Overview: The document provides technical specifications and details for the Model 720 Absolute Capacitance Manometer, a device used for measuring vacuum pressure in various applications such as semiconductor manufacturing, absorption chillers, lasers, autoclaves, vacuum packaging, freeze drying, and vacuum distillation.

Applications: The Model 720 is suitable for a wide range of applications including semiconductor processes, absorption chillers, lasers, autoclaves, vacuum packaging, freeze drying, and vacuum distillation.

Features: Key features of the Model 720 include a wide compensated operating temperature range, CE mark compliance, and protection against miswiring. It is designed with a rugged construction and high overpressure capability, making it ideal for demanding applications.

Specifications: The manometer is available in standard Torr, kPa, and mbar vacuum ranges. It uses a variable capacitance sensor design with an Inconel diaphragm and an insulated electrode. The device offers high accuracy and thermal stability, with accuracy options of ±0.5% or ±0.25% of reading.

Pressure Ranges and Proof Pressure: The document lists various pressure ranges and their corresponding proof pressures in mbar, kPa, and Torr.

Accuracy and Stability: The Model 720 provides accuracy of ±0.5% of reading, with an optional ±0.25% of reading. It has infinite resolution limited only by output noise level and a response time of 20 milliseconds. Long-term stability is ±0.5% FS per year.

Environmental Data: The operating temperature range is -20 to +80°C (-4 to +176°F), and the storage temperature range is -40 to +85°C (-40 to +185°F). The device can withstand shock up to 50 g during operation.

Physical Description: The manometer features a stainless steel case, with electrical connections available as screw terminal or 9 Pin D-Sub. The wetted material is Inconel, and the cavity volume is less than 6.2 cc. The approximate weight is 137 g.

Ordering Information: The document provides a detailed breakdown of the ordering code for different configurations of the Model 720, including pressure range, type of fitting, output, and accuracy options.

Electrical Data: The device operates on a 3-wire circuit with excitation/output options of 12 to 30 VDC for 0-10 VDC output and 9 to 30 VDC for 0-5 VDC output. Power consumption is less than 200 mW, and output impedance is less than 1 ohm.

Compliance and Standards: The Model 720 complies with CE standards for heavy industrial use and is ISO 9001:2000 certified. Calibration is NIST traceable, and quality standards are based on ANSI-Z540-1.