MSA APOGEE P1, Инструкция по эксплуатации

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3-1
Chapter 3,
Start-Up
• The ZGARD S and DS Sensors are factory-calibrated and ready for immediate use.
• Once power is applied to the unit and a 30-second delay occurs, the normal green LED is solid ON
to indicate the sensor is operating properly.
Table 3-1. ZGARD S & DS Sensor Specifications
Operating Power 24 VAC/DC, 100 mA (250 mA for Combustible sensor),
50/60 Hz
Powered by a class 2 source
Communication Connection RS-485 APOGEE P1 2-wire network connection
Operating Features and Setup
ZGARD S Sensors
(4 to 20 mA and RS-485)
Sensor Output
The ZGARD S & DS APOGEE P1 Sensors
provide an identifiable digital signature recognized
by the Siemens digital network equipment.
SW2
àß
1 TEST FULL SCALE (100% OUTPUT)
àß
2 TEST HALF SCALE (50% OUTPUT)
àß
3 TEST ZERO SCALE (0% OUTPUT)
àß
4 CUT-OFF (ON/ OFF)
SW2
àß
1 TEST FULL SCALE (100% OUTPUT)
àß
2 TEST HALF SCALE (50% OUTPUT)
àß
3 TEST ZERO SCALE (0% OUTPUT)
àß
4 CUT-OFF (ON/ OFF)
ZGARD S Sensors, Output Test: Each sensor provides a
means of driving the output to 0%, 50% or 100% full-scale.
Respectively, when the onboard switch SW2 is tuned ON to
1 or 2 or 3, the sensor generates the selected output signal.
This feature is useful for testing remote devices, which may be
connected to the sensor output.
ZGARD S Sensors, Zero Deadband: Each sensor provides a
zero deadband (cut-off) option to eliminate possible high
background interference of any unsuspected environmental or
other airborne compounds. This function is switch-selectable.
This function is factory-set to enable (switch 4 OFF). For cut-off
values, see Chapter 1.