SCIENTIFIC INSTRUMENTS SCM10 Manual

Single channel temperature monitor

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Scientific Instruments, Inc.

Printing History

Rev A

Certification

Scientific Instruments, Inc. (SII) certifies that

this product met its published specifications

at the time of shipment. SII further certifies

that its calibration measurements are

traceable to the United States National

Institute of Standards and Technology (NIST).

Warranty

This product is warranted against defects in

materials and workmanship for a period of

one year from date of shipment. During this

period SII will, at its option, either repair or

replace products which prove to be defective.

For products returned to SII for warranty

service, the Buyer shall prepay shipping

charges and SII shall pay shipping charges

to return the product to the Buyer.

However, the Buyer shall pay all shipping

charges, duties, and taxes for products

returned to SII from another country.

Warranty Service

For warranty service or repair, this product

must be returned to a service facility

designated by SII.

Limitation of Warranty

The foregoing warranty shall not apply to

defects resulting from improper or inadequate

maintenance by the Buyer, Buyer supplied

products or interfacing, unauthorized

modification or misuse, operation outside

of the environmental specifications for the

product, or improper site preparation or

maintenance.

090-267 Rev A

Scientific Instruments, Inc.

The design and implementation of any circuit

on this product is the sole responsibility of

the Buyer. SII does not warrant the Buyer's

circuitry or malfunctions of this product that

result from the Buyer's circuitry.

In addition SII does not warrant any damage

that occurs as a result of the Buyer's circuit

or any defects that result from Buyer-supplied

products.

Notice

The information contained in this document

is subject to change without notice.

SII makes no warranty of any kind with regard

to this material, including, but not limited to,

the implied warranties of merchantability and

fitness for a particular purpose.

SII shall not be liable for errors contained

herein or for incidental or consequential

damages in connection with the furnishing,

performance, or use of this material. No

part of this document may be photocopied,

reproduced, electronically transferred, or

translated to another language without

prior written consent.

Trademark Acknowledgement

All product and company names are

trademarks or trade names of their respective

companies.

Safety

The Model SCM10 does not contain any user

serviceable parts. Do not open the enclosure.

Do not install substitute parts

or perform any unauthorized modification

to the product. For service or repair,

return the product to SII or an authorized

service center.

Model SCM10

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Summary of Contents for SCIENTIFIC INSTRUMENTS SCM10

