Home > Altek > Calibrator > Altek Model 222A SingleType Thermocouple Calibrator Manual

Altek Model 222A SingleType Thermocouple Calibrator Manual

    Download as PDF Print this page Share this page

    Have a look at the manual Altek Model 222A SingleType Thermocouple Calibrator Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 45 Altek manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.

    							Thermocouple Calibrator
    Model 222A
    • Select one of 10 T/C types plus mVJ, K, T, E, R, S, B, N, C, L & mV
    • Temperature input & outputReads directly in degrees
    • Quik-Chek™ switchInstantly recall three outputs; HI, LO & Set
    • Multi-speed digital potFast, accurate setting
    • Accuracy ±(0.008% of reading+0.006 mV)Typical accuracy of 0.4°C or 0.7°F 
    Field selectable 0.1° or 1µV resolutionCalibrate thermocouple instruments
    Source and read T/C’s over the entire industrial tem-
    perature range with Altek’s Model 222A Thermocouple
    Calibrator. Use with transmitters, recorders, control-
    lers, alarms, indicators, data acquisition and computer
    systems.
    Built-in flexible T/C leads let you connect directly
    using the proper T/C materials. Automatic, linearized
    cold junction compensation virtually eliminates
    temperature drift.
    Field customize the Model 222A to lock-in 0.1° or 1°
    resolution, fixed °F or °C or front panel selectable
    °F/°C operation. Built in protection guards the Model
    222A against mis-connection to 120 Volts AC or DC,
    in any mode. 
    Calibrate thermocouple inputs
    Select resolution of 0.1° or 1° for the full listed range
    of all thermocouple types.  Millivolts allows 10
    microvolt resolution from -999.90 to 999.90 mV. The
    Model 222A simulates key temperatures for repetitive
    calibrations. “Quik-Chek” function stores three output
    temperatures for real convenience.  Three memories
    are retained for each thermocouple type even when
    the power is off.
    Turn the knob to check trip points, controller action or
    hysteresis.  The fast response 222A sets quickly
    without overshoot but allows slow changes at your
    own rate.  
    Measure thermocouple sensors
    The Model 222A display gives you fast, accurate
    temperature measurement with 0.1 and 1 degree or
    with 0.01 millivolt resolution. High resistance or open
    T/Cs and leads are detected and indicated on the
    LCD display. Two readings per second track fast
    moving temperatures.
    “MAX” and “MIN” memories are continuously updated
    from turn-on or whenever the “RESET” pushbutton is
    pressed. The Model 222A gives you a handy tool to
    monitor temperatures for drift or control deviation. Just
    flip the “Quik-Chek” switch to display the minimum
    and maximum temperature since reset.
    Turn-on sequence
    Each time the Model 222A is turned on, the LCD will
    display all segments for 1 second. If °C/°F operation
    has been selected the currently selected temperature
    scale of °C or °F will display.
    General description 
    						
