500T-115VAC - VAS ENGINEERING - DORIC 500 SERIES DIGITAL TEMP INDICATOR

500T-115VAC - VAS ENGINEERING - DORIC 500 SERIES DIGITAL TEMP INDICATOR

The VAS Engineering Doric 500 Series (Model: 500T-115VAC) is a highly reliable, industrial-grade Digital Temperature Indicator engineered for precision temperature monitoring in rugged process environments.

Operating on a standard 115V AC power supply, this legacy-backed instrument provides highly accurate, real-time readouts from thermocouple or RTD sensors.

Known for its excellent noise rejection and robust build, the 500T-115VAC serves as a critical panel-mounted monitor in manufacturing lines, laboratories, and heavy industrial plants.

It converts low-voltage sensor signals into an easily scannable digital display, minimizing parallax errors and ensuring that operators can maintain strict thermal control over vital process loops.

Technical Parameter Table

Product Advantages and Features

Legacy Industrial Reliability: Time-tested design trusted across the process industry for long-term operational stability and calibration retention.

High-Contrast Digital Display: Offers crystal-clear temperature readouts from across the plant floor, eliminating the guesswork of analog dial meters.

Exceptional Noise Rejection: Built with advanced input filtering to block heavy electromagnetic interference (EMI) caused by surrounding motors and heavy switchgear.

Rugged Enclosure Architecture: Housed in a durable casing designed to slip directly into standard control room panels and withstand industrial vibrations.

Straightforward 115V AC Powering: Eliminates the need for external DC step-down transformers, piping line power directly into the rear terminals.

Application Cases

Industrial Heat-Treating Furnaces: Provides independent, high-visibility monitoring of thermal zones in metal and ceramic processing ovens.

Chemical and Petrochemical Processing: Used as a localized safety readout for pipeline temperatures, distillation columns, and storage tanks.

Food Processing and Pasteurized Lines: Monitors strict processing temperatures inside bulk ingredient vats and industrial baking lines.

HVAC and Boiler Monitoring: Installed directly into building automation panels to monitor main steam line and boiler exhaust temperatures.

Related Models & Other Models in the Same Series

The Doric 500 series encompasses various power options, display ranges, and sensor configurations tailored to different instrumentation loops:

500T-115VAC: Digital Temperature Indicator, 115V AC Input (Current Model)

500T-230VAC: Digital Temperature Indicator, 230V AC Input (for European/International power grids)

500T-24VDC: Low-Voltage Auxiliary Panel Model

510 Series: Digital Process Indicators with scaled linear voltage/current inputs (e.g., 4-20mA monitoring)

520 Series: Dual-input differential temperature indicators

Installation and Maintenance

Installation Guidelines

Panel Cutout Prep: Prepare a standard rectangular panel cutout corresponding to the unit's frame dimensions. Ensure the mounting surfaces are smooth and clean.

De-Energize Power Lines: Ensure the 115V AC line power supply is fully locked out and tagged out prior to making any terminal connections at the rear of the device.

Sensor Separation: Route your thermocouple or RTD signal wires away from high-voltage AC lines to prevent magnetic coupling and reading fluctuations.

Secure Mounting: Slide the indicator through the front panel cutout and lock it into place using the provided rear mounting brackets/screws. Do not over-torque.

Routine Maintenance and Calibration

Front Panel De-dusting: Periodically wipe down the front display lens with a soft, dry, anti-static cloth to remove grease and ambient factory dust.

Terminal Audits: During standard annual shut-down procedures, verify that the screw terminals on the rear connector block remain tightly secured against vibration loosening.

Calibration Verification: Check the indicator accuracy annually using a certified temperature simulator to ensure tracking loops stay perfectly true to sensor input curves.