8
INSTALLATION
UNPACKING AND INSPECTION
The Level Mate II is calibrated with a specific
Submersible Transmitter.
The Transmitter Model Number is identified on
the meter nameplate in the section labeled
“USED WITH.”
The meter should be used with the transmitter
with which it was calibrated.
Unpack the meter, transmitter and cable from the
shipping container and inspect for physical dam-
age.
OPERATIONAL CHECKOUT
Before installing the Level Mate II Transmitter,
make sure the system is operating by doing a
bench check.
WARNING: Do not connect any wires while
AC Power input is applied.
Connect AC power to the meter. Apply power
and allow a five-minute warm-up.
With no pressure applied to the transmitter, the
meter should display zero (or for “drawdown” the
reading corresponding to the depth below ground
level that the transmitter will be when installed.)
CAUTION: Do not simulate an increase in
pressure by applying mechanical force to the
sensing diaphragm of the transmitter. Exce s-
sive force will result in damage to or destruc-
tion of the transmitter.
When pressure is applied to the transmitter, the
display should increase (or decrease if setup for
“drawdown”) and return to the original reading
when pressure is removed.
The Transmitter can be pressurized by lowering it
into water or by applying air pressure from a cali-
bration device. To apply air pressure unscrew
the snub-nose and replace it with a 1/2 “ NPT
pressure fitting.
LEVEL MATE II MODEL 575
TRANSMITTER
The Level Mate II Transmitter can be suspended
in a well or tank supported only by its attached
shielded electrical cable. Ensure that the opening
in the well or tank cover is large enough for possi-
ble future removal of the transmitter.
Additional support can be provided when the trans-
mitter is being used under circumstances of excess
stress, such as, when submerged in agitated water
or when suspended with electrical cable longer
than 300 ft. The cable support feature on the
transmitter provides this extra strain relief (SEE
FIGURE 3.)
LEVEL MATE II METER/CONTROLLER
The meter/controller in the NEMA 4X housing can
be mounted on a flat panel or wall with 4 #8 (4 mm)
screws. 5/8” (15.9 mm) is captured by the housing.
Note:
1 3/8” (35 mm) of a 2” (50.8 mm) screw will
be exposed.
SIGNAL NOISE ISOLATION
The meter should not be mounted close to high
current switching relays or in an enclosure contain-
ing such relays.
Low voltage wiring (transmitter signal wires and
analog output wires) should be separated from high
voltage wiring (115, 230 & 440 VAC) and should be
shielded.
SURGE PROTECTION
Surge protectors are available as an option item
(see “parts & accessories” in the back of this man-
ual) and are strongly recommended to protect from
secondary surges and lightning on outdoor installa-
tions. Install in accordance with the applicable
drawing that is supplied with the surge protector
and the following instructions:
1.
Lightning protection devices should be placed
as close to the meter or transmitter as possible
and wired in accordance with Local Electrical
Codes in an approved watertight enclosure.
2.
If the distance between the meter and transmit-
ter, or meter and recorder is less than 100 ft.
only one protector per line is needed.
3.
Use No. 8 AWG ground wire or better from pro-
tector.
4.
Keep ground wire less than one foot long and
tie to a suitable ground rod or metal frame
ground. Surge capability is only as good as the
grounding method. All ground connections
must be installed.
21
1. Linearization Type (LIn)
a)
With a normal linear signal applied
set this parameter to
OFF
.
2. Automatic Calibration (ACAL)
This function allows you to calibrate the unit to an applied signal. You may calibrate to a low signal (zero) and then
at a later time calibrate to the high signal (span). Then at any time that you want to make this calibration effective
you can activate it.
A good example of a practical application for this would be for level indication of a tank. When the
tank is empty you could do the low (zero) calibration point. Then later in the day, or even later in the
week, you can perform the high (span) calibration. This way you don’t have to interfere with the nor-
mal process of filling and emptying the tank in order to calibrate the meter. You can perform the cali-
bration at any convenient time in your normal process.
a) Under the
CAL
menu select either
I dC
or
V dC;
whichever type is appropriate for your input signal.
Then enter the low calibration point (zero) at the
rdLO
prompt and the high calibration point at the
rdHI
prompt.
b) Exit the Setup mode and reset power to the meter. It will now read the approximate engineering units based
upon the data entered in the
CAL
menu. You may proceed with the actual calibration to the applied inputs at any
time as described in the following steps.
c) Under the
SPEC
menu go to the
ACAL
prompt and press the
key; the display will show
ACLO
.
d) Press the
key again, the unit will go through a reset cycle, during which the display will light all seg-
ments and decimal points.
e) The display will now show
CALO
(Calculation 1) alternating with the input reading at this time. Make
sure that the input applied is the input that you want to read-out as the value entered at the
rdLO
prompt; then press
the key.
f) The unit will return to the normal measurement mode. If you are ready to also do the span at this
time proceed immediately with the next step. As mentioned above the next step may be done at any convenient time.
g) Enter the
ACAL
menu again but step to the
ACHI
prompt. Press the
key; the display will go
through the reset function.
h) The display will show
CAHI
(Calculation 2) alternating with the input reading. Make sure that the input
applied is the input that you want to read-out as the value entered at the
rdHI
prompt; then press
the key.
i) The unit will then return to the normal measurement mode. If you want to activate these calculations then
enter the
ACAL
menu one more time. At the
CALC
prompt press the
key. The meter will activate the calcu-
lations and go through the reset procedure one last time. The unit is now calibrated exactly to your process signals.
3. Factory Defaults (dEF)
At times it may be desirable to reset all of the programming in the unit and start over again. For example, if the unit
isn’t performing as expected and you have lost track of what menus you have been changing. There is a simple one
step procedure to accomplish this.
a) Enter the
SPEC
menu and step down to the
dEF
prompt. Press the
key; the display will show
SEt.
b) Press the
key again; the display will go through the reset, which lights all segments and decimal
points. The unit will now be set for factory defaults
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