Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 23-07-2015, 09:48   #16
Registered User

Join Date: Nov 2014
Location: Vancouver
Boat: Ontario32
Posts: 26
Re: Perkins temperature gauge u/s

How do you test the sensor. Someone mentioned to boil some water, and chechk the resistance? The only test I seen on utube the person had a harness with two wires. .how do you hook up the the from the meter to where?
Thanks again
__________________

__________________
acepi is offline   Reply With Quote
Old 23-07-2015, 10:02   #17
Senior Cruiser
 
S/V Antares's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: Annapolis, Bahamas
Boat: 1983 Gulfstar 36
Posts: 1,249
Images: 1
Re: Perkins temperature gauge u/s

On a single terminal connect the Ohm meter the terminal and body of the sensor and as you heat the sensor the value will change


If you have a floating ground sensor with two terminals hook the meter to each terminal and heat it up.


If I remember correctly the value is lowest when cold and gets higher with temp. A bad sensor will simply give no reading (Open) .
__________________

__________________
Will & Muffin
Lucy the dog

"Yes, well.. perhaps some more wine" (Julia Child)
S/V Antares is offline   Reply With Quote
Old 23-07-2015, 10:15   #18
Registered User
 
leftbrainstuff's Avatar

Join Date: May 2011
Location: San Francisco and Australia
Boat: Liberty 458
Posts: 1,979
Re: Perkins temperature gauge u/s

Quote:
Originally Posted by acepi View Post
Thanks for all the help sofar just found out that I have been waisti get my time. What I thought was the temp gauge sender is in fact the sensor for the alarm. One person mentioned on another forum. It is supposed to be on the side of the engine. Any Perkins expert that would agree with that. Cannot find any manual on this
There is no standard arrangement for a perkins diesel.

You need to follow the wiring.

Your gauge will have a sender unit which will vary its resistance with temperature. You can use a multimeter to measure either the voltage change (in place) or resistance (in a pot of heated water).

Your alarm will probably have a switch. This just turns on or off.

I always check them in situ. I only remove components when I've diagnosed the fault.

Sent from my SM-N900T using Cruisers Sailing Forum mobile app
__________________
leftbrainstuff is offline   Reply With Quote
Old 23-07-2015, 16:51   #19
Registered User

Join Date: Aug 2010
Location: sydney, australia
Boat: 38 roberts ketch
Posts: 1,021
Images: 3
Re: Perkins temperature gauge u/s

rig for testing electrics - length (up to 2m)of double insulated twin wire, alligator clips attached to each end of wires. To test sender in hot water - cooking or coffee thermometer to show water heat. clip test wire to wiring fitting of sensor and the other test wire to the body of the sensor, only immerse the body of the sender, attach other end of test wires to multimeter test prongs and set the meter to test resistance. As the heat rises the resistance should start changing. The temp sender can be tested in situ but you can't really test an alarm sender in situ unless you're prepared to overheat your engine.
__________________
charliehows is offline   Reply With Quote
Old 24-07-2015, 12:19   #20
Registered User

Join Date: Nov 2014
Location: Vancouver
Boat: Ontario32
Posts: 26
Re: Perkins temperature gauge u/s

Is there any person that can describe the procedure to check the sensor in hot water with a ohm meter? Much appreciated
__________________
acepi is offline   Reply With Quote
Old 24-07-2015, 12:47   #21
Registered User

Join Date: Aug 2012
Location: Cruising the Gulf of Mexico.
Boat: 1980 Morgan 415
Posts: 1,439
Re: Perkins temperature gauge u/s

Temp alarm for water usually set to trip +-10 below boiling. Try a coffee kettle. Immerse sensor in water. Fresh water won't hurt it.


------------------------------
Looking for another pretty place to work on the boat.
__________________
Working on spending my children's inheritance.
Cap Erict3 is offline   Reply With Quote
Old 24-07-2015, 13:56   #22
Registered User

Join Date: Nov 2014
Location: Vancouver
Boat: Ontario32
Posts: 26
Re: Perkins temperature gauge u/s

Thanks for the reply. It's not the alarm I am testing. Just the temperature indicator. Tested the gauge and it seems to work. But if I do the test from the sensor wire at the sensor disconnected and ground the the wire, my gauge does not do anything .so that would indicate false wire or faulty gauge? Driving me around the bend
__________________
acepi is offline   Reply With Quote
Old 24-07-2015, 14:12   #23
Registered User

Join Date: Aug 2012
Location: Cruising the Gulf of Mexico.
Boat: 1980 Morgan 415
Posts: 1,439
Re: Perkins temperature gauge u/s

Click image for larger version

Name:	ImageUploadedByCruisers Sailing Forum1437768675.116965.jpg
Views:	58
Size:	91.4 KB
ID:	105933

Temp sensor will look kinda like this. One wire.


