Jenway 3540 - Manual (Page 41)

4.23 Alarm Point Settings…
A sub-menu for setting the high and low alarm points for each mode can be accessed
by pressing the down arrow in the Alarms Set Up menu to highlight Alarm Point
Settings… then press the Enter key for the following display…
High and Low alarm settings
High and Low alarm levels are available for Conductivity, TDS and Resistivity, these
are effective when the relevant mode is selected (use the up or down arrow when the
Cond tab is highlighted in the main measurement screen). Alarm levels for Salinity
measurements should be based on the equivalent conductivity value, this is displayed
with the Salinity reading. The adjustment of the High and Low alarm levels is similar
for each level and each mode so will be described once for the Conductivity Alarm
High level only.
Press the down arrow to highlight Cond Alarm High (mS) (or any other relevant alarm
level in the menu). Press the Enter key to display a data entry box, the box around
the least significant digit will be flashing. Use the up or down arrow keys to adjust this
digit to the required figure if necessary, or use the right or left arrow keys to select
other digits for adjustment with the up or down arrow keys. When all the digits are set
to display the required alarm level press the Enter key to accept this value. Use the
up or down arrow key to adjust other alarm settings as required or press the ESC key
to escape to other menu levels or return to the main measurement screen.
High alarm level set to 150mS
4.30
Conductivity Endpoint Set Up
All measurements made with electrochemical sensors are subject to a response time
for the sensor to equilibrate to the sample conditions and while the temperature
sensor compensates for temperature differences between samples and ambient
conditions. This response time will vary dependant on the sample, sensor(s) and
measurement conditions, a special algorithm can automatically determine when the
reading has reached a stable condition and the endpoint is reached. The Endpoint