• Document: 5485C HIGH-TEMPERATURE VELOCITY TRANSDUCER Installation Manual
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5485C HIGH-TEMPERATURE VELOCITY TRANSDUCER Installation Manual OVERVIEW The Metrix 5485C High-Temperature Veloc- ity Sensor is suitable for use in temperatures up to 375OC. It is designed for gas turbines and other machinery with high surface tem- peratures where a velocity signal is desired. The sensor’s moving-coil design requires no external power as it self-generates a signal 2-PIN CONNECTOR VERSION proportional to vibration velocity. (requires mating Model 4850-XXXX cable) FEATURES • Self generating, no power required • Stainless Steel Housing • Zero friction - infinite analog resolution APPLICATIONS • Large industrial gas turbines • Furnace fan monitoring FIXED ARMORED CABLE VERSION HAZARDOUS AREAS UL intrinsically safe for Class 1, Div. 1, Grps 1180 (A-D); Non-incendive for Class 1, Div. 2, Grps. (A-D). CSA intrinsically safe for: Class 1, Div. 1, Grps (A-D); ATEX/IECEx intrinsically safe for: EEx ia IIC T1-T6 Ga. DOC # M8109 • REV L (April 2018) INSTALLATION The sensitive axis of the transducer can be oriented in any direction. To ensure clean response to high frequency vibrations, the transducer must be securely mounted to a flat machined surface using four #6 (or 3mm) socket head screws. If a bracket is required, it should be of rigid construction to prevent spurious mechanical resonances in the pass band. WIRING In ordinary, nonhazardous locations the transducer should be wired according to Page 4 (drawing 7623, Sheet 2). In hazardous locations the wiring method depends upon the area classification. 1. In Class I, Div 1, Groups A, B, C & D or IEC Zone 0, Group IIC hazardous locations, the transducer may be connected through a zener diode safety barrier to the safe area receiver in accordance with Page 5 (drawing 7623, Sheet 3). 2. In Class I, Div 2, Groups A, B, C & D locations the transducer may be wired as in (1), or it can be wired without a safety barrier if wired in accordance with Page 6 (drawing 8096). ATEX/IECEx INPUT ENTITY PARAMETERS • Ui= 28v • Ii= 120mA • Pi= 625 mW • Ci= 0 • Li= 0.88mH max. SPECIFIC CONDITIONS OF USE In order to ensure temperature classification and safety, the power supply must adhere to the following: • Uo ≤ 28V • Io ≤ 120mA • Po ≤ 0.625W The temperature classifications and ambient temperature range can vary as follows: Max. Low Max. High Temp. Ambient Temp. Ambient Temp. Classification 45°C T6 60°C T5 -54°C 95°C T4 160°C T3 260°C T2 375°C T1 Doc# M8109 • REV L (April 2018) Page 2 of 8 Doc# M8109 • REV L (April 2018) Page 3 of 8 Doc# M8109 • REV L (April 2018) Page 4 of 8 Doc# M8109 • REV L (April 2018) Page 5 of 8 Doc# M8109 • REV L (April 2018) Page 6 of 8 SENSOR VERIFICATION CALIBRATION PROCEDURE Mount the 5485C on a shaker table and verify the RMS output per table below. CALIBRATION VERIFICATION TABLE 1 ips peak @ 150Hz Calibrated Sensitivity Calibrated Sensitivity RMS Output mV mV/in/s mV/mm/s Min/Max. 105 4.14 67/81 145 5.71 93/112 150 5.91 95/167 200 7.87 127/156 The test should be performed on a NIST traceable shaker at 1 ips, 150Hz. Metrix recommends that this procedure be performed every 3 years. NOTE: Due to the difficulties of field sensor verification, the +/- 5% sensitivity specification is relaxed to +/- 10%. The sensor should be returned to Metrix, Houston, Texas for metrology verification of factory calibration. Doc# M8109 • REV L (April 2018) Page 7 of 8 ENVIRONMENTAL INFORMATION This electroni

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