Quick Setup
Guide
Model 831
SETTINGS
TABLE
Function
Description
LOCATION
NUBER
Range
=
1
‐
999
HISTORY
Display
previous
samples
FREE
MEMORY
Display
percent
of
memory
available
or
clear
all
samples
FAVORITE
Pin
Favorite
PM
range
to
the
top
display
line
TIME
Display
/
set
time
DATE
Display
/
set
date
ABOUT
Model
Number
and
firmware
version
SERIAL
COMMANDS
Protocol
Summary:
38,400
Baud,
8
Data
bits,
No
Parity,
1
Stop
Bit
Commands
(CMD)
are
UPPER
or
lower
case
Commands
are
terminated
with
a
carriage
return
<CR>
To
view
setting
=
CMD
<CR>
To
change
setting
=
CMD
<SPACE>
<Value>
<CR>
CMD
Type
DESCRIPTION
?,H
Help
View
the
help
menu
1
Settings
View
the
settings
2
All
data
Returns
all
available
records.
3
New
data
Returns
all
records
since
last
‘2’
or
‘3’
command.
4
Last
data
Returns
the
last
record
or
last
n
records
(n
=
<Value>)
D
Date
Change
date.
Date
is
format
is
MM/DD/YY
T
Time
Change
time.
Time
format
is
HH:MM:SS
C
Clear
data
Displays
a
prompt
for
clearing
the
stored
unit
data.
S
Start
Start
a
sample
E
End
Ends
a
sample
(abort
the
sample,
no
data
record)
ID
Location
View
/
change
the
location
num
‐
ber.
Range
1
‐
999.
OP
Op
Status
Replies
OP
x,
where
x
is
“S”
Stopped
or
“R”
Running
RV
Revision
View
Software
Revision
SKx
y.yy
K
‐
Factors
View
/
change
K
‐
Factors.
x
=
1
‐
4
(PM1,
PM2.5,
PM4,
M10)
y
=
K
‐
Factor
value
Range
=
0.10
to
9.99
Met One Instruments Inc.
1600 Washington Blvd.
Grants Pass, OR 97526
541-471-7111
www.metone.com
831-9801 Rev. A
