SECTION I IDENTIFICATION AND DESCRIPTION

TB 9-4920-453-35

SECTION I

IDENTIFICATION AND DESCRIPTION

1. Test Instrument Identification. This bulletin provides instructions for the calibration of Vibration

Monitoring Kit, Consolidated Electrodynamics, Type 1-117. The manufacturer's manual and TM 55-

4920-243-15 were used as the prime data source in compiling these instructions. The equipment being

calibrated will be referred to as the TI (test instrument) throughout this bulletin.

a. Model Variations . None.

b. Time and Technique . The time required for this calibration is approximately 2 hours, using the

DC and low frequency technique.

2. Forms, Records, and Reports. Forms, records, and reports required for calibration personnel at

all levels are prescribed by TB 750-25.

3. Calibration Description. TI parameters and performance specifications which pertain to this

calibration are listed in table 1.

Table 1. Calibration Description

Test instrument parameters

Performance specifications

Input requirement

115 V ±10%; 50, 60 or 400 Hz; 30 W

Displacement measurement normal

Range: 50 to 1000 Hz

Accuracy: ±4% (without filter input)

sensitivity range (DX1) frequency response

Sensitivity

0.005-in. p-p displacement for FS indication

(maximum attenuation)

Displacement measurement high sensitivity

Range: 50 to 100 Hz

range (DX0.1) frequency response

Accuracy: ± 4% (without filter input)

Sensitivity

0.0005-in. p-p displacement for FS indication

(unattenuated)

Velocity measurement, high sensitivity

Range: 5 to 5000 Hz

range (VX0.1) frequency response

Accuracy: ± 3% (without filter input)

Sensitivity

FS indication for any input from 25 to 180 mV

Linearity

± 3% of FS at all frequencies

Input line-voltage change

Maximum input line voltage change will cause

less than 2% change in amplifier gain

NOTE

Calibration of vibration transducers cannot be accomplished

at the transfer level. Transducers are calibrated in

accordance with instructions provided in TB 43-180.

CHANGE 1