Operation and Maintenance Manual (DTR) iSWAY
®
Set of products
Version 1.8 of 2.2021
116
Step 5.
Attach inspection panel (2) by securing them with the yoke joints (8).
14.12.
P-MAC(F) pressure sensor
P-MAC and P-MACF are a digital differential pressure converter equipped with one differential
pressure sensor and a connector for power supply and transmission via FireBUS® protocol
channel. The P-MAC converter is obsolete and is being replaced by P-MACF converter.
The built-in internal microprocessor system performs linearity corrections taking into account,
among other things, the operating temperature and the characteristics introduced during
calibration. The high accuracy and stability of the measurement is ensured by the use of high-end
calibration devices and a long ageing process of the device components. The converter is designed
for measuring air pressure with a low degree of contamination.
The MAC-FC pressure regulator has a built-in pressure sensor. When a sensor from the MAC-FC
is used for a measuring strip or to measure the compressor in a duct, it may be necessary to equip
iSWAY with an additional P-MAC(F) sensor.
For details, see DTR of the P-MAC and P-MACF pressure sensor. If the SAP fire input is not used,
the input terminals must be shorted with a 4k7 resistor or configured in the program as unused
so that they do not cause a line failure condition.
IP54 protection class for standard P-MAC(F) finish. On request IP65 protection class can be
delivered.
