592

Process Analysis Systems

Chem Energy Pharm Food Water

Stratos® FF 2231 X pHAnalyzer with FOUNDATION fieldbus interface, simultaneous measurement of pH values, ORP, and temperature, application in hazardous and safe areas

Warranty

3 years!

Warranty Defects occurring within 3 years

from delivery date shall be remedied free of charge at our plant (carriage

and insurance paid by sender). Sensors and accessories: 1 year

Display Simultaneous display of pH value/ORP and temperature; unit symbols as plain text. Icons supply operating messages and signal unusual operating states. Mode indicators show the current operating mode. Conspicuous alarm signaling with red, blinking LED. Calibration Reliable memory due to integrated calibration timer. Automatic electrode standardization with check of response time and drift by Knick Calimatic®. All conventional buffer sets are available. Alternatively, also manual calibration or direct input of zero point and slope for service purposes. Display of the sensor data after every calibration. Evaluation of the electrode status with Sensoface®. Sensocheck® sensor monitoring Maximum reliability due to continuous monitoring of glass and reference electrode. Recognition of electrode defects, error indication, and alarm triggering. FOUNDATION Fieldbus interface All device parameters can be read and written. Cyclic transmission of 3 measured values (select from pH value, ORP, temperature, glass impedance, reference impedance). Product calibration can be performed via the bus by using an operating tool.

Facts – application also in hazardous locations– FOUNDATION Fieldbus to EN 61158-2

(IEC 1158-2)– sturdy, tightly sealed enclosure– wall, post/pipe, or panel mounting– easy installation with pre-assembled

enclosure and screw terminals– optical alarm signaling by red LED– Sensocheck® continuous sensor

monitoring– GainCheck® automatic device self-test– international user interface with icons– large, clear measured-value display– temperature indication either in °C or °F– additional mode indicators for:

• measuring mode • calibration mode • alarm • bus communication

– calibration timer– supply via the bus– product calibration via the bus– 3-year warranty

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Product Line Order No.

Stratos® Fieldbus 2231 X pH field device for measuring pH/ORP values; equipped for the standardized FOUNDATION Fieldbus communication

2231 X pH

Test Sockets, Connector Plugs and Special Cables Order No.

VP8 connector plug ZU 0721

VP8-ST cable (both ends with VP socket)

length: 3 m length: 5 m length: 10 m

ZU 0710 ZU 0711 ZU 0712

Mounting Accessories (see page 614) Order No.

Pipe-mount kit ZU 0274

Panel-mount kit ZU 0275

Protective hood ZU 0276

594

Process Analysis Systems

Chem Energy Pharm Food Water

Stratos® FF 2231 X pH

Stratos® FF 2231 X pH

pH measurement Control room

pH, ORP Sensocheck®

Temperature

Glass

Reference

Pt 100 Pt 1000 NTC 30 kohms

Connection

EEx ia IIC EEx ib IIC

H1 Fieldbus HSE Fieldbus

HostLinking Device

†

Terminal Assignments

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Effective ranges pH value –2.00 … 16.00 mV value –1500 … 1000 mV temperature –20.0 … +200.0 °C (–4 … +392 °F) (for Pt 100, Pt 1000) –20.0 … +150.0 °C (–4 … +302 °F) (for NTC 30 kohms) –10.0 … +130.0 °C (–4 … +266 °F) (for NTC 8.55 kohms)

Glass electrode input!} input resistance > 0.5 x 10!‡ ohms input current < 2 x 10–!‡ A$}

Reference electrode input!}

input resistance > 1 x 10!= ohms input current < 1 x 10–!= A$}

Measurement error1) 2) 3) pH value < 0.02 TC: 0.002 pH/K mV value < 1 mV TC: 0.1 mV/K

Temperature input Pt 100 / Pt 1000 / NTC 30 kohms / NTC 8.55 kohms (Mitsubishi)

Measurement error1) 2) 3) temperature < 0.5 K (< 1 K for Pt 100; < 1 K for NTC > 100 °C)