Page 1 SII. Safety The Model SCM10 does not contain any user Limitation of Warranty serviceable parts. Do not open the enclosure. The foregoing warranty shall not apply to Do not install substitute parts...
Page 2: Table Of Contents
Scientific Instruments, Inc. Model SCM10 TABLE OF CONTENTS Introduction ....................5 Product Description .................5 Product Specifications ................6 Input Specifications ................6 Analog Output Specifications ............7 Front Panel..................7 Relays and Alarms ................7 Interface ...................8 Input Power Specifications ...............8 General ....................8 Power Supply Specifications ............8 Safety Summary ..................8...
Page 3 Scientific Instruments, Inc. Model SCM10 Graphical User Interface (GUI) ..............33 Installation .....................33 Operation....................33 Starting GUI for the first time............33 Status Page..................34 Alarm and Relay LED status Indicators ........34 Data Logging................34 Configuration Page ................35 Selecting Sensor Type ............36 Setting the Alarms ..............36 Settings the Relays ..............37...
Page 4 Scientific Instruments, Inc. Model SCM10 090-267 Rev A...
Page 5: Introduction
With a serial, Ethernet, and convenient graphical user interface, as well as an ASCII command set and LabVIEW™ drivers, the SCM10 can be used as a stand-alone temperature monitor or can be easily integrated into other systems.
Page 6: Product Specifications
Scientific Instruments, Inc. Model SCM10 PRODUCT SPECIFICATIONS Input Specifications • Number of Inputs: 1 • Measurement Type: 4-leaded differential • Excitation Current: Constant Current (10µA or 1mA) • Isolation: Measurement not isolated from chassis ground • A/D Resolution: 24 bit •...
Page 7: Analog Output Specifications
Scientific Instruments, Inc. Model SCM10 Analog Output Specifications • Isolation: Output not isolated from chassis ground • Update Rate: 2 rdg/s Voltage Current Range: 0-10 V 4-20mA Resolution: 0.15 mV 0.3 μA Accuracy: ±1.25 mV ±2.5 μA Min. Load 500 Ω...
Page 8: Interface
Scientific Instruments assumes no liability for customer failure to comply with these requirements. The SCM10 has been designed and tested to protect the user from electric shock, burn, mechanical hazards and spread of fire from the instrument, under normal working conditions.
Page 9: Related Safety Symbols
Scientific Instruments, Inc. Model SCM10 The power supply included with the SCM10 meets or exceeds the European Union standard, EN-60950-1. Scientific Instruments assumes no liability for damage caused by controlling or switching any safety equipment or high integrity equipment with the SCM10’s relays and alarms.
Page 10: Instrument Summary
5. DC Adapter REAR PANEL DEFINITION This section describes the connections on the rear panel of the SCM10. It contains references to the sections that describe these connector pin outs in detail. Figure 2.1 shows the rear panel of the SCM10.
Page 11: Input Power Connector
Power is supplied to the SCM10 through the coaxial connector. There is no power switch on the instrument. Hence, the SCM10 is turned ON simply by plugging in the power cable from the wall wart or power source. The SCM10 requires regulated 9-24VDC @ 300mA.
Page 12: Serial Connector
The SCM10 is a DCE (Data Communications Equipment) device for RS232 communication. Most PCs are DTE type. Hence, a straight DB9 cable is recommended for setting up an RS232 connection from the SCM10 to the PC. ETHERNET CONNECTOR Pin #...
Page 13: Sensor Input
When the voltage type output is selected, the range of the output is from 0-10V with a resolution of 0.15mV. The output impedance of the analog output (voltage type) is 500 Ohms and this protects the SCM10 circuitry from damage due to a short between the analog output leads.
Page 14: Alarms And Relays
ALARMS AND RELAYS Alarms: The SCM10 has 2 programmable Alarms that can be used to flag Low or High Temperature conditions. Each of the alarms has its own set point. The alarm set point is entered in Kelvin. If the Alarm is set to be a High Alarm, then the Alarm turns ON when the temperature measured by SCM10 is greater than or equal to the set point.
Page 15: Front Panel Operation
3. FRONT PANEL OPERATION INSTRUMENT POWER UP The SCM10 is turned ON simply by plugging in the power supply. When the instrument is powered ON, it will display “” and after a brief amount of time, the front panel will begin displaying the temperature reading along with the corresponding units.
Page 16: Keypad Operation
Model SCM10 KEYPAD OPERATION The SCM10 has 4 keys - Menu , ▲(Up Arrow), ▼ (Down Arrow) and Enter . When the SCM10 is displaying sensor data, ▲and ▼ keys are used to toggle through the various display units. When in this mode, Enter is pressed in order to turn off any latched alarms.
Page 17 Scientific Instruments, Inc. Model SCM10 Top Menu Description Sub Menu Description “ALA 2” Alarm 2 Settings Alarm Disable/  /  Enable   /  High/Low Alarm Alarm Setpoint xxx.xx Latching/  /  Non Latching  xx.x Deadband Limit “rLy 1”...
