Sensor Mode (2.1.3.) - Siemens HydroRanger 200 HMI Operating Instructions Manual

8.6.1.3

Sensor mode (2.1.3.)

Sets the type of measurement required for the application.
Index
Options (mode)
Alters
Dual-Point Difference (DPD) and Dual-Point Average (DPA)
Single-point model use
For DPD or DPA, the unit requires either two transducers of the same type, or one
transducer and one mA input. If two transducers are used, all transducer parameters
become indexed, and a third level point is calculated.
● DPD (difference) = Point 1 - Point 2
● DPA (average) = (Point 1 + Point 2)/2. The calculated DPD or DPA is always based on
level measurements of Points 1 and 2.
For these operations any of three level points (Transducer 1, Transducer 2, or the calculated
point) can be used to trigger relays [Level source (2.8.1.2.) (Page 194)].
The points must be globally set to either Dual-Point Difference or Dual-Point Average, as
required. Point 3 becomes the calculated value as shown above. See Setting a rake control
(Page 132).
Dual-point model use
To set a dual-point device for DPD or DPA functions, Point 3 must be set to either Dual-Point
Difference or Dual-Point Average, as required. Points 1 and 2 cannot be set do Dual-Point
Difference or Dual-Point Average, but these points are used to calculate the value in Point 3.
The calculated DPA is always based on level measurements of Points 1 and 2.
This table shows the available functions:
Sensor Mode (2.1.3.)
HydroRanger 200 HMI
Operating Instructions, 06/2018, A5E36281317-AC
Single-point model
Global
Out of service
*Level
Space
*Distance
Dual-point difference
Dual-point average
Flow rate in open channel
Pump totalizer
Primary measuring device (2.13.2.) (Page 240)
Operation Index
1
2
3
Dual-point model
Transducer
how full the vessel is; default for dual-
point model
how empty the vessel is
distance from transducer to material;
default for single-point model
DPD
DPA
OCM
total pumped volume
Available options
*Level, Space, *Distance, Flow rate in open channel, Pump
Totalizer
*Level, Space, *Distance, Flow rate in open channel, Pump
Totalizer
Dual-Point Difference, Dual-Point Average
Parameter reference
8.6 Setup (2.)
163