General Tools and Instruments SAM990DW - Manual (Page 2)

DISPLAYING MINIMUM AND MAXIMUM READINGS
The SAM990DW automatically tracks the maximum and
minimum (highest and lowest) RH values and
temperatures (ambient, Dew Point and Wet Bulb) sensed
over a measurement “session”—the time during which
you make measurements at multiple locations and/or
under different conditions. Each session begins when you
power on the unit; it typically ends 20 minutes later with
the activation of the APO function.
The value of being able to quickly determine the hottest or
coolest, or wettest or driest area of several possibilities
should be obvious.
To display the minimum RH level and temperature sensed
during a measurement session, press and hold the
MN/MX once. Doing so will cause both readings to appear
on the LCD, with the term MIN at the right of the RH%.
To switch to the maximum RH level and temperature
detected over the same period, press and hold the
MN/MX button again. This will change MIN to MAX.
To resume displaying real-time readings, press and hold
the MN/MX button again.
To clear the Min and Max session values from memory,
press and hold the RST button until the LCD briefly shows
all possible display indications, and then returns to
showing real-time, Min or Max readings.
SPECIFICATIONS
Temperature Measurement Range:
-4° to 122°F (-20° to 50°C)
Temperature Measurement Accuracy: ±1.8°F (±1°C)
Temperature Measurement Resolution: 0.1°
RH Measurement Range: 0 to 100%
RH Measurement Accuracy: ±3% at 77°F (25°C)
from 10 to 90% RH; ±4% elsewhere
RH Measurement Resolution: 0.1%
Dew Point Measurement Accuracy: ±1.2°F (±0.6°C)
Auto Power Off Trigger: 20 minutes of front-panel inactivity
Dimensions: 6.7 x 1.85 x 0.5 in. (170 x 22 x 13mm)
Weight: 4 oz. (113g)
Power Source: 2 “AAA” batteries (included)
OPERATING & MAINTENANCE TIPS
When the entire displays flashes, the batteries’ voltage
has fallen below the threshold needed to assure accurate
measurements. Replace weak or dead batteries
immediately.
Never immerse the temperature-humidity sensor at the
top of the SAM990DW in liquid. Doing so will permanently
damage the sensor and void the instrument’s limited
warranty.
A small amount of condensation visible on the LCD will not
affect the unit’s accuracy.
WARRANTY INFORMATION
In the U.S, General warrants its instruments and
accessories against defects in material or workmanship
for one year from the date of purchase. General will
replace or repair the defective unit, at its option, subject to
verification of the defect.
This warranty does not apply to defects resulting from
abuse, neglect, accident, unauthorized repair, alteration, or
unreasonable use of the product.
Any implied warranties arising from the sale of a General
product, including but not limited to implied warranties of
merchantability and fitness for a particular purpose, are
limited to the above. General shall not be liable for loss of
use of the product or other incidental or consequential
damages, expenses, or economic loss, or for any claim of
such damage, expenses, or economic loss.
State laws vary. The above limitations or exclusions may
not apply to you.
We encourage you to register your product online. General
will extend your warranty an additional 60 days if you
register at www.generaltools.com/ProductRegistry.
RETURN FOR REPAIR POLICY
Every effort has been made to provide you with a reliable
product of superior quality. However, in the event your
instrument requires repair, please contact our Customer
Service to obtain an RGA (Return Goods Authorization)
number before forwarding the unit via prepaid freight to
the attention of our Service Center at this address:
General Tools & Instruments
80 White Street
New York, NY 10013
212-431-6100
Remember to include a copy of your proof of purchase,
your return address, and your phone number and/or e-mail
address.