Page 18: Input Setup
Press ▲or▼ keys until the desired sensor name appears on the display. Press Enter again to activate this. The SCM10 has 9 standard curves loaded from factory and space for one user curve. The user curve can have a maximum of 200 points and can be loaded through the Utility Software.
Page 19: Alarm Setup
Scientific Instruments, Inc. Model SCM10 ALARM SETUP The SCM10 has 2 programmable alarms each of which can be set to High/Low and can be Latching/Non-latching type. To access the Alarm settings, press Menu and press ▲or▼ keys until the word “...
Page 20: Relay Setup
OFF. “ ” is similar to where Relay 2 follows the status of Alarm 2. ANALOG OUTPUT SETUP The SCM10 has 2 types of Analog Output - Voltage and Current. The analog output functions as a temperature indicator in itself since it displays a voltage or current signal proportional to the temperature or sensor data.
Page 21: System Settings
Press Enter to save the change or press Menu to get out of the edit mode without saving changes. Below are the various system settings for SCM10: • Temperature Filter: “ xx” represents the temperature filter setting. When the filter is set to 10 (the highest filter setting), there is maximum noise filtering performed on the temperature data.
Page 22: Network Settings
Scientific Instruments, Inc. Model SCM10 NETWORK SETTINGS This menu option lets the user assign an IP address for the unit for TCP/IP communication. To access the Network settings, press Menu and press ▲or▼ keys until the word “” appears on the display. Press Enter to select this option. This displays the Network settings submenu.
Page 23: Remote Interface
When connecting the SCM10 to a hub or switch, a standard ‘patch’ cable or straight through cable is used. This will connect the instrument’s transmit lines to the hub’s receive lines.
Page 24 PC and SCM10. When a connection is made with the SCM10, a web browser window may be opened and SCM10’s IP address may be typed in the address bar to view the SCM10’s Webpage which looks like Figure 4.1 below.
Page 25: Serial Rs232 Physical Connection
LAN with each power up. TCP Data Socket Configuration In order to communicate with the SCM10 using the same ASCII command set as the RS232 serial port, a TCP data socket application must be configured in the PC using remote port 9760.
Page 26: Serial Rs232 Connector - Hardware Support & Data Format
57600 and 115200. The desired baud rate may be selected through the instrument front panel interface (refer to Analog Output Setup on page 20). The SCM10 uses a 3-wire serial communication link – transmit data, receive data and signal ground. Hence there is no hardware flow control associated with the link.
Page 27: Ascii Command Summary
Scientific Instruments, Inc. Model SCM10 In response to the query string, a response string is generated by the SCM10 and sent to the PC. The format for the response string, in general, is as follows: <Response string><space><data><comma><data>…<terminators>. SCM10 sends a carriage return (‘\r’) for a response string terminator through the serial port and sends a carriage return (‘\r’) followed by a line feed (‘\n’) for the...
Page 28 Scientific Instruments, Inc. Model SCM10 DETAILED MESSAGE SYNTAX *IDN Instrument Identification Query Query String: *IDN?<terminator> Response String: Scientific Instruments, SCM10,xxx, y.yy<terminator> xxx = Serial Number of Instrument y.yy = Firmware version Current Temperature Reading Query Query String: T?<terminator> Response String: T xxx.xxx<terminator>...
Page 29 Scientific Instruments, Inc. Model SCM10 Basic Alarm Settings Query & Command Query String: ALA? x<terminator> Response String: ALA x,y,z,w<terminator> Command String: ALA x,y,z,w<terminator> x = Alarm Number (1 or 2) y = Disabled (0)/Enabled (1) z = Low Alarm (0)/High Alarm (1)
Page 30 6 = Pt1000 7 = RO600 8 = RO105 9 = CTI 10 = User Curves 1 through 9 are standard curves and come with the SCM10 from the factory. SHDR Sensor Curve Header Query & Command Query String: SHDR? x<terminator>...
Page 31 Scientific Instruments, Inc. Model SCM10 CDAT Sensor Data point Query & Command Query String: CDAT? x,y<terminator> Response String: CDAT x,y,zzz.zz,w.ww <terminator> Command String: CDAT x,y,zzz.zz,w.ww <terminator> x = Sensor Curve Number (1-10). See SSEL command for list of curves. y = Data point Number/Row Number of curve data ( 1-200) zzz.zz = Temperature data in Kelvin (0-9999.99)
Page 32 Scientific Instruments, Inc. Model SCM10 FDEF Factory Default calibration setting Command Command String: FDEF<terminator> Remarks: Restores all calibration values to the custom factory defaults. Please note that these factory default calibration values are not constant and they have been derived by calibrating the individual unit at our calibration setup.
Page 33: Graphical User Interface (Gui)
If it does not start automatically, go to Start > Run > and type the name of your CD ROM Drive, followed by setup.exe. (For example: D:\setup. exe) Follow the prompts to install the SCM10 GUI to its default directory, or choose a custom directory for installation.
Page 34: Status Page
