WIKA CPT-2x series Operating Instructions Manual
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WIKA CPT-2x series Operating Instructions Manual

WIKA CPT-2x series Operating Instructions Manual

Process pressure transmitter 4 ... 20 ma ceramic sensor
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Operating Instructions
Process pressure transmitter CPT-2x
4 ... 20 mA
Ceramic sensor
Process pressure transmitter CPT-2x

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Summary of Contents for WIKA CPT-2x series

  • Page 1 Operating Instructions Process pressure transmitter CPT-2x 4 … 20 mA Ceramic sensor Process pressure transmitter CPT-2x...

  • Page 2: Table Of Contents

    Cleaning - hygienic connection with compression nut ............ 44 Diagnosis function ......................45 Rectify faults ........................47 Exchange process module on version IP 68 (25 bar) ............. 48 Instrument repair ......................49 WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 3 Trademark ........................74 Safety instructions for Ex areas Take note of the Ex specific safety instructions for Ex applications. These instructions are attached as documents to each instrument with Ex approval and are part of the operating instructions manual. Editing status: 2018-03-05 WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 4: About This Document

    This arrow indicates a single action. Sequence of actions Numbers set in front indicate successive steps in a procedure. Battery disposal This symbol indicates special information about the disposal of bat- teries and accumulators. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 5: For Your Safety

    Arbi- trary conversions or modifications are explicitly forbidden. For safety reasons, only the accessory specified by the manufacturer must be used. To avoid any danger, the safety approval markings and safety tips on the device must also be observed and their meaning read in this oper- ating instructions manual. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 6: Eu Conformity

    Installations in Canada shall comply with the relevant requirements of the Canadian Electrical Code A Class 2 power supply unit has to be used for the installation in the USA and Canada. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 7: Product Description

    In the adjustment menu under "Info" Scope of delivery The scope of delivery encompasses: • Instrument CPT-2x • Documentation – Operating instructions CPT-2x – Characteristics test certificate – Instructions for optional instrument features – Ex-specific "Safety instructions" (with Ex versions) WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 8: Principle Of Operation

    Sensor element is the measuring cell with robust ceramic diaphragm. Measuring system pres- sure The process pressure deflects the ceramic diaphragm and causes a capacitance change in the measuring cell. This capacitance change is converted into an electrical signal and outputted as measured value via the output signal. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 9 Recessed installation The recessed installation is particularly suitable for applications with gases, vapours and clear liquids. The measuring cell seal is posi- tioned laterally as well as in addition in front. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 10 Fig. 5: Front-flush installation of the measuring cell (example: thread G1½) Seal for the process fitting Measuring cell Seal for the measuring cell Process fitting Diaphragm Completely front-flush The completely front-flush mounting is particularly suitable for ap- mounting with single seal plications in the paper industry. The diaphragm is in the pulp flow, is hence cleaned and protected against buildup. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 11 The form seal of the measuring cell protects also the glass joint. Fig. 8: Hygienic installation of the measuring cell (example: hygienic fitting with compression nut) Measuring cell Form seal for the measuring cell Gap-free seal for process fitting Process fitting Diaphragm WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 12: Supplementary Cleaning Procedures

    Transport inspection The delivery must be checked for completeness and possible transit damage immediately at receipt. Ascertained transit damage or con- cealed defects must be appropriately dealt with. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 13 Technical data - Ambient conditions" • Relative humidity 20 … 85 % Lifting and carrying With instrument weights of more than 18 kg (39.68 lbs) suitable and approved equipment must be used for lifting and carrying. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 14: Mounting

    Vibrations If there is strong vibration at the mounting location, the instrument version with external housing should be used. See chapter "External housing". WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 15: Ventilation And Pressure Compensation

    When quickly opening/closing the housing cover, the measured value can change for approx. 5 s by up to 15 mbar. For an effective ventilation, the filter element must be always free from buildup. In case of horizontal mounting, turn the housing so that the filter element points downward after the instrument is installed. This provides better protection against buildup. Caution: Do not use a high-pressure cleaner. The filter element could be dam- aged, which would allow moisture into the housing. The following paragraphs describe how the filter element is arranged in the different instrument versions. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 16 This provides better protection against buildup. Fig. 12: Position of the filter element - Ex-d version Rotatable metal ring Filter element Instruments with absolute pressure have a blind plug mounted instead of the filter element. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 17: Process Pressure Measurement

    Fig. 14: Position of the filter element - gastight leadthrough Filter element Gas-tight leadthrough Process pressure measurement Measurement setup in Keep the following in mind when setting up the measuring system: gases • Mount the instrument above the measuring point Possible condensation can then drain off into the process line. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 18 Siphon in U or circular form Pipeline A protective accumulation of water is formed through condensation in the pipe bends. Even in applications with hot steam, a medium temperature < 100 °C on the transmitter is ensured. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 19: Level Measurement

    Mount the instrument below the min. level • Do not mount the instrument close to the filling stream or emptying area • Mount the instrument so that it is protected against pressure shocks from the stirrer Fig. 18: Measurement setup for level measurement WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 20: External Housing

    1. Mark the holes according to the following drilling template 2. Fasten wall mounting plate with 4 screws 90 mm (3.54") 70 mm (2.76") 8 mm (0.12") (0.32") Fig. 20: Drilling template - wall mounting plate WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 21: Connecting To Power Supply

    In the case of instrument housings with self-sealing NPT threads, it is not possible to have the cable entries screwed in at the factory. The free openings for the cable glands are therefore covered with red dust protection caps as transport protection. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 22: Connecting

    4. Remove approx. 10 cm (4 in) of the cable mantle, strip approx. 1 cm (0.4 in) of insulation from the ends of the individual wires 5. Insert the cable into the sensor through the cable entry WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 23: Single Chamber Housing

    10. Reinsert the display and adjustment module, if one was installed 11. Screw the housing lid back on The electrical connection is finished. Single chamber housing The following illustration applies to the non-Ex as well as to the Ex-ia version. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 24: Housing Ip 66/Ip 68 (1 Bar)

    Housing IP 66/IP 68 (1 bar) Wire assignment, con- nection cable Fig. 23: Wire assignment in permanently connected connection cable Brown (+) and blue (-) to power supply or to the processing system Shielding WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 25: External Housing With Version Ip 68 (25 Bar)

    External housing Electronics and connec- tion compartment for power supply 4...20mA 6 7 8 Fig. 25: Electronics and terminal compartment Electronics module Cable gland for voltage supply Cable gland for connection cable, transmitter WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 26: Switch-On Phase

    5 s: • Internal check of the electronics • Indication of a status message on the display or PC • Output signal at instruments with current output jumps to the set fault current WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 27 5 Connecting to power supply Then the actual measured value is outputted to the signal cable. The value takes into account settings that have already been carried out, e.g. default setting. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 28: Set Up With The Display And Adjustment Module

    Note: If you intend to retrofit the instrument with a display and adjustment module for continuous measured value indication, a higher lid with an inspection glass is required. Adjustment system Fig. 29: Display and adjustment elements LC display Adjustment keys WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 29: Measured Value Indication

    In the third view, the selected measured value as well as a second selectable value, e.g. the temperature, are displayed. With the "OK" key you move (during the initial setup of the instrument) to the selection menu "Language". WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 30: Parameter Adjustment - Quick Setup

    "Extended adjustment". Main menu The main menu is divided into five sections with the following func- tions: Setup: Settings, e.g., for measurement loop name, application, units, position correction, adjustment, signal output Display: Settings, e.g., for language, measured value display, lighting WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 31 Depending on the selected application, different subchapters in the following adjustment steps are important. There you can find the individual adjustment steps. Enter the requested parameters via the appropriate keys, save your settings with [OK] and jump to the next menu item with the [ESC] and the [->] key. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 32 20 % of the nominal measuring range, then no position correction is possible. Setup - Adjustment CPT-2x always measures pressure independently of the process vari- able selected in the menu item "Application". To output the selected WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 33 1. Select the menu item "Setup" with [->] and confirm with [OK]. Now select with [->] the menu item "Zero adjustment" and confirm with [OK]. 2. Edit the mbar value with [OK] and set the cursor to the requested position with [->]. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 34 [OK]. The span adjustment is finished. Proceed as follows: Setup - Min. adjustment Level 1. Select the menu item "Setup" with [->] and confirm with [OK]. Now select with [->] the menu item "Adjustment", then "Min. adjustment" and confirm with [OK]. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 35 - and the indication or output of the volume is required. Corresponding linearization curves are preprogrammed for these vessels. They represent the correlation between the level per- centage and vessel volume. The linearization applies to the measured value indication and the current output. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 36 Releasing the sensor adjustment is also possible in any menu item by entering the PIN. Caution: With active PIN, adjustment via PACTware/DTM and other systems is also blocked. This menu item enables the setting of the requested national lan- Display - Language guage. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 37 The display and adjustment module has a backlight for the display. In this menu item you can switch on the lighting. You can find the required operating voltage in chapter "Technical data". In delivery status, the lighting is switched on. Diagnostics - Device In this menu item, the device status is displayed. status WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 38 During simulation, the simulated value is outputted as 4 … 20 mA current value and with instruments 4 … 20 mA/HART in addition as digital HART signal. The status message within the context of the as- set management function is "Maintenance". WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 39 Integration time Linearization Linear Current output Current output - Mode Output characteristics 4 … 20 mA Reaction when malfunctions occur ≤ 3.6 mA Current output - Min./Max. 3.8 mA 20.5 mA Lock adjustment Released WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 40 The following data or settings for adjustment of the display and ad- justment module are saved: • All data of the menu "Setup" and "Display" • In the menu "Additional adjustments" the items "Reset, Date/Time" WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 41 4 mA (0 %) and 20 mA (100 %) of the current output refer to. If the measuring cell temperature is selected as measured variable, then e.g. 0 °C refers to 4 mA and 100 °C to 20 mA. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 42 PC. Info - Sensor character- In this menu item, the features of the sensor such as approval, pro- istics cess fitting, seal, measuring range, electronics, housing and others are displayed. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 43: Saving The Parameterisation Data

    In the display and adjust- If the instrument is equipped with a display and adjustment module, ment module the parameter adjustment data can be saved therein. The procedure is described in menu item "Copy device settings". WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 44: Diagnostics And Servicing

    1. Loosen compression nut and remove the pressure transmitter from the welded socket 2. Remove the O-ring seal for the process fitting 3. Clean the diaphragm with brass brush and cleaning detergent 4. Loosen the hexagon and remove the process component from the process fitting WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 45: Diagnosis Function

    Send instrument for repair Communication error • • F260 Error in the calibration carried out in the Exchanging the electronics • factory Send instrument for repair Error in the calibration • Error in the EEPROM WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 46 Maintenance Code Cause Rectification Text message • • M500 The data could not be restored during Repeat reset • the reset to delivery status Load XML file with sensor data into Error in the delivery status the sensor WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 47: Rectify Faults

    Reaction after fault recti- Depending on the reason for the fault and the measures taken, the fication steps described in chapter "Setup" must be carried out again or must be checked for plausibility and completeness. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 48: Exchange Process Module On Version Ip 68 (25 Bar)

    4. Mount the new process module on the measuring point 5. Plug the connector back in 6. Mount the cable assembly on the process module and turn it to the desired position 7. Tighten the fixing screw with the hexagon key wrench The exchange is finished. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 49: Instrument Repair

    Complete one form for each instrument • If necessary, state a contamination • Clean the instrument and pack it damage-proof • Attach the completed form and possibly also a safety data sheet to the instrument WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 50: Dismount

    Pass the instrument directly on to a spe- cialised recycling company and do not use the municipal collecting points. These may be used only for privately used products according to the WEEE directive. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 51: Supplement

    Ʋ Sealing, cable gland Ʋ Blind plug, cable gland Ʋ Seal between housing and housing lid Silicone SI 850 R, NBR silicone-free Ʋ Inspection window in housing cover Polycarbonate, UL746-C listed (with Ex-d version: glass) WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 52 Ʋ Plastic housing 10 Nm (7.376 lbf ft) Ʋ Aluminium/Stainless steel housing 50 Nm (36.88 lbf ft) Input variable The specifications are only an overview and refer to the measuring cell. Limitations due to the material and version of the process fitting as well as the selected pressure type are possible. The specifications on the nameplate apply. Between transmitter and external electronics housing. Fix connected to the sensor. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 53 200 bar/20000 kPa 0 bar abs. (only for measuring cell ø 28 mm) Nominal measuring ranges and overload capacity in psi Nominal range Overload capacity, max. pressure Overload capacity, min. pressure Gauge pressure WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 54 0 … 300 psi 1500 psi 0 psi 0 … 900 psi +2900 psig 0 psi 0 … +1450 psig 2900 psig 0 psi (only for measuring cell ø 28 mm) Adjustment ranges Specifications refer to the nominal measuring range, pressure values lower than -1 bar cannot be WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 55 Damping (63 % of the input variable), 0 … 999 s adjustable Displayed value Pressure Dynamic behaviour output Dynamic characteristics depending on medium and temperature The indication values can be assigned individually. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 56 Applies to the digital signal output (HART, Profibus PA, Foundation Fieldbus) as well as to the ana- logue current output 4 … 20 mA and refers to the set span. Turn down (TD) is the ratio "nominal measuring range/set span". The specified values correspond to the value F in chapter "Calculation of the total deviation". WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 57 Additional factor through Turn Down The additional factor FTD through Turn down is calculated according to the following formula: = 0.5 x TD + 0.5 In the table, example values for typical Turn downs are listed. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 58 -20 … +80 °C (-4 … +176 °F) tion cable PUR Version IP 68 (25 bar), connection -20 … +60 °C (-4 … +140 °F) -20 … +60 °C (-4 … +140 °F) cable PE WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 59 100 °C 130 °C -40 °C (212 °F) (266 °F) (-104 °F) -40 °C (-104 °F) Fig. 36: Temperature derating CPT-2x, version up to +130 °C (+266 °F) Process temperature Ambient temperature With process fitting PVDF, process temperature max. 100 °C (212 °F). WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 60 ● – – Stainless steel/NBR – – ● – Depending on the instrument version. 2 g with housing version stainless steel double chamber IP 66/IP 68 (0.2 bar), only with absolute pressure. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 61 Adjustment elements Ʋ 4 keys [OK], [->], [+], [ESC] Ʋ Switch Bluetooth On/Off Protection rating Ʋ unassembled IP 20 Ʋ mounted in the housing without lid IP 40 Breather capillaries not with Ex-d version. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 62 Protection acc. to NEMA IEC 60529 Plastic Single chamber IP 66/IP 67 Type 6P Galvanic separation between electronics and metal housing parts Protection rating IP 66/IP 68 (0.2 bar) only in conjunction with absolute pressure. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 63: Calculation Of The Total Deviation

    + (F + (F perf To provide a better overview, the formula symbols are listed together below: • : Total deviation • total : Basic accuracy • perf : Long-term stability stab When used with fulfilled housing protection. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 64: Calculation Of The Total Deviation - Practical Example

    TD 20 : 1 Factor FTD 1.75 10.5 Tab. 22: Determination of the additional factor "turn down" for the above example: F = 1.75 TBasis = 0.15 % x 3 x 1.75 = 0.79 % WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 65 = (0.05 % x 2.5) stab = 0.13 % stab = 0.83 % + 0.13 % = 0.96 % total The example shows that the measurement error in practice can be considerably higher than the basic accuracy. Reasons are temperature influence and Turn down. WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 66: Dimensions

    Fig. 39: Housing versions in protection IP 66/IP 67 and IP 66/IP 68 (0.2 bar) Plastic single chamber (IP 66/IP 67) Aluminium - single chamber Stainless steel single chamber (electropolished) Stainless steel single chamber (precision casting) Stainless steel single chamber (electropolished) IP 69K WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 67 ~ 66 mm (2.60") 110 mm x 90 mm (4.33" x 3.54") Fig. 40: IP 68 version with external housing Lateral cable outlet Axial cable outlet Plastic housing Stainless steel housing, electropolished WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 68 G½ A inside G¼ (ISO 228-1) G½ A inside G¼ A PVDF (ISO 228-1) G½ manometer connection (EN 837) volume-reduced ½ NPT inside ¼ NPT M20 x 1.5 manometer connection (EN 837) WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 69 For the version with temperature range up to 150 °C/302 °F, the measure of length increases by 28 mm (1.1 in). For the version with "Second Line of Defense", the measure of length increases by 17 mm (0.67 in). WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 70 For the version with temperature range up to 150 °C/302 °F, the measure of length increases by 28 mm (1.1 in). For the version with "Second Line of Defense", the measure of length increases by 17 mm (0.67 in). WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 71 For the version with temperature range up to 150 °C/302 °F, the measure of length increases by 28 mm (1.1 in). For the version with "Second Line of Defense", the measure of length increases by 17 mm (0.67 in). WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 72 G1, ISO 228-1 suitable for PASVE PMC 1" front-flush PN 6 DN 48 with tension flange For the version with temperature range up to 150 °C/302 °F, the measure of length increases by 28 mm (1.1 in). WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 73 For the version with temperature range up to 150 °C/302 °F, the measure of length increases by 28 mm (1.1 in). For the version with "Second Line of Defense", the measure of length increases by 17 mm (0.67 in). WIKA Operating Instructions - Process pressure transmitter CPT-2x...

  • Page 74: Trademark

    9 Supplement Trademark All the brands as well as trade and company names used are property of their lawful proprietor/ originator. WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 75 Linearisation 35 Maintenance 44 Measurement setup 17, 18, 19 Parameterization example 32 Peak value indicator 38 Position correction 32 Pressure compensation 17 – Ex d 16 – Standard 16 Process pressure measurement 18 Reset 39 WIKA Operating Instructions - Process pressure transmitter CPT-2x...
  • Page 76 All statements concerning scope of delivery, application, practi- cal use and operating conditions of the sensors and processing systems correspond to the information available at the time of printing. WIKA Alexander Wiegand SE & Co. KG Alexander-Wiegand-Straße 30 63911 Klingenberg Germany...

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