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"Proven Equipment for the Oil & Gas Industry for over 25 years."

Apex Instruments Featured Products

Crystal XP3i Digital Pressure Gauge

  • Ultra rugged, intrinsically safe, digital test gauge with “0.05% of reading”, “0.02% of full scale”, or “0.05% of full scale” accuracy levels

  • Bluetooth Connectivity - CrystalConnect

  • Intrinsically Safe Recorder

  • Record 200 Million Data Points

  • Pressure Safety Valve Test

  • Calibration Reminders and Alerts


New Crystal HPC50

  • Accuracy: 0.035% of Reading

  • Gauge, Absolute, and Differential Pressure to 15,000 psi

  • Combined Pressure and mA Loop Calibrator

  • Fully Temperature Compensated from -20 to 50 °C

  • Current, Voltage, Switch Test, Temperature

  • External APM Pressure Module

  • Intrinsically Safe


Fluke 789/773 Bundle

  • The Fluke 789/773 BU kit includes Fluke's 789 ProcessMeter and Fluke's 773 Milliamp Process Clamp Meter with Loop Power.

  • 789: Precision 1000V, 440mA TRMS DMM; 0.1% DC voltage accuracy; 0.05% DC current accuracy; Frequency measurement to 20 kHz

  • 773: 4-20 mA and DC volts source/measure; DC voltage measurement verifies 24V power supplies or voltage I/O signals; source DC voltage to test input devices

789 - 773 Bundle.JPG

Ralston Nitro-Pak

  • Self contained unit provides a precise nitrogen source for calibrating differential and static pressure instrumentation using an external pressure calibrator

  • Pressure Calibrations up to 3,000psi


Apex Instruments, Inc - a leading supplier of Petrochemical equipment in the Rocky Mountain & High Plains Region for over 25 years.

We supply cutting edge measurement technology & proven devices to benefit our customer's operating efficiency & accuracy.

Apex Instruments has an ISO 17025 Accredited Metrology Calibration Lab that provides Accredited Calibrations, NIST Tracelable calibrations, and repairs for test equipment. 

Founded in 1998, Apex Instruments is headquartered in Centennial, Colorado.

We have sales representatives that cover the States of Colorado, New Mexico, Oklahoma, Utah, Montana, Idaho, Nebraska, Kansas, Arkansas, North Dakota, South Dakota, Texas, and Wyoming.

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