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Post by Lake Shore Jeff M on Feb 27, 2018 7:38:25 GMT -5
Jeff,
The 32AWG Quad Twist Phosphor Bronze wire is suitable to be soldered to the connector you are using. The soldering technique will be similar to attaching the leads to the sensor which is described in our Cernox™ Sensor Installation Instructions at:
www.lakeshore.com/Documents/F017-00-00.pdf
Let me know if you have additional questions.
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Post by Lake Shore Jeff M on Feb 22, 2018 7:51:15 GMT -5
Lake Shore does not offer a multi channel Temperature Monitor that has more than the two Analog Outputs as found on the Model 218 Monitor.
Have you considered using our free Chart Recorder Software Application? This application can log temperature data for all 8 channels of the Model 218 and write the data into a Microsoft Excel file. You can find additional information and/or install the Chart Recorder application from the following link"
www.lakeshore.com/products/pages/chartrecorder.aspx
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Post by Lake Shore Jeff M on Feb 12, 2018 12:11:10 GMT -5
msrajpoot,
I think I understand what you are saying, however, to make sure I understand correctly here are my assumptions:
It sounds like you are getting back four bytes from each sensor reading. I’m assuming that the PIB is a single byte. The Siemens software needs to be setup to accept that in as a single, four-byte value that is then interoperated as a floating point value. That should start to give you good floating point readings.
Next, you should use MeasureLINK to setup what data you are sending back to the PLC and this is where you can choose to send the temperature reading (K or C) instead of a sensor reading (ohms). I think your biggest issue is bringing those four bytes in as one word and converting it to a floating point number.
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Post by Lake Shore Jeff M on Feb 5, 2018 8:28:08 GMT -5
Hello msrajpoot,
Regretfully, it sounds like your Model 240-2P has a defective USB Interface device on the circuit board and will need to be repaired or replaced. Please send the following information to service@lakeshore.com:
Your full given name Name of the company or educational institute you represent Address of the above including: Street, City State or region Postal Code Country of not the US Your contact telephone number
Once we receive your information, we will determine the warranty status and let you know how we will proceed with the resolution.
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Post by Lake Shore Jeff M on Jan 30, 2018 10:04:30 GMT -5
Hello Josb,
I am not familiar with the capabilities of the raspberry pi, however, to control a Model 370 requires that it be able to send and receive commands and responses over one of the two communications interfaces provided on the instrument. The Model 370 is equipped with one RS232 Serial Communications Port and one IEEE-488 GPIB port. The raspberry pi would need to be able to support either of the physical interfaces and have the ability to send and receive ASCII characters via those ports. In addition if you want to run any of the software supplied by Lake Shore and/or National Instruments Labview, you would need to be able to emulate a windows operating system.
You can review Chapter 6 in the Model 370 User Manual for specifications regarding the two interfaces and the specific commands that can be used with the instrument.
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Post by Lake Shore Jeff M on Jan 28, 2018 20:58:20 GMT -5
Hello meh,
The FIELD? command returns the value of the channel that was last specified by the CHNL command. There are a few commands that report the results of the channel that is specified using the CHNL command. The FIELDM? command is one of those. When you send the ALLF? command, you would need to send CHNL X; FIELDM? to see what multiplier is used with channel X. Repeat the CHNL & FIELDM? command with Y, Z & V to get the Y, Z and Vector channel. Other commands that are channel specific are the RANGE and UNIT commands.
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Post by Lake Shore Jeff M on Jan 25, 2018 11:06:37 GMT -5
Hello Je,
The CAT 7 cable should work very well for the application you have described.
In regards to which shields to connect, we suggest that you at a minimum connect the outer shield to either of the input connectors. In addition, if you want to also connect the individual pair shields, you can do that to each input. On the 6-pin input mating connector both pins 3 & 6 connect to the Model 336 ground plane so that should allow sufficient terminations for those connections, however, you will need to double up at least one of the terminations on either pin 3 or 6.
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Post by Lake Shore Jeff M on Jan 5, 2018 14:27:02 GMT -5
Hello Jeff,
The Model 218 User manual has detailed information regarding the wiring and operational setup for the monitor. The manual can be downloaded at www.lakeshore.com/Documents/218_Manual.pdf
There are several configuration settings that need to be entered to tell the monitor you are using a Platinum Sensor connected to a specific input and how you want the information displayed. Finally, you will need to connect the sensor using a 4-wire connection method.
Our service department will be more than happy to talk you through the setup if you give us a call at 614-891-2243 and select option 2 for service.
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Post by Lake Shore Jeff M on Jan 3, 2018 8:21:57 GMT -5
Yes, over the years customers have written their applications in everything from Quick Basic to C++ programming languages. However, since writing your own application may require the purchase of additional programming software and possible consulting fees, you may be better off looking at upgrading your Model 330 to one of our current models like the Model 335, which will allow you use our free Chart Recorder application to record the time versus temperature of the inputs in real time.
Regards, Jeff
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Post by Lake Shore Jeff M on Jan 2, 2018 8:17:03 GMT -5
Hello Homesteadjoe,
Lake Shore does not offer any software programs that allow you to capture the time and temperature data for sensors connected to the obsolete Model 330 temperature Controller.
Chapter 4 of the Model 330 User Manual describes the RS232 and IEEE488 Interfaces and provides a list of commands that can be used with the instrument. If you are familiar with programming, you can use any programming language that allows you to send the ASCII commands to the interface and then read the response. If you have any specific questions regarding the commands available in the Model 330, please let me know.
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Post by Lake Shore Jeff M on Nov 27, 2017 8:17:38 GMT -5
In the Model 325, the correct sensor type selection for a Cernox Sensor is NTC-RTD. Since you cannot see your curve when you use that selection, I expect that you did not create the curve in the correct format. Curves for NTC-RTD sensors must be in the Log Ohms versus Temperature in Kelvin format. If you entered the curve in resistance versus temperature format, the instrument will not allow you to select the curve. To resolve the issue, make sure to select the Log Ohms versus Temperature format in Curve Handler and then convert your resistance values to Log Ohms Base 10. Once you have the conversion, enter the curve points starting at the highest temperature to the lowest.
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Post by Lake Shore Jeff M on Oct 27, 2017 6:14:07 GMT -5
Have you tried to uninstall and reinstall the MeasureLINK Application? Communicating with the Model 240 using Tera Term confirms that the USB Port is operating correctly so the issue seems to be between the MeasureLINK application and the Model 240. Also, please confirm what COM Port you have assigned as I see two different ports in the screen shots you have provided.
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Post by Lake Shore Jeff M on Oct 23, 2017 11:58:35 GMT -5
Actually, you do not need to send the email as I have added the Tera Term document to this post. I suggested Tera Term as it is a free program that you can download and install.
If you need a Hyper Terminal document, please let me know.
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Post by Lake Shore Jeff M on Oct 23, 2017 11:52:30 GMT -5
Thank you for sending the screen shot showing the error. I will assume that clicking on the connect button will not reconnect MeasureLINK to the Model 240. If that is the case, I would like for you to try connecting to the Model 240 using an external Terminal Emulation program like Hyper Terminal or Tera Term. If you can send an email to service@lakeshore.com, I can send you the configuration information for Tera Term or Hyper Term if you can use either of these programs.
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Post by Lake Shore Jeff M on Oct 18, 2017 7:36:00 GMT -5
Thanks for the verification and error message. Can you send a screen shot of the error to me at service@lakeshore.com so I can show my engineering team what you are seeing?
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