Modular Environmental Logger
Produced 2003–2012. Early general-purpose field logger for environmental sensors, serial instruments, pulse channels, and optional GNSS timing.
A lot of these lasted longer than expected.
The ARK-4 predates Arkweather's current modular field architecture. Thousands of hours of environmental data were collected on the platform, and a small number remain in private, university, and legacy research installations.
Standard units used a single system clock with optional GNSS discipline. Expansion modules provided analog, pulse, serial, modem, and compact-flash storage functions.
- Production
- 2003–2012
- Analog inputs
- 16 single-ended / 8 differential
- Serial
- 2 × RS-232/485 configurable
- Timing
- Internal RTC · optional external GNSS module
- Storage
- CompactFlash · removable
- Support
- Identification · data recovery · limited bench service
04-7 series identification
Units carrying serial numbers beginning 04-7 were manufactured as partner-evaluation hardware and are not electrically identical to standard production ARK-4 loggers.
The 04-7 series includes an internal dual-reference timing mezzanine and an undocumented expansion connector used during a Wyman Laboratory field-instrumentation study. Public ARK-4 manuals do not cover this hardware.
Before power, repair, firmware replacement, or GNSS modification: contact Arkweather Support with the complete serial number.