Sensor Features
Sensor housings are constructed of PEEK,
a high performance thermoplastic that provides
outstanding mechanical strength and chemical
resistance. Multiple sealing materials are used
to preserve sensor integrity over a wide range
of applications.
A large volume, dual junction saltbridge is used
to maximize the in-service time of the sensor.
The annular junction provides a large surface
area to minimize the chance of fouling. Large
electrolyte volume and dual reference junction
minimizes contamination of the reference
solution. The replaceable saltbridge allows for
easy sensor regeneration.
The reference element of this sensor
is a second pH electrode immersed in
a reference buffer solution. This glass
reference system allows the sensor
to be used in applications that poison
conventional pH sensors.
An integral preamplifier is encapsulated
in the body of the sensor. This creates a low
impedance signal output which ensures stable
readings in harsh environments, and maximize
the distance between sensor and transmitter.
Sensor diagnostics are used to alarm the user
in the event of electrode breakage, loss
of sensor seal integrity, or integral
temperature sensor failure.
Sensor electrodes can be user-specified
to ensure measurement reliability and
maximum sensor lifetime. The type of glass
used in the pH electrode can be selected for
optimal performance. The metal electrode
used for ORP measurements can be platinum
or gold, depending on chemical makeup
of the process solution.
Transmitter Features
The microprocessor-based
transmitter is loop-powered and
fully isolated for high service
reliability. The transmitter includes
devices to protect the system from
power surge and brownout events.
The large, high contrast, super-twist
display provides excellent readability
over a wide operating temperature
range, even in low light conditions.
The main display line consists
of large, segmented characters with
measurement units. The secondary
display line utilizes easily readable
dot matrix characters for clear display
of calibration and diagnostic messages.
Two of four measured parameters
may be displayed simultaneously.
Four-button programming provides
intuitive navigation through the menu
driven user interface. The 4 to 20 mA
transmitter output can be configured
to represent any portion of
the measurement range.
Output HOLD, ALARM and
SIMULATION features provide
the user with complete control
of the system output under any
condition.
Diagnostic messages provide
a clear description of system
condition, which eliminates
confusing error codes that must be
looked up in the operator’s manual.
The flexible two-point and sample
calibration options include auto-buffer
recognition from thirteen built-in buffer
tables. Manual override of the automatic
buffer values allows the user to
customize calibration values. To ensure
high accuracy, all calibration methods
include stability monitors that check
temperature and main parameter
stability before accepting data.
SPECIFICATIONS
PHE-45P and ORE-45P Sensor Sensor Cable: 3 m (10') Measuring Range: PHE-45P: 0 to 14.00 pH ORE-45P: -1000 to 2000 mV Sensitivity: 0.002 pH, 0.2 mV (ORP) Stability: 0.02 pH or 2 mV per 24 hours, non-cumulative Wetted Materials: PHE-45P: PEEK, ceramic, titanium, glass, FKM, EDPM (316 stainless steel with 316SS body option) ORE-45P: PEEK, ceramic, titanium, glass, FKM, EDPM, platinum or gold Temperature Compensation: Pt1000 Sensor Cable: 6 Conductor plus 2 shields Temperature Range: -5 to 95°C (23 to 203°F) Pressure Range: 0 to 100 psig Maximum Flow Rate: 3 m (10') per second Sensor to Transmitter Distance: 914 m (3000') Mounting Options: 1 NPT convertible Weight/Shipping Weight: 0.45 kg (1 lb)
PHTX-45 Transmitter Enclosure: NEMA 4X, IP65, polycarbonate, stainless steel hardware, weatherproof and corrosion resistant, 112 H x 112 W x 89 mm D (4.4 x 4.4 x 3.5") Mounting Options: Wall, panel, pipe, Din rail, integral-sensor Conduit Openings: 2-PG9 openings, 1 to 1 NPT center opening, cord grips and plug included Weight/Shipping Weight: 0.45 kg (1 lb) Display: Large, high-contrast, super-Twist (STN) LCD; 4-digit main display with 19.1 mm (0.75") seven-segment character, 12-digit secondary display, 7.6 mm (0.3") 5 x 7 dot matrix character Keypad: 4-key membrane type with tactile feedback, polycarbonate with UV coating, integral EMI/static shield and conductivity coated window Ambient Temperature: Service: -20 to 60°C (-4 to 140°F) Storage: -30 to 70°C (-22 to 158°F) Ambient Humidity: 0 to 95%, non-condensing Location: Designed for hazardous and non-hazardous areas EMI/RFI Influence: Designed to EN61326-1 Voltage Range: 16 to 35 Vdc (two-wire device) Output Isolation: 600 V galvanic isolation Transmitter Cable Type: Belden twisted-pair, shielded Filter: Adjustable 1 to 99 seconds additional damping to 90% step input Temperature Input: Selectable Pt1000 or Pt100, automatic compensation
PHE-45P Performance Displayed Parameters: Main Input: 0 to 14.00 pH; Sensor Voltage: ±500 mV; Loop Current: 4 to 20 mA; Sensor Temperature: -10 to 110°C (14 to 230° F) Main Parameter Range: 0 to 14.00 pH Input Impedance: Greater than 1013 Ω Repeatability: 0.1% of or better Sensitivity: 0.05% of span Non-Linearity: 0.1% of span Stability: 0.1% of span per 24 hours, non-cumulative Warm-Up Time: 4 seconds to rated performance Supply Voltage Effects: ±0.05% span Transmitter Response Time: 4 seconds to 90% of step input at lowest setting Temperature Drift: Span or zero, 0.02% of span/°C Sensor to Transmitter Distance: 914 m (3000') w/preamp, 9.1 m (30') w/o preamp
