The primary way to minimize power consumption is to reduce the publish rate.
- LCD (Liquid Crystal Display)
- PowerSave mode
Disable the LCD after installation is complete if it is not required during normal operation. It is neither necessary nor sufficient to physically remove the LCD; it must be disabled through configuration in order to save power. From AMS Device Manager, select the wireless network where the transmitter is connected, right-click the transmitter and select.
Leave the LCD installed even if it is disabled to provide valuable diagnostic information. To view the LCD, remove the front cover and press the DIAG button. This wakes the device and displays current information. This can be beneficial for taking a quick reading and to aid in troubleshooting.
The front electronics end cap (the cap covering the LCD) is certified for Class I, Division I in appropriate gas environments (check the nameplate on the device for details).
Exposing the electronics to a production environment can allow particulates, moisture, and other airborne chemicals to enter into the device, which could lead to contamination and potential product performance issues. In all cases, whenever opening the front end cap, be sure to seal it completely afterwards by tightening until the black O-ring is no longer visible. For an illustration on how to properly seal the end cap, see Figure 2.
PowerSave mode is available in CSI 9420 devices that are Rev. 3 or later and it enables the device to make measurements less frequently, thereby conserving power. This is ideal when either power module life is more critical than the acquisition rate or when changes in vibration are only expected to occur over extended periods of time.
You can configure the settings for the PowerSave mode in AMS Machinery Manager (MHM Access Control must first be enabled) and in AMS Device Manager. The specific field is referred to as PowerSave Skip Multiplier. It is the number of times the transmitter skips data acquisitions between updates to the gateway.
At any point, the effective acquisition rate for the CSI 9420 is defined as:
Effective Acquisition Rate = (Update Rate) x (PowerSave Skip Multiplier)
Valid settings for the PowerSave Skip Multiplier range from 1X to 24X. In order to extend power module life, it should only be combined with a long update rate such as 60 minutes (54 minutes may be optimal for older versions of the CSI 9420). When this value is set to 1X, the CSI 9420 acquires a new reading at the update rate. A PowerSave Skip Multiplier of 2X combined with a 60-minute update rate results in a new acquisition every 120 minutes (every two hours). Similarly, a PowerSave Skip Multiplier of 24X with a 60-minute update rate results in a new acquisition every 1440 minutes (once per day).