Max Machinery 272-5X8 BIDIRECTIONAL TRANSMITTER (210_240 SERIES FLOW METERS) - Manual (Page 7)

Transmitters calibrated at the factory with a flow meter are shipped with a calibration sheet
and will not require further adjustment. Transmitters shipped alone will have to be phased to
the flow meter and wet calibrated.
Grounding Switches: S2-1: This switch connects circuit common to the transmitter case
through two back to back 15 µF @ 20V capacitors. S2-2: This switch connects common and
case ground directly together.
By using either S2-1 or S2-2 the effects of electrical noise on the transmitter can be reduced.
Excessive electrical noise can result in a zero offset of the output signal and a reduction of
accuracy. It is good practice to have a circuit directly connected to ground at one point. This
will probably be at the indicator or receiving end of the signal.
By activating S2-1, electrical noise between the case and the circuitry of the transmitter can
be considerably reduced, without causing ground loop problems. If the system is not ground-
ed at the indicator or if the flow meter is not physically grounded through its plumbing, use
S2-2. To activate either switch, depress the side of the switch that is numbered.
272-500-350 © 1996 (Rev. 8/00) Max Machinery, Inc. Page 7
USER OPTIONS AND ADJUSTMENTS
Amphenol Connectors (See above) are use on Transmitter Models 272-5X5, 5X7 & 5X8.
Discontinued