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Pura 2-Wire/3-Wire/Digital Transmitter
User’s Manual
6
97070 Issue 12.1, March 2016
INSTALLATION
3-wire
4-20 mA (Source)
PIN 3
PIN 1
(GND)
GROUND (System 0 V)
and Cable Screen
Power (+12 V to +24 V)
Figure 8
Rear of Connector Terminal Block - 3-wire
4-wire Digital String
NOTE: Digital String will only work with Pura AOL Monitor
YELLOW
GREEN
BLUE
RED
PIN 3
PIN 2
RED
+Power
YELLOW
Signal (A)
GREEN
Signal (B)
PIN 1
BLUE
Ground
1
2
3
4
YELLOW Signal (A)
GREEN Signal (B)
BLUE Screen
RED +Power
Figure 9
Rear of Connector Terminal Block - 4-wire
2.6 Transmitter
Mounting
2.6.1 Pura SEN - Sample Block (Optional)
Prior to installation of the transmitter, unscrew and remove the red plastic cover and
HDPE guard and retain for future use. Take care to prevent any contamination of the
transmitter before installation -
handle the transmitter by the main body only,
avoiding contact with the sensor guard
.
The recommended gas
fl
ow rate, when mounted in the optional sampling block, is 1 to
5 Nl/min (2.1 to 10.6 scfh). However, for direct insertion applications, gas
fl
ow should
be from static to 10 m/sec (32.8 fps).
Содержание Pura 2-Wire
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