Alicat M Series Mass Flow Meter - Manual (Page 66)

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Pin Number Function
1 Ground
2 Primary Analog Signal Output
3
Analog Tare (meters — when grounded)*
Analog Set-Point Input (controllers)*
4 Ground
5 Power Supply Common
6 Ground
7 Power Supply (+Vdc)
8 RS-232 Tx (send) / RS-485, A (-) [receive]
9 Ground
10 N/C
11 N/C
12 Secondary Analog Signal Output / fi xed 5.12Vdc*
13 N/C
14 N/C
15 RS-232 Rx (receive) / RS-485, A (+) [send]
Check your device’s calibration certifi cate and user manual for the actual electrical input/
output requirements, as all instruments are custom confi gured to some extent.
* Added to allow for full use of features on Alicat devices, may not be present on host wiring
NOTE: Pins 1, 4, 5, 6 and 9 are connected together inside of the device and are common
grounding points.
N/C = Not Connected/Open (can be used for custom pin assignments – please consult factory).
DB15A – Pin-Out “Aalborg XFM” Style
The following pin-out chart describes the safest and generally compatible arrangement when
connecting a non-Alicat DB15 wire to a DB15A equipped Alicat. Not all features may be
available between brands, but the common denominators are featured in our DB15 offerings,
along with some options for customization.
DB15 Pin-Outs
If your instrument was ordered with a DB15 connection,
be sure to check the Calibration Label on the device and
reference the appropriate pin-out diagram.
Male Connector Front View Female Connector Front View
8
15 12 9
2 5
8
15
12 9
2 5 3
3
7
7