Omega Speaker Systems M1760 specifications Description BCM-1 Hookup, Mounting, Specifications

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BCM-1

Bridge Completion Module

M1760/1106

INSTRUCTION

SHEET

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DESCRIPTION

BCM-1 HOOKUP

The OMEGA® BCM-1 Bridge Completion Module provides a convenient means of completing the Wheatstone Bridge circuit used for strain gage measurements. The module can be used for quarter bridge measurements with 120 or 350 ohm gages or for half bridges with gages of any resistance. Quarter bridges with two or three wire hookup can be accommodated. In addition, a bridge balance adjustment potentiometer is provided to zero the bridge output. Screw terminals are provided for strain gage, excitation, and output signal connections.

The BCM-1 is constructed using precision resistors with 5 PPM/°C temperature coefficient for maximum temperature stability. The unit is completely encapsulated for use in rugged environments and can be mounted by using the screw holes provided in the baseplate.

MOUNTING

The BCM-1 module is equipped with a baseplate which provides holes for screw mounting. Where required, it can also be glued or secured in place with double-sided tape or Velcro.

SPECIFICATIONS

Maximum Excitation

 

120 Ohm Bridge:

10 VDC

350 Ohm Bridge:

16 VDC

Temperature Limits:

-20 to 80°C

 

(-4 to 176°F)

Temperature Effects:

±1.5 microvolts/volt/°C

Zero Adjust:

±6 mV/V

Resistor Tolerance:

±0.1%

Resistor TEMPCO:

5 PPM/°C

Dimensions:

3.0" W x 1.25" H x 1.0" D

 

(50.8 mm x 31.8 mm x

 

25.4 mm)

Mounting Holes:

0.175" holes (2) on

 

2.5" center

Connections to the BCM-1 are made using the screw terminals on the top of the unit using stripped wires. One side has four terminals used for excitation and signal output connections. The excitation voltage is connected to the outer terminals labeled +EX and -EX. The readout device is connected to the two center terminals which are labeled + and - Vout.

Connection of the strain gages to the BCM-1 depends on the particular application. For the proper hookup, refer to Figures 1-3.

 

BCM-1

 

+BRG

* FOR 2 WIRE

+SIG

GAGES INSTALL

 

JUMPER FROM

120

+SIG TO

*

120 TERMINAL

350

 

-BRG

FIGFigure.1 1/41Bridge. 1/4 Bridge120Ω Hook120Ω-UpHook-up

 

BCM-1

 

+BRG

* FOR 2 WIRE

+SIG

GAGES INSTALL

 

JUMPER FROM

120

+SIG TO

 

350 TERMINAL

350

 

*

 

-BRG

FIGFigure.2 1/42Bridge. 1/4 Bridge350Ω Hook350Ω-UpHook-up

BCM-1 +BRG

+SIG

120

350

-BRG

FIG.3Figure1/2 Bridge3. 1/2HookBridge-Up Hook-up

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M1760, M1106, BCM-1 specifications

Omega Speaker Systems has established a strong reputation in the audio industry with its innovative speaker models, notably the M1106, M1760, and BCM-1. Each of these products embodies cutting-edge technologies and distinct characteristics that cater to diverse audio needs and preferences.

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