Specifications

Channel Master Operation Manual
page 28 Teledyne RD Instruments
j. The Channel Master should respond with the following message.
“Now close the unit and tighten the closeup hardware. After this, hit any
key to continue...”.
k. Remove any wedge between the housing and transducer head. Tighten
the bolts in small increments in a “cross” pattern until the split washer
flattens out, and then tighten each bolt ¼ turn more to compress the face
seal O-ring evenly. Tighten the bolts to the recommended torque value
of 4 Newton-meters (34.4 pound-force inches).
CAUTION. Apply equal pressure to the O-ring as you tighten the bolts. If
one bolt is tightened more then the others, the O-ring can become pinched
or torn. A damaged O-ring will cause the Channel Master to flood.
CAUTION. Do not over tighten the bolts that hold the transducer and
housing together. If you tighten too far, you can crack or break the plastic
housing. On the other hand, leaving the bolts too loose can cause the
system to flood. Tighten the hardware to the recommended torque
value.
NOTE. The recommended torque value for the housing M6 bolts is 4 Nm
(34.4 lbf in).
l. If the calibration was successful, the unit should respond with:
“SUCCESS: Close up calibration complete. Execute PC2 to verify.”
m. At the > prompt, type PC2 and press return. Verify that the pressure re-
ported by the PC2 Press (kPa) column is approximately +/- 0.050 kPa.
Temp(degC) Press(kPa) Press(m) Pitch(deg) Roll(deg)
/ 23.15 -0.009 -0.001 0.31 0.67
NOTE. After a few samples the pressure will begin to change as a result
of changes in ATM pressure or interior building pressure. Verify the test
results within the first 20 seconds.
n. At the > prompt, type CZ and press return. Verify the “going to sleep”
message is present.
o. Exit BBTalk and turn off power to the Channel Master.
8.5 Firmware Upgrades
The Channel Master contains two processors (three if the SDI-12 personal-
ity module is present), each with two firmware modules. When new firm-
ware is released, Teledyne RDI provides a firmware update package. The
package contains CMFlash, all the firmware modules, and a readme file. It
updates all out of date firmware to the latest version. The name of the up-
date package may be CMFRM!.EXE or the name may contain a version
number, such as CMFlash_v0203.exe.