||PINPOINT¨ Conductivity Monitor
American Marine is proud to introduce PINPOINT¨ Conductivity Monitor,
the only truly accurate and affordable hardness measurement system. The
precise measurement of inorganic salt by electronic conductive means
has long been considered to be the most accurate method to determine
hardness. A 9-volt battery should be used for intermittent or field use
while a PINPOINT¨ AC Adapter Kit can also be used. Battery replacement is visually indicated on the display as "LOBAT."
NOTE: The Conductivity Monitor
unit is NOT waterproof and must be operated on a dry surface. Liquid
contact on the printed circuit board will cause corrosion and void
Unwrap the protective plastic packaging from the PINPOINT¨ Conductivity Monitor unit. Remove the battery cover on the back of the monitor and install a 9-volt battery or the PINPOINT¨ AC Adapter Kit.
Activate the unit by setting the power switch to the ON position. Use
the pop-up stand on back and place meter on any flat, dry surface.
Velcro can be used to mount the meter onto a vertical surface.
Your PINPOINT¨ Conductivity Monitor is now ready for calibration.
The meter should be calibrated immediately before use and should
also be checked occasionally to verify the readings. Calibration should
be done with the lower switch to the left; in the 2K position. Use a
calibration solution of known value and high accuracy such as 45µS. The
calibration adjustment screw #3 is located inside the battery
compartment most toward the center of the meter. Place the probe into
the liquid and allow a minute for any temperature compensation to take
place. Swirl the probe and be sure to be sure that NO air bubbles have
accumulated under the probe tip. Using a miniature screwdriver, turn screw #3 until the display matches the value of your calibration fluid. DO NOT adjust screw #4
since this is used to set measuring frequency and requires specialized
equipment for adjustment. Screw #4 has been factory set and does not
require further adjustment. A small amount of blue glue has been placed
onto screw #4 to prevent accidental adjustment.
Note: The 2K scale will display up
to 2,000 microSiemens (µS) in a resolution of single microSiemen units
(µS). This is most useful for freshwater applications. The 20K scale
will display up to 20,000 microSiemen (µS). When the meter is used in
the 20K mode, only the first four digits will be displayed, i.e. 15.41
is actually 15,410 microSiemens (µS). Samples in excess of 20,000
microSiemens will appear on the display as "1" signifying that the
sample is of out of range of this instrument. The PINPOINT¨ Salinity
Monitor can be used to measure this higher range up to 200,000 µS.
CONVERSION TO OTHER SCALES OF HARDNESS
33 microSiemens = 17.9ppm
33microSiemens = 1dH (German ˇ hardness)
1dH = 17.9ppm
***Therefore the mathematical formula for a conversion to ppm
is: Take the reading on the display and divide it by 33, then take the
result and multiply it by 17.9
Important Points to Remember
PINPOINT¨ Conductivity Meter is NOT waterproof and must be operated on a
dry surface. Liquid contact on the printed circuit board will cause
corrosion and void warranty.
- "Swirl" the probe so as to eliminate any air bubbles that may accumulate under the probe before taking a measurement.
electrode should be cleaned every few months with a very weak solution
of water (16 oz.) and dishwashing detergent (1/2 teaspoon). Rinse the
electrode well with fresh water.
- The PINPOINT¨ Conductivity Monitor
is automatically compensated throughout the temperature range 32ˇF to
122ˇF (0ˇ to 50ˇC). Therefore the displayed value has already taken the
temperature into effect and this value is considered already corrected.
the monitor with the appropriate fluid before use. Be sure that the
range switch is on the correct scale during calibration.
Range Switch LEFT
- Use the 2K scale for a calibration fluid with a value under 2,000µS
Range Switch RIGHT
- Use the 20K scale for a calibration fluid value between 2,000 and 20,000µS
the calibration occasionally. Calibration fluid can be re-used if
uncontaminated by other fluids and kept in a tightly capped container.
PINPOINT¨ Conductivity Monitor
by American Marine Inc. is warranted to be free of defects in material
and workmanship for a period of 2 years from date of sale. Positive
proof of purchase is required for warranty claim.
Removal or alteration of the serial number will void warranty.
American Marine Inc. will not be liable for any costs of
removal, installation, transportation charges, or any other charges,
which may result in connection with a warranty claim.
American Marine Inc. will not be liable for any damage or wear
to products or livestock caused by abnormal operating conditions, water
damage, abuse, misuse, unauthorized alternation or repair or if the
product was not installed in accordance with the printed operating
Any defective product to be returned must be sent freight
prepaid with appropriate documentation supporting the warranty claim.
Replacement or repair will be at the discretion of American Marine Inc.
Typical turnaround time within 48 hours. Overnight delivery available.
American Marine Inc.
54 Danbury Road, Suite 172
Ridgefield, CT 06877 U.S.A.