Omega Products PHH-720 User Manual

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Water-Resistant pH Indicator with Visual Alarm

ELECTRONICS

PHH-720

U Selectable Setpoint in a Wide Range
U One or Two Point Calibration
U Water-Resistant Enclosure
U External 12 Vdc Power Supply for

Continuous Monitoring

The PHH-720 is a water-resistant pH meter
with a built-in 3¹⁄₂-digit LCD. The meter is supplied
with the PHE-720 double-junction, plastic­body, gel-filled combination pH electrode
with 2 m (6.6') cable and BNC connector protected
by a waterproof sheath. The electrode has a unique
clogging-resistant PTFE diaphragm.

The alarm setpoint can be selected anywhere in
the 3 to 11 pH range. A red LED warns the user in
the event the reading is outside the setpoint by
more than ±0.5 pH. Calibration can be manually
performed at 1 or 2 points through two easily
accessible trimmers on the front of the unit.

The meter is suited for outdoor installations and
highly humid environments. The casing has also
been specially designed to give maximum stability
and prevent rolling from any surface. In addition,
a molded hook allows the meter to be easily
installed close to the sample. The 12 Vdc power
supply is ideal for continuous monitoring over
extended periods of time. PHH-720 is supplied
complete with pH electrode, calibration key,
power supply and instructions.

Specifications

Range: 0.0 to 14.0 pH
Resolution: 0.1 pH
Accuracy: ±0.2 pH at 20°C (68°F)
Typical EMC Deviation: ±0.2 pH
Calibration: Manual 2 point at pH 4 and 7
Setpoint: Adjustable from 3.0 to 11.0 pH
Alarm: LED blinks when pH is outside setpoint by

more than ±0.5 pH
Electrode: PHE-720 double junction, PTFE diaphragm pH
electrode with 2 m (6.6') cable and BNC connector (included)

Power Supply: External 12 Vdc (included)
Environment: 0 to 50°C (32 to 122°F); 100% RH
Dimensions: 86 L x 94 W x 33 mm D (3.4 x 3.7 x 1.3")
Weight: 150 g (5.3 oz)

PHE-720
electrode
included.

PHH-720,
comes with
pH electrode,
calibration
key, 12 Vdc
power supply
and operator’s
manual.

PHA-7

buffer solution.

To Order Visit omega.com/phh720 for Pricing and Details

Model No. Description

PHH-720 Water resistant pH indicator with alarm
PHE-720 Replacement double junction, plastic body,

gel-filled combination pH electrode with
2 m (6.6') cable

PHA-4 4.00 pH buffer solution 500 ml (1 pint) bottle
PHA-7 7.00 pH buffer solution 500 ml (1 pint) bottle
PHA-10 10.00 pH buffer solution 500 ml (1 pint) bottle

Comes complete with pH electrode, calibration key, 12 Vdc power supply,
and operator’s manual.

Ordering Example: PHH-720, pH indicator with alarm.

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