42 | Operation
Thermo Fisher Scientific CryoExtra CE8100 Series
5. Perform the hot gas bypass sensor calibration
procedure.
6. Following calibration, reinstall the bypass sensor using
new PTFE thread tape, ensure sensor wires are
connected, reinstall plumbing shroud or rear panel and
reconnect the LN
2
supply source.
Hot Gas Sensor Single Point
Calibration
1.
Press “SETUP”
Controller will prompt for a
password. A flashing cursor will
make it clear which digit is being
changed. Use the “
” keys to
scroll to the appropriate number. Press “ENTER” to advance
the cursor to the next position.
2.
Press “ENTER”
The display will read “Temperature
Menus”.
3.
Press “SETUP”
Until the display reads “Add-on
Menus”.
4.
Press “ENTER”
The display will read “Battery
Status”.
5.
Press “SETUP”
Until the display reads “Hot Gas
Bypass Menus”.
6.
Press “ENTER”
The display will read “Hot Gas
Bypass”.
7.
Press “SETUP”
Until the display reads “Bypass
Probe Calibration”.
8.
Press “ENTER”
The display will read “Calibration
Type”. Use the “
” keys to
set as “SINGLE POINT”.
9.
Press “ENTER”
The display will read “Bypass
Calibration”. Submerge the
sensing end of the bypass probe in
LN
2
.
10.
Press “ENTER”
The display will read “Wait for
Bypass Temp to stabilize”. Wait for
the displayed temp reading to
stabilize while the probe is
submerged in liquid.
11.
Press “ENTER”
The display will read “Bypass
Probe single point calibration
complete”.
Hot Gas Sensor Two Point Calibration
1.
Press “SETUP”
Controller will prompt for a
password. A flashing cursor will
make it clear which digit is being
changed. Use the “
” keys
to scroll to the appropriate number. Press “ENTER” to
advance the cursor to the next position.
2.
Press “ENTER”
The display will read “Temperature
Menus”.
3.
Press “SETUP”
Until the display reads “Add-on
Menus”.
4.
Press “ENTER”
The display will read “Battery
Status”.
5.
Press “SETUP”
Until the display reads “Hot Gas
Bypass Menus”.
6.
Press “ENTER”
The display will read “Hot Gas
Bypass”.
7.
Press “SETUP”
Until the display reads “Bypass
Probe Calibration”.
Higher User Level
Required use
to
ENTER Password 0000
Press ENTER for
Temperature Menus or
press SETUP for next
menu
Press ENTER for Add-
on menus or press
SETUP for next menu
Battery Status
On AC Power
Press ENTER to Hot
Gas Bypass menus or
press SETUP for next
menu
Hot Gas Bypass
ENABLED
use
to adjust
Press ENTER for
Bypass Probe
Calibration or press
SETUP for next menu
Calibration Type
SINGLE- POINT
Use
to adjust
Press ENTER for next
menu
Bypass Calibration
Place Bypass Probe in
LN
2
and press ENTER
Wait for Bypass Temp to
stabilize then press
ENTER Bypass Temp -
195.8ºC
Bypass Probe Single
Point Calibration
complete
Higher User Level
Required use
to
ENTER Password 0000
Press ENTER for
Temperature Menus or
press SETUP for next
menu
Press ENTER for Add-
on menus or press
SETUP for next menu
Battery Status
On AC Power
Press ENTER to Hot
Gas Bypass menus or
press SETUP for next
menu
Hot Gas Bypass
ENABLED Use
to
adjust Press ENTER to
save
Press ENTER for
Bypass Probe
Calibration or press
SETUP for next menu
