Hach Water Information Management Solution (WIMS)TM utilizes variables to store information. We define a variable as any data point you want to keep track of over a specific time frame, each time frame has an available number of time slots per day, as explained below.
There are three main types of variables:
- Parameter
- numeric; which can contain MDL characters among others
- Text Parameter
- A string based text container
- Calculated Variable
- This is a variable whose contents may be text or numeric, depending on the equation used
Tip: the Hach WIMS Math Toolbox contains an equation to set a calculated variable to a constant value
Each Variable type can be set to record data in any of the available time frames:
| Daily |
1 slot per day
also intended for any time interval larger than a day (i.e. weekly, etc.) |
| 4 Hours |
6 per daily period |
| Hourly |
24 per daily period |
| 30 Minute |
48 per daily period |
| 15 Minute |
96 per daily period |
| 5 Minute |
288 per daily period |
| Minute (1 Minute) |
1440 per daily period |
Advanced Users:
Each variable's options, settings, description and other information are stored in the VARDESC table of the facility's Hach WIMS database. Each time frame described above then has a table associated with it for the storage of data (i.e., Daily data is stored in DATATBL and Hourly data is stored in a table called DATADDH).