------------------------------
Looking for another pretty place to work on the boat.
__________________
Working on spending my children's inheritance.
Cap Erict3 is offline   Reply With Quote
Old 24-07-2015, 19:30   #24
Registered User

Join Date: Aug 2010
Location: sydney, australia
Boat: 38 roberts ketch
Posts: 1,021
Images: 3
Re: Perkins temperature gauge u/s

Quote:
Originally Posted by acepi View Post
Thanks for the reply. It's not the alarm I am testing. Just the temperature indicator. Tested the gauge and it seems to work. But if I do the test from the sensor wire at the sensor disconnected and ground the the wire, my gauge does not do anything .so that would indicate false wire or faulty gauge? Driving me around the bend
4 things to test; 1; sender unit, 2; gauge, 3; fuse, 4; wiring/connections
sounds like you've got 2 or 3 of them with a problem. Or 4 if the gauge only 'seems' to be working.
Are you using a multimeter?
grounding the sensor wire should produce a high temp reading if the gauge is working and the ignition is on. So you could have a bad connection or wire, which means there might be nothing wrong with sensor.
__________________
charliehows is offline   Reply With Quote
Old 24-07-2015, 20:01   #25
Registered User

Join Date: Nov 2014
Location: Vancouver
Boat: Ontario32
Posts: 26
Re: Perkins temperature gauge u/s

Went to the boat again today. Here is the million dollar question, which could solve my problem. With a ohm meter connected to the top connector with the red lead, and the black one to the bottom of the sensor, should I not get some kind of reading. In my case none? So is it the sensor?
__________________
acepi is offline   Reply With Quote
Old 24-07-2015, 21:52   #26
Registered User

Join Date: Aug 2010
Location: sydney, australia
Boat: 38 roberts ketch
Posts: 1,021
Images: 3
Re: Perkins temperature gauge u/s

yep, because an ohm meter measures resistance you should get 'some kind of reading'. If you get no reading at all a; your ohm meter doesnt work or b; its not switched on. Whether your sensor works or not remains a matter of speculation.
__________________
charliehows is offline   Reply With Quote
Old 24-07-2015, 22:14   #27
Registered User
 
four winds's Avatar

Join Date: Oct 2010
Location: Wandering the US Gulf Coast
Boat: 78 Pearson323 Four Winds
Posts: 2,138
Re: Perkins temperature gauge u/s

The sender must be disconnected from the factory circuit to do an ohms test.

If still installed on the engine, removing the wire from the sender first will insure the meter is reading the sender and not the wiring harness. Which could read like an open circuit with the main switch off.
__________________
Life begins at the waters edge.
four winds is offline   Reply With Quote
Old 26-07-2015, 11:36   #28
Registered User

Join Date: Nov 2014
Location: Vancouver
Boat: Ontario32
Posts: 26
Re: Perkins temperature gauge u/s

Correct me if I am wrong. Took the sensor out, with the ohm meter turned on, aha, put the black wire to the bottom of the switch, and the red probe to the top.nothing but a one on the ohm meter. Than I boiled some water, did the same reading and nothing. My question is , did I do this right, and as anyone doing the same test had different results.
__________________
acepi is offline   Reply With Quote
Old 26-07-2015, 13:28   #29
Registered User

Join Date: Aug 2012
Location: Cruising the Gulf of Mexico.
Boat: 1980 Morgan 415
Posts: 1,439
Re: Perkins temperature gauge u/s

Click image for larger version

Name:	ImageUploadedByCruisers Sailing Forum1437938561.219897.jpg
Views:	47
Size:	62.8 KB
ID:	106032

The pic is for different sensor values through their range. The "1" you are seeing might be an indication that the reading is beyond your set scale.

I connect with an alligator clip on my probe to insure a good connection.

Was your initial problem a low, high or no change on your temp gauge?


------------------------------
Looking for another pretty place to work on the boat.
__________________
Working on spending my children's inheritance.
Cap Erict3 is offline   Reply With Quote
Old 26-07-2015, 13:37   #30
Registered User

Join Date: Nov 2014
Location: Vancouver
Boat: Ontario32
Posts: 26
Re: Perkins temperature gauge u/s

The problem is no indication on the temp gauge. I tried all different setting and no luck. Tested the gauge and it seems to be ok.
__________________

__________________
acepi is offline   Reply With Quote
Reply

Tags
perkins

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Faria temperature gauge problems Jetexas Engines and Propulsion Systems 6 30-10-2015 06:18
faria temperature gauge failure. jpgriffin Our Community 3 12-04-2015 10:24
Westerbeke 7.8 kW gen set water temperature gauge callistov42 Electrical: Batteries, Generators & Solar 3 16-10-2013 07:03
Yanmar 2qm20 Temperature Gauge charliehows Engines and Propulsion Systems 0 22-11-2011 22:58
Installing Temperature Gauge for Yanmar 4JH4E Charlie Engines and Propulsion Systems 8 12-03-2010 11:06



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 01:49.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.