Meriam M4 Series Precision Calibrator Data Logger Manual - Manual (Page 38)

ZM4 Instruction Manual 9R87-B June 2012
38
Applications (continued)
If you are using a DN or DI (Differential Pressure Sensor) the high pressure
port (P1) is teed into the pressure source and transmitter high side (H) and
low pressure port is vented to atmosphere. If you are using a GI or CI
(Gauge Sensor) there is only one pressure connection.
In addition to reading gauge pressure the M4 can also be used to measure
pressure drop across a pressurized system. Examples include orifice plates,
pitot tubes, filters, or valves. A push to read, three valve, or five valve
manifold is recommended to avoid damage to the sensor.