User`s manual

December 2003
3-28 Programming Site Data
Selecting Error Handling
The first setting, ERROR, asks you to select how the flowmeter
will handle the analog outputs in the event of a fault condition.
Use the appropriate feature key to select one of the following:
• HOLD - which holds the last good reading
• LOW - which forces the reading low (0 mA or 4 mA)
• HIGH - which forces the reading high (20 mA)
The next prompt asks you to set the zero cutoff. Near “zero” flow,
the TransPort may have fluctuating readings due to small offsets
(caused by such things as thermal drift in the fluid). The zero
cutoff allows you to force the analog output reading to zero when
there is such a minimal amount of flow. You can set it anywhere
from 0 to 0.30 m/sec (0 to 1 ft/sec).
To set the zero cutoff:
1. Use the numeric keys to enter the zero cutoff.
2. Press [ENT].
Setting Input Parameters
If you chose to measure energy, you can program information
regarding the analog temperature inputs with the IN1 [F2] and
IN2 [F3] keys.
The TransPort can have up to two active or fixed temperature
inputs. On each input, you should select ACTVE if you are using
factory-supplied temperature sensors. Select FIXED if the fluid
temperature remains constant and if no temperature sensors are
being used.
The following prompts ask you to enter which type of input you
are using for the supply(inlet) and return (outlet). If you choose to
use a fixed input, the TransPort will also ask you to enter the
desired temperature. If you choose to use an active input, the
TransPort will ask you to enter two calibration points — base and
full —for both the supply and the return.
If you are using an active temperature input, the two active inputs
must be connected to the analog input/output port as described on
page 2-3.