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Copyright © 2022 Comark Instruments 20825-1 | May 2022
Copyright © 2022 Comark Instruments
Introduction
Accessories
Internal Configuration
Sensor Selection
Power Options
Voltage Transducer Wiring
Current Transducer Wiring
Current Transducer Wiring (Loop-Powered)
Important Notes
Warranty
3
4
5
6
7-8
9
10
11
12
13
Copyright © 2022 Comark Instruments
This user guide is designed to assist anyone wishing to install the Diligence
600 Multi-Parameter 2-Way Adaptor Box (RF615B) and sets out the various
types of transducer that the adaptor can accommodate, as well as detail the
relevant connectivity.
It should be noted that the Diligence 600 Multi-Parameter 2-Way Adaptor Box
(RF615B) is only designed to work with the Diligence 600 WiFi Multi-Parameter
Transmitter (RF615) which itself is suited to a wide range of applications and
is capable of measuring parameters such as current, voltage, pressure, gas,
flow, level, dissolved oxygen and CO2.
Part No: RF615B (5306391)
A two-channel device designed to
allow for the connection of up to
TWO external transducers of either
0-1V, 0-10V or 4-20mA, using
integrated screw terminals.
Part No: RF615 (5306340)
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For the Diligence 600 WiFi Multi-Parameter Transmitter (RF615)
The Diligence 600 WiFi Multi-Parameter Transmitter (RF615) is capable of
handling up to FOUR external transducers through a combination of adaptors.
You will also need cable to perform the wiring between the Adaptor Box
(RF615B) and each Transducer. Standard hook-up wire will be suitable, as the
connections are all low voltage or low current. There is no strict limit to the
length of the cables, nor between each Transducer and the Transmitter, but it
is always recommended to keep these distances as short as practicable.
Please note that long cable lengths, especially for Voltage Transducers can
affect readings, as there can be voltage drop along the cable.
You may also require separate power directly to your transducers, depending
on the manufacturer recommendations.
Part No: 18477 (3616817)
This 24V Power Supply with
interchangeable mains plugs to
suit your region is designed for
use with the Multi-Parameter 2-
Way Adaptor Box (RF615B).
Part No: RF602Y (5306378)
Use the Y Adaptor should you wish to
add TWO Multi-Parameter 2-Way
Adaptor Boxes to your transmitter in
order to maximize the number of
external channels you can measure.
The Multi-Parameter 2-Way Adaptor Box (RF615B) is opened by undoing the
two screws located on the rear (underside) of the device. Inside you will see the
PCB with several different terminals, as indicated below. All connections are
made using the screw terminals provided. Please note that you might need to
insert two wires into any of the screw terminals.
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Voltage/Current Selectors
24V Power In/Out
(If Required)
Transducer Connector Inputs
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The Adaptor Box is divided into two channels which are labelled (CH1 and CH2)
as indicated below. If two adaptor boxes are used, via a Y Adaptor (RF602Y),
then channel 1 will be reflected as channel 3 on the connected transmitter,
and channel 2 as channel 4.
Each channel is independent, so can either be configured for a voltage input, or
for a current input. CH1 and CH2 need not have the same configuration.
The selection of either voltage or current is made using the included shorting
links as indicated above. Please ensure that you have made the correct
selection else there will be errors in the readings.
It is recommended that only persons with some prior knowledge of electrical
circuits, undertake any required wiring of the Adaptor Box(es).
Voltage
Selection
Current
Selection
The Multi-Parameter 2-Way Adaptor Box (RF615B) is pre-fitted with three cable
grommets which should be used for bringing cables in and out of the housing.
The Adaptor Box also includes connections for a 24V mains power supply unit
(PSU) in order that power can be supplied to connected devices.
It should be noted that some transducers require a separate PSU. In the case of
4-20mA transducers, some are loop-powered, with the connections in series.
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24V Power In/Out
(If Required)
Cable Grommets Cable Grommets
The 24V PSU connection to the Adaptor Box (RF615B) includes two additional
connectors, to allow power output to the transducer. The ground connection
should be used for both the PSU and connections to 0V on the transducers.
In some special cases, current (4-20mA) transducers do not have a separate
output for the signal and rely on the two-wire connection for both sensor power
and the output to the loop. In such cases special attention should be paid to the
connections required. An example of wiring for loop-power is given further on.
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24V PSU
Input
Power to Transducer
0V Input from Transducer
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Here the transducer has four connections, two for power in and two for the
signal out. It is possible that the ground input may be shared with the 0V
output thus having only three connections instead of four.
It may not be necessary to use the power connections inside the Adaptor Box
as power can be provided direct to the transducer. However, if using two
voltage transducers, then using the Adapter Box connections would allow
both to be powered from a single PSU. Always ensure that you use the 0-1V or
0-10V input as per the transducer selection.
24V PSU
Input
0V
24V
Ground
0-10V
Voltage
Transducer
PSU 0V
In this example, the transducer has four connections, two for power in and two
for the signal out. It is possible that the ground input may be shared with the
0V output thus having only three connections instead of four.
In this instance the 4-20mA current transducer is not loop-powered and has
separate power input and current output.
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24V PSU
Input
0V
24V
Loop Return
4-20mA
Current
Transducer
PSU 0V
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