I. Model Analysis

72059: Basic model of the 7200 series preamplifier

-01: Standard version (standard input/output, standard temperature range)

R: Rack-mount version (standard full-height card)

II. Product Positioning and Usage

Function: Receives signals from the 7200 series eddy current probes (such as 72072-01), processes them into standard voltage/alarm output, and realizes radial vibration, axial displacement, temperature difference, and eccentricity monitoring.

Application: Steam turbine generators, large compressors, industrial fans, etc., for the protection of rotating machinery.

Companion: Requires the combination of 72072-01 (14mm probe) + extension cable to form a complete monitoring system.

III. Core Technical Parameters

Input: Compatible with 7200 series eddy current probes (14mm)

Sensitivity: 7.87 mV/μm (200 mV/mil)

Linear range: 2.54 mm (100 mil)

Output: -24 to 0 VDC gap voltage; relay alarm contacts

Power supply: Backplane negative pressure power supply (-24 VDC typical)

Operating temperature: 0℃ to +60℃

Structure: Full-height card (Full-size), 7200 series rack installation

Channel: Single channel (one probe input, one monitoring)

IV. Differences from Similar Models

72059-01R: Standard rack version, without key lock

72065-01K: Keyed lock version (parameter error prevention)

72072-01: Companion 14mm probe

V. Replacement and Upgrade

The 7200 series has been discontinued / phased out. The mainstream upgrade is:

3300 XL series (3300/30 preamplifier + 330104 probe)

3500 series (3500/40 monitor, four channels, more functions)