Tachometers

AI-Tek Instruments offers fast response and high-precision tachometers for monitoring and protection. Field programming allows easy installation and upgrading, while minimizing part number variations. Options include 0-20mAdc, 4-20mAdc, -20 to 0 to +20mAdc output, 5-digit display, RS485, 2 solid state relays, 2 mechanical relays, with standard, NEMA 4x or explosion proof enclosures.

Tachometers – Precision Speed Monitoring and Protection

A tachometer is an instrument designed to measure the rotational speed of a shaft or disk in revolutions per minute (RPM). In industrial and mission-critical environments, tachometers serve not only as indicators but also as monitoring and protection devices—triggering alarms or shutdowns when operating speeds go beyond safe limits.

AI-Tek Instruments offers a range of fast-response, high-precision tachometers designed for accurate measurement and reliable control across industries such as water utilities, gas and petrochemical plants, transportation, and defense systems. These devices can be paired with AI-Tek speed sensors for complete speed monitoring solutions.

Key Advantages

• High Accuracy and Fast Response – Ensures precise speed tracking even in rapidly changing load conditions.

• Field Programming Capability – Allows easy on-site setup, calibration, and upgrading, minimizing downtime and reducing part number variations.

• Multiple Output Options – Models available with 0–20 mA DC, 4–20 mA DC, or –20 to 0 to +20 mA DC outputs for seamless integration with PLCs and control systems.

• Display and Communication – Options include a 5-digit display for local readout, RS485 communication for remote monitoring, and relay outputs for control actions.

• Relay Configurations – Choose between 2 solid-state relays or 2 mechanical relays for alarms, control circuits, or shutdown systems.

Enclosure Types – Including NEMA-4X

AI-Tek tachometers are available in different enclosure types to match environmental and safety requirements:

• Standard / Panel Mount (IP20) – Suitable for clean, controlled environments such as control rooms or equipment panels.

• NEMA-4X – A U.S. enclosure rating indicating protection against dust, dirt, rain, splashing water, and hose-directed water, plus corrosion resistance. Ideal for outdoor, marine, and chemical plant environments.

• Explosion-Proof – Engineered to contain any internal explosion and prevent ignition of surrounding flammable gases, vapors, or dust. Suitable for hazardous locations in oil & gas, mining, and military applications.

Representative Models

Applications – Water, Gas, and Military

Water Utilities – Monitor pump and turbine speeds to maintain stable water flow, prevent cavitation, and trigger shutdowns before mechanical damage occurs.
Gas & Petrochemical – Ensure compressors, blowers, and turbines operate within safe RPM limits in hazardous environments.
Military & Defense – Control propulsion systems, generators, and rotating equipment where reliability is mission-critical.