The Model P33 displays measured pH (or ORP) and temperature either separately or on/off" status. The simple keypad and logical menu structure make this analyzer easy to use. Menu screens guide you through setup, calibration, operation, and test/maintenance functions. The Model P33 can be used with any GLI Differential Technique pH or ORP sensor, or any conventional combination electrode. For temperature compensation, the P33 accepts a Pt 1000 RTD, Pt 100 RTD or NTC 300 ohm thermistor. Each of the two isolated analog outputs can be set to 0-20 mA or 4-20 mA, and assigned to represent the measured pH (or ORP) or temperature. During calibration, both outputs can be held at their last measured values, transferred to preset values, or remain active
Features / Benefits
The Model P33 displays measured pH (or ORP) and temperature either separately or together. Both analog outputs can also be shown. Front panel red LEDs indicate relay "on/off" status.
Backlit LCD Readout
The two-line, 16 character backlit LCD provides excellent viewing contrast under all lighting conditions.
Panel-mount 1/4 DIN Case with NEMA 4X Front Panel
The P33 is housed in a 1/4 DIN plastic case that features a NEMA 4X front panel.
Two-line by 16 character backlit LCD
NOTE: The measured pH (or ORP) and temperature can be displayed separately or together on one screen. Both analog output values are shown together on one screen.
pH: -2.0 to 14.0 pH or -2.00 to 14.00 pH
ORP: -2100 to +2100 mV
Temperature: -4.0 to 392.0°F or -20.0 to +200.0°C
Analog Outputs (1 and 2): 0.00-20.00 mA or 4.00-20.00 mA
Operation: -4 to +140°F (-20 to +60°C); 0 to 95% relative humidity, non-condensing
Storage: -22 to +158°F (-30 to +70°C); 0 to 95% relative humidity, non-condensing
Types/Outputs: Two electromechanical relays; SPDT (Form C) contacts; U.L. rated 5A
115/230 VAC, 5A @ 30 VDC res.
Operational Mode: Each relay (A and B) can be driven by the measured pH (or ORP) or temperature
Control: Settings for high/low phasing, setpoint, deadband, overfeed timer, off delay, and on delay
Alarm: Settings for low alarm point, low alarm point deadband, high alarm point, high alarm point deadband, off delay, and on delay
Status: Not configurable; relay only activates when a diagnostic WARNING condition exists
Timer: Relay is activated by user-set interval and time duration values to control a GLI sensor cleaning system
Indicators: Relay A and B LEDs indicate respective relay status
Automatic from 14.0 to 230.0°F (-10.0 to +110.0°C) with selection for NTC 300 ohm thermistor (used in GLI Differential sensors), Pt 1000 ohm RTD or Pt 100 ohm RTD temperature element, or manually fixed at a user-entered temperature; additional selectable temperature correction factors (ammonia, morpholine or user-set pH/°C linear slope) for pure water automatic compensation from 0.0-50.0°C )
GLI Differential Technique Sensor: 3000 ft. (914 m) maximum
Conventional Comb. Electrode w/Preamp: 985 ft. (300 m) maximum
Conventional Comb. Electrode w/o Preamp: 100 ft. (30 m) maximum with electrode cable capacitance of less than 30 pF/foot
90-130 VAC, 50/60 Hz. (10 VA max.) or 190-260 VAC, 50/60 Hz. (10 VA max.)
2-point Buffer (for pH only): Automatic calibration and buffer recognition using two buffers from a selected buffer set
1-point Sample (for pH or ORP): Automatic calibration and buffer recognition using one buffer from a selected buffer set
NOTE: When using buffers that are not included in either of the analyzer buffers sets, use only the 2-point Sample method or 1-point Sample Method respectively for calibration.
Two isolated 0/4-20 mA; each with 0.004 mA (12-bit) resolution and capability to drive up to
600 ohm loads
NOTE: Each output can be assigned to represent the measured pH (or ORP) or temperature. Parameter values can be entered to define the endpoints at which the minimum and maximum mA output values are desired (range expand). During calibration, both outputs can be selected to hold their present values, transfer to preset values to operate control elements by an amount corresponding to those values, or remain active to respond to the measured value.
RS-232: Enables configuration and retrieval of measured data for one analyzer using IBM-compatible PC and GLI optional software tool kit
HART Protocol: Enables configuration and retrieval of measured data for multiple analyzers over a communication link using appropriate hand-held terminal or data system with HART software
Memory Backup (non-volatile)
All user settings are retained indefinitely in memory (EEPROM)
European Community EMC: Certified CE compliant for conducted and radiated emissions (EN 50081-2) and immunity (EN 50082-2)
Analyzer Performance (Electrical, Analog Outputs)
Accuracy: ± 0.1% of span
Sensitivity: ± 0.05% of span per 24 hours, non-cumulative
Repeatability: ± 0.01% of span or better
Temperature Drift: Zero and Span: < 0.03% of span per °C
Enclosure: Polycarbonate with NEMA 4X front panel; general purpose; two brackets for panel mounting
Mounting Configurations: Panel mounting
Net Weight : 1.7 lbs. (0.8 kg) approximately