The AiM ACC3 is a compact Analog to CAN converter that can manage up to 4 analog inputs.
Standard Version for AiM loggers only: 
X08ACC3AP4050 ACC3 - 4AN 719 - CAN 50 cm
Open version compatible with other brands; 
X08ACC3OAP4200    ACC3 Open - 4AN  719 - CAN 200 cm FW