🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Article View: sci.electronics
Article #7125

Re: Humidity Sensor Needed (Cheap!!!)

#7125
From: Ian Hawkins
Date: Thu, 03 Sep 1992 21:18
14 lines
1033 bytes
two humidity sensors available are :
1) Nemoto NPH-50A,  resistive ( a ceramic)
2) Philips H1 , capacitive (a foil coated film, data sheet 2322 691 90001)

By accuracy I presume you mean long term adherance to the
original humidity/electrical paramater characteristic combined
with a low (very low) temperature co efficient ?.  Neither sensor
is within 1% for some tests,  ie hysterisis during 10-90%
humidity scanning.  The nemoto is best for hysterisis (3%) and
the philips best for temp. coef. (0.1%/deg.C ) . Overall the
Philips looks by far the easiest sensor to work with.  The
nemoto will not work with a DC bias.  This is all from spec
sheets,  I havent yet used either sensor.
                Ian Hawkins
Technical Details
Message-ID: <1992Sep3.211859.1660@nessie.mcc.ac.uk>
Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!uknet!mucs!nessie!idh

Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!uknet!mucs!nessie!idh
From: idh@nessie.mcc.ac.uk (Ian Hawkins)
Newsgroups: sci.electronics
Subject: Re: Humidity Sensor Needed (Cheap!!!)
Message-ID: <1992Sep3.211859.1660@nessie.mcc.ac.uk>
Date: 3 Sep 92 21:18:59 GMT
Organization: Manchester Computing Centre
Lines: 14