific embedded-electronics qualification programme. The programme is closed, the chamber has only seen about ten working days of use, and it is now surplus to our needs. Operating range − 45 °C to +150 °C, humidity 20 – 98 % RH, fully operational, re-verified in our own lab in April 2026 — every parameter PASS.
Bought new for a project that closed. Practically unused.
A-Elektronik specified and purchased this KOMEG KMH-225L brand new in 2021 to qualify a generation of embedded electronics for combined temperature and humidity stress per IEC 60068 and MIL-STD-810. The programme it served has since concluded and our remaining work is handled by a smaller bench-top unit, so the KMH-225L has stayed parked in our Zagreb laboratory ever since — powered up only for periodic maintenance runs and a fresh, full-envelope verification we performed in April 2026.
Because we are the original and only owner, you are buying directly from the engineering team that specified, installed and ran the chamber. There is no broker margin, no “as-is, no questions answered” caveat, and no auction-house buyer’s premium. We can answer technical questions about how it was used, walk you through the controller, run a live cycle in front of you on site in Zagreb, and help arrange palletised EU road freight with the same logistics partner we use for our own production shipments.
For reference, an equivalent new Komeg unit lists ex-works China at € 9 000 – € 13 000 and lands in the EU — with duty, freight, commissioning and a four-to-six-month wait — well above that. Our unit is on lockable casters, ready to roll out of the lab, and has a complete dossier including the original Komeg datasheet, our internal April 2026 PASS report and high-resolution photography.
Sold directly by A-Elektronik d.o.o.
A-Elektronik was founded in Zagreb in 2006. We research, develop and manufacture embedded electronics, real-time systems, machine-learning radio-signal processing and laser-based sensing. We currently hold 15 international technology patents, including our patented pulsed-laser beam detector with sun and temperature compensation, and a method for noise suppression in miniaturised radio-frequency detectors.
Alongside R&D we run an in-house SMT assembly line (Samsung SM421F placer, Asscon vapour-phase soldering, Mirtec MV-3L AOI), with capacity for more than 10 000 PCBs per year. Our processes are certified to ISO 9001, and our SMT operators are certified to the IPC-A-610electronics assembly standard. The same care goes into how we have looked after this chamber.
This is therefore not a dealer offer. You are buying surplus equipment directly from the engineering team that originally specified it for our own qualification work — with full traceability, the original documentation, and a real human on the other end of the phone.
Visit a-elektronik.hrRe-verified in our own R&D lab in April 2026.
| # | Parameter tested | Set point | Measured | Result |
|---|---|---|---|---|
| 1 | High temperature reach | +150 °C | +150.1 °C | PASS |
| 2 | Heating ramp +25 → +150 °C | ≤ 30 min | 27 min | PASS |
| 3 | Low temperature reach | −45 °C | −45.0 °C | PASS |
| 4 | Cooling ramp +25 → −45 °C | ≤ 110 min | 100 min | PASS |
| 5 | Humidity at 60 °C / 70 % RH | 70 % RH ± 5 | 69.7 % RH | PASS |
| 6 | Temperature stability ± | ± 0.5 °C | ± 0.3 °C | PASS |
| 7 | Controller, alarms, safety chain | Functional | Functional | PASS |
Functional verification performed by A-Elektronik’s engineering team on 8 April 2026 using the chamber’s own PT100 sensor and the KM-5166 controller log. Full PDF report is available above. Independent third-party calibration (Croatian accredited metrology lab) can be arranged on request as a paid add-on.
Technical specifications.
- Temperature range
- −45 °C to +150 °C
- Temperature deviation
- ≤ ± 2.0 °C
- Temperature fluctuation
- ± 0.5 °C
- Temperature uniformity
- ≤ ± 2.0 °C
- Heating rate (avg.)
- ~ 3 °C / min (+25 → +150)
- Cooling rate (avg.)
- ~ 1 °C / min (+25 → −45)
- Humidity range
- 20 % – 98 % RH
- Humidity deviation
- ± 3 % RH (>75), ± 5 % RH (≤75)
- Humidity uniformity
- ± 3 % RH
- Workspace volume
- 225 L (700 × 700 × 480 mm)
- Exterior (W × H × D)
- ≈ 900 × 1735 × 1505 mm
- Net weight
- ≈ 300 kg
- Inner wall
- SUS304 stainless steel
- External body
- Carbon steel, powder-coated
- Insulation
- Rigid PU foam + glass fibre
- Door
- Single, left-opening, heated frame
- Observation window
- 350 × 500 mm, heated multi-layer glass
- Casters
- 4 × lockable mobile casters
- Cable port
- Ø 50 mm, both sides, sealed
- Sample shelves
- 2 × SUS304, 30 kg / shelf
- Cooling system
- Mechanical compression, air-cooled
- Compressor
- Tecumseh / Copeland hermetic
- Refrigerant
- R404A (CFC-free)
- Expansion / dryer / valves
- Danfoss
- Condenser / evaporator
- Yongqiang fin-type, multi-stage
- Humidifier
- Stainless boiler, SSR controlled
- Water supply
- Manual fill, demineralised water
- Drain
- Bottom condensate drain
- Controller
- KOMEG KM-5166 PID, 7" TFT touch
- Sensor
- PT100 Class A, Ø4.8 mm SUS304
- Programs
- 269 groups · 13 450 segments · 50 steps
- Logging / data
- USB export · curve & history
- Interfaces
- RS-232 · RS-485 · Ethernet (LAN)
- Power supply
- AC 3∼ 380 V / 50 Hz / N+PE
- Switchgear
- Schneider, Carlo Gavazzi, Omron, Autonics
- Safety
- E-stop, over-temp, phase, no-water, leakage
- Compliance
- Per Komeg literature: CE, ISO, SGS
European brand-name components inside.
Although the chamber is manufactured in China, every critical refrigeration, switching and control component is sourced from established European or Japanese suppliers. This is the same hardware specification used in the Komeg KMH-R series sold worldwide and is the reason the unit holds line-of-class climate performance.
As-is photographs, taken in our Zagreb lab.
Pick-up & transport.
A-Elektronik facility, Bani, Zagreb, Croatia (EU). Ground-level loading dock. The unit is on lockable casters and rolls onto a tail-lift truck without disassembly.
Ex-works (EXW) Zagreb is the default. We can quote crating and palletised EU road freight (FCA / DAP) via our usual logistics partner on request — typical EU delivery 3 – 7 working days.
Buyer is welcome to visit our Zagreb lab and witness a live functional run before payment. Payment by SEPA bank transfer; full Croatian R1 invoice issued by A-Elektronik d.o.o., EU VAT-reverse-charge applicable for valid VAT-IDs.
Talk to the engineers who own it.
Your enquiry comes straight to A-Elektronik’s engineering team — not a broker, not a reseller. Tell us briefly what you want to test in the chamber and we can confirm whether the − 45 / +150 °C envelope, the 700 × 700 × 480 mm workspace and the 30 kg / shelf load are a fit for your samples. We respond to every serious enquiry, typically within one working day.