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- FLXA21 Modular 2-Wire pH/ORP Analyzer
FLXA21 Modular 2-Wire pH/ORP Analyzer
Model FLXA21
Modular 2-Wire pH/ORP Analyzer
Product Information
The FLXA21 two-wire liquid analyzer offers single or dual sensor measurement. The modular-designed analyzer offers 4 kinds of measurements – pH/ORP (oxidation-reduction potential), contacting conductivity (SC), inductive conductivity (ISC) or dissolved oxygen (DO) – with the respective sensor module.
The FLXA21 pH/ORP Analyzer with built-in standard calibration table and temperature compensation and stability check functions can perform high-precision pH measurement. It can also measure the temperature and oxidation-reduction potential (ORP) in addition to pH.
The diagnostic function of the sensor constantly measures the impedance, asymmetric potential, slope, etc. and continuously diagnoses the conditions of the sensor, such as the contamination and damage of the electrode, burnout, and a decline in the measured liquid level. In addition, it can save the latest five calibration results and predict the times when maintenance and calibration are needed.
For the wide range of industrial environment, the FLXA21 pH/ORP Analyzer is designed with the enclosure of plastic, stainless steel or stainless steel with corrosion resistant coating.
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General
Specification for FLXA21 |
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General Specification for pH/ORP Sensors |
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User's Manual for FLXA21 |
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Selection Guide for pH/ORP Analyzer |
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Click here to request a technical document for pH/ORP Analyzers |
Features
| * | Dual sensor measurement on 2-wire type analyzer; pH/ORP sensor and pH/ORP sensor |
| * | Calculated data from dual sensor measurement |
| * | Redundant system on dual sensor measurement |
| * | Easy touch screen operation on 2-wire type analyzer |
| * | Simple HMI menu structure in 12 languages (English, Chinese, Czech, French, German, Italian, Korean, Polish, Portuguese, Russian, Spanish and Japanese) |
| * | Quick setup menu for immediate measurement |
| * | On-line sensor checking and indication of sensor wellness |
| * | HART communications |
| * | Enclosure – plastic, stainless steel or stainless steel with corrosion-resistant coating |
Specifications
| Measuring principle | Glass electrode method |
| Input ranges | pH: -2 to 16 pH ORP: -1500 to 1500 mV rH: 0 to 100 rH Temperature: -30 to 140℃ (Pt1000) |
| Transmission signals | General: One output of 4 to 20 mA DC.
Bi-directional HART® digital communication,
superimposed on mA (4 to 20 mA) signal. Burn out function: Burn up (22.0 mA) or burn down (3.6 mA) to signal failure accorded with NAMUR NE43. |
| Temperature compensation Function | Automatic or manual. Compensation to Nernst equation. Process compensation by configurable temperature coefficient, NEN6411 for water or strong acids/bases or programmable matrix. |
| Calibration | Semi-automatic 1 or 2 point calibration using pre-configured NIST, US, DIN buffer tables 4, 7 & 9, or with user defined buffer tables, with automatic stability check. Manual adjustment to grab sample. |
| Display | Black/White 213 x 160 pixels) LCD with a touch screen. |
| Analyzer Structure | Module structure |
| Housing | Case: Plastic (Polycarbonate), stainless steel without
painting, stainless steel with epoxy coating, stainless steel with urethane coating Window: Polycarbonate (flexible) Protection: NEMA4X, IP66 |
| Environment and operation conditions | Ambient Operating Temperature : -20 to + 55℃ Storage Temperature : -30 to + 70℃ Humidity : 10 to 95% RH (Non-condensing) |
| Regulatory Compliance | Safety : EN61010-1, CSA C22.2 No.61010-1 EMC : EN61326-1 Class A,Table 2 (For use in industrial locations), EN61326-2-3, AS/NZS CISPR11, Korea Electromagnetic Conformity Standard Installation altitude: 2000 m or less Category based on IEC 61010: I Pollution degree based on IEC 61010: 2 |
| Explosion-proof | ATEX, IECEx, FM, CSA |
| Power Supply | Nominal 24 V DC loop powered system One (1) Sensor module (1 input): 16 to 40V DC Two (2) Sensor modules (2 inputs): 22.8 to 40V DC |
| Conduit Adapter | G1/2, 1/2NPT, M20 x 1.5 |
| Weight | Approx. 1 kg (Plastic housing), Approx. 2 kg (Stainless steel housing) |
Performance (Accuracy)
(The specifications are expressed with simulated inputs.)
| pH | Linearity; ±0.01 pH, Repeatability; ±0.01 pH, Accuracy: ±0.01 pH |
| ORP | Linearity; ±1 mV, Repeatability; ±1 mV, Accuracy: ±1 mV |
| Temperature | Pt1000, 6k8, PTC10k,
NTC 8k55, 3k Balco,
PTC500: Linearity; ±0.3℃, Repeatability; ±0.1℃, Accuracy: ±0.3℃ Pt100: Linearity; ±0.4℃, Repeatability; ±0.1℃, Accuracy; ±0.4℃ |
