Measurement Interface Board - Thermo Scientific 49i Instruction Manual

System Description
Electronics
Internal Connectors
Measurement Interface

Measurement Interface Board

8-6 Model 49i Instruction Manual
• I/O connector with Power Fail Relay, 16 Digital Inputs, and 6 Analog
Voltage Outputs.
Internal connectors include:
• Function key panel and Display
• Measurement Interface Board Data
• I/O Expansion Board Data
• Digital Output Board
• AC distribution
The measurement interface board serves as a central connection area for all
measurement electronics in the instrument. It contains power supplies and
Board
interface circuitry for sensors and control devices in the measurement
system. It sends status data to the motherboard and receives control signals
from the motherboard.
Connectors located on the measurement interface board include:
Connectors
• Data communication with the motherboard
• 24V and 120VAC power supply inputs
• Fan and solenoid outputs
• 120VAC outputs for the pump
• Flow and pressure sensors inputs
• Detector board inputs - CH A and CH B
• Optical bench temperature thermistor
• Photometer lamp power supply
Thermo Fisher Scientific