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8.3 Low flow shut-off:
(XX.X%) Mode #6
Default 2.0%
The low flow shut-off setting allows a preset point in % of
flow to be set that the operator would like the Z-200 to stop
operating. This allows thecontroller to sense low flow
conditions that might exist in the pipeline where operation of
the Z-200 controller is not wanted. When flow again
increases above this point the Z-200 will again resume
operation.
To set the low flow shut-off:
1. Set the mode switch to postion #6.
2. Set the data switches to the desired % flow XX.X%.
Ex: 2% = 02.0
3. Depress the enter switch to load the value into memory.
NOTE: the green LED will flash if entry is accepted; the red
LED will flash if not accepted.
8.4 Zero calibration:
Mode #4
(1.00VDC @ 0% of metered flow)
The zero calibration adjustment is used to calibrate the
Z-200 controller for 0% of metered flow in the pipeline
(1 VDC). The Z-200 controller is calibrated at the factory for
0% of flow to directly correspond to 1.00VDC at the flow
input terminals #4, #5.
To set zero calibration:
1. Set the mode switch to position #4.
2. Apply 1.00VDC to the terminal strip terminal #4 (+signal
input); terminal #5 (-signal input) (if a DPT is being used,
output from the transmitter should be 1.00VDC @ 0" ( 0 cm)
differential pressure).
3. Depress the enter switch to load the zero setting into
memory.
NOTE: the green LED will flash if entry is accepted; the red
LED will flash if not accepted.
8. Sampler Set-Up
Mutual
System
Approved
Factory
Mutual
System
Approved
Factory