Description
The Brainchild AI203 is an expandable analog input card for use with the Brainchild PR10, PR20, or PR30 paperless chart recorders. The card has 3 channel analog inputs. Each input is isolated from each other to avoid noise and to ensure stable measurement.
There are 4 rear expansion slots in the PR10 and PR20 and 16 rear expansion slots in the PR30.
AI203 Specifications:
Channels: 3 channels
Resolution: 24 bits
Sampling Rate: 10 times/ second (100milliseconds)
Maximum Rating:
- RTD input ±20V
- Thermocouple and Voltage input ± 50V
- mA input ±10V
Temperature Effect:
- ±0.1uV ±15PPM of reading for all inputs except mA
- ±30PPM of reading for mA input
Sensor Lead Resistance Effect:
- Thermocouple: 0.32PPM of reading/Ω
- 3-wire RTD: 2.6˚C/Ω of resistance difference of two leads (Based on °C measurement temperature for PT100)
- 2-wire RTD: 2.6˚C/Ω of resistance sum of two leads (Based on °C measurement temperature for PT100)
Burn-out Current: 10uA
Common Mode Rejection Ratio (CMRR): 120dB
Normal Mode Rejection Ratio (NMRR): 55dB
Isolation Breakdown Voltage between channels: 1500VAC min.
Sensor Break Detection:
- Sensor opened for TC, RTD and mV inputs
- Below 1 mA for 4-20mA input
- Below 0.25V for 1-5V inputs
- Not available for other inputs
Sensor Break Responding Time:
- Within 1 seconds for TC, RTD and mV inputs
- 0.1 second for 4-20 mA and 1-5V inputs