The CDM-A108 and CDM-A116 are analog input modules that allows easy expansion of Campbell Scientific datalogging systems.
They features a 24-bit, analog-to-digital converter and a low-noise, analog front-end to provide superior analog measurements. This module also supports period average measurements and includes both current and voltage excitation channels.
The CDM-A108 has 8 x differential input while the CDM-116 has 16 x differential input channels.
They both provide 2 x excitation channels, a 12 V and a switched 12 V port for powering peripherals and two switched 5 V ports for peripheral control.
All new units come with a calibration certificate.
All CDM modules are compatible with the CR6 & CR100X datalogger without any additional hardware. To use them with a CR1000, CR800, CR850, or CR3000 datalogger, a SC-CPI (datalogger-to-CPI interface) must also be used.
±(0.04% of reading + offset) 0° to 40°C ±(0.06% of reading + offset) -40° to +70°C ±(0.08% of reading + offset) -55° to +85°C
Power Requirements: 9.6 to 32 Vdc voltage
Operating Temperature:-40° to +70°C (standard);-55° to +85°C (extended)
Dimensions: 20.3 x 12.7 x 5.1 cm
Typical Current Drain: Sleep <1 mA; Active 1 Hz Scan 2 mA (estimated for one single-ended measurement)
Voltage Excitation: ±5 V (@ 50 mA)
Current Excitation: ±2.5 mA (±5 V compliance voltage)