Max Machinery 272-5X8 BIDIRECTIONAL TRANSMITTER (210_240 SERIES FLOW METERS) - Manual (Page 8)

USER OPTIONS AND ADJUSTMENTS
(PCA Drawings)
Information for 272-5X5 transmitters:
Page 8 272-500-350 © 1996 (Rev. 8/00) Max Machinery, Inc.
Output Voltage Span Adjustments: These adjustments are used to match the specific flow
meter and flow range to provide the optimum output signal; and to make the indicator read in
engineering units if required.
Range Switch: This switch changes the output voltage by steps of 2.15 to 1. It is used to set the
output voltage to the approximate value desired.
Fine Gain Adjustment: This is a 20 turn potentiometer that is used to precisely adjust the out-
put voltage of the Model 272. The adjustment range is 2.5 to 1.
Reverse Gain Trimmer: Sets the output voltage in reverse flow to equal the voltage at the same
forward flow rate.
Any full scale voltage can be used. One volt, two volts or 8.888 will work just as well as
10.000. If the Model 272 is operating a digital voltmeter directly, the span can be adjusted to
make the voltmeter read directly in engineering units. In such a case, some RC damping will be
required.
Green Ground (A)
Black Common (B)
Red +15V (C)
White Signal (D)
Blue -15V (F)
Removable Connector
Amphenol Connector
(Std. on 272-515)
Ripple Indicator LED
Ripple Adjustment Sensitivity
(CW = More Sensitive)
(See Grounding Options Below)
S2-1 Filter
S2-2 Ground
Fine Gain Trimmer 2.5:1
Output Overrange LED
Range Switch
2.15:1
6 Steps
Stator Adjustment Screw
Discontinued