Remote sensor probe wiring, Figure 2-17. isolated alarm output connections, Figure 2-18. non-isolated alarm connections – Sierra FLAT-TRAKTM 780S User Manual

Page 23

Advertising
background image

Series 780S Instruction Manual

Chapter 2 Installation

IM-78S-B

2-11

1
2
3
4
5
6
7
8
9

10

20
19
18
17
16
15
14
13
12
11

Hazardous-Area Enclosures

Load

Load

LO ALARM (–)

AC or DC

power supply

HI ALARM (–)

ALRM COM

Figure 2-17. Isolated Alarm Output Connections

1
2
3
4
5
6
7
8
9

10

20
19
18
17
16
15
14
13
12
11

Hazardous-Area Enclosures

Load

Load

LO ALARM (–)

HI ALARM (–)

ALRM COM

DC POWER OUT

Figure 2-18. Non-Isolated Alarm Connections

Remote Sensor Probe Wiring

When connecting the sensor probe to a remotely mounted flow
meter enclosure, use only factory supplied cables. The electronics,
sensors and interconnecting cables supplied by Sierra Instruments
are calibrated as a complete precision mass flow circuit.

To connect the sensor probe to a remotely mounted electronics
enclosure, see Figure 2-19 or Figure 2-21. To make wiring
connections from a sensor probe junction box to a remotely
mounted enclosure, see Figure 2-20 or Figure 2-22.

Caution!

Changing the length of ca-

bles or interchanging sen-

sors or sensor wiring will af-

fect the accuracy of the flow

meter. You cannot add or

subtract wire length without

returning the meter to the fac-

tory for recalibration.

Advertising