Flow Transducer Replacement - Thermo Scientific 49i Instruction Manual

Servicing

Flow Transducer Replacement

Flow Transducer
Replacement
7-36 Model 49i Instruction Manual
8. At the Pressure Sensor Cal screen, press
The Calibrate Pressure Span screen appears.
9. Wait at least 10 seconds for the ambient reading to stabilize, use
and
pressure, and press
10. Reconnect the instrument tubing to the pressure transducer.
11. Install the cover.
Use the following procedure to replace the flow transducer.
Equipment Required:
Flow transducer
Philips screwdriver
Wrench, 5/16-inch
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap must
be worn while handling any internal component.
1. Turn instrument OFF, unplug the power cord, and remove the cover.
2. Disconnect plumbing from the flow transducer.
3. Disconnect the flow transducer cable (FLOW A or FLOW B) from the
measurement interface board.
4. Loosen the retaining nuts (2) and remove the faulty flow transducer
from the mounting bracket.
to enter the known barometric
to save the pressure value.
to select Span.
Thermo Fisher Scientific