December 11, 2008

Counterfeit Omaya Automation Apparatus Equipment Co., Ltd. Transducers

  • Type of Notification: Counterfeiting
  • FM Approval Status: Not FM Approved

Alert Summary

FM Approvals has been made aware of counterfeit electrical equipment being produced and marketed from Omaya Automation Apparatus Equipment Co., Ltd.

Company Identity

Omaya Automation Apparatus Equipment Co., Ltd.
Central Industrial Zone, Yueqing City
Zhejiang Province

Product Identity

3100 Series Pressure Transducers.

Contact Information


Omaya Automation Apparatus Equipment Co., Ltd. (Omaya) is advertising and selling model YA-T1000, YA-T1500 and Type YA-500X and YA-550X transducers as intrinsically safe and certified by Factory Mutual (FM) or FM Approved. These claims are false.

The following FM Approvals clients have notified us that their products have been reproduced by Omaya without their permission and that Omaya has reproduced product manuals associated with those products:

State Route 2, Box 305
Newell, WV 26050

ControlAir Inc.
8 Columbia Dr.
Amherst, NH 03031

Hazard Involved

The products in question are electro-pneumatic transducers and bear the labeling indicating they are certified for use in hazardous locations. FM Approvals has not tested nor certified these products. The use of these products may present a serious safety concern for the user.

Using This Product?

If you suspect that you are in possession of any of the affected equipment listed above bearing the FM Approvals certification marking, please bring it to the attention of: 

Robert Lovell

Norwood, MA, United States

+1 (1) 781-255-4820


Counterfeit Indicator

  • omaya

    Figure 1

  • omaya

    Figure 2

  • omaya

    Figure 3

Figure 1 (courtesy of Marsh-Bellofram)

Figure 2 (courtesy of Marsh-Bellofram)

Figure 3 (courtesy of ControlAir)

This product was purchased by Marsh-Bellofram from the Omaya Web site. The FM Approvals certification mark may lead a user to conclude this product is Intrinsically Safe for Class I, Division 1, Groups A, B, C, D and Nonincendive for Class I, Division 2, Groups A, B, C, D. These labeling criteria have not been verified by FM Approvals. Installation and use of this product may cause ignition or explosion in designated hazardous location areas or zones.

The counterfeit product is on the left and the authentic product is on the right. The pointers identify telltale aspects of the two products.

This figure highlights some of the telltale indicators of the counterfeit transducer (left) and the authentic ControlAir product (right). The supply conditions on the counterfeit label are one indicator of the safety issues associated with this counterfeit.