AI-TEK T77630-70 TACHPAK 30 Series Dual-Channel Digital Process Tachometers

Product Item : T77630-70
Product Brand : Other
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Product Description
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The AI-TEK T77630-70 is a premium, explosion-proof tachometer from the renowned TACHPAK® 30 Series of dual-channel digital process tachometers . Engineered by AI-TEK Instruments (formerly AIRPAX), this advanced instrument is specifically designed for critical speed monitoring, protection, and control applications in the most demanding and hazardous industrial environments .

What is the AI-TEK T77630-70?

The T77630-70 is a microprocessor-based computing tachometer that measures input frequency from rotating machinery and converts it into actionable data . As a dual-channel instrument, it processes signals from two independent speed sensors simultaneously, providing redundancy or enabling complex calculations like speed difference, ratio, or direction sensing .

The "-70" suffix designates the Explosion-Proof enclosure, making this model suitable for installation in Division 1/Zone 1 hazardous locations where flammable gases, vapors, or dust may be present . It is widely deployed in oil refineries, chemical plants, gas processing facilities, and other high-risk industrial settings .

Key Features & Benefits

Hazardous Location Rating

The T77630-70 features a heavy-duty explosion-proof housing weighing approximately 42-49 lbs (depending on configuration), ensuring safe operation in explosive atmospheres while protecting the internal electronics from physical damage and corrosion .

Universal Power Supply

Accepts a wide range of input power: 80-264 VAC (50/60 Hz) and 12-30 VDC, allowing global installation without modification .

Dual-Channel Input Flexibility

Compatible with sinusoidal signals from passive magnetic sensors (like the AI-TEK 70085 series) and square wave TTL signals from active sensors .

Accepts bi-directional Hall effect sensors to decode quadrature signals and indicate rotational direction .

Multiple Output Options

Analog Output: User-programmable 0-20 mA, 4-20 mA, or -20 to 0 to +20 mA (bi-directional capability) for driving external meters or PLC inputs .

Relay Outputs: (2) mechanical Form C relays rated at 6 A @ 277 Vac for high-power switching, and (2) solid-state Form A relays rated at 0.4 A @ 60 Vac/DC for fast response .

RS485 Communication: Utility RS485 allows full remote programming and data transmission over distances up to 8000 feet .

Blazing Fast Response Times

Analog Output: 7.6 ms response

Mechanical Relays: 16.5 ms response

Solid-State Relays: 2 ms response

Exceptional Accuracy

Analog Output Accuracy: 0.1% over temperature and load

Relay Accuracy: 0.005%

Internal Instrument Accuracy: ±0.005%

Flexible Programming

TACHLINK® Software: Windows-based PC software via USB 2.0 or RS485 connection for comprehensive configuration, diagnostics, and real-time data logging .

Remote Display Programming: Compatible with up to 8 TACHTROL® Plus remote displays for convenient local monitoring and configuration .

Security Mode: Prevents unauthorized access to programming parameters .

Advanced Computational Power

9 Computed Functions: Mathematical manipulation of input signals including averaging, ratio, difference, and logic operations .

Signal Normalization: User-defined inputs for logic levels, alarm setpoints, and hysteresis .

Multiple Operating Modes: Rate, period, or counter modes .

Technical Specifications

Parameter Specification

Model Number T77630-70

Series TACHPAK® 30

Input Power 80-264 VAC, 50/60 Hz; 12-30 VDC

Enclosure Type Explosion-Proof