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PIE calibrators are the evolutionary update to the classic ALTEK line of the 1900's. They are less expensive, thinner, and lighter with sturdy switches and rubber boots. Outstanding features include back-lit displays, automatic stepping & ramping, and "AA" batteries instead of 9V batteries. Additionally, there are more thermocouple and RTD types with better accuracies and ease of use. PIECAL uses the same model numbers to allow for simplicity in replacement.

Terms & Conditions:Offer valid until 9/15/2017. Order must be placed via easthillsinstruments.com. Loopy 5000 is a $200 value. If the PIE Calibrator is returned but the LOOPY 5000 is wished to be kept, a $200 fee will be applied to the refunded total. Refunds are only accepted within 30 days.



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  1. PIE 235 Process Voltage Calibrator

    Also reads pH. Includes leads, hands free carrying case and FREE NIST Traceable Certificate of Calibration.

    Download Data Sheet
  2. PIE 311+ Diagnostic RTD and mA Calibrator

    The PIE 311Plus has all the functionality of the PIE 311 RTD Calibrator (plus additional RTD types) with a built-in Milliamp Calibrator. It can power up a temperature transmitter while simulating the sensor input. Plus it has PIE’s patented Leak Detection to troubleshoot loop wiring problems. The PIE 311Plus haves a LOT more functionality than any competitive models!

    Download Data Sheet
    $1,749.00
  3. PIE 334+ Milliamp Loop Diagnostic Calibrator

    Have you ever replaced a "faulty" transmitter only to find the problem was somewhere else in the loop? And did you end up throwing the transmitter away after you fixed the other problem "just in case" the transmitter was faulty? If you find a loop where the transmitter is calibrated correctly but all the readings elsewhere in the loop have a fixed offset, this is due to Zero Shift. This zero shift is typically caused by some current in the loop bypassing the transmitter. This might be caused by ground faults, moisture or corrosion. If you have some loops that are erratic after it rains, there may be moisture present in a junction box where insulation has broken down. Turn on Ground Leak Detection and use the PIECAL 334Plus to power up the loop. Any current that isn't controlled by the transmitter or other current control element will be indicated as leakage on the PIECAL 334Plus display. The PIECAL 334Plus powers up the 2-Wire transmitter or loop and indicates the total current and the uncontrolled current. This provides information useful in troubleshooting loop errors.

    Download Data Sheet
  4. PIE 422 Automated Thermocouple Calibrator 14 Types

    The PIECAL 422 is functionally equivalent to similar calibrators with five digit displays, knobs and switches. The PIECAL 422 gives you advantages of an updated design while maintaining the familiar, time proven ease of use of similar calibrators. Choose the J, K, T, E, R, S, B, N, G, C, D, L (J DIN), U (T DIN) & P (Platinel); -13.000 to 80.000 mVand get a thermocouple calibrator with a backlit display, automatic stepping, simultaneous display of temperature and millivolt reading, a rubber boot and rugged switches with the same high accuracy.

    Download Data Sheet
    $1,399.00
  5. PIE 422+ Diagnostic Thermocouple and mA Calibrator

    The PIE 422Plus has all the functionality of the PIE 422 Thermocouple Calibrator with a built-in Milliamp Calibrator. Dual Channel High Accuracy T/C Calibrator with 14 T/C types mV; milliamp channel includes Patented Current Leakage test.

    Download Data Sheet | Download Manual
    $1,649.00
  6. PIE 434 Automated Diagnostic 4-20 mA Calibrator

    The Practical Instrument Electronics (PIE) 434 automated diagnostic 4-20 mA calibrator allows you to check, calibrate and measure all of your current signal instruments in a 4-20 mA DC loop. It can be used at any access point in your loop. You can calibrate recorders, digital indicators, stroke valves or any instruments that get their input from a 4-20 mA loop. Quickly diagnose ground fault and current leakage with the PIE 434 automated diagnostic 4-20 mA calibrator's loop diagnostic technology. PIE 434 calibrators also feature automatic output stepping and ramping. Press and hold the dial to automatically step from 4-20 in two, three or five steps or choose a continuous ramp.

    Download Data Sheet
    $1,099.00
  7. PIE 510B RTD Simulators

    The PIECAL Model 510B simulates RTD resistances into all types of instruments such as transmitters, recorders, controllers, alarms, data acquisition, and computer systems. The PIECAL 510B is a superior replacement for decade boxes, so there is no need to lug a decade box around or be prone to error by reading RTD tables incorrectly. The PIECAL 510B has better accuracy and functions of many higher priced RTD calibrators.

    Download Data Sheet | Product Manual
  8. PIE 511B Ten Type RTD Plus Ω Simulator

    The PIECAL 511B simulates RTD resistances into all types of instruments such as transmitters, recorders, controllers, alarms, data acquisition, and computer systems. The PIECAL 511B is a superior replacement for decade boxes, so there is no need to lug a decade box around or be prone to error by reading RTD tables incorrectly. The PIECAL 511B has better accuracy and functions of many higher priced RTD calibrators.

    Download Data Sheet | Product Manual
  9. PIE 520B Thermocouple Simulators

    The PIECAL 520B Thermocouple Simulator simulates a dedicated standard thermocouple curve over the entire industrial temperature range. The PIECAL 520B provides precise temperatures for inputs to all types of instruments such as transmitters, recorders, controllers, alarms, data acquisition, and computer systems. PIECAL 520B is cold-junction compensated for changes in ambient temperature. The PIECAL 520B offers the highest performance and functions in its class by exceeding the accuracy and functions of many higher priced thermocouple calibrators.

    Download Data Sheet | Product Manual
  10. PIE 521B Thermocouple Simulators

    The low cost PIECAL 521B is an “easy as PIE” to use thermocouple source for checkout and calibration of all thermocouple instruments in the field, shop or control room.

    Download Data Sheet | Product Manual
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