SCIENTIFIC INSTRUMENTS SCM10 User manual

Scientic Instruments, Inc. Model SCM10
1
090-267 Rev A
Copyright 2012
Scientic Instruments, Inc.
All Rights Reserved.
Printing History
Rev A
Certication
Scientic Instruments, Inc. (SII) certies that
this product met its published specications
at the time of shipment. SII further certies
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
modication or misuse, operation outside
of the environmental specications for the
product, or improper site preparation or
maintenance.
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
tness 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 modication
to the product. For service or repair,
return the product to SII or an authorized
service center.

Scientic Instruments, Inc. Model SCM10
2090-267 Rev A
TABLE OF CONTENTS
Introduction ...................................................................................................5
Product Description .................................................................................5
Product Specications .............................................................................6
Input Specications ..........................................................................6
Analog Output Specications ...........................................................7
Front Panel.......................................................................................7
Relays and Alarms ...........................................................................7
Interface ...........................................................................................8
Input Power Specications ...............................................................8
General ............................................................................................8
Power Supply Specications ............................................................8
Safety Summary ......................................................................................8
Related Safety Symbols ..........................................................................9
Absolute Maximum Ratings.....................................................................9
Instrument Summary..................................................................................10
General..................................................................................................10
Inspection and Unpacking .....................................................................10
Rear Panel Denition ............................................................................10
Input Power Connector.......................................................................... 11
I/O Connector ........................................................................................ 11
Serial Connector....................................................................................12
Ethernet Connector ...............................................................................12
Sensor Input ..........................................................................................13
Analog Output .......................................................................................13
Alarms and Relays ................................................................................14
Front Panel Operation ................................................................................15
Instrument Power up .............................................................................15
Display Denition...................................................................................15
Display Units & Alarm Annunciators ......................................................15
Keypad Operation .................................................................................16
Instrument Reset ...................................................................................16
Menu Structure ......................................................................................16
Input Setup ............................................................................................18
Alarm Setup...........................................................................................19
Relay Setup ...........................................................................................20
Analog Output Setup .............................................................................20
System Settings ....................................................................................21
Network Settings ...................................................................................22
Remote Interface ........................................................................................23
General..................................................................................................23
Ethernet Connection..............................................................................23
Ethernet Conguration ..........................................................................23
Serial RS232 Physical Connection........................................................25
Serial RS232 Connector – Hardware Support & Data Format ..............26
ASCII Message String Format...............................................................26
ASCII Command Summary ...................................................................27

Scientic Instruments, Inc. Model SCM10
3
090-267 Rev A
Graphical User Interface (GUI) ..................................................................33
Installation .............................................................................................33
Operation...............................................................................................33
Starting GUI for the rst time..........................................................33
Status Page....................................................................................34
Alarm and Relay LED status Indicators ..................................34
Data Logging...........................................................................34
Conguration Page ........................................................................35
Selecting Sensor Type ............................................................36
Setting the Alarms ...................................................................36
Settings the Relays .................................................................37
Adjusting the Analog Output ...................................................37
Changing Display Filter ...........................................................37
Switching Communication Modes ...........................................37
Curve Handler: Downloading a calibration curve ...........................38
Curve Header and Data Format..............................................38
Preparing a curve for download ..............................................39
Downloading the curve ...........................................................39
Hardware Calibration .....................................................................40
Service .........................................................................................................41
Troubleshooting .....................................................................................42
Instrument Calibration ...........................................................................42
Sensor input Calibration .................................................................44
Current Source Calibration .....................................................44
ADC Offset & Gain Calibration ................................................45
Analog Output Calibration ..............................................................47
Analog Output Current Mode Calibration ................................47
Analog Output Voltage Mode Calibration ................................48

