Figure 4-44. pH Deadband Of 1
RH High Alarm
You can set alarm value to the highest measurable RH percentage by using
custom key board entry. For example, you can only set up to 98% for RH high
alarm.
RH Low Alarm
You can set alarm value to the lowest measurable RH percentage by using
custom key board entry. For example, you can only set as low as 2% for RH low
alarm.
RH Deadband
RH dead band should always be a positive number. RH dead band is useful
to create high and low alarm hysteresis for RH. The following are examples of
deadband settings for RH/Temp transmitters:
1. High alarm state - If you set the RH deadband to 5% and the high alarm value
to 90%, the device will be in a high alarm state (red LED blinks 2 times every
2 seconds) when the RH measurement reaches 90% or above. The device will
stay in the alarm state until the RH measurement reaches 85% or below (“high
alarm value – deadband value”).
2. Low alarm state - If you set the RH deadband to 5% and the low alarm value
to 20%, the device will be in a low alarm state (red LED blinks 2 times every
2 seconds) when the RH measurement reaches 20% or below. The device will
stay in the alarm state until the RH measurement reaches 25% or above (“low
alarm value + deadband value”).
Software Instructions (iOS)
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