Pulse Splitters Installation Guide v2.6 Apr 2019
Introduction
The Enica Pulse-Splitter range is designed to split the pulse signal from a utility
meter to several dataloggers. The device is passive and does not have any moving
parts or batteries. The splitter can be used with electric, gas, water or in fact any
meter with a pulse output (Volt-free contact, Reed relay or Open-collector).
For the purposes of gas meter installations, Enica Pulse Splitters could be
regarded as “Simple Apparatus”, however, the device provides no Intrinsic
Safety isolation via optical or galvanic barriers and the details within this
instruction manual MUST be adhered to. Only loggers with suitable Ex
certification and conforming to the electrical ratings detailed in this
document should be connected to the Pulse-Splitter when being used in a
gas meter situation.
Installation Procedure – Pulse-Splitter
Note: The standard version of the pulse splitter is not waterproof and is not
suitable for use in wet environments such as water meter pits.
Step 1:
Open the enclosure.
Step 2:
Wire the pulse input (coming from the utility meter) to the
terminals labelled INPUT. Please observe polarity if applicable.
Step 3:
Wire the 1st datalogger to Output 1. Please observe polarity
and – on the terminal blocks
Step 4:
Wire the 2
nd
and 3
rd
dataloggers to Output 2 and 3 respectively.
Please observe polarity and – on the terminal blocks
Step 5:
Close the enclosure using the screws provided. Mount the
Pulse-Splitter in a suitable location.
Installation Procedure – Waterproof Pulse Splitter
The waterproof version of the pulse splitter has all internal components
encapsulated within waterproof gel compound. There are no serviceable parts
inside and the enclosure should not be opened.
Step 1:
Wire the pulse input (coming from the utility meter) to IN cable.
Please observe polarity if applicable (White = Positive, Brown =
Negative)
Step 2:
Wire the 1st datalogger to any of the OUT cables. Please
observe polarity on cable (White = Positive, Brown = Negative)
Step 3:
Wire the 2
nd
and 3
rd
dataloggers the second and third OUT
cables respectively. Please observe polarity on cable (White = Positive,
Brown = Negative)
Safety Warnings
•
No user serviceable parts inside.
•
Observe the instructions and all warnings on the device and within these
instructions.
•
The installer/end-user is responsible for safe installation.
•
Local working practices should be adhered to for installation.
•
The enclosure of the device should be fully fitted.
Use of the Device in a Gas/Potentially Explosive Environment
The Enica Pulse Splitter could be regarded as “Simple Apparatus” and could
therefore be utilised to split meter pulses within a gas meter/potentially explosive
atmosphere as long as the loggers connected have suitable Ex certification and
do not exceed the following electrical ratings:
Electrical Ratings for Meter Input
Ui=0, Ci=0, Li=0
Electrical Ratings for Connected Loggers
Ui= 7.0V, Li = 14mA, Pi = 20mW, Ci = 0, Li = 0
Cable length must be a maximum of 10m
“Simple Apparatus" as defined in the European harmonised standards for
electrical equipment intended for use in potentially explosive atmospheres are
excluded from the Directive, as they have no own source of ignition. Therefore,
they do not have to meet the relevant Essential Health and Safety Requirements
or be subject to the conformity assessment procedures under Directive 94/9/EC.
IMPORTANT: The Pulse-Splitter does not provide any isolation and therefore all
connected loggers MUST carry suitable Ex Certification. When used in a gas
environment, loggers without Ex Certification MUST NOT be connected to the
pulse splitter without suitable intrinsically safe isolation.
Troubleshooting
In some circumstances, the splitter may show the following symptoms:
Pulses are received by a logger only when a single logger is connected to the
splitter. When connecting a second or third logger, the pulses are not received
by any device. In these cases, attempt to ensure pulse wiring makes a true
circuit through the splitter and back to the meter.
In some other cases, especially if the voltage being applied to the splitter from a
logging device is low, the splitter can cause a slight volt drop in the logger output
to the extent where the logger may not detect the pulses.
The splitter is designed to split digital (on/off) pulses. Ensure that the logging
systems connected to the splitter have the same current type (AC or DC) coming
from their Pulse/Digital Input. Do not connect loggers which use the opposite
current type e.g. do not mix loggers that use AC with those that use DC.
Special Conditions
In some extreme conditions, the enclosure of the Pulse-Splitter may be capable
of generating an electrostatic charge, which could potentially cause ignition.
When the Pulse-Splitter is being used in a gas meter environment, the device
shall not be positioned in such a way where external conditions are likely to
cause an electrostatic charge on the enclosure of the device. In addition, the
device shall only be cleaned with a damp or conductive cloth.
Disposal
The device must not be disposed of as unsorted waste and must be collected
separately to ensure correct environmentally sound disposal. Where possible,
the device should be returned to the manufacturer (or their authorised agent) for
correct disposal. If this is not possible, your local Waste Disposal Authority
should be consulted to ensure disposal in compliance with waste electrical and
electronic equipment (WEEE) regulations that may be in force at the time.
Support and Contact Information
For technical support and queries, please contact:
Enica Ltd
Unit 7
Melin Corrwg Business Parc
Upper Boat
PONTYPRIDD
CF37 5BE
Tel: +44 (0)1443 844224
Fax: +44 (0)1443 381000
Email: [email protected]
Legal Notice
The information contained in this document is subject to change without notice.
Enica Ltd makes not warranty of any kind with regards to this document include,
but not limited to, the implied warranties of sale and fitness for purpose. Enica
Ltd shall not be liable for errors contained herein or for incidental or
consequential damages in connection with the use of this document.
