pH or ORP Controller and Dosing Pump in One Compact Unit
±0.01 pH /± 5mV Accuracy with Unbeatable Performance
Isolated 4 to 20 mA Recorder Output
Proportional Dosing Slows the Pump Down When the Measured pH or ORP Level Approaches the Set Value Which Ensures Precise Dosage and Avoids Costly Waste of Chemicals Due to Overdosage
Alarm Contact is Activated Whenever the pH or ORP Value Varies by More than 2 pH or 200 mV units from the Setpoint.
Kynar and PTFE Materials Are Used for All Parts that Come into Contact with Liquid
产品描述
The PHP-700 Series has been discontinued. Please see the
PHP-800 Series as a possible alternative or contact our Flow Engineering department.
TWO ADVANCED INSTRUMENTS IN ONE
The PHP-700 Series pumps
combine the powerful PHP-600
series dosing pumps with the stateof-
the-art controllers. These unique
products were developed for
measuring and controlling pH or
ORP and the regulated dosing of
various chemicals. The latest
innovation eliminates the need for
multiple instruments by combining
two instruments into one. No more
complicated installations, wiring,
and compatibility problems. This
compact system features accurate
regulation, proportional dosing,
alarm and recorder signals and
much more all in one unit.
EASY INSTALLATION
Designed with mounting holes in the
rugged base, the PHP-700 Series
pump/controllers are simple to
install. There is no need for any
additional hardware. All of the
controls and pump assemblies are
conveniently located on the front of
the unit. If the operator must access
the pump head or control panel for
any reason, there is no need to
dismount the unit.
RUGGED CONSTRUCTION
The PHP-700 Series pump/
controllers are housed in rugged,
fiber-reinforced polypropylene
casings. They are IP65 rated,
preventing ingress of liquids. The
material used for the housing resists
corrosion caused by most
chemicals, protecting the unit from
hazardous spills and splashes.
SUPERIOR MATERIALS
The PHP-700 Series pumps use
PVDF, FKM and PTFE materials for
all components in contact with the chemicals being
dosed. These materials
have properties that enable them to
resist even the most corrosive
chemicals in the industry. The choice
of material makes the pump more
versatile, allowing it to be used to
handle a wider variety of reagents.
S
IMPLE PUMP ACTION
A positive displacement solenoid
with few moving parts makes
PHP-700 Series pumps more
reliable than motor driven pumps.
With no rotating parts, gears or
cams, part wear and oiling
associated with motor driven pumps
is eliminated, drastically reducing
any chance of mechanical failure.
PROPORTIONAL DOSING
The PHP-700 Series controller/
pump strokes at full capacity when
the measured value deviates by
more than 1.5 pH or 150 mV from
the set value. A proportional control
slows down the stroke rate as the
measured value approaches the
user-selectable value, avoiding
over-dosage of chemicals. This
feature makes the pump’s dosing
more accurate, saves chemicals
and eliminates unnecessary and
costly corrections of your
processes, especially with slow
reacting chemicals.
ISOLATED RECORDER OUTPUT
To enhance troubleshooting and
provide the user with the ability to
record data while monitoring, the
PHP-700 Series controller/pumps
provide for a recorder output. By
simply attaching a recorder to the
instrument’s 4 to 20 mA output
contacts, conveniently located on
the front panel, you can obtain a
hard copy of the results on demand.
ALARM OUTPUT
When monitoring and controlling pH
and ORP levels in a process, it is
very important that any potential
problem will not go unattended. The
units incorporate an alarm system
that will alert the user if the reaction
is not within certain guidelines. The
alarm of the PHP-700 Series will be
activated if the measured pH value
is 2 pH units lower than the setpoint
(if dosing acid, this indicates
overdosage, a common symptom of siphoning). The alarm will also
activate if the value is 2 pH higher
than the setpoint (if dosing acid, this
is an indication of insufficient
dosage, a common symptom of the
lack of reagent). The alarm will
activate if the mV value is 200 mV
lower than the setpoint (if dosing
reducing chemicals, this indicates
overdosage). The alarm will also
activate if the value is 200 mV
higher than the setpoint (if dosing
reducing chemicals, this is an
indication of lack of reagent).
AUXILIARY DOSING CONTACTS
The auxiliary dosing contacts of the
units are closed whenever the pump
is dosing. This solution offers
considerable advantages, especially
for small plants, where these pumps
need to be the only equipment left
running. This will spare other
equipment such as
mixers, priming pumps
etc. With this feature
activated, a mixer
can be automatically
started, when the
pump is dosing.
SPECIFICATIONS Power Supply: 110/115 V 50/60 Hz ±15% (40W) Range: 0.00 to 14.00 pH; 0 to ±999 mV Resolution: 0.01 pH; 1 mV Accuracy: ±0.01 pH; ±5 mV Input: High impedance 1012 Ω BNC Connector Dosage: Proportional; acid or base; oxidizing or reducing; user selectable Dosing Contact: Isolated, 2A, max 240V, resistive load, 1,000,000 strokes Alarm Contact: Isolated, 2A, max 240V, resistive load, 1,000,000 strokes Calibration: Offset: ±1 pH by offset trimmer Slope: 85 to 115% by slope trimmer Recorder Output: 4 to 20 mA, isolated Environment: 0 to 50°C (32 to 122°F) Dimensions: 181 L x 221 W x 142 mm H (7.1 x 8.7 x 5.6") Weight: 5 kg (Approx. 11 lb)
† 所有金额以RMB显示 注: Comes complete with discharge and suction valves and operator’s manual.
