The ELS Detector can be operated in two modes; STANDBY or RUN, both of which are described over page:
To display the current mode and/or select a new mode, highlight the MODE function on the instrument display. The current mode will now be displayed on the screen. Using the arrow keys, scroll up or down until the desired option is displayed. The instrument acknowledges the command by displaying the mode of operation in the top-right corner of the screen.
The STANDBY mode is the “ground state” of the ELS detector, which is by default selected automatically after power-on (default can be changed using Power Mode, Power Mode). In STANDBY mode the heaters and light source are switched off, and the gas manifold valve is closed at power-on. The STANDBY mode gives the user a control platform in which to set up the operational parameters (gas flow, nebulizer, and evaporator temperatures) before switching the unit into RUN mode. The instrument will default to STANDBY mode should an error occur on the instrument.
Following a command or error, the instrument is switched from RUN to STANDBY mode. In this situation, the gas management system is invoked and the gas flow set to a minimum flow of 1.2 SLM for 15 min before the gas manifold valve is closed. This minimum “blanket” gas is STANDBY enough to nebulize and evacuate solvent should the instrument default to STANDBY mode with solvent still flowing.
CAUTION
Flooding the detector
If the instrument is left in STANDBY mode for longer than 15 min, gas flow to the unit is stopped to minimize gas usage.
The RUN mode is the detector’s operational mode. In this mode, the instrument is controlled at the set temperatures and gas flow, and the system is fully operational. During heating or cooling the instrument will display NOT READY to show that the system has not reached the set conditions. When the instrument has equilibrated, READY will be displayed and the instrument is ready for use.
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id: 4344592651