General DM8252 User manual

DM8252/8252RS
USER’S MANUAL
HIGH RESOLUTION
DIGITAL MANOMETER
DM8252 DM8252RS
INCLUDES 4RUBBER
STOPPERS FOR DUCT
SMOKE DETECTORS
DM8252_8252RS_Manual_fin081109:Layout 1 9/23

INTRODUCTION
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DM8252_8252RS_Manual_fin081109:Layout 1 9/23

CONVERSION & RESOLUTION
1mbar=
1mbar=
Resolution
Inch of H2O
mbar
psi
bar
mm of H2O
0.01
0.004
0.1
0.001
1
0.401
0.0145
1
0.001
10.2
Meter has 5selectable units of
measure: InH2O, psi, mbar, bar,
mmH2O.
Please check tubingis not leaking
or damaged beforeusing.
MANOMETER QUICK START
Unscrew battery compartmenton
rear of instrumentand fit PP3(or
Equivalent)battery replace cover
and secure withscrew.
Press to switchthe instrument on.
Press to selectunit of pressure
measurement required. To zero by
pressing and holdfor three
seconds , theinstrument now reads
gauge pressure.
Press for differential pressure
measurement.
I
UNIT
HOLD
DIF
DIF
3
DM8252_8252RS_Manual_fin081109:Layout 1 9/23

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REC REC
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REL
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UNIT
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DM8252_8252RS_Manual_fin081109:Layout 1 9/23

4
3
10
12
1
5
9
8
7
6
11
15
14
2
13
HOLD REL DIF
DATALOGGER
REC AVG
MAX MIN BAT
CONTROLS AND INDICATORS
1.
2. "-" Minus pressure display.
3. MAX MIN pressure recorded.
4. REC starts recording modeand
displays max./min. pressure
recorded.
5. AVG Average records
6.
7.
8.
9. Pressure unitindication.
10.
11. DIF Differential pressure mode.
12. "+" Positive pressure connection.
13. "-" Negative pressure connection.
Primary Data Screendisplays
pressure value.
(N/A).
DC powerin Jack.
RS232 output port.
H/M/S 88:88:88 displays timefor
Hour / Minute/ Second.
BAT Battery low indicator.
inH2O psi mbar bar mmH2O
14. HOLD Freezes pressure reading.
15. REL (N/A)
Establish a relative zero for the
primary screen information.
5
DM8252_8252RS_Manual_fin081109:Layout 1 9/23

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I
AUTO POWER OFF
(SLEEP FUNCTION)
MODE OPTIONS
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6
DM8252_8252RS_Manual_fin081109:Layout 1 9/23

HOLD DIF
REC
UNIT
l

/
/
/
DISABLE SLEEP MODE
ZERO SETTING
SELECT UNIT / SKIP CAL.
HOLD
HOLD
Hold 2 sec.
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Fig. B
inH2O psi mbar b ar mmH2O
7
DM8252_8252RS_Manual_fin081109:Layout 1 9/23

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Fig. E
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inH2O psi mbar b ar mmH2O
inH2O psi mbar b ar mmH2O
inH2O psi mbar b ar mmH2O
inH2O psi mbar b ar mmH2O
8
DM8252_8252RS_Manual_fin081109:Layout 1 9/23

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9
DM8252_8252RS_Manual_fin081109:Layout 1 9/23

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MAINTENANCE
10
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DM8252_8252RS_Manual_fin081109:Layout 1 9/23