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Details
| Model Code | FLXA21 | FLXA202 | SC450G |
|---|---|---|---|
| Area Classification |
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| Enclosure Material | Plastic (Polycarbonate) | Aluminum alloy die cast with epoxy coating (Standard offering) Aluminum alloy die cast with urethane or high anti corrosion coating (available upon request) |
Cast Aluminum with chemically resistance coating; polycarbonate cover with polycarbonate flexible window |
| Housing Rating | IP66/ NEMA 4A/ CSA 3S | IP66 (except Canada), Type 4X (except Canada), Type 3S/4X (Canada) | IP66/ NEMA 4A/ CSA 3S |
| Power Supply | 2-wire 24VDC, Loop Powered | 2-wire 24VDC, Loop Powered | 4-Wire 110-256 VAC, Mains Power |
| Output Signal | Bi-directional HART digital communication, superimposed on mA (4-20mA) signal. | Bi-directional HART digital communication, superimposed on mA (4-20mA) signal. | Two isolated outputs of 4 to 20 mA DC with common negative. |
The model FLEXA™ two-wire analyzer is used for continuous on-line measurements in industrial installations. It offers an option for single or dual sensor measurement, making it the most flexible 2-wire analyzer available. The model FLEXA™ modular-designed series analyzer.
- One analyzer can accept any of 4 types of measurements; pH/ORP, Contacting Conductivity (SC), Inductive Conductivity (ISC) and Dissolved Oxygen (DO)
- Dual sensor measurement on a 2-wire type analyzer pH/ORP and pH/ORP, SC and SC, and DO and DO
- Modular design: replaceable sensor modules
- Redundant system on dual sensor measurement
- Variety of materials of construction: SS or Plastic
- Intuitive easy touch screen operation on 2-wire type analyzer
- Unique HMI menu structure in 12 languages
- Quick setup menu for fast and east measurement operation
- Online Sensor Wellness checking for predictive maintenance
- NEMA 4X / IP66 Enclosure
| Input Specification |
Two or four electrode measurement with square wave excitation, using max. 60 m cable and cell constants from 0.005 to 50.0 cm-1 |
|---|---|
| Input Range | Conductivity: 0 to 2000 mS/cm at 25ºC (77°F) Temperature: -20 to 140ºC (0 to 280°F) |
| Conductivity | 2 µS x K cm-1 to 200 mS x K cm-1 Accuracy: ±0.5% F.S. 1 µS x K cm-1 to 2 µS x K cm-1 Accuracy: ±1% F.S. |
| Resistivity | 0.005kΩ/ K cm-1 to 0.5MΩ/ K cm-1 Accuracy: ±0.5% F.S. 0.5MΩ/ x K cm-1 to 1MΩ/ x K cm-1 Accuracy: ±1% F.S. |
| Temperature | with Pt1000, Pb36, Ni 100 Accuracy: ± 0.3ºC with Pt100, NTC 8k55 Accuracy: ± 0.4ºC |
| Step Response | ≤7 seconds for 90% (for a 2 decade step) |
| Cable Length | Max 60 meters (200 feet). 10 meters (35 feets0 fixed sensor cable + 50 meters (165 feet) WF10 extension cable |
| Transmission Signal | Bi-directional HART digital communication, superimposed on mA (4-20 mA) signal |
| Temperature Compensation | Automatic or manual, for temperature ranges. Reference temp. programmable from 0-100°C or 30-210°F (default 25°C) |
| Calibration | Semi-automatic calibration using pre-configured OIML (KCl) standard tables, with automatic stability check. Manual adjustment to grab sample. |
| Display | Black and white, 213 x 160 pixels LCD with a touch screen |
| Housing | IP66/ NEMA 4A/ CSA 3S IP66 (except Canada), Type 4X (except Canada), Type 3S/4X (Canada) |
| Environment | Ambient Temperature: -20 to 55°C Humidity: 10 to 90% RH at 40°C (non-condensing) |
| Power Supply | Ratings; 17 to 40 V DC |
The model SC450 is designed to measure specific conductivity with contacting electrodes. This method is proven to offer very high measurement accuracy especially in pure and ultra pure water applications. The SC450 a has self tuning pre-amplifier to eliminate the measuring errors that are associated with cabling or with polarization associated with high conductivities and cell fouling. The integrity of the signal across the electrodes is monitored continuously to activate a call for maintenance or a fail message in the rare occasion that cell fouling would cause erratic readings. The standard SC450 covers almost all Conductivity Applications including all special software functions in the standard analyzers to reduce the number of configurations. This results in less inventory and less training needs for users that have multiple Conductivity applications.
