- 3538 Pinemont Dr Houston, TX 77018
A mechanical chart recorder provides a continuous record of pressure and temperature over time using a circular paper chart. For pipeline operators, oil & gas contractors, refineries, petrochemical facilities, and industrial manufacturers, chart recorders remain one of the most reliable methods for documenting test results and operating conditions.
Technology & Calibration Inc. has been manufacturing Tech Cal Recorders in Houston since 1984 and remains one of the few U.S. manufacturers still producing industrial mechanical chart recorders. Built with American-made parts and assembled at our Houston facility, every recorder is designed for dependable performance in demanding field and plant environments.
While digital systems have become common, many pipeline contractors, testing companies, and industrial facilities continue to rely on mechanical chart recorders because they provide:
For hydro testing, pipeline recommissioning, BOP testing, valve testing, and pressure system verification, mechanical chart recorders remain a trusted industry standard.
Tech Cal Recorders provide a continuous visual record of pressure and/or temperature changes over time.
Available in multiple pressure and temperature ranges, each recorder is calibrated to ±0.5% of full scale and built for:
Tech Cal Recorders are engineered for demanding industrial environments.
Available features include:
Each recorder is designed for reliable operation in oil & gas, petrochemical, refinery, manufacturing, and pipeline applications.
Unlike many suppliers, Tech Cal is both the manufacturer and calibration provider.
Advantages include:
Tech Cal also supports recorder accuracy through ISO/IEC 17025-accredited calibration services.
Both technologies have advantages.
Mechanical chart recorders offer:
Digital systems may offer data exports and remote monitoring, but many industrial users continue to prefer mechanical chart recorders for field testing and compliance documentation due to their simplicity and proven reliability.
Configure your recorder based on:
Starting at $1,925
Tech Cal mechanical chart recorders include a 1-year warranty covering manufacturer defects.
Our products are designed for long-term reliability and are supported directly by the team that manufactures them.
A mechanical chart recorder is used to document pressure and/or temperature over time on a circular paper chart. In Houston operations, these recorders are commonly used for pipeline recommissioning, hydro testing, valve and vessel testing, BOP documentation, well testing, and pressure system testing.
Yes. Technology & Calibration Inc. manufactures authentic Tech Cal Recorders at its facility in Houston using American-made parts. Tech Cal supports industrial buyers with recorders, OEM chart paper, markers, mounting accessories, and chart recorder calibration services.
Tech Cal mechanical chart recorders are used in oil & gas, pipeline, petrochemical, refinery, and industrial manufacturing applications. Across Houston facilities, they help teams document pressure and temperature conditions during testing, monitoring, and verification work.
Yes. Tech Cal Recorders are built in the USA with parts made in the USA. This supports product consistency, direct manufacturer support, and reliable access to recorder supplies and service.
Tech Cal Recorders are calibrated to 0.5% of full scale. This accuracy supports dependable pressure and temperature chart recording for industrial applications where clear documentation matters.
Tech Cal chart recorders are available in pressure, temperature, and combined pressure/temperature configurations to support a wide range of industrial monitoring applications. Models are offered in both single-pen and dual-pen designs, allowing users to select the recording capability that best fits their process requirements.
Tech Cal supports 8-inch and 12-inch circular chart recorders. OEM chart recorder paper is available in different sizes, rotations, and ranges to match the recorder configuration.
Yes. Tech Cal provides chart recorder calibration services and calibration support aligned with ISO/IEC 17025, the international standard for calibration laboratories. This helps Houston industrial teams maintain reliable recorder performance and documentation.
Tech Cal Recorders are available with mounting options such as portable, pipe mount, and wall mount configurations. Technical mounting drawings are available for 8-inch and 12-inch recorder models.
Tech Cal Recorders may be ready for delivery in as little as 2 days, depending on configuration and availability. For Houston production environments with testing deadlines, this fast turnaround helps reduce delays.
Our mechanical chart recorders include a 1-year warranty against manufacturer defects. This warranty supports customers purchasing recorders for oil & gas, pipeline, petrochemical, and manufacturing applications.
Mechanical chart recorders provide immediate visual documentation, require no software, operate without batteries, and create permanent paper records that are easy to review during testing, commissioning, and compliance activities.
