**EXHIBIT 31.1**

 

**CERTIFICATIONPURSUANT TOSECTION 302 OF THE SARBANES OXLEY-ACT OF 2002**

 

I, Bradley D. Slye, Chief Executive Officer and Chief Financial Officerof Electro-Sensors, Inc., certify that:

 

1.               I have reviewedthis quarterly report on Form 10-QSB of Electro-Sensors Inc.

 

2.               Based on myknowledge, this quarterly report does not contain any untrue statement of amaterial fact or omit to state a material fact necessary to make the statementsmade, in light of the circumstances under which such statements were made, notmisleading with respect to the period covered by this quarterly report;

 

3.               Based on myknowledge, the financial statements, and other financial information includedin this report, fairly present in all material respects the financial condition,results of operations and cash flows of the small business issuer as of, andfor, the periods presented in this report;

 

4.               The small businessissuer’s other certifying officers and I are responsible for establishing andmaintaining disclosure controls and procedures (as defined in Exchange ActRules 13a-15(e) and 15d-15(e)) for the small business issuer and have:

 

(a)          Designed such disclosure controls andprocedures, or caused such disclosure controls and procedures to be designedunder our supervision, to ensure that material information relating to thesmall business issuer, including its consolidated subsidiaries, is made knownto us by others within those entities, particularly during the period in whichthis report is being prepared;

 

(b)         Evaluated the effectiveness of the smallbusiness issuer’s disclosure controls and procedures and presented in thisreport our conclusions about the effectiveness of the disclosure controls andprocedures, as of the end of the period covered by this report based on suchevaluation; and

 

(c)          Disclosed in this report any change in thesmall business issuer’s internal control over financial reporting that occurredduring the small business issuer’s most recent fiscal quarter (the smallbusiness issuer’s fourth fiscal quarter in the case of an annual report) thathas materially affected, or is reasonably likely to materially affect, thesmall business issuer’s internal control over financial reporting; and

 

5.               The small businessissuer’s other certifying officers and I have disclosed, based on our mostrecent evaluation of internal control over financial reporting, to the smallbusiness issuer’s auditors and the audit committee of the small businessissuer’s board of directors (or persons performing the equivalent functions):

 

(a)          All significant deficiencies and materialweaknesses in the design or operation of internal control over financialreporting which are reasonably likely to adversely affect the small businessissuer’s ability to record, process, summarize and report financialinformation; and

 

(b)         Any fraud, whether or notmaterial, that involves management or other employees who have a significantrole in the small business issuer’s internal control over financial reporting.

 

 
| August 14, 2003 | /s/ Bradley D. Slye                                             |
|----------------------|-----------------------------------------------------------------|
|                 | Bradley D. Slye                                                 |
|                 | [Principal Executive Officer and Principal  Accounting Officer] |

 

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