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Anonymous Poster

Chlorine Sensors

03/23/2009 9:57 AM

Can anyone tell me how a closed loop chlorine measurement system works. What kind of signal does a chlorine sensor give? For instance I know that a thermocouple transduces temperature to mV. What happens with a chlorine sensor?
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The JMAN
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Join Date: May 2006
Posts: 289
Good Answers: 19
#1

Re: Chlorine Sensors

03/23/2009 4:20 PM

Guest,

As far as I am aware, amperometric electrochemical sensors that measure chlorine gas concentrations also results in a linear output in the milliampere range.

(typical sensor output from 1 to 20 MA)

=================================================

Just my $0.02...
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lyn
Guru

Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#2

Re: Chlorine Sensors

03/23/2009 7:22 PM

Membrane-covered amperometric measuring cell
for free chlorine

Part Number:

20263040CUSTOM

Datasheet:

20.2630, pages 1-6

Membrane Type:

hydrophobic PTFEOR hydrophilic
(reduced pH dependence)

pH Range:

5.5 to 8OR4 to 12

pH Dependence:

- - -within range
5 to 7 pH
no loss of slope

Measurement Ranges:
(select below)

0.000—0.500 mg/l (ppm)
0.00—1.00 mg/l (ppm)
0.00—2.00 mg/l (ppm)
0.00—5.00 mg/l (ppm)
0.00—10.00 mg/l (ppm)		0.00—2.00 mg/l (ppm)
0.00—5.00 mg/l (ppm)
0.00—10.00 mg/l (ppm)

Power Supply:

12 - 30 V / DC
(isolation is recommended)

Output Signal:

4 - 20 mA, 2-wire

Incident Flow Velocity:

approx. 15cm/sec

Operating Temperature:

>0 to +45º C

Dimensions:
220 mm /
(length)		25mm
(diameter)

Applications:

aqueous solutions (e.g., drinking or pool water,

as well as service, process or cooling water)

10 seconds on google got me this
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#3

Re: Chlorine Sensors

03/26/2009 12:53 PM

Check out sume instrument suppliers' websites. Endress + Hauser and Emerson Process (usual disclaimer on both) spring immediately to mind.

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