ABH-100-D
Dry-ice & ULT logger
ULT, logger outside
For ULT freezers and dry-ice shipper monitoring: the logger stays in ambient, a Class-A PT100 probe on a 3 m cable measures the cold.
Design visualization · 88.2 × 69.9 × 28.3 mm · probe pod 38.5 mm
ABH-100-D — every number a QA team asks for
Channel-level accuracy, memory depth in readings, enclosure geometry and the firmware trust chain — the full picture before you ask for the pilot.
| Product type | Offline · probe logger |
| Sensing channels | 3 (Probe temperature · Ambient T + RH) |
| Probe temperature | PRB-PT100-3W Class A · −50…+200 °C · ±0.15 °C at 0 °C |
| Ambient T + RH | SHT41 (logger lives outside the freezer) |
| Measurement accuracy | Probe element ±0.15 °C at 0 °C (PT100 Class A, IEC 60751) · channel ±0.62 °C uncalibrated → ±0.36 °C after 4-point factory calibration |
| Display & indication | LED status indicator (single red LED, blink codes: heartbeat flash = OK · fast blink = excursion · solid = fault) |
| Connectivity | Offline — no radio |
| Power | ER14505M AA Li-SOCl₂ 3.6 V · 2.0 Ah |
| Battery life | ≈4.6 yr (calculated, spec-compliant logging at firmware defaults; ≈3.3 yr worst-case) — MAX31865 RTD front-end needs ≥3.0 V — 3.6 V cell behind the buck |
| Memory | 16 MB W25Q128JV · 409,600 readings · separate never-erased audit region |
| Sample interval | 300 s default · 1 s minimum |
| Enclosure | 88.2 × 69.9 × 28.3 mm · probe pod 38.5 mm · Healthcare-grade disinfectant-resistant PC/ABS · UL94 V-0 · white |
| Ingress protection | IP65 (design target) |
| Mounting | Keyhole (2×) + bonded 10×2 mm magnets · M12 probe port in pod |
| Operating band | −40 to +70 °C (logger) · probe to −50 °C |
| Firmware | Signed .abhfw packages · dual-bank A/B · RSA-2048 · trial boot with automatic rollback · MQTT over TLS 1.2+ with per-device credentials · X.509 client certificates / mTLS on the roadmap |
| Factory identity | ABH-[model]-[YYWW]-[5-digit sequence] — factory identity written to the ID EEPROM |
| Probe port | M12 A-coded on the probe pod (J8) |
| Local indication | LED status indicator (single red LED, blink codes: heartbeat flash = OK · fast blink = excursion · solid = fault) |
The ABH line is at the design-frozen, pre-production stage: every enclosure has passed generated fit-check geometry (791/791 checks, 20/20 SKUs) and every battery-life, drop, thermal and IP figure shown is a calculated or simulated design estimate — measured values replace them as validation hardware runs. Regulatory marks above are the certification roadmap, not held certificates.
- Class-A PT100 accuracy at −80 °C — where NIST-traceable evidence actually gets questioned
- Logger stays at ambient: cells and display stay in their comfort zone
- Phenyl-silicone gasket option when the logger itself rides dry ice
- ULT freezers & dry iceLogger stays outside the freezer; a Class-A PT100 probe measures inside — accuracy where it matters.
- PRB-PT100-3W — PT100 immersion probePRB-PT100-3W-3M · PRB-PT100-3W-5M · PRB-PT100-3W-10M
- ABH-300 — Industrial multi-probe monitor
- ABH-100-D datasheetPDFFull specification, applications and probe options
- ABH range overviewAll 20 SKUs and the platform story
- Platform capability briefSoftware, compliance and architecture
Datasheets describe the current design release (ABH-PLATFORM 0.0.4). Battery-life and IP figures inside are calculated design estimates; measured values follow validation hardware.
One PCB, one firmware, one compliant record
One 80 × 50 mm 4-layer platform PCB — 146 parts, single-sided SMT — becomes 20 SKUs by BOM selection and a SKU record in the on-board ID EEPROM.
Signed .abhfw packages · dual-bank A/B · RSA-2048 · trial boot with automatic rollback
MQTT over TLS 1.2+ with per-device credentials · X.509 client certificates / mTLS on the roadmap
Plug an offline logger into a PC and it enumerates a FAT16 drive with README.TXT, DATA.CSV and an ECDSA P-256-signed REPORT.PDF — a self-verifying trip record.
Probe channel templates live in the ID EEPROM; the platform tracks NIST-traceable calibration certificates, due dates and reminders per probe.
Certification roadmap: EN 12830:2018 — temperature recorders · CE — RED / EMC / safety · FCC Part 15 · WHO PQS E006 — vaccine cold chain · IEC 61010-1 / IEC 62368-1 · UN 38.3 / IEC 62133-2 — cells & packs — targets, not held certificates.
Put the ABH-100-D to work
Book a demo and we'll scope a pilot around your sites — quantities, probes, alert rules and the reports your QA team will hand the inspector.