Temperature compensation of process medium

linear –19.99 … 19.99 %/K (reference temp. 25 °C)

Sensor monitoring Sensocheck® monitoring of glass and reference electrode

Sensor standardization pH*}

pH calibration

Operating modes BUF calibration with Calimatic® automatic buffer recognition: Buffer sets: -00- Knick 2.00/4.01/7.00/9.21 -01- Mettler Toledo 2.00/4.01/7.00/9.21 -02- Merck/Riedel de Haen 2.00/4.00/7.00/9.00/12.00 -03- Ciba (94) 2.06/4.00/7.00/10.00 -04- NIST technical 1.68/4.00/7.00/10.01/12.46 -05- NIST standard 1.679/4.006/6.865/9.180 -06- HACH 4.00/7.00/10.18 -07- WTW technical buffers 2.00/4.01/7.00/10.00 MAN manual calibration with input of individual buffer values DAT data entry of pre-measured electrodes PRD product calibration

Zero adjustment ±200 mV (for ISFET)

Max. calibration range asymmetry potential: ±60 mV; slope: 80 … 103 % (47.5 … 61 mV/pH)

Calibration timer 0 … 9999 h

Power output for ISFET adapter +3 V / 0.5 mA, –3 V / 0.5 mA

Display LC display, 7-segment measurement display: pH/mV value, temperature main display character height 17 mm, unit symbols 10 mm secondary display character height 10 mm, unit symbols 7 mm Sensoface® 3 status indicators (friendly, neutral, sad face) status display 5 mode indicators “measurement”, “calibration”, “alarm”, “communication”, “configuration” 18 further icons for configuration and messages

Specifications

596

Process Analysis Systems

Chem Energy Pharm Food Water

Stratos® FF 2231 X pH

Alarm indication red LED in case of alarm or HOLD, user defined

Keypad 5 keys: [meas] [cal] [?] [±] [enter], “conf“ via [meas] + [cal]

FF communication FF-H1 (FOUNDATION Fieldbus) via coupler to HSE fieldbus/PLC, PC, DCS physical interface to EN 61158-2 (IEC 1158-2) communication model certified to ITK 4.6 1 resource block 1 transducer block 3 AI function blocks Selectable: pH, ORP, temp, glass impedance, ref. impedance, asymmetry potential, slope supply voltage: FISCO 9 … 17.5 V (trapezoidal or rectangular characteristic) 9 … 24 V (linear characteristic) current consumption: < 12.7 mA max. current in case of fault (FDE): < 21.4 mA

Explosion protection ATEX: II 2(1)G EEx ia IIC T4/FISCO FM: IS, Class I Div 1, Group A, B, C, D T4 NI, Class I Div 1, Group A, B, C, D T4

DD (Device Description) acyclic access: all bus parameters, parameters in the function blocks, configuration and sensor data product calibration via the operating tool

Ambient temperature Transport/storage

–20 … +55 °C –20 … +70 °C

Electromagnetic compatibility

EN 61 626 and FCC rules part 15/B class A emitted interference: Class B (residential area) immunity to interference: Industry

Enclosure material: PBT protection: IP 65/NEMA 4X (USA, Canada: indoor use only) dimensions: W x H x D: 144 x 144 x 105

Weight approx. 1 kg

*) user-defined 1) to IEC 746 Part 1, at nominal operating conditions 2) ±1 count 3) plus sensor error 4) doubles every 10 K

Specifications – continued

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Fiel

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AI Function Block 1

AI Function Block 3

AI Function Block 2

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Stratos® FF 2231 X pH

Resource Block

Temp.

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Slope

pH

ORP

Temperature

RMeas

RReference

Asymmetry potential

Slope

pH

ORP

Temperature

RMeas

RReference

Asymmetry potential

Slope

pH

ORP

Temperature

RMeas

RReference

Asymmetry potential

Communication Model

pH

ORP