PH450G 4-laidis pH/ORP analizatorius
Novatoriškas PH450G 4-laidis pH/ORP analizatorius turi liečiamą ekraną bei yra patikimas aukštos kokybės analizės prietaisas. Be kitų pramonės šakų, dažniausiai šį modelį galime sutikti vandens valymo įrenginiuose. Jis turi 4 išėjimus, kurie gali būti užprogramuoti pagal įvairius poreikius, nuo aliarmo iki PID. Jutiklio tikrinimo funkcija yra standartiškai įtraukta į kiekvieną prietaisą.
Pagrindiniai šių keitiklių parametrai nurodyti žemiau pateiktoje lentelėje:
| 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 deg C (Pt1000) |
| Transmission signals | General: Two isolated outputs of 4 to 20 mA DC with common negative. Maximum load 600 Ω. Bi-directional HART® digital communication, superimposed on mA1 (4 to 20 mA) signal. Output function: Linear or Non-linear (21-step table) output for pH, temperature, ORP or rH. Control function: PID control. Burn out function: Burn up (21.0 mA) or burn down (3.6 mA) to signal failure accorded with NAMUR NE43. Hold: The mA-outputs are frozen to the last/fixed value during calibration/commissioning. |
| Contact outputs | General: Four SPDT relay contacts with display indicators. Switch capacity: Maximum values 100 VA, 250 V AC, 5 A Maximum values 50 W, 250 V DC, 5 A Status: High/Low process alarms, selected from pH, ORP, rH and temperature. Configurable delay time and hysteresis. Failure annunciation. Control function: On/Off, PID duty cycle or pulsed frequency control. Wash: Contact can be used to start manual- or interval time wash cycles. Hold: Contact can be used to signal the Hold situation. Fail: Contact S4 is programmed as fail-safe contact. |
| Contact input | Remote wash cycle start. |
| 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 | Graphical Quarter VGA (320 x 240 pixels) LCD with LED backlight and touch screen. |
| Housing | Cast Aluminum housing with chemically resistant coating; Polycarbonate cover with Polycarbonate flexible window, Protection IP66/NEMA 4X/CSA Type 3S |
| Power supply | PH450G-A: Ratings; 100 to 240 V AC, Acceptable range; 90 to 264 V AC Ratings; 50/60 Hz, Acceptable range; 50 Hz ±5%, 60 Hz ±5 % Power Consumption; 15 VA PH450G-D: Ratings; 12 to 24 V DC, Acceptable range; 10.8 to 26.4 V DC Power Consumption; 10 W |
| Environment and operational conditions | Ambient temperature: -20 to 55 deg C (-5 to 130 deg F) Storage temperature: -30 to 70 deg C (-20 to 160 deg F) Humidity: 10 to 90 % RH at 40 deg C (100 deg F) (non-condensing) |
| pH input | ≤0.01 pH |
| ORP input | ≤1 mV |
| Temperature | ≤0.3 deg C (≤0.4 deg C for Pt100) |
| Step response | <4 sec for 90 % (pH 7 - pH 4) |
Visą informaciją apie šio tipo pH keitiklius galima rasti čia:
 | PH450 produkto informacija (PDF, 1,05 MB, angl. k.) |
PH202G, PH202S 2-laidis pH/ORP analizatorius
PH202 pH/ORP analizatoriai yra skirti 2-laidėms sistemoms. Jie gali būti naudojami tiek ATEX , tiek paprastose aplinkose. Galimos kelios skirtingos komunikacijos: HART, Profibus-PA ar Fieldbus protokolai. Jutiklio tikrinimo funkcija yra standartiškai įtraukta į kiekvieną prietaisą. Pritaikomumas, maži montavimo bei priežiūros kaštai yra vieni iš šito prietaiso privalumų.
Pagrindiniai šių keitiklių parametrai nurodyti žemiau pateiktoje lentelėje:
| Measuring principle | Glass electrode method |
| Input ranges | pH: -2 to 16 pH ORP: -1500 to 1500 mV rH: 0 to 55 rH Temperature: -30 to 140 deg C |
| Output ranges | pH: Min. 1 pH, Max. 20 pH ORP: Min. span 100 mV, Max. span 3000 mV rH: Min. 2 rH, Max. 55 rH Temperature: Min. 25 deg C, Max. 200 deg C |
| Output Signal | 4 to 20 mA DC loop powered, isolated from input With the possibility of 21 mA "FAIL" signal (burn up) and 3.6 mA (burn down when HART or distibutor comm. is non-used), 3.9 mA (burn down when HART or distributor comm. is used). |
| Temperature compensation | Range: -30 to 140 deg C (for 8k55 sensor -10 to 120 deg C). Sensor types: Pt100, Pt1000, 3 kΩ RTC, 5.1 kΩ PTC, 8.55 kΩ NTC, 350 Ω PTC, 6.8 kΩ PTC, 10 kΩ PTC. Automatic or manual compensation to Nernst equation. Process compensation by configurable coefficient. Adjustable ITP (Iso-thermal point of intersection). |
| Calibration | Semi-automatic, using tables in transmitter for pH 4, 7 & 9 buffer solutions, or using user-defined tables, with automatic check of measurement stability. Manual, using standard sample, by correcting reading to value of standard. Calibration by slope and asymmetry potential setting. (IEC60746-2) |
| Communication | HART®, PROFIBUS-PA, FOUNDATION Fieldbus H1 |
| Ambient temperature | -10 to 55 deg C |
| Humidity | 10 to 90 % RH (Non-condensing) |
| Explosionproof | FM, ATEX, CSA, IECEx |
| Display | Custom liquid crystal display, with a main display of 3 1/2 digits 12.5 mm high. |
| Power supply | Nominal 24 volt DC loop powered system. PH202G: 17 to 40 V PH202S: 17 to 31.5 V |
| pH- Linearity Repeatability Accuracy | ±0.01 pH ±0.01 pH ±0.01 pH |
| ORP- Linearity Repeatability Accuracy | ±1 mV ±1 mV ±1 mV |
Visą informaciją apie šio tipo PH keitiklius galima rasti čia:
| PH202 produkto informacija (PDF, 1,14 MB, angl. k.) |
Visą informaciją apie PH jutiklius galima rasti čia:
| pH jutiklių informacija (PDF, 524 KB, angl. k.) |