Dear Mr. Mueller;

I subscribe to the MEM newsgroup and noticed your message on ph sensors.

If you are designing this part from scratch, we might be able to assist
you in reducing the overall size of the transmitter / sensor  with the
microcircuitry currently manufactured by DRC - Metrigraphics.

We currently have applications where active elements are attached to the
circuit and
rolled into a 1.0 mm tube and put into the body.

Trace sizes range from 5 microns (trace and space) and up.

I am sending a complete package of information regarding our processes
to include a
sample circuit.

If you have any further questions, please contact me.

Best Regards

Mike Bigelow
Technical Sales

Dynamics Research Corp.
Metrigraphics Div.
50 Concord Street
Wilmington, MA 01887

Tel:    978-658-6100   ext. 3063
Fax:    978-657-7765






> ----------
> From:         russ mueller[SMTP:muellrk@okstate.edu]
> Reply To:     russ mueller;mems-cc@ISI.EDU
> Sent:         Monday, April 20, 1998 9:24 AM
> To:   MEMS@ISI.EDU
> Subject:      pH sensor
>
> To whom it may concern:
>     My name is Russell Mueller and am a Masters student in Animal
> Science at Oklahoma State University.  My research project entails
> trying to develop a radiotelemetry pH sensor that will measure
> hind-gut
> pH in Horses feed varying pH  affecting diets.  We are having
> difficulties finding a sensor that will fit in a capsule about 1 inch
> long and a diamter of 3/4 of an inch.  If you have any information,
> ideas, or products on the market, your help would be greatly
> appreciated.  Thank you.
> Russell Mueller
> 205 Poultry Science
> Oklahoma State University
> Stillwater OK 74078
> (405) 744-7783
>
>
>