5
Low Voltage Connections
All of the low voltage electrical communication connections to the
instrument are made at the termination area located on the middle
bottom side of the Main UI board located inside the electrical panel.
To access the connections, open the access panel by loosening
the captive Phillips screw. The connections are labeled (CN27 for
Silver, CN28 for Copper). Upper pin is negative, lower pin is positive.
Please follow all government recommendations and requirements for
installation of electrical connections to and between the instrument and
other peripheral devices. All terminals are designed to accept wires in
the range of 14 - 28 AWG.
4-20mA Analog Output
There are 2 4-20mA outputs, one for Copper and one for Silver. The
connections are located in the mid bottom side of the board inside
the electrical panel. The 4-20mA output is driven by a 24 VDC power
source and can drive recorder loads up to 1000 ohms.
Do not run
4-20 mA cables in the same conduit as power.
Transformer
isolation is provided on the CSM. Operation of this output is covered
in the Analog Output Menu. Negative polarity is on the top, positive
polarity is on the bottom.
The recommended cable is 22 AWG shielded twisted pair. To prevent
ground loops, connect the shield only at its destination. The black
terminal block is removable to assist in making connections.
The 4-20mA is factory calibrated. An adjustment can be made using
the Analog Output Menu. In addition to making adjustments, these
menus output continuous 4mA or 20mA and can be used as a signal
test. The configuration mode will time out after 15 minutes.
Securing the Glands - Low Voltage
Low voltage connections to the instrument are made through electrical
glands located on the left side of the enclosure. Once the appropriate
low voltage wiring is inserted through the electrical gland and wiring
is secured at the terminals on the Main UI board, the gland on the left
side of the enclosure must be tightened to ensure wiring is
safely installed.
Mains Power Connections
Once all low voltage connections are made, the mains power should
be connected through the 2nd gland located on the left side of the
enclosure.
The CSM is not supplied with a power cord.
The CSM requires a
user supplied power cable, capable of 120/240V.
Terminal 3: Earth Ground
Terminal 2: Neutral
Terminal 1: Line or Hot
Suitable wire would be stranded, 3 conductors 18-12 AWG copper or
tin plated copper with a voltage rating of 600 VAC with a temperature
rating of 90°C or higher.
Common earth bond points are provided both inside the enclosure
on the chassis and outside of the enclosure. This terminal set can
be removed for easier connections. Please ensure this terminal set is
properly tightened using the two side screws.
3.2 Plumbing Connections
All plumbing connections are made with user supplied OD tubing using
the push to connect fittings attached to the CSM. All water tubing used
to connect to the CSM is supplied by the installer.
• Sample water should be particulate free.
• The sample water supply does not need to be pressurized. The
CSM incorporates a regulator at the water supply inlet.
• In order to ensure that the sample measured is representative,
keep the sample pipe run as short as possible.
• A water shutoff valve should be located close to the instrument
to allow for periodic maintenance.
1. Connect the sample water line to the CSM using the
1
⁄
4
" push to
connect fitting on the bottom of the enclosure.
2. Connect the main drain line to the CSM using the
3
⁄
8
" push to
connect fitting on the bottom of the enclosure. There is no tubing
connection for the emergency drain.
3.3 Electrical Connections
All electrical connections are located in the upper electrical
compartment. The electrical compartment access at the front can and
should only be opened during installation. No power should be applied
until the electrical compartment access is closed and sealed.
The CSM has two types of electrical connections. First, the mains
power connection, which connects to the cable gland on the left side
of the CSM. Second, the low voltage connections, which are made
through the 2nd gland on the left side of the CSM.
Electrical Wiring Requirements
The CSM is required to be wired with a 15A circuit breaker. The cable
should be sized for a 15A supply with all three wires the same gauge.
Local Disconnect
A local two pole disconnect needs to be installed less than 2 meters (6
feet) from the instrument and labeled as the disconnect for the CSM.
This allows for emergency disconnect and isolation of the equipment.
When using this instrument in potable water applications,
the drain water from this instrument should NEVER be
reintroduced back into the incoming water stream. This
water MUST be directed to a convenient drain.
NOTICE
Ask mike why no min listed for allowable
fluid temp
Electrical Panel
Main UI Board
Display Board
It is recommended to install pressure regulating and relief
valves to maintain proper inlet pressure for the instrument.
Contact HF scientific Customer Service to order pressure
regulators and relief valves.
NOTICE
4-20mA
Connections
Main UI Board Located inside the Electrical Panel
All low voltage connections should be completed before the
mains power is connected to the system.
WARNING
!
Installation of this instrument involves line voltage that could
endanger life. Only qualified electricians should perform
installation of the instrument.
WARNING
!
The instrument can accept 100-240 VAC, 47-63 Hz. Verify that
the mains voltage falls within these specifications.
WARNING
!
