Standby Mode; Table 4-2: Status Of Internal Pneumatics During Standby Mode - Teledyne T700 Operation Manual

Overview of Operating Modes and Basic Operation

4.1. STANDBY MODE

Note

Table 4-2: Status of Internal Pneumatics During STANDBY Mode

CYL1 CYL2 CYL3
X X X
1
Only present if multiple cal gas MFC option is installed.
98
When the T700 Dynamic Dilution Calibrator is in standby mode, it is at rest. All
internal valves are closed except the diluent inlet valve. The mass flow controllers are
turned off. On units with O
subsystems are inactive.

The SETUP  GAS submenu is only available when the instrument is in STANDBY
mode.

Some functions under the SETUP  MORE  DIAG submenu, those which conflict
with accurate creation of calibration gas mixtures (e.g. ANALOG OUTPUT STEP
TEST) automatically place the calibrator into STANDBY mode when activated.

The MFC pressures are not monitored in standby mode since the MFCs are turned
OFF. This prevents erroneous MASS FLOW WARNING messages from
appearing.
The T700 calibrator should always be placed in STANDBY mode when not
needed to produce calibration gas. The last step of any calibration sequences
should always be the STANDY instruction.
Table 4-2 shows the status of the T700's various pneumatic components when the
calibrator is in STANDBY mode.
VALVES
(X = Closed; O = Open)
CYL4 PURGE DILUENT
X X O
In instruments with optional O
STANDBY mode so that the generator can continue to operate at its most efficient
temperature.
Teledyne API – Model T700 Dynamic Dilution Calibrator
generator and photometer options installed, these
3
O PHOT
3
GPT
1
GEN M/R
Reference
X X
Phase
generators installed, airflow is maintained during
3
MFCs
1
CAL1 CAL2 DILUENT
OFF OFF OFF
06873B DCN6388
PHOT
PUMP
OFF