Chapter 1. Programming Site Data
20 DigitalFlow™ DF868 Multipurpose Ultrasonic Liquid Flowmeter Programming Manual (2-Channel)
1.6.5 Entering Setup Data
The signal limits and response times for the Model DF868 are specified via the SETUP submenu. While following the
programming instructions, refer to the menu map in Figure 12 on page 99. The following four submenus are included
in this section:
• SIGNL - set the parameters related to the transducer signal
• AVRG - specify the response of the meter to step changes
• INIT - initialize all parameters to default values.
• ADVAN - activates options for KV/SS, temperature vs. viscosity, Multi K factors, Mass Flow, Code Length and Active
Tw Measurement.
Table 14 on page 28 lists default values and limits for SETUP parameters. Remember to record all programmed data
in Appendix B, Data Records.
1. To enter the Channel PROGRAM menu, press [F1] or [F2] (depending on the desired channel) at the User
Program prompt.
2. Enter the SETUP submenu by pressing [
and [F1] at the Channel PROGRAM prompt.
1.6.5.1 The SIGNL Option
Use this option to set the limits for the incoming signal and other parameters affecting the transducer signal. For
example, the programmed signal strength low limit may be used to determine the trigger point for an alarm.
CAUTION! The SIGNL default settings are suitable for most applications. Before changing any of these
parameters, consult the factory.
The signal options are different, depending on whether you have selected Transit-Time or TransFlection in the ACTIV
submenu. Only after consulting the factory, complete the following steps to enter the signal parameters.
1. Press [F1]=SIGNL to enter the SIGNL submenu.
• For Transit-Time mode, refer to Transit-Time SIGNL Options on the next page.
• For TransFlection mode, refer to TransFlection SIGNL Options on page 23.
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