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PrimaX® IR
14
Installation
GB
3.2
Electrical installation
Instructions for Electrical Connection
CAUTION!
The device must be installed only in compliance with the applicable regulations, otherwise the safe
operation of the device is not guaranteed.
•
Shielded cable for measuring devices is recommended.
•
Always observe maximum cable lengths and cross-sections shown below.
•
Water or impurities can penetrate the device through the cable. In hazardous areas, it is recom-
mended to install the cable in a loop just before entry into the device or to slightly bend it to prevent
water from entering.
Wiring Requirements
The device is a three-wire transmitter that operates in the current source mode and can be wired
directly to the input wires or with an optional junction box. The following table provides typical cable
lengths and wire sizes for installation. The HART signal requires a load across the signal.
Proper installation should prevent water and dirt from entering the unit via the wires or conduit.
The device is provided with 4 wires for use. The table below shows the wire color definitions:
Use a maximum (Line + Load) resistance of 500 Ohm between the DC- (white) and 4-20 mA source
(yellow) wires.
An external power source is required. Use a high quality, DC power supply with low noise characteris-
tics. See the diagram below for power supply and wiring details:
Wire Size vs Distance
Power Supply Voltage
1.0mm²
1.5mm²
Signal Load
(including termination)
24 Volts
480 m
720 m
With HART
250
load
500
Without HART
load
500
Wiring Color Definitions
Wire color
Definition
Red
24 VDC (DC +)
Yellow
4-20 mA Source (SIG)
White
0 VDC (DC -)
Green
Earth Ground
Содержание PrimaX IR
Страница 1: ...MSAsafety com Operating Manual PrimaX IR Infrared Gas Monitor Order No 10113581 04 CR 800000041694 ...
Страница 2: ...Schlüsselstrasse 12 8645 Rapperswil Jona Switzerland MSA 2020 All rights reserved ...
Страница 18: ...PrimaX IR 18 Start up and Calibration GB Fig 8 MSA Calibration Cap Fig 9 Remote HART Hand held ...
Страница 43: ...PrimaX IR 43 Approvals GB ...
Страница 44: ...For local MSA contacts please visit us at MSAsafety com ...