Ametek 241CE II Operator's Manual page 106

Sub-Menu Item
HCLED n
WMWarn n
HCMWarn n
WTrg1 n
WTrg2 n
HCTrg1 n
HCTrg2 n
Scroll
I1Z
I1S
I2Z
I2S
4-20 | Model 241CE II Hydrocarbon Dewpoint Analyzer
Description
* Hydrocarbon mirror surface LED brightness level, where 'n' = the LED level. This level can be any
value between 0–4095, which represents a drive-current range of 0–50 mA. Do not adjust this value
unless instructed to do so by an AMETEK Service Representative.
Water mirror surface drift warning limit, derived from the Water-side mirror LED within the analyzer's
Measuring Cell. The value is displayed as a percent (%) of the change in the phototransistor signals
between two consecutive measuring cycles, where 'n' = the current percentage allowance.
WMWarn is used to adjust the "w Dirty Cell" status alarm setpoint. If the Water mirror surface be-
comes contaminated, the recorded phototransistor signal will change. The setpoint is used to specify
the allowable percentage change in the phototransistor signals between two consecutive measuring
cycles. When the difference between the phototransistor signal at the end of the Purging/Hold Stage
and the previously measured value is more than the warning setpoint percentage, the "w Dirty Cell"
SCode is displayed. The Purging/Hold Stage is also repeated. The default value for this warning
setpoint is 10 % (typical value for most applications).
Hydrocarbon mirror surface drift warning limit, derived from the Hydrocarbon-side mirror LED within
the analyzer's Measuring Cell. The value is displayed as a percent (%) of the change in the photo-
transistor signals between two consecutive measuring cycles, where 'n' = the current percentage
allowance.
HCMWarn is used to adjust the "w Dirty Cell" status alarm setpoint. If the Hydrocarbon mirror
surface becomes contaminated, the recorded phototransistor signal will change. The setpoint is used
to specify the allowable percentage change in the phototransistor signals between two consecutive
measuring cycles. When the difference between the phototransistor signal at the end of the Purging/
Hold Stage and the previously measured value is more than the warning setpoint percentage, the
"w Dirty Cell" SCode is displayed. The Purging/Hold Stage is also repeated. The default value for this
warning setpoint is 10 % (typical value for most applications).
* Water detection first (low) trigger level, derived from the Water-side phototransistor signal within the
analyzer's Measuring Cell, where 'n' = the current trigger level threshold. This variable allows you to
specify the low threshold of the increasing water phototransistor signal. Do not adjust this value un-
less instructed to do so by an AMETEK Service Representative.
* Water detection second (high) trigger level, derived from the Water-side phototransistor signal within
the analyzer's Measuring Cell, where 'n' = the current trigger level threshold. This variable allows you
to specify the high threshold of the increasing water phototransistor signal. Do not adjust this value
unless instructed to do so by an AMETEK Service Representative.
* Hydrocarbon detection first (low) trigger level, where 'n' = the current trigger level threshold. This
variable allows you to specify the low threshold of the increasing hydrocarbon phototransistor signal.
Do not adjust this value unless instructed to do so by an AMETEK Service Representative.
* Hydrocarbon detection second (high) trigger level, where 'n' = the current trigger level threshold.
This variable allows you to specify the high threshold of the increasing hydrocarbon phototransistor
signal. Do not adjust this value unless instructed to do so by an AMETEK Service Representa-
tive.
This parameter displays the duration each signal will pause on the RUN menu screen during the
auto-scroll (factory default = 4 seconds).
V/I Analog output #1 Zero calibration value, WDP (4.00 mA).
Note: This parameter will be displayed only if an external water signal is provided
and if the H2O DP:EXT option is enabled from the MonitorCFG menu.
V/I Analog output #1 Span calibration value, WDP (20.00 mA).
Note: This parameter will be displayed only if an external water signal is provided
and if the H2O DP:EXT option is enabled from the MonitorCFG menu.
V/I Analog output #2 Zero calibration value, HCDP (4.00 mA).
V/I Analog output #2 Span calibration value, HCDP (20.00 mA).