    							General instructions
    Setting operating mode 
    Turn-onEach time the Model 222A is turned on, the LCD will
    display all segments for about 1 second. It then dis-
    plays the currently selected thermocouple type for
    approximately 3 seconds. The currently selected
    temperature scale of °C or °F will then display for
    about 3 seconds.
    1) Move the power switch to SOURCE or READ
    2) All segments on the LCD are turned on during
    self test
    3) The display will indicate the selected 
    temperature scale for 3 seconds. Press the
    SCROLL pushbutton to switch between °C & °F
    (based on configuration). 
    If fixed °C or fixed °F have been selected, the user
    prompts for this selections will be skipped.
    The three “QUIK-CHEK” temperature values will be
    the same as previously stored. Each time a different
    T/C type is selected, the three “QUIK-CHEK” values
    for that type will be recalled. 
    Changing the batteryLow battery is indicated by BAT on the LCD display.
    Approximately 10 hours of operation remain before
    the LCD goes blank and the Model 222A shuts itself
    down.  Turn the 222A off, remove the four corner
    screws and lift the unit out of the case. The battery
    is fastened to the bottom printed circuit board and  is
    easily removed. Replace screws and turn on when
    ready to use.
    Initial setupThe Model 222A is internally configurable for ease of
    use. Simply remove the four corner screws, flip a
    few DIP switches and follow the simple instructions
    given below (a condensed guide is found within the
    calibrator housing). The choices are based on the
    type of instruments in your shop or plant.  For
    instance if your plant has only instruments that
    display to 1°C, choose full time °C and display with
    1° resolution.
    Configuring temperature scalesThe Model 222A may be internally set-up for full time
    use of °C, full time use of °F or selectable °C/°F op-
    eration. The selectable mode lets you choose °C or
    °F each time the unit is turned on (see Setting
    Operating Mode below).
    Locking in 1º resolutionThe Model 222A may be internally configured for
    0.1° or 1° resolution. Select 1° resolution for less
    critical applications or 0.1° for increased resolution
    when necessary.
    Over range/under rangeOut-of-range temperatures are indicated by OVER
    and UNDER on the display. If out-of-range is
    displayed during READ mode check for proper con-
    nections and T/C type.
    °F
    °C
    100°
    100.0°
    OVER
    -
    8.8.8.8.8MAX
    HI
    LO
    MINBAT    OVER
    UNDER       READ
    SOURCE°F
    °C
    m
    9 Volt
    Setting DIP Switches1) Turn the Model 222A OFF.
    2) Remove the 4 corner screws and lift faceplate assembly out of
    the case.
    3) Set the DIP switches for your options as diagrammed.
    4
    Fixed 1°(Switch
    Up)
    Fixed °F
    1
    4
    Fixed 0.1°*
    Fixed °C
    2
    4
    3
    (UNUSED)
    °C/°F Switchable*
    *Factory Settings (All switches down)1
    3
    3 (Switch
    Down)
    °F
    °C
    Some thermocouple input pyrometers and controllers operate on the
    D’Arsonval meter movement principle. Millivolts from the 
    thermocouple input drive a low resistance coil directly. For example,
    a coil may have a typical resistance of 60 ohms. Since the pyrome-
    ter resistance is so low, resistance of the input thermocouple leads
    must be taken into account. Pyrometers of this type have fixed or
    adjustable series resistance which corrects for lead length 
    resistance.
    To use the Model 222A to drive low resistance loads:
    1)  Disconnect the sensing thermocouple leads at the thermocouple
    head.
    2) Connect leads from the Model 222A to the extension wires going
    to the pyrometer, using the screw connectors in the head. (If the
    sensing thermocouple sheath is within 1/4 to 2 times the length of
    the Model 222A lead length, the error due to resistance will be
    negligible).
    3) Set the temperatures to be used for calibration per the
    recommendation of the pyrometer manufacturer.If the thermocouple head cannot be accessed:
    1) Determine the installed length of extension wire between the
    head and the pyrometer. 
    2) Select thermocouple extension wire of the same type, wire size
    and length as the installed wire between the head and the
    pyrometer to make up a calibrating wire. 
    3) Replace the active thermocouple extension wire with the
    calibrating wire at the pyrometer terminals. 
    4) Connect the other ends of the calibrating wire to the Model
    222A and calibrate the pyrometer. 
    Note: A resistor of the same ohm value as the wire between the
    head and the pyrometer may be used in series with one lead
    instead of a length of calibrating wire. Make certain that both input
    and output leads to the resistor are the same temperature.
    SOURCE
    READ
    HI
    SET
    LOMAX
    READ
    MIN
    STORE
    RESET
    SCROLL
    OFF
    1000
    THERMOCOUPLE
    CALIBRATOR
    ALTEKMODEL 222AT
    Y
    P
    E
    SOURCE
    READ
    HI
    SET
    LOMAX
    READ
    MIN
    STORE
    RESET
    SCROLL
    OFF
    625
    THERMOCOUPLE
    CALIBRATOR
    ALTEKMODEL 222AT
    Y
    P
    E600  650
    Pyrometer calibration 
    						
