CiDRA SONARtrac Quick Start User Manual

Page 19

arrow keys to enter the new value. This will result in a fixed
pressure being used for GVF calculations. If a Pressure
Transducer will be used to input process pressure into the
transmitter, it is not necessary to enter a pressure.

• Pressing

the

↓ key will next display ‘→Temperature’ on Line 2 and

the current process temperature setting on Line 4. Note: The units
are user selectable as degrees C or F. To change the Line 4 value
press ‘ENTER’ and use the arrow keys to enter the new value.
This will result in a fixed temperature being used for GVF
calculations. If a Temperature Transducer will be used to input
process temperature into the transmitter, it is not necessary to
enter a pressure.

• Pressing

the

↓ key will next display ‘→Pressure Sel’ on Line 2. If

an external pressure sensor will not be used to input pressure to
the transmitter, ‘Fixed’ appears on line 4. If set to ‘Fixed’ pressure
input, use the

↓ key to scroll to the next menu item. However, if an

external pressure sensor will be used to input pressure to the
transmitter press ‘ENTER’ and use the

↓ key to select either

‘Sensor #1’ or ‘Sensor #2’. (‘Sensor #1’ or ‘Sensor #2’ refers to
the sensor input the temperature transducer is wired to on the
terminal block in the transmitter enclosure.) If the Modbus input is
to be used to input pressure to the transmitter use the

↓ key to

select ‘Protocol’. Once the selection is made, press ‘ENTER’.

• Pressing

the

↓ key will next display ‘→Temperature Sel’ on Line 2.

If an external temperature sensor will not be used to input
temperature to the transmitter, ‘Fixed’ appears on line 4. If using
‘Fixed’ temperature input, use the

↓ key to scroll to the next menu

item. However, if an external temperature sensor will be used to
input pressure to the transmitter press ‘ENTER’ and use the

↓ key

to select either ‘Sensor #1’ or ‘Sensor #2’. (‘Sensor #1’ or ‘Sensor
#2’ refers to the sensor input the temperature transducer is wired
to on the terminal block within the transmitter box.) If the Modbus
input is to be used to input pressure to the transmitter use the

↓

key to select ‘Protocol’. Once the selection is made, press
‘ENTER’.

• Pressing

the

↓ key will next display ‘→Altitude’ on Line 2 and the

selected value above (or below) sea level on Line 4. To change
the Line 4 value press ‘ENTER’ and use the arrow keys to enter
the new value. Note: if an external pressure transducer that reads
pressure in ‘absolute’ value (e.g. PSIa, BARa, or KPaa) is used, an
altitude correction is not necessary.

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