Instruction Manual

Copyright © 2006 CiDRA Corporation Page 10-13
20675-01 Rev 02
10.1.3 Input Config
The Input Config menu is used when optional external sensors (for
example a pressure or temperature transducer) are powered by and
input to the transmitter. The transmitter does not have the capability
to display or transmit these sensor values.
Note: When these sensor
inputs are used the ’
Temperature Sel’ and ‘Pressure Sel’ menu
options under the ‘
Basic Config’ menu must be used to designate
which sensor input is used for a particular measurement.
• Sensor 1 & 2
‘Units’ allows for setting the sensor units to ‘None’ (not used) ‘F’
(temperature degrees F), ‘
C’ (temperature degrees C), ‘Barg’
(pressure in Bars gauge), ‘
kPag’ (pressure in kilo Pascals gauge),
‘
PSIg’ (pressure in pounds per square inch gauge). Note: If an
“absolute” scaled pressure transducer is used select ‘
None’ for units.
‘
Scale’ allows for setting the range of the input in units of measure
(‘
Units’) per mA.
‘
Offset’ allows for inputting an offset in mA due to a non-zero milliamp
sensor output range. The offset is calculated by the equation y=mx+b
where: y is a value within the transducer range, m is the transducer
range divided by the milliamp output range, x is the milliamp output at
the ‘y’ value, and b is the offset.
For example, a 0-100 psig pressure transducer with a 4-20 mA output
will have a –25 offset.
y=mx+b
100 psi = (100psi / 16mA) x (20mA) +b
100 psi – 125 psi = b
-25 psi = b = ‘Offset’
10.1.4 Customize Menu
The Customize menu is used to configure the transmitter to meet user
needs for local display of flow parameters.
• Display
The display parameters are used to customize the displayed units and
appearance of the display.
‘
Line 1’ and ‘Line 2’ adjustments set the outputs of those lines to
‘
Totalizer’, ’Flow Rate %’, ‘Flow Rate’, ‘GVF’, ’SOS’, and ‘Blank’.
‘
Contrast’ is used to adjust the screen appearance due to lighting
conditions. Normally this is set to 170.
• Sensor Setup
‘State’ is used to turn individual sensors ‘On’ or ‘Off’. Normal
operating condition is with all sensors set to ‘
On’.