<SEC-DOCUMENT>0000914190-12-000470.txt : 20120808
<SEC-HEADER>0000914190-12-000470.hdr.sgml : 20120808
<ACCEPTANCE-DATETIME>20120808150845
ACCESSION NUMBER:		0000914190-12-000470
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20120718
FILED AS OF DATE:		20120808
DATE AS OF CHANGE:		20120808

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MARINO JOSEPH A
		CENTRAL INDEX KEY:			0001283123

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-09587
		FILM NUMBER:		121016622

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ELECTRO SENSORS INC
		CENTRAL INDEX KEY:			0000351789
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		IRS NUMBER:				410943459
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		6111 BLUE CIRCLE DR
		CITY:			MINNETONKA
		STATE:			MN
		ZIP:			55343-9108
		BUSINESS PHONE:		9529300100

	MAIL ADDRESS:	
		STREET 1:		6111 BLUE CIRCLE DR
		CITY:			MINNETONKA
		STATE:			MN
		ZIP:			55343
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2012-07-18</periodOfReport>

    <dateOfOriginalSubmission>2012-07-20</dateOfOriginalSubmission>

    <issuer>
        <issuerCik>0000351789</issuerCik>
        <issuerName>ELECTRO SENSORS INC</issuerName>
        <issuerTradingSymbol>ELSE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001283123</rptOwnerCik>
            <rptOwnerName>MARINO JOSEPH A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2900 LONE OAK PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 130</rptOwnerStreet2>
            <rptOwnerCity>EAGAN</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55121</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>4.15</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2012-07-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2012-07-18</value>
            </exerciseDate>
            <expirationDate>
                <value>2022-07-18</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2500</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes></footnotes>

    <remarks>This amendment is being filed solely to add the written authorization to the previously filed Form 4.</remarks>

    <ownerSignature>
        <signatureName>/s/ Bradley D. Slye as Attorney-in-Fact for Joseph A. Marino pursuant to Power of Attorney filed herewith.</signatureName>
        <signatureDate>2012-08-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>marinopoa.htm
<DESCRIPTION>MARINO POWER OF ATTORNEY
<TEXT>
<HTML><BODY><PRE>POWER OF ATTORNEY





 The undersigned hereby constitutes and appoints Bradley D. Slye

("Attorney-in-Fact"), the undersigned's true and lawful attorney-in-fact

and agent with full power of substitution and resubstitution, for the

undersigned and in the undersigned's name, place and stead, in any and

all capacities, to sign any or all Forms 3, 4 or Forms 5 relating to

beneficial ownership of securities of Electro Sensors, Inc. (the

"Issuer"), to file the same, with all exhibits thereto and other

documents in connection therewith, with the Securities and Exchange

Commission and to deliver a copy of the same to the Issuer, granting unto

said attorney-in-fact and agent full power and authority to do and

perform each and every act and thing requisite and necessary to be done

in and about the premises, as fully to all intents and purposes as the

undersigned might or could do in person, hereby ratifying and confirming

all said attorney-in-fact and agent, or his or her substitute or

substitutes, may lawfully do or cause to be done by virtue thereof.  The

undersigned acknowledges that the foregoing attorney-in-fact, in serving

in such capacity at the request of the undersigned, is not assuming any

of the undersigned's responsibilities to comply with Section 16 of the

Securities Exchange Act of 1934.





 This Power of Attorney shall remain in effect until such time as

the undersigned is no longer subject to the provisions of Section 16 of

the Securities Exchange Act of 1934 with respect to securities of the

Issuer or until this Power of Attorney is replaced by a later dated Power

of Attorney or revoked by the undersigned in writing.





 The undersigned hereby indemnifies the Attorneys-in-Fact for all

losses and costs the Attorneys-in-Fact may incur in connection with or

arising from the Attorneys-in-Fact's execution of their authorities

granted hereunder.





 IN WITNESS WHEREOF, the undersigned has caused this Power of

Attorney to be executed as of this 2nd day of August, 2012.





     /s/ Joseph A. Marino







</PRE></BODY></HTML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
