pH and ORP Analyzer P53A2A1N

Display:- Graphic dot matrix LCD, 128 x 64 pixels with LED backlighting; 1/2" main character height; 1/8" auxiliary information character height; menu screens contains up to six text lines.

Measurement Ranges:-

1. pH: -2.0 to 14.0
2. ORP: .2100 to +2100 mV
3. Temperature: -4.0 to +392.0 deg. F
4. Analog Output: 0.00-20.00 mA

Ambient Conditions:-

1. Operation: -4 to +140 deg. F; 0 to 95% relative humidity, non-condensing
2. Storage: -22 to 158 deg. F; 0 to 95% relative humidity, non-condensing

Relays:-

1. Types/Outputs:- 2 or 4 electromechanical relays; SPDT (form C) contacts; U.L. rated 5A 115/230 VAC , 5A @ 30 VDC resistive
2. Operational Mode:- Each relay (a, B, C and ) can be assigned to be driven by the measured pH (or ORP) or temperature
3. Function Modes:-
4. Control: Settings for high/low phasing, setpoint, deadband, overfeed timer, off delay, and on delay
5. Alarm: Settings for low alarm point, low alarm point deadband, high alarm point, high alarm point deadband, off delay, and on delay
6. Status: Not configurable; relay only activates when a "fail" diagnostic WARNING condition exists
7. Timer: Relay is activated by user-set interval and time duration to control GLI sensor cleaning sysytem
8. Indicators: Relay annunciators (A,B,C and D) indicate respective relay status

Temperature Compensation:- Automatic from 14.0 to 230 deg. F with selection for NTC 3600 ohm thermistor, Pt 1000 ohm RTD or Pt 100 RTD, or manually fixed at a user-entered temperature; additional selectable temperature correction factor available for pure water compensation from 0.0 to 50.0 deg. C

Sensor-to-Analyzer Distance:-

1. GLI Differential Technique Sensor: 3000 ft. maximum
2. Electrode with Preamplifier: 985 ft. maximum
3. Electrode without Preamplifier: 100 ft. maximum with electrode cable capacitance of less than 30 p/foot

Power Requirements:- 90-130 VAC, 50/60 Hz or 180-260 VAC, 50/60 Hz

Calibration Methods:-

1. 2-point Buffer method (pH) only): automatic calibration and buffer recognition using two buffers from a selected buffer set
2. 1-point Buffer Method (pH only): automatic calibration recognition using one buffer from a selected buffer set
3. 2-point Sample method (pH only): enter known values of two samples or two pH buffers
4. 1-point Sample method (pH or ORP): enter known values of one sample, one pH buffer or, for ORP measurement, one reference solution

Analog Outputs:- Two isolated 0/4-20 mA outputs; each with 0.004 mA (12-bit) resolution and capability to drive upt o 600 ohm loads

Communication:-

1. RS-232: enables configuration and retrieval of measured data for one analyzer using IBM-compatible PC and GLI optional software tool kit
2. 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)

Analyzer Performance (Electrical, Analog Outputs):-

1. Accuracy: 0.1% of span
2. Stability: 0.05% of span per 24 hrs., non-cumulative
3. Repeatability: 0.1% of span or better
4. Temperature Drift:- Zero/Span: less than 0.03% of span per deg. C

Mechanical:-

1. Enclosure: NEMA 4X; polycarbonate face panel, epoxy-coated high-quality cast aluminum door and case with four 1/2" conduit holes, nylon mounting bracket, and stainless steel hardware
2. Mounting Configurations: Panel, surface, and pipe mounting