||PINPOINT™ Salinity Monitor
is proud to introduce PINPOINT ™ Salinity Monitor, the only truly accurate and
affordable Salinity measurement system. A 9-volt battery should be used
for intermittent or field use while a PINPOINT AC Adapter
Kit can also be installed. Battery replacement is visually
indicated on the display as "LOBAT."
NOTE: The Salinity 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 warranty.
Unwrap the protective plastic
packaging from the Salinity 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
Your PINPOINT Salinity Monitor™ is now ready for
Note: The meter should
be calibrated immediately before use. The calibration should be checked
occasionally to verify your readings. The precise measurement of Salt by
electronic conductive means has long been considered to be the most
accurate method, especially when compared to Specific Gravity / Density
(hydrometers) and refractometers.
Marine environments should use
the calibration fluid labeled 53.0mS. Empty the 53.0mS into a small, clean
cup and swirl the probe in the fluid making sure that no air bubbles have
accumulated under the probe. Wait 1–2 minutes to allow for the temperature
thermistor inside the probe tip to properly compensate for any temperature
differences between the fluid and the probe. Using a miniature
screwdriver, turn screw #3 (see diagram) until the display matches the
53.0mS fluid (±0.5). The calibration adjustment screw #3 is located inside
the battery compartment most toward the center of the meter. Note that the
conversion chart will convert the display readings to either ppt (” Salt)
and/or SG (Specific Gravity). Click here for an expanded range PINPOINT Salinity
Koi and Freshwater Systems benefit greatly from a small
but precise level of added salt. Typically, a 0.3% level is considered
optimum. These low levels can only be accurately measured with a PINPOINT Salinity
Monitor. Hydrometers and refractometers are generally impossible to
use at these low salt levels. The PINPOINT Salinity
Monitor should first be calibrated with a 0.3% salt fluid. Prepare
this fluid by mixing 11.4 grams of pure uniodized table salt (Kosher Salt)
with 3,785mL (1 gallon) of distilled or deionized water. Perhaps your
neighborood pharmacist can help measure the 11.4 grams of salt. Submerge
the probe into this 0.3% calibration fluid and calibrate the PINPOINT Salinity
Monitor to display 5.5mS by adjusting screw #3. Your PINPOINT Salinity
Monitor is now calibrated to read the low salt levels of a Koi
pond, etc. It is important to take into account the existing salt level in
a pond before adding any additional salt.
Salinity is a complex
subject and one must be sure of the target specific gravity or ppt Salt
has been properly selected in advance. The PINPOINT Salinity
Monitor is automatically temperature compensated therefore the
displayed values are already compensated and corrected.
NOTE: Do not adjust screw #4 since this is used to
set frequency and requires specialized equipment for adjustment. Screw #4
has been set at the factory and does not require further adjustment. A
small amount of glue has been placed on screw #4 to prevent accidental
Points to Remember
- The PINPOINT Salinity Meter is NOT waterproof and must be
operated on a dry surface. Any liquid contact on the printed circuit
board will cause corrosion and void warranty.
- It is important to "swirl" the probe so as to eliminate any air
bubbles that may accumulate under the probe before taking a measurement.
- The probe is epoxy sealed and can be totally submerged.
- The electrode should be cleaned every few months with a mild
solution of water (16 oz.) and dishwashing detergent (1/2 teaspoon).
Rinse the electrode well with fresh water.
- The PINPOINT Salinity Monitor is automatically compensated
throughout the temperature range 32ºF to 122ºF (0º to 50ºC).
- Calibrate the monitor with the appropriate fluid before use.
- Check the calibration occasionally. Calibration fluid can be re-used
if uncontaminated by other fluids and kept in a tightly capped
Reference Chart Sources:
- Zerbe and Taylor (1953)
- Cox R.A., The Physical Properties of Seawater, Chemical
Oceanography, Vol. 1, Riley, J.P. and Skirrow, G. Eds., Academic Press,
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.
or alteration of the serial number will void warranty.
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 instructions.
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.
54 Danbury Road, Suite 172
Ridgefield, CT 06877