Reference Standards 

The reference standards used by our Technicians are maintained and calibrated at regular intervals.  Below are several examples of reference standards used. 

Fluke 725   Multifunction Process Calibrator 

  • Small, streamlined shape makes it easy to carry.
  • Rugged, reliable design stands up to field use.
  • Easy to read measure/source screen lets you view input and output simultaneously .
  • Measure volts, mA, RTDs, thermocouples, frequency, and ohms to test sensors and transmitters.
  • Source/simulate volts, mA, thermocouples , RTDs, frequency, ohms, and pressure to calibrate transmitters.
  • Measure/source pressure using any of 28 Fluke 700Pxx Pressure Modules.
  • Source mA with simultaneous pressure measurement to conduct valve and I/P tests.
  • Support flow meter testing with frequency and CPM functions.
  • Perform fast linearity tests with auto step and auto ramp features.
  • Power transmitters during test using loop supply with simultaneous mA measurement.

Fluke 718 Pressure Calibrator

  • Built-in pressure / vacuum hand pump, with vernier and bleed valve.
  • Pressure measurement to 0.05% of full span, using an internal pressure sensor.
  • Pressure measurement to 10,000 psi / 700 bar using any of the Fluke-700Pxx Pressure Modules.
  • Wide range of selectable measurement units for pressure.
  • Current measurement with 0.025% accuracy and 0.001 mA resolution.
  • 24 volt loop power supply.
  • Min-Max Hold functions.
  • Compact size and weight.
  • Simple, push-button user interface.
  • Rugged and reliable, ideal for field use.

Fluke 700 PO1

  • Display pressure readings in any of 10 different pressure units you specify in the calibrator setup.
  • Rugged urethane molded case protects the module from rough handling and harsh conditions.
  • Features internal temperature compensation from 0ºC to 50ºC for full-accuracy performance .
  • Includes NIST-traceable calibration certificate.
  • Module can be calibrated locally using the Fluke 700PCK Pressure Calibration Kit, a PC, and a precision pressure source.

Hart 1521 / 5613 Temperature Probe and Readout

  • Reads PRTs/RTDs to ±0.025°C and thermistors to ±0.005°C.
  • Model 1522 stores multiple data sets totaling 10,000 readings.
  • INFO-CON connector allows interchangeable use of calibrated probes.
  • INFO-CON eliminates errors from programming probe data.

Vaisala HM 141

  • RH measurement range 0-100% RH
  • ± 1% accuracy
  • Temperature measurement range -40  - +100 °C
  • Calculates dewpoint, wetbulb, temperature, absolute humidity and mixing ration.
  • Versatile and easy to use
  • Incorporates Vaisala HUMICAPSensor
  • Excellent stability
  • Data collection with serial line download capability
  • NIST traceable

1433 Decade Box

  • Decade Resistors are primarily intended for precision measurement applications where their excellent accuracy of ±0.01%, stability, and low zero resistance are important.
  • Precision accuracy of +0.01%
  • Resistance range from 10 mW to 11.1111 MW
  • Dust proof, long life switches with solid silver contacts
  • Good frequency characteristics
  • Low temperature coefficient
  • Excellent stability
  • Low zero resistance


61533 AMERICAN LOOP #1 - BEND, OR 97702 - PHONE: (541)330-1687 FAX: (541)388-8273 CCB#132555
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