Status Page The Status Page (see Figure 5.2) is your home base for interacting with the SCM10. From here, you can monitor your system via the real-time strip chart, read temperature or sensor data directly, observe alarm and relay status, enable/ disable data logging, see your activated sensor type, and check the instrument’s...
Page 35: Configuration Page
GUI display to show all the instrument parameters that are user-configurable. When entering the Configuration Page, values are initialized to those currently stored in the SCM10. Note: Any changes that you make will not take effect until you click the “Update” button for the respective parameter. A warning icon above the button will appear to indicate that a change has been made but not yet applied.
Page 36: Selecting Sensor Type
From the Select Sensor Type dropdown menu, you can choose to activate the appropriate curve for your sensor. Take care to select the right sensor type, otherwise the SCM10 will not display the proper temperature data, or may display an out-of-range error. Click the update button adjacent to the sensor type selector to update the SCM10.
Page 37: Settings The Relays
Adjusting the Analog Output The GUI provides a direct means to set the SCM10’s analog output mode (voltage or current), scaling (helpful for logarithmic RTDs), and its zero and span values. Remember to click the update button to pass any new settings to the SCM10.
Page 38: Curve Handler: Downloading A Calibration Curve
If you acquire a calibrated sensor, the Curve Handler page provides a unique and simple interface for downloading the calibration curve to the user memory block in the SCM10. The Curve Handler can accept most major curve formats utilized in the industry and will attempt to parse header information and prepare it for download.
Page 39: Preparing A Curve For Download
“Install New Curve Data.” The GUI will proceed to install the header and then each data point sequentially. Do not disconnect or turn off the SCM10 or attempt to exit the GUI while downloading curve data! Doing so will result in incomplete or corrupted curve data in the SCM10.
Page 40: Hardware Calibration
ADC, and DAC outputs (both current and voltage). While a calibration interface is provided in this GUI with prompted instructions, it is not recommended for the end user to perform calibration tasks. Your SCM10 has been designed and calibrated to exacting specifications by trained and qualified technical experts at the factory and re-calibration is rarely necessary.
Page 41: Service
Scientific Instruments, Inc. Model SCM10 6. SERVICE This chapter provides basic service information on the SCM10 Single channel temperature monitor. Please note that these are only guidelines for troubleshooting or calibration and in case of any persistent problems, the instrument should be sent to the factory for repair or recalibration.
Page 42: Troubleshooting
The first message is related to a hardware problem and if it doesn’t go away with a reset to the SCM10, then the instrument should be sent to the factory for repair. The remaining messages are all related to sensor input status and will typically go away by connecting sensor leads properly or by choosing the correct curve.
Page 43 Model SCM10 Getting Ready for Calibration 1. Make sure that the SCM10 sensor input is connected to a resistance load around 1kΩ and the analog output (Analog output set to Current type) is connected to a load of 100Ω to 500Ω. Let the instrument warm up for at least one hour.
Page 44: Sensor Input Calibration
The sensor input calibration consists of 2 parts: Current Source calibration and the ADC Calibration. Current Source Calibration The SCM10 provides a constant current of 10µA or 1mA to excite the sensor for measurement. The 10µA and 1mA sources need to be individually calibrated to be within specified tolerances.
Page 45: Adc Offset & Gain Calibration
DMM should be 0.99998 ± 0.0001V. ADC Offset & Gain Calibration The SCM10’s voltage measurement circuitry should be calibrated for the appropriate offset and gain in order to meet the performance specifications. There are 2 internal gains – gain of 1 and a gain of 10, both of which should be calibrated individually for optimum performance.
Page 46 Calibration Confirmation message 7. Next, set the voltage standard to 5V ± 0.00001V and let the SCM10 readings settle down for a minute. After this, click the “1 X Span” button. This displays an instruction window. Click “Continue” to go to the next screen.
Page 47: Analog Output Calibration
Scientific Instruments, Inc. Model SCM10 7. Next, set the voltage standard to 0.5V and let the SCM10 reading settle for a minute. After this, click the “10 X Span” button. This displays an instruction window. Click “Continue” to go to the next screen.
Page 48: Analog Output Voltage Mode Calibration
Scientific Instruments, Inc. Model SCM10 Analog Output Voltage Mode Calibration 1. Connect the analog output leads (+ and -) from the DB15 connector to the voltage measuring inputs of the DMM. 2. Click on the “Analog Output Voltage” button of the GUI Calibration window.

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