There are two ways this can happen. (1) You are accidentally telling the DataMate that you have a metric (or English) system, or (2) the installation information in the DataMate is incorrect.
Case 1: When you start a survey using the DataMate, you choose an installation and then you must step through the installation parameters by pressing the Enter key. If you press the down arrow by mistake, you’ll change the value of that parameter. For example, if you press the down arrow at the Units prompt, you’ll change the value from English to metric or vice versa. It seems logical that you could press the down arrow to scroll through the readings, but you can’t. Always press the Enter key to step through the parameters.
Case 2: You should check that installation information in the DataMate is correct. Switch on the DataMate. Choose Read to display the Read menu. Then choose Installations. Scroll through the list of installations and choose the one that is causing problems. Then step through the installation parameters until you see Units. Set this to English or metric, depending on the type of probe that you have. Press Enter to see the next parameter, Ins Constant. Set this to 20000 for English probes or 25000 to metric probes. Also, check your DMM database to see that probe type and instrument constant are set properly for that installation.
Fixing Incorrectly Recorded Data: If you recorded an English probe with a metric setting in the DataMate, or you recorded a metric probe with an English setting in the DataMate, your data values are not correct. There are three solutions.
1. In DMM, edit each value in the affected survey.
2. In DMM, edit the
Apply a sensitivity correction in DigiPro.
3. Change the Probe Constant for that You can edit each value in the survey and keep , you can or you can change the instrument constant for each affected survey so that computed deviations and displacements will be correct. Here are instructions:
- Open the project database, choose the appropriate installation.
- Choose the appropriate survey and click the Edit Add button.
- Change the value in the “probe constant” field as follows: