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Presys PCA-570-RM Technical Manual

Advanced pressure calibrator
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PRESYS
Advanced Pressure Calibrator
Instruments
PCA-570
PCA-570-RM
PCA-570-DT
TECHNICAL MANUAL
EM0431-01

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Summary of Contents for Presys PCA-570-RM

  • Page 1 PRESYS Advanced Pressure Calibrator Instruments PCA-570 PCA-570-RM PCA-570-DT TECHNICAL MANUAL EM0431-01...
  • Page 2 PCA-570. • In case of failure, contact Presys Technical Assistance. • Being without daily use, leave it on for one hour before starting the activities.

  • Page 3: Table Of Contents

    Table of contents 1 - INTRODUCTION ..............................1 1.1. General Description............................. 1 1.2. Specifications ..............................2 1.3. Special Software Features ..........................8 1.4. Order Code ................................. 9 2 - OPERATION ................................10 2.1. Party identification ............................. 10 2.2. Battery and charger (only for PCA-570 Portable) ....................14 2.3.
  • Page 4 ® 2.5.5. HART Transmitter mA Output Adjustment ....................53 2.5.6. Full-Hart Configurator (FH Option) ......................54 2.6. Data Logger ..............................59 2.7. Automated Tasks .............................. 61 2.7.1. Creating Tasks............................62 2.7.2. Running tasks ............................. 65 2.7.3. Visualizing results ............................67 2.7.4.

  • Page 5: Introduction

    1 - INTRODUCTION 1.1. General Description The Advanced Pressure Calibrator PCA-570 has levels of performance only comparable to laboratory standards, having accuracy from to 0,025 % of full scale. It allows the measurement of several pressure ranges, as well as the measurement and generation of volt and mA signals. It is designed to offer the necessary resources in order to facilitate the work of keeping the process instruments adjusted and calibrated.

  • Page 6: Specifications

    1.2. Specifications Pressure capsule Can be put until 4 pressure capsules in the PCA-570, with ranges varying of 25 mbar until 700 bar. Ranges * Resolution Accuracy** Observations  0,05 % (0) 25 mbar 0,001 Gauge pressure.  0,05 % (1) 70 mbar 0,0001 Using with air or inert gases.
  • Page 7 Auxiliart Inputs and Outputs Input Ranges Resolution Accuracy Observations  0,02 % FS* Volt -10 V to 11 V 0,0001 V > 1 M input  0,02 % FS 11 V to 45 V 0,0001 V  0,01 % FS <...
  • Page 8 The Probe is a Pt-100 to four wires of high accuracy, provided on request. The calibrator input accepts Callendar-Van Dusen and ITS-90 curves correction coefficients. Pressure Module MPYA Independent module for pressure measurement, provided on request. The MPYA communicates with PCA-570 which performs the pressure indication. Consult the MPYA specifications on Presys website.
  • Page 9 Generals Specifications Four-wire thermoresistance measurement (probe). Table IEC 60751, Callendar-Van Dusen or ITS-90 configurable. Regulated Power supply for transmitters (TPS): 24 Vcc, with protection for short-circuit (30 mA). Contact input for pressure switch calibration. Input/output isolation: 50 Vcc. Warm-up time: 5 minutes. Operating temperature: 0 a 50 C.
  • Page 10 Dimensions: 140 mm x 250 mm x 80 mm (HxWxD). Weight: nominal 1.5 kg. Rack Mounting Version (PCA-570-RM). Ideal for mounting on a bench or 19" rack. Power supply from 100 to 240 Vac, 50 / 60 Hz. Included accessories: technical manual, USB cable (A/B), network cable and leads test.
  • Page 11 Dimensions: 132 mm x 308 mm x 275 mm (HxWxD). Weight: 3,0 kg nominal. Notes: * PCA-570 and ISOPLAN are trademarks of Presys. * Changes can be made to the instrument by changing the specifications described in this technical manual. ®...

  • Page 12: Special Software Features

    1.3. Special Software Features - Special functions: 1) SCALE: scale both input and output. 2) CONV: converts any input to any output, galvanically isolated. 3) RAMP: increasing or decreasing ramps with configurable run times and plateau. 4) STEP: steps or setpoints with configurable times. - Memory manager: Storage of user-defined configuration types.

  • Page 13: Order Code

    1.4. Order Code...

  • Page 14: Operation

    2 - OPERATION 2.1. Party identification PCA-570 Portable Front Panel Fig. 01 - Front Panel – PCA-570...
  • Page 15 Left side panel Right side panel Fig. 02 - Side panels – PCA-570 Accessories: The carrying bag has three compartments, one to hold the calibrator and the others to hold various accessories including test leads, spare fuse, handles for carrying and field use, and a technical manual. Optional: are optional the pressure capsules, high accuracy temperature sensor (PROBE), the pressure module (MPYA) beyond ISOPLAN software.
  • Page 16 PCA-570-RM (Rack Mounting Version) Fig. 04 - Front and Back Panels – PCA-570-RM...
  • Page 17 PCA-570-DT (Desktop Version) Fig. 05 - Front and Back Panels – PCA-570-DT...

  • Page 18: Battery And Charger (Only For Pca-570 Portable)

    2.2. Battery and charger (only for PCA-570 Portable) The PCA-570 is providing with battery rechargeable allowing up to 10 hours of continuous use. This autonomy is reduced according to the active functions. A charger is include that can be connected to a voltage of 100 to 240 Vac.
  • Page 19 Fig. 07 - Battery Levels Clicking on the battery icon brings up the next screen. This screen shows the battery charge (in percent), the current (positive value if the battery is being charged and negative otherwise), and the estimated runtime of the instrument based on battery consumption.

  • Page 20: Using The Pca-570: Basics Functions

    DATA LOGGER – records measurements over time, making it possible to view them in graph or table, see section 2.6. HELP DESK – has videos made by PRESYS to assist in the use of the calibrator and can also store videos and documents made by the user, see section 2.9.

  • Page 21: Calibrator

    2.4. Calibrator To select input or output functions, from the main screen, press the button CALIBRATOR. The following screen appears. Fig. 09 - Calibrator Function Channel 1 is shown in the upper part, and channel 2 in the lower part. This screen can be changed in the option Layout from the Fast Browser menu.
  • Page 22 information about Input and Output settings and the IP address. Press Back to return to calibrator mode or HOME for the Main Screen. Fig. 10 - Fast Browser and Secondary Menu The channel 1 can only be configurable as input. The channel 2 can be configurable as output (default setting) or input.

  • Page 23: Measurement Or Input Functions

    2.4.1. Measurement or input functions a) Input type setting Press the button INPUT CA-1, select through the menu the type of measure signal and use the electrical bornes correspondents (see figure 16 – Input Connections or press the button HELP). Fig.
  • Page 24 identification describe in ID. Select SETTINGS for insert one identification or TAG for sensor in ID and inform the range of using in MIN and MAX. Select PARAMETERS for insert the sensor curve, usually stated on the calibration certificate of the same. For Callendar-Van Dusen: Fill the value of R0 (Resistance at 0 °C) and the parameters A, B and C along with its exponents.
  • Page 25 Fig. 13 - Configurable the ITS-90 coefficients. Negative Range: Access the coefficients to be used for temperatures below or equal to the triple point temperature of water (0,01 °C). Recommended Temperature Range (Negative) Coefficients Range 4 -189,3442 °C to 0,01 °C A4 , B4 Range 5 -38,8344 °C to 0,01 °C...
  • Page 26 Positive Range: Access the coefficients to be used for temperatures above to the triple point temperature of water (0,01 ° C). Recommended Temperature Range (Positive) Coefficients Range 6 0,01 °C to 961,78 °C A6 , B6 , C6 , D6 Range 7 0,01 °C to 660,323 °C A7 , B7 , C7...
  • Page 27 The SWITCH input (CONTACT) count for measure the continuity of an external contact connected at the input SWITCH on PCA-570. When there is continuity, the input show CLOSE, the opposite show OPEN. By selecting previously the indication of pressure in the channel-2, in SWITCH is enable the function of automated PRESSURE SWITCH test.
  • Page 28 Whenever the input signal is below or above of the input ranges established on item 1.2 de Specifications the display indicate UNDER or OVER, respectively. The temperature and pressure units can be changed clicking on the unit (°C, °F, psi, atm etc.) and selecting the option desired in the list.
  • Page 29 b) Input Connections or Measure Fig. 16 - Input Connections...
  • Page 30 OBS.: For RM and DT versions, verify the position of the capsules in the figures 04 and 05, respectively. Fig. 16 - (Cont.) Input Connections...
  • Page 31 c) PROBE Connections (optional). Connect the PROBE to the PCA-570 so that the polarity identifications coincide. See figure below. Fig. 17 - Probe Connections...

  • Page 32: Generation Or Output Functions

    2.4.2. Generation or output functions a) Output type configuration Press the button OUTPUT, select through of menu the type of signal to be generated and use the electrical bornes correspondents (see figure 20 – Output Connections or press the button HELP). Fig.
  • Page 33 Fig. 19 - Changing the output value The option NONE disable the output function.
  • Page 34 b) Generation or Output Connections Fig. 20 - Output Connections...

  • Page 35: Available Power Supplies

    2.4.3. Available Power Supplies The PCA-570 has two galvanically isolated voltage sources: TPS and +22,5 Vcc of output, both with protection against short-circuit (limited current to 30 mA). Fig. 21 - Power Supply...

  • Page 36: Special Input Functions

    2.4.4. Special Input Functions Selecting SPECIAL FUNCTIONS in the input channel, appears into display: Fig. 22 - Special input functions The selected function will be effect about the input previously selected. After select and configurable the special function, for activate it change the key for and confirm in OK.
  • Page 37 a) SCALE Function Establish a linear relation between input signal on PCA-570 and what is shown in to display, according to the graphic below. Fig. 23 - SCALE Function (LINEAR) The indication in to display staggered (#) can be changed to represent any unit, such as: m/s, m3/s, %, etc. The number of decimal digits shown in to display is configurable it 0 to 4.
  • Page 38 In case of current input, can be establish a linear relation as per illustrated previously or quadratic (option QUAD), as shown below. Fig. 24 - SCALE Function (QUADRATIC)
  • Page 39 b) CONV Function Through the function CONV, PCA-570 can be convert any input signal to any output signal, with galvanic isolation. It can, therefore behave like a real transmitter. Once selected the input and the output of PCA-570, should fill the four parameters, showed in the following graph.

  • Page 40: Special Output Functions

    2.4.5. Special Output Functions Select the SPECIAL FUNCTIONS in the output channel appears in to display: Fig. 26 - Special output functions The selected function will be effect about the input previously selected. After select and configurable the special function, for activate it change the key for and confirm in OK.
  • Page 41 a) RAMP function With this programming the output in the PCA-570 varies automatically, producing ramps and levels can be programmed for actuate a once or continuously. Must enter beginning and end values of the range within which the output will excursion (MIN and MAX), and also the value of TIME (in seconds) desired for one complete excursion of range.
  • Page 42 c) SCALE Function The output scaling on PCA-570 allows it to simulate the operation of a transmitter. In this case, the indication of display scaling (#) simulate the input of transmitter (which can be changed by pressing on the number indicated in the display and entering the desired value), and as an output signal we can have any of the signals generated by the PCA-570 (for example, 4 to 20 mA).
  • Page 43 The number of decimal places shown in the display is configurable from 0 to 4. The upper value of the output must necessarily be greater than the lower value of the output. On the other hand, the upper and lower values of the scale can have any relation to each other, as long as they are not equal. Thus, direct or inverse relationships can be established.

  • Page 44: Save Actual Configuration (Memory Manager)

    2.4.6. Save Actual Configuration (Memory Manager) The PCA-570 calibrator supports several special functions that may become frequently used. In these situations it is useful to store such settings in the instrument in order to save time. After setting the calibrator the way you want (input type, output type, special functions), press the icon >...

  • Page 45: Bar Graph

    2.4.8. Bar Graph The PCA-570 calibrator allows monitoring a input and include alarms of HIGH and LOW for range. To configure the alarm, press the icon > MORE OPTIONS, and the button BARGRAPH. Select between the alarms of HIGH and/or LOW. Press EMIT SOUND so that the calibrator emits a beep in alarm. In EVENTS is possible verify a time list whereby the alarm detect values outside the registered tolerance.
  • Page 46 Fig. 29 - Pressure Transmitter Calibration...
  • Page 47 The current input readings can be scaled to pressure using the SCALE option (see 2.4.4.a). In this way the error between the input and output of the pressure transmitter is easily calculated. b) Pressure Switch Check Pressure switches are instruments with a pressure input and a relay alarm. The relay is activated whenever the input pressure goes above or below a certain alarm setpoint.

  • Page 48: Hart

    Channel 2 must be enabled and PRESSURE selected. The corresponding capsule must be selected. On channel 1, select SWITCH input, enable the PRESSURE option. The PCA-570 then displays the pressure measurement and the state of the contact (open or closed). Press the RUN button to start the test after filling in all the required fields.

  • Page 49: Hart Connections

    ® 2.5.1. HART connections ® When you select HART from the main menu, you will see mA INPUT + HART and HART ONLY (INCLUDING NETWORK) on the screen. The internal resistor (250 Ω) can also be enabled or not. The option must be chosen according to the type of connection that will be made.
  • Page 50 Fig. 32 - Transmitter powered by external source ® mA + HART input (internal resistor enabled) ® For the connections shown in figures 31 and 32, use the option mA INPUT + HART and INTERNAL RESISTOR enabled. In this mode, the 250 Ω HART ®...
  • Page 51 b) HART ONLY (Calibrator in parallel with transmitter) ® Fig. 33 - HART only IMPORTANT: Before connecting the calibrator to the transmitter(s) as shown above, make sure that the mA input is not configured on the PCA-570 (Enter the Calibrator menu and select any non-mA input or select none) ®...

  • Page 52: Starting Communication

    2.5.2. Starting Communication ® ® Entering the HART menu, the following screen is shown. Enabling the option HART CONFIGURATOR (only for FH version) the calibrator will allow access to the Full Hart software (DD library) with all the device ® parameters.

  • Page 53: Hart® Transmitter Measurement Range Adjustment (Ch Option)

    For the CH option, you must enter the ADDRESS of the instrument you wish to communicate with and press the CONNECT button. If the address of the instrument is not known, you can press the search button , which will search for instruments in the address range 0 to 15.

  • Page 54: Adjusting The Measuring Range Of The Hart Transmitter With Reference (Option Ch)

    ® Fig. 35 - HART transmitter measurement range adjustment ® 2.5.4. Adjusting the Measuring Range of the HART Transmitter with Reference (Option CH) The working range of the transmitter can also be adjusted by generating the minimum and maximum values of the desired range at the transmitter input and setting these values to minimum and maximum (reference setting).
  • Page 55 For example, for a pressure transmitter, channel-2 must be set as Pressure Input and the pressure must be manually generated (with a pump, for example) and connected to the PCA-570. To enable channel 2 as input, press the icon and enable the CA-2 option. To return to the Calibrator screen press the BACK button. The channel-2 measurement or generation signal will act as the default value for the instrument's range setting.
  • Page 56 For this configuration, select the MONITORING tab. This screen shows the value of the primary variable ® (PV) read by HART (digital), the current that the transmitter wants to generate (AO - DIGITAL OUTPUT), and the current measured by the PCA-570 (ANALOGIC READ). To adjust the transmitter range, generate the signal at the transmitter input corresponding to the lower range value and press the ↓Range Inf button.

  • Page 57: Hart Transmitter Ma Output Adjustment

    In the MONITORING screen, in addition to the indication of the primary PV variable and the transmitter current, the value measured or generated by the PCA-570 at the CA-2 is shown. If the CA-2 is configured as an output, press on the number to change the output value. ®...

  • Page 58: Full-Hart Configurator (Fh Option)

    Fig. 38 - Checking / Adjusting the mA output of the HART® transmitter 2.5.6. Full-Hart Configurator (FH Option) If the HART® CONFIGURATOR option is enabled, the FH software starts. For this option, the instrument is automatically found and the screen indicates the basic, universal and specific parameters (DD library). To start the HART configurator you must wait for the PCA-570 to read all parameters from the instrument.
  • Page 59 Fig. 39 - Device Parameters Double-click the parameter you want to change and change the value. Parameters identified by the icon have methods. To change them, double-click the parameter and follow the steps. For other parameters, after editing, the field value turns yellow, indicating that a change has been made but not yet saved in the transmitter.
  • Page 60 To view the mA Input value or change the output setpoint, press the button Fig. 40 - PCA-570 Input and Output Values...
  • Page 61 To view the device status, enter the menu VIEW and then in DEVICE CONDITION: Fig. 41 - Device Status ® To save the entire configuration of a Hart instrument connected to the PCA-570, you can use the Document Device, from the menu DEVICE. This function is useful for saving the configuration of an instrument for later downloading to another instrument of the same model, or for backing up the settings.
  • Page 62 Fig. 42 - Saving a Device Configuration When you want to load the saved configuration into an instrument, access the menu DEVICE > DOWNLOAD/VIEW. To select the configuration file, double-click on it. Press the button WRITE to realize the download of the configuration file for the connected instrument. Before the instrument is fully configured, some confirmation messages will be displayed.

  • Page 63: Data Logger

    2.6. Data Logger The PCA-570 allows you to record a series of measurements over time for viewing the data in graph or table format. Select CALIBRATOR from the main menu and edit the desired signal type on channel 1 and channel 2. Press the icon and the option DATA LOGGER.
  • Page 64 Fig. 44 - Data Logger Configuration Menu Entering the Configuration menu, in the CONFIG option, you can edit the graph's background color, line color and thickness, sampling rate (in seconds) and configure the graph's x (time) and y (measurements) axes. The collection of values can also be programmed to start at a certain date and time in the LOGGER option.

  • Page 65: Automated Tasks

    2.7. Automated Tasks In the PCA-570, automatic calibration jobs can be generated and run. This option can be used to generate calibration work orders for various instrument types. The tasks issue documents with the results and can be issued Calibration Reports. Configure in the menu TASKS > ADVANCED TASK OPTIONS the desired option. Fig.

  • Page 66: Creating Tasks

    Report Generator Mode In the option to issue calibration reports, a more simplified document will be issued, with the calibration data, both AS LEFT (final) and AS FOUND (preliminary), if any. It states whether the calibrated instrument is PASS/ FAIL according to the registered acceptance criteria.
  • Page 67 Fig. 46 - Task Information When finalizing the task information, select the Preliminary/Final bar. Add each calibration point (point, channel 2 of the calibrator) and its corresponding expected value (expected, channel 1 - calibrator input), both in the As found calibration (calibration done before adjustment) and As left (calibration done after adjustment). The points can also be generated with the help of the AUTO button.
  • Page 68 Fig. 47 - Task Points and Strategy Select the Review and Save bar. Choose a name/identification number for your task. If you want to save the template of this task, for later use in creating other tasks, press SAVE MODEL and give it a name. When you want to open this template again, in the task creation screen, press OPEN MODEL.

  • Page 69: Running Tasks

    Fig. 48 - Identifying the Task 2.7.2. Running tasks To execute a created task, from the main menu choose TASKS > EXPLORE TASKS. A list appears with the identification of the work orders created and not yet executed in WAITING. Select the desired task and press OK. Make the necessary connections between the calibrator and the instrument to be calibrated and press START.
  • Page 70 Fig. 49 - Identifying the Task The PCA-570 starts to perform the calibration automatically, generating the setpoints registered in the task and taking the reading from the instrument to be calibrated. If NONE is selected for the calibrator input or output, the calibrator prompts you to enter the data manually.

  • Page 71: Visualizing Results

    2.7.3. Visualizing results After a task has been performed, it remains saved in the calibrator. To view the results of a calibration in the PCA-570, from the main menu select TASKS > EXPLORE TASKS. Select the RUN option. The list will now show only those tasks that have been performed. Select the desired work order and press OK.
  • Page 72 The CREATE DOCUMENT option saves the task data as a PDF file in the internal memory of the calibrator (SD card), which can be printed or accessed via computer. To print the Calibration Report or Certificate, press the printer icon .

  • Page 73: Advanced Task Options

    2.7.4. Advanced Task Options As said before, in the ADVANCED TASK OPTIONS option you can choose between issuing reports or calibration certificates with uncertainty. For the calibration certificates with uncertainty there are also customization and registration options. Entering the ADVANCED option you can configure/register the following options: •...

  • Page 74: Help Desk

    2.8. Help Desk The calibrator allows the viewing of videos and documents. Videos can be viewed while a calibration is being performed, and are intended to assist in the use of the calibrator. Documents can be, for example, calibration procedures or instructions that can be stored and viewed on the calibrator itself. From the main menu, when you select HELP DESK and the VIDEOS tab, a list of video categories will appear.

  • Page 75: Settings

    3 - SETTINGS The SETTINGS menu has 4 divisions (tabs at the bottom): DATE AND TIME, NETWORK, SERVICES and SYSTEM described below: 3.1. Date and Time In the date and time bar you can set the date, time and time zone for the calibrator. It is also possible to set the decimal separator for CSV files between comma and period.

  • Page 76: Services

    Fig. 51 - IP address 3.3. Services In the SERVICES bar the user can configure the calibrator's communication types, among other settings. The options are: • REMOTE ACCESS - Access options via WEBSERVER (Remote Server) and via VNC (Virtual Network Computing)

  • Page 77: Remote Access - Web Server

    • SERIAL COMMUNICATION - Serial communication settings • FILE SHARING - Options to allow/deny access to file sharing and configuration of access passwords • SERVER ADDRESS - Setting the Remote Server Address • START MODE - The user selects whether he or she prefers the calibrator to start in calibrator mode or on the main screen.
  • Page 78 Fig. 52 - Web Server On the Web Server, you can monitor the calibrator screen, change the output type and value, and read the signals from the inputs.

  • Page 79: Remote Access - Vnc

    SETTINGS > NETWORK > SERIAL COMMUNICATION menu, enable serial communication (RUN switch to Communication Parameters: Parity: none Data bits: 8 Baud rate and Stop Bits: configurable in the SERIAL COMMUNICATION menu Below are some examples of SCPI commands for the PCA-570 calibrator. For a complete list please consult Presys.
  • Page 80 *IDN? Description: Instrument identification. Parameters: --- Answer: Manufacturer, ID, Serial Number, Software Version *CLS Description: Clears the error list. Parameters: --- Answer: --- MEASure:PRESsure? Description: Pressure reading. Parameters: --- Answer: Pressure reading | Unit UNIT[:PRESsure]? Description: Current pressure unit. Parameters: --- Answer: Current pressure unit...
  • Page 81 UNIT[:PRESsure] <unit> Description: Sets the pressure unit. Parameters: Answer: --- SYSTem:ERRor[:NEXT]? Description: Checks the error list. Parameters: --- Answer: Last Error MEASure[:SCALar]:CURRent[:DC]? Description: mA Input Reading Parameters: --- Answer: mA reading MEASure[:SCALar]:VOLTage[:DC]? Description: V Input Reading Parameters: --- Answer: V reading...

  • Page 82: System

    3.4. System In the SYSTEM tab you can configure the calibrator volume, touch screen setting, calibrator identification, language, printer, and security options. • Touch Screen Options To adjust the screen, press TOUCH SCREEN OPTIONS. Press the center of the + signs on the screen (use of the touch screen stylus is recommended).
  • Page 83 Note the functions that each user level has access to in the table below: Function User Level Calibrator Tasks Hart Data-Logger Settings ®      Operator           Admin To limit access to the system, press the key icon and then the padlock icon in the menu...

  • Page 84: Adjust

    4 - ADJUST Warning: Only enter the following options after you fully understand them. Otherwise, it may be necessary to return the instrument to the factory for recalibration! Select the CAL ADJUST option under SETUP > SYSTEM. Use the password 9875 to access the following menu.

  • Page 85: Input Adjustment

    4.1. Input Adjustment 1) Input V, mA Select the corresponding mnemonic and press the START button. Apply the signals corresponding to the table below. Note that the values applied should only be close to the values in the table. After applying the signal, record the values at the 1st and 2nd calibration points (PNT1 and PNT2). Input V PNT1 PNT2...
  • Page 86 2) Probe Adjustment First, identify the connector pins for the Probe according to the figure below. Fig. 54 - Probe Input Connection...
  • Page 87 The adjustment of PROBE is realized in two steps: a) mV signal application: Signal mV Terminals Bornes PNT1 PNT2 RTD2(+)* GND OUT (-) 70,000mV 120,000 mV RTD2(+)* GND OUT (-) 120,000mV 600,00 mV (*) RTD2, for the adjustment of the PROBE, has as reference the terminals of Figure 55. If necessary, it is possible to acquire a probe connector adapter with output for terminals type J121 (female).

  • Page 88: Pressure Calibration

    4.3. Pressure Calibration By pressing PRESSURE ADJUST on the GENERAL bar, there are 3 options: mV ADJUST, PRESSURE ADJUST, and PARAMETER SETTING. Enter the PRESSURE ADJUST option. The sensor adjustment consists of applying at least two pressure values: one near the minimum range value and one at the range full scale.

  • Page 89: Maintenance

    5 - MAINTENANCE 5.1. Battery Replacement (only for PCA-570 portable) To change the battery in the PCA-570, proceed as follows: - Loosen the battery cover screws - figure 57 (A); - Disconnect and pull out the battery - figure 57 (B) and (C); - Insert the new battery and connect it - figure 57 (D);...
  • Page 90 Fig. 56 - Battery Replacement...

  • Page 91: Power Input Fuse Replacement

    5.2. Power input fuse replacement To replace the PCA-570 power fuse, proceed as follows: - Turn the fuse holder counterclockwise (figure 58 A). Try to use a plastic tool to avoid damaging the fuse holder; - The fuse holder will be loose - figure 58 (B); - Pull the fuse holder and remove the fuse - figure 58 (C);...
  • Page 92 Fig. 57 - Power input fuse replacement...

  • Page 93: Pressure Units Conversion

    6 - PRESSURE UNITS CONVERSION mbar 6,894757 6,894757 6,894757 6,894757 x 10 x 10 x 10 6,894757 6,804605 7,030696 7,030696 x 10 x 10 x 10 x 10 O@4°C O@4°C 7,030889 7,030696 7,030889 2,306659 x 10 x 10 x 10 O@4°C O@4°C O@60°F...
  • Page 94 cmHg@0°C inHg inHg@0°C inHg@60°F 5,171507 2,036024 2,036026 2,041772 gf/cm kgf/cm kgf/m 7,030696 7,030696 7,030696 x 10 x 10 x 10 Reference: Guide for the Use of the International System of Units (SI) – NIST Special publication 811 – 2008 Edition.
  • Page 95 Observations • The readjustment of the PCA-570 must be performed at the reference temperature and humidity conditions. • For the best calibration condition, comply with the minimum warm-up time of two hours and unplug the battery charger from the PCA-570 for at least one hour before use. •...

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Pca-570-dt

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