Hi there Peter

The LM335 gives you 10mV/=B0K. So you better use shielded cable. I used t=
he
LM35 with about 4m
of cable and it worked fine for our application, a bit of switching noise
from the motors we were probing. You can average out your reading in the
software.

Regards
Thys

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Peter May
Sent: 07 February 2001 08:13
To: PICLIST@MITVMA.MIT.EDU
Subject: [PIC]: LM335
Importance: Low


I gave up on the DS18S20's and went to a simple LM335. It says in the dat=
a
sheet I can run a long cable to it and use it remotely. In the finished
product it will be within a couple of inches of the PIC but for bench
testing I want about 20 feet of cable. Would this introduce much noise in=
to
the analogue input?

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