Sper Scientific 850050 Large Display pH Pen - Manual (Page 2)

LARGE DISPLAY PH PEN
850050
WARRANTY: Sper Scientific warrants
this product against defects in materials
and workmanship for a period of 1 year
from the date of purchase, and agrees
to repair or replace any defective unit
without charge. If your model has since
been discontinued, an equivalent Sper
Scientific product will be substituted if
available. This warranty does not cover
probes, batteries, or damage resulting
from accident, misuse, or abuse. To
obtain warranty service, ship the unit
postage prepaid to:
SPER SCIENTIFIC
7720 E Redfield Rd, Ste 7
Scottsdale, AZ 85260
Email: [email protected]
Include a description of the problem
and your return address along with the
returned item. Return the warranty card
within 10 days or register at:
www.sperscientific.com
BATTERY REPLACEMENT
 Replace all 4 LR44 batteries when the
low battery icon is flashing, or when
troubleshooting (below) fails.
 Unscrew the cover and install the
batteries with the flat positive (+) side
of the batteries facing the spring.
 Do not remove the O-ring.
 Remove the batteries when the unit is
not in use for an extended period.
TROUBLESHOOTING
 If there is no display, or you have
erratic readings after having soaked
the electrode in distilled/de-ionized
water for at least 1 hour prior to
calibration, check the continuity of the
batteries by removing them for 1
minute, then reinsert.
 Slow Response: Soak the electrode in
tap water for 10-15 minutes, then rinse
with distilled/de-ionized water.
 "- -
-
" displays when the pH sample is
too acidic or too alkaline.
 No Display: Be sure to press for at
least one second. If the problem
persists, see Battery Replacement
(above).
 If your readings are still erratic after
calibration, soak the electrode for 10
to 30 minutes in distilled water.
 Note: It is normal for the pH value to
fluctuate quickly when the electrode is
exposed to air and not immersed.
SPECIFICATIONS
Range 2~12 pH
Resolution 0.1 pH
Accuracy
Adjustable
Calibration
Points pH 4
pH 7
pH 10 3.5~4.5
6.5~7.5
9.5~10.5
Operating
Environ. 31~122°F
0~50°C <80 RH
Weight 2.4 oz, 68g with battery
Dimension 6½" x 1½" x 1"
165 x 35 x 32 mm
±0.3 pH