Specifications

18-1
Section 18. Care and Maintenance
Temperature and humidity can affect the performance of the CR1000. The
internal lithium battery must be replaced periodically.
18.1 Temperature Range
The standard CR1000 is designed to operate reliably from -25 to +50°C (-40°C
to +85°C, optional) in non-condensing humidity.
18.2 Moisture Protection
When humidity tolerances are exceeded and condensation occurs, damage to
CR1000 electronics can result. Effective humidity control is the responsibility
of the user.
Internal CR1000 module moisture is controlled at the factory by sealing the
module with a packet of silica gel inside. The desiccant is replaced whenever
the CR1000 is repaired at Campbell Scientific. The module should not be
opened by the user except to replace the lithium coin cell providing back up
power to the clock and SRAM. Repeated disassembly of the CR1000 will
degrade the seal, leading to potential moisture problems.
Adequate desiccant should be placed in the instrumentation enclosure to
prevent corrosion on the CR1000 wiring panel.
18.3 Enclosures
Campbell Scientific offers environmental enclosures for housing a CR1000 and
peripherals. These enclosures are classified as NEMA 4X (watertight, dust-
tight, corrosion-resistant, indoor and outdoor use).