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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Cuv5cmq0j1PNsKz35GpDEjpZ4AaOqhWpqagG7WUL2MZQqogEvUQJQpRRYvwhyg/x
 yY5lWd6vjT3HJQmx0Yc6aw==

<SEC-DOCUMENT>0000914190-06-000663.txt : 20061130
<SEC-HEADER>0000914190-06-000663.hdr.sgml : 20061130
<ACCEPTANCE-DATETIME>20061130110440
ACCESSION NUMBER:		0000914190-06-000663
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20061129
FILED AS OF DATE:		20061130
DATE AS OF CHANGE:		20061130

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MILLER GEOFFREY W
		CENTRAL INDEX KEY:			0001278022

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-09587
		FILM NUMBER:		061247154

	MAIL ADDRESS:	
		STREET 1:		12735 42ND PLACE N
		CITY:			PLAYMOUTH
		STATE:			MN
		ZIP:			55442-2350
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-11-29</periodOfReport>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001278022</rptOwnerCik>
            <rptOwnerName>MILLER GEOFFREY W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>12735 - 42ND PLACE N</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PLYMOUTH</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode>55442</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2006-11-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>100</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4.88</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>9900</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ GEOFFREY W. MILLER</signatureName>
        <signatureDate>2006-11-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
