Rate Alarm Settings 1 - Honeywell touchpoint Pro Operating Instructions Manual

MAN0923_Issue 3_04/15
15. Appendix 2 - Configurable
Parameter Reference Guide
LTEL = (TEN_MIN_TWA1 + TEN_MIN _TWA2 + ..........+ TEN_MIN _TWAN ) / LTELN
Where
LTEL
TEN_MIN_TWA1 = 1st Ten Minute TWA,
TEN_MIN_TWA2 = 2nd Ten Minute TWA
TEN_MIN_TWAN = Nth Ten Minute TWA
LTELN
Access Level: Engineer
Parameter Name
LTEL Alarm Enable
LTEL Alarm Level
LTEL Alarm Latch

15.1.13 Rate Alarm Settings 1

Note: The Rate of Change Alarm is set when a specific rate of rise (or fall; depending if the Rate Alarm
Trigger is set as Rising or Falling) is observed. The Alarm Level and the Alarm Interval can be configured. If
the Alarm Level = 10 %LEL and the Alarm Interval = 5 s, the Rate Alarm will be set if the concentration has
risen by 10 %LEL within 5 s.
The rate alarm is calculated from the displayed reading.
Note: If zero suppression is used it has the effect of sensitizing the rate alarm. It is recommended to set the
rate alarm to twice the suppression band value to avoid nuisance alarms.
Access Level: Engineer
Parameter Name
Rate Alarm Enable
Rate Alarm Level
Rate Alarm Trigger
Rate Alarm Latch
15.1.14 Rate Alarm Settings 2
Access Level: Engineer
Parameter Name
Rate Alarm Time Interval
= Long Term Exposure Limit TWA.
= Number of Ten Minute TWA Samples received in 8 hours
Default Setting
Disabled
10 %FSD
Latching
Default Setting
Disabled
5 %FSD
Rising
Latching
Default Setting Value Range
1 s 1 s to 30 s
Value Range
Enabled / Disabled
According to sensor range
Latching / Non-Latching
Value Range
Enable / Disable
According to sensor range
Rising / Falling
Non-Latching / Latching
Comment
Determines the Rate Alarm evaluation interval.
196
Touchpoint Pro
Operating Instructions