    							Simulate a thermocouple
    Source1) Set up the Model 222A for the correct
    temperature scale (°C or °F). 
    2) Disconnect the input wires from the device to be
    calibrated or checked.
    3) Connect the Model 222A to the device to be
    calibrated, being careful to observe proper
    polarity and T/C type
    4) Adjust the digital pot to the desired output value. 
    OutputWhenever SOURCE mode is selected the word
    SOURCE will appear on the LCD.  To change the
    output value, turn the speed sensitive digital pot.
    Turning the pot slowly will cause a gradual change
    in the output. A faster change will occur when the
    pot is turned faster. A filter circuit limits response
    when the pot is turned too fast. This function
    operates in all three output positions (HI, SET &
    LO). 
    OFFSOURCE
    OUTPUT
    Store1) Switch to HI (or LO).
    2) Turn the digital pot to desired value.
    3) Press STORE. The LCD will flash once indicating
    that the value has been stored
    If a value is in the SET position and you want that
    value in HI or LO, press and hold the STORE button
    while moving the switch to HI or LO. The LCD will
    flash once indicating that the value has been stored.
    Release the STORE button. 
    Instantly recall temperaturesAny time you need a stored value just throw the
    Quik-Chek switch. Any value in the T/C range may
    be stored in HI & LO. The Model 222A remembers
    the HI, LO and SET values for you with the power
    on or off.
    OverloadThe Model 222A will indicate OVER and blank the
    digits on the display when the output leads have
    been shorted or when the device being calibrated
    requires more than 10 mA.
    Read a thermocouple sensor
    Read1)  Set up the Model 222A for the correct T/C type
    and temperature scale (°C or °F)
    2)  Disconnect the wires from the thermocouple to
    be read or checked.
    3)  Connect the Model 222A to the sensor, being
    careful to observe proper polarity & T/C type
    4)  Display present reading, Maximum or Minimum
    temperatures
    Whenever READ mode is selected the word READ
    will appear on the LCD.  The Model 222A can
    measure temperatures for all T/C types with resolu-
    tions of 0.1° and 1°. The display is updated twice
    per second to continuously track fast moving tem-
    peratures.
    OFFREAD
    INPUT
    STORE           RESET
    SOURCE
    READ
    HI
    SET
    LOMAX
    READ
    MIN
    STORE
    RESET
    SCROLL
    OFF
    SOURCE
    READ
    HI
    SET
    LOMAX
    READ
    MIN
    STORE
    RESET
    SCROLL
    OFF
    HI
    SET
    LOMAX
    READ
    MIN
    SOURCEREAD
    HI
    SET
    LOMAX
    READ
    MIN
    STORE
    RESET
    SCROLL
    OFF
    SOURCEREAD
    HI
    SET
    LOMAX
    READ
    MIN
    STORE
    RESET
    SCROLL
    OFF
    MIN/MAXTo read the Maximum or Minimum temperature
    since INPUT mode was entered, simply switch to
    MAX or MIN. The value will appear on the LCD
    along with the word MAX or MIN. The MAX/MIN val-
    ues are automatically updated and may be viewed
    at any time without disturbing the other values.
    Pressing the RESET/SCROLL pushbutton will trans-
    fer the present temperature into both MAX and MIN
    and will update them as the measured temperature
    changes.
    Open thermocouplesThe Model 222A checks for open or high resistance
    thermocouples. Open or burned out T/Cs are indi-
    cated by “—  —  —  — ” on the display. Tempera-
    tures out of range for the T/C TYPE selected will be
    indicated by OVER and UNDER on the display.
    250
    RECEIVER
    CONTROLLER
    TRANSMITTER
    RECORDER
    SOURCE
    READ
    HI
    SET
    LOMAX
    READ
    MIN
    STORE
    RESET
    SCROLL
    OFF
    250.0
    THERMOCOUPLE
    CALIBRATOR
    ALTEKMODEL 222AT
    Y
    P
    E
    SOURCE
    READ
    HI
    SET
    LOMAX
    READ
    MIN
    STORE
    RESET
    SCROLL
    OFF
    25.0
    THERMOCOUPLE
    CALIBRATOR
    ALTEKMODEL 222AT
    Y
    P
    E
    222A-mV (Millivolt Model)
    222A-mV (Millivolt Model)
    Source and Read millivolts to calibrate and checkout recorders, mV
    transmitters and other millivolt input instruments with the Model
    222A-mV. Resolution is 10 microvolts from -999.90 to +999.90mV. 
    						
    							PN 1886564 Rev A April 2002
    ©2002 Altek Industries, Inc. Specifications subject to change without notice. 
    All rights reserved. Printed in U.S.A.  
    Altek products are warranted to be free from defects
    in material and workmanship (excluding fuses,
    batteries and leads) for a period of three years from
    the date of shipment. Warranty repairs can be
    obtained by returning the equipment prepaid to our
    factory. Products will be replaced, repaired, or
    adjusted at our option. Altek gives no other
    warranties, including any implied warranty of fitness
    for a particular purpose.Also, Altek shall not be liable
    for any special, indirect, incidental or consequential
    damages or losses arising from the sale or use of its
    products.
    Warranty
    (Unless otherwise indicated, specifications are in % Span@ 23° C)
    GeneralAccuracy: ±(0.016% of reading + 0.006 mV)
    Cold junction compensation: Built-in for specified thermocouple
    type, characterized to T/C curve
    Cold junction temperature effect: Within 0.05° per °C change in
    ambient temperature over operating range
    Operating temperature range: -5 to +140°F (-20 to +60°C)
    Storage temperature range:  -22 to + 175°F (-30 to +80°C)
    Relative humidity:  10 to 90%, non-condensing
    Zero stability: Included in cold junction effect
    Warm up time: 1 minute to full rated accuracy
    Overload protection: 120 volts AC/DC for 30 seconds on connect-
    ing leads, in any mode
    Battery life:  9 Volt Alkaline: Nominal 40 hours
    Low battery:  “BAT” indication on LCD at 7 Volts nominal, approxi-
    mately 10 hours left. Batteries should be removed when storing the
    unit >3 months.
    Specifications
    Reference drift: 
    						
    All Altek manuals Comments (0)

    Related Manuals for Altek Model 222A SingleType Thermocouple Calibrator Manual