Bolt Monitor

The Bolt Monitor uses ultrasonic technology to measure the load or elongation of a fastener. Designed for ease-of-use, the Bolt Monitor is a hand-held unit with a straight forward display. To ensure stable readings, the display includes peak and repeatability indicators. Data collected with the Bolt Monitor can be downloaded directly to either a printer or an IBM^® compatible PC for quick and easy reporting and analysis.

Description of Features:

1.	Power Key.
2.	Arrow keys allows scrolling through selections.
3.	Enter key stores data information.
4.	Menu key advances and makes changes in selection.
5.	Stability indicator.
6.	Peak amplitude bar graph.
7.	Ambient temperature.
8.	Indicates load or elongation.
9.	Indicates bolt group.
10.	Measurement mode indicator.
11.	Gain setting of receiver.

* The Bolt Monitor displays the load or elongation of a fastener by ultrasonically measuring the change of length and the change in sound velocity.

* Data can be transmitted via RS232 to an IBM^® compatible PC directly from the Bolt Monitor with utility software.

* Limits-mode indicates a graphical presentation of bolt tension and limits.

* Easy-to-operate, hand-held, battery operated unit. No field set up is necessary.

* Peak and repeatability indicators ensure stable readings from transducers.

* Data can also be downloaded directly to a printer for easy reporting and analysis.

General Information Specifications*

Bolt Length measurement range:	1.00" to greater than 70" standard
Load measurement range:	100 pounds to unlimited
Elongation measurement range:	.0001 inches to unlimited
Operating temperature range:	0° to 50° C
Maximum number of Groups:	10
Maximum number of Bolts:	1500
Temperature Compensation:	Manual input
*May vary depending on application environment.

Physical Description

Unit Size -	5.5 inches wide (140 mm). 10 inches long (254 mm). 3.5 inches deep (89 mm).
Weight -	1 lb. 12 oz (794 g).
Keyboard -	Membrane switch panel with dedicated functions.
Case -	ABS plastic.
Data Out -	DB9M, produces 20 column ASCII text reports at 9600 baud.
Transmission -	Data set-up programmed from BoltMike SMII or PC with supplied utilities software.

Display

Presentation -	Graphic backlit, 128 x 64 pixels
Display Viewing Area -	1.2 x 2.4 inches

Power Supply

Battery -	8 cell rechargeable Nicad.
Continuous Operating Time -	4 hours.
Charger -	120/230 volt switchable with LED indicator.

Ultrasonics

Pulser -	Amplitude 150 volts Fall Time < 30 nsec.
Receiver -	Maximum gain 70 db Bandwidth 1 to 15 MHz
Timing -	Clock frequency 50 MHz
Stability -	25 ppm.

Material Constants
Item	English	Metric
Vo(velocity)	in/s	m/s
CP (temp coef)	x per degree F ( / °)	x per degree C( / °)
Eo (elas.mod)	psi	Mpa
K (dV/force)	in/s/psi	m/s/Pa
Geometry Factors
L Approx.	inches	mm
L Effective	inches	mm
Area	in²	mm²
Measured Quantities
L-REF	inches	mm
Elongation	inches	mm
Load	pounds	KN
Temperature	degrees F °	degrees C °
Time	nsec	nsec