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No. 26
2H & 2HN Quick Reference Guide
SETUP
To
enter setup, press < D
> then < ENTER >
Press < D
> or <
Ñ
> then < ENTER > to select
function, then < D
> or < Ñ
> to change
L0
Run
L1 Audible Alarm (On/Off)
L2 0 Sample Time (5 to 120
seconds)
L3 100% Sample Time (5 to
120 seconds)
L4 Decimal Places (3
or 4)
L5 Internal Reference (Current
Selection Displayed)
L6 Hour Meter
L7 Factory Defaults
L8 Software Revision
L9 Bar graph (On/Off)
L10 Display Intensity
L11 Optic Option (Check at Start=0,
or every Zero=1)
L12 Zero Purge Time (0 to 120 seconds)
L13 100% Purge Time (0 to 120 seconds)
ALARM
(ON) or (OFF)
<
ALARM > Displays Status (On
or Off ), < D
> or < Ñ
> to change, < ENTER >
to exit
< ALARM > Pressed a second
time before < ENTER >, displays Set
Point, (0.010 by default) <
D > or < Ñ
> to change
< ENTER > Accept Alarm
Set Point. Displays On/Off status again, < D
> or < Ñ
> to change.
< ENTER > Accept status
and return to RUN mode. Alarm LED will remain
lit.
*Note:
Use L1 to turn the audible portion of the alarm On or Off.
INTERNAL
REFERENCE
Set
Selector Valve to CLEAR
< REF >
(Blinks)
< ENTER > Calibration reagent
( PAO or DOP ), also *
USER or * HIGH
Use < D
> or < Ñ
> to change
< ENTER > Displays ug/l
of concentration to be displayed as 100 when sampled
Use < D >
or < Ñ >
to change
<
ENTER > (O Blinks)
< ENTER > Checks Optics
(Settings L11=1) and Sets 0%
Ready for Testing
*
USER
is a stored sampled concentration saved by the user,
to be displayed as 100%.
*Note:
This value is stored in memory until a new value is sampled
and saved by the user.
To
set: After completing the setting 100%
procedure below, Press the REF button and
“USER ” will be displayed. Press <ENTER>,
0 will blink; turn the Selector Valve to CLEAR
, and press <ENTER>
*HIGH
allows sampling of concentrations above 130ug/l,
exceeding 200ug/l. This setting should only be used for sampling
quickly and sparingly, as such concentrations will adversely
affect the cleanliness of the optics
SETTING
100%
Connect Upstream Sample Line
& set Selector Valve set to UPSTREAM
<100> <100>
key LED flashes
<ENTER> Bar graph scans
.The unit averages 100% for a time defined by the L13 setting.
When the <0> LED
flashes, turn the Selector
Valve to Clear
<ENTER> Checks optics (if L11=1)
and sets 0%.
*Note:
This setting can be saved by pressing REF ,
<ENTER> , and resetting 0 ).
(See *USER
above)
Ready for Testing
OPTICS
and FLOW LED'S
OPTICS
LED:
GREEN- Optics
clean, Internal Reference within 5% of original value
ORANGE- Optics affected, Internal Reference
shifted to 5% to 10% of original value
RED- Optics compromised, Internal Reference
shifted by more than 10%. Do NOT rely on
Internal Reference.
*Note: The
unit can continue to be operated by using the SETTING
100% procedure above.
FLOW
LED:
GREEN-
Flow within 5% of 1 CFM
ORANGE- Flow within 5% to 10% of 1 CFM
RED- Flow is more than 10% above or
below 1 CFM
*Note: The
flow is factory established through 12' of sampling tubing.
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