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16 Instruction 3015-4256
DIAGNOS – Enters the diagnostic function. Press the Up Arrow
Keypad button to toggle between the monitor’s two diagnostic screens.
Refer to Working with the DIAGNOS Function (Page 21).
SILENCE – Used to enter a length of time for which the internal
audible alarm and the external alarm are turned OFF when the front
panel SILENCE button is pressed. The factory default is 300 seconds
(5 minutes). If the cause of the alarm/fault has not been cleared at the
end of this time period, the internal audible alarm and the external alarm
device are reactivated. Use the Keypad to enter the desired time period,
and then press ENTER to save that value and return to the previous
screen.
ZONETEMP – Used to enter the temperature of the area being
monitored in °C, thus giving a more accurate ppm reading. The factory
default is 25°C. Use the Keypad to enter the desired temperature, and
then press ENTER to save that value and return to the previous screen.
SQUELCH – Sets a value of between 0.0 and 99.9 ppm that prevents
the display of measurements below that value. Factory default is 0 ppm.
For example, if the squelch setting is set to 50 ppm, then the monitor will
not display measurements that are below that value. Use the Keypad to
enter the desired value, and then press ENTER to save that value and
return to the previous screen.
CAL – Used to change a calibration factor for a specific gas. This
function is to be used ONLY with instructions from a Bacharach Service
Center. Factory default is 1.000.
LOG INT – Sets the interval at which measurements are logged to
memory from 1 to 9999 minutes. Factory default is 10 minutes. Note that
the logged measurements can be viewed using the PPM LOG function.
Use the Keypad to enter the desired value, and then press ENTER to
save that value and return to the previous screen.
LOOP – Use to adjust the loop factor of the 4–20 mA current loop.
Factory default is 0.016 mA per ppm, which provides an output range of
0 ppm (4 mA) to 1,000 ppm (20 mA). Use the Keypad to set the desired
loop factor, and then press ENTER to save that value and return to the
previous screen.
To facilitate loop zero and span checking, note that when the LOOP
function is selected the loop output is set to 20 mA, and upon exiting this
function the loop output is set to 4 mA.
T
EMP AT ZONE =
25 de
g
C
S
QUELCH BELOW
50.0
pp
m
R
134A CALFACTOR
1.000
L
OG INTERVAL IS
0010 min
E
DIT LOOP FACTOR
0.016 ma/PPM
S
ILENCE TIMEOUT
0300 sec
4
.265
0
0v <0000>
2
4.5cD 14.00
p
si
0.4ppm 0.00
0
.00002au 4.260v