- Unique touch screen operation with menu structure in 5 languages.
- Enhanced diagnostics, process treanding graphics andon-screen logbook for data storage
- Two mA-outputs and four SPDT relay contacts with display indicators
- Hart® Communications
- FM Class 1, Div.2, Group ABCD, T6 for Ta-20 to 55°C
- IP66/NEMA4X 1/2 DIN enclosure for Field Mounting and Panel Mounting
- Advanced Process Temperature Compensation
- Cell fouling monitoring
| Input specification | Two or four electrode measurement with square wave excitation, using max. 60 m cable and cell constants from 0.005 to 50.0 cm-1 |
|---|---|
| Detection method | Frequency, read-pulse position and reference voltage are dynamically optimized. |
| Input ranges | Conductivity: 0.000 μS/cm to 2000 mS/cm Minimum: 1 μS/cm (underrange 0.000 μSx C). Maximum: 200 mS/cm (overrange 2000 mS x C). Resistivity: 0.0 Ω x cm to 1000 MΩ x cm Minimum: 5 Ω x cm (underrange 0 Ω/C). Maximum: 1 MΩ x cm (overrange 1000 MΩ/C). Temperature: Pt1000: -20 to 250°C (0 to 500°F) Pt100 and Ni100: -20 to 200°C (0 to 400°F) NTC 8k55: -10 to 120°C (10 to 250°F) Pb36 NTC: -20 to 120°C (0 to 250°F) |
| Conductivity/Resitivity Accuracy | ≤0.5 % of reading |
| Temperature Accuracy | ≤0.3°C (≤ 0.4°C for PT100) |
| Step Response | ≤4 sec for 90 % (for a 2 decade step) |
| Transmission Signals | Two isolated outputs of 4 to 20 mA DC with common negative. Maximum load 600 Ω. Bi-directional HART digital communication, superimposed on mA 1 (4 to 20 mA) signal. Burn up (21.0 mA) or Burn down (3.6 mA) to signal failure accorded with NAMUR NE43. |
| Temperature compensation | Automatic or manual, for temperature ranges. Reference temp.: programmable from 0 to 100°C or 30 to 210°F (default 25°C). |
| Compensation algorithm | According IEC 60746-3 NaCl tables (default). Two independent user programmable temperature coefficients, from 0 to 3.5 %/°C (°F) by adjustment or calibration. Matrix compensation: with conductivity function of concentration and temperature. Choice out of 13 preprogrammed matrixes. |
| Display | Graphical Quarter VGA (320 x 240 pixels) LCD with LED backlight and touchscreen. |
| Contact Outputs | Four SPDT relay contacts with display indicators. Contact outputs configurable for hysteresis and delay time. |
| Contact Input | Remote range switching to 10 times the programmed range. |
| Power Supply | 85 to 265 V AC ±10 %, 47 to 63 Hz, maximum consumption 10 VA. 9.16 to 30 V DC ±15 %, maximum consumption 10 W. |
자료실
To defray energy costs, many industrial plants have their own boilers to generate steam in order to produce a portion of their energy needs. In addition to generating power, the steam may also be used directly in plant processes or indirectly via heat exchangers or steam jacketed vessels.
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