Scientic Instruments, Inc. Model SCM10
4090-267 Rev A

Scientic Instruments, Inc. Model SCM10
5
090-267 Rev A
1. INTRODUCTION
PRODUCT DESCRIPTION
The SCM10 single channel monitor provides the accuracy, resolution and
interface features of a bench top temperature monitor in an easy to use,
compact and easily integrated instrument. With appropriate sensors, the SCM10
measures temperature from 1.4K to 800K and in difcult sensing conditions,
including high vacuum and magnetic elds. SCM10 has two programmable
alarms, two relays and a user congurable analog voltage or current output.
Serial interface and Ethernet interface are provided for remote operation.
A PC-compatible utility software is provided with the SCM10. This graphical user
interface provides an easy way to set all instrument parameters and evaluate
the performance of the instrument. The SCM10 also has an embedded web
server that can be used to connect to the instrument from anywhere within the
LAN using an internet browser. The instrument web page shows the current
temperature reading and shows the status of all alarms and relays.
The SCM10 Temperature Monitor supports diode and RTD sensors. The
instrument can be congured for the appropriate sensor type using the
front panel or the utility software. Two convenient sensor excitation currents
are provided to choose from. The SCM10 provides a 4 –leaded differential
measurement for accurate temperature measurements. Measurements are
available in temperature units K, ˚C or ˚F , or sensor units V or Ω.
The SCM10 has 9 standard sensor curves that are programmed into the
instrument from the factory. It also provides room for one 200 point user curve,
which may be loaded into the instrument using the utility software.
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.

Scientic Instruments, Inc. Model SCM10
6090-267 Rev A
PRODUCT SPECIFICATIONS
Input Specications
• 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
• Input Accuracy: Sensor Dependent
• Measurement Resolution: Sensor Dependent
• Measurement Rate: 5 rdgs/s
• Supported Sensors:
Diodes Silicon, Gallium Arsenide (25K & above)
RTDs RuO 1kΩ, RuO 100kΩ, Pt 100Ω, Pt 1000Ω, Cernox™, Carbon-Glass
(4K & above)
• Standard Curves: Si410, Si430, DT470, DT670, CTI, Pt100, Pt1000,
RO600, RO105
• User Curve: One user curve in non-volatile memory (up to 200 points)
• Settings: Sensor Type, Sensor Curve
• Input Connector: DB15
Sensor Performance Specications
Sensor Type Silicon Diode Ruthenium Oxide Platinum
Model Number Si410 RO105 Pt100
Temperature
Range
1 to 450K 2.0 to 273K 30 to 800K
Sensor Units Volts Ohms Ohms
Input Range 0 to 5V DC 0 to 500 kΩ 0 to 500 Ω
Sensor
Excitation
10µA 10µA 1mA
Electronic
Resolution
10µV 1 Ohm 1 mOhm
Sensor
Sensitivity
-36.36mV/K at 4K
-1.701mV/K at 77K
-2.293mV/K at 300K
12.652kΩ/K at 4K
174.55Ω/K at 77K
19.52 Ω/K at 270K
0.231Ω/K at 36K
0.422Ω/K at 77K
0.386Ω/K at 300K
Electronic
Accuracy
Sensor Units:
±150uV ±60Ω ±0.05Ω
Temperature: ±3.7mK at 4K
±87mK at 77K
±66mK at 273K
±4.5mK at 4K
±0.31K at 77K
±2.8K at 273K
±0.21K at 36K
±0.12K at 77K
±0.13K at 273K

Scientic Instruments, Inc. Model SCM10
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090-267 Rev A
Analog Output Specications
• 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
Resistance
500 Ω
(short-circuit protected)
N/A
Compliance
Voltage
N/A 10 V
Load
Regulation
N/A ±0.02% rdg (0 to 500Ω)
• Settings: Scale Voltage or Current with Temperature, Sensor Units or
Natural Logarithm of Sensor Units
• Connector: DB15
Front Panel
• Display Type: 6 digit LED
• Display Units: K, °C, °F, V, Ω
• Display Update Rate: 2 rdg/s
• Temperature Display Resolution: 0.001° between 0-99.999°,
0.01° between 100-999.99°, 0.1° above 1000°
• Sensor Units Display Resolution: 100µV (for diode type), Sensor Dependent
(for RTD type)
• Keys: Menu , ▼(Down ),▲(Up), Enter
• Front Panel Features: Alarm LEDs, View & Edit Conguration,
Instrument Reset
Relays and Alarms
Alarms:
• Number: 2
• Settings: Enabled or Disabled, High or Low Setpoint, Deadband,
Latching or Non-Latching
• Actuators: Front Panel LEDs, Relays
Relays:
• Number: 2
• Contacts: Normally Open (NO), Normally Closed (NC) and Common (COM)
• Contact Rating: 24VDC @ 1A
• Settings: Manually ON, Manually OFF, Follow Alarms
• Connector: DB15

Scientic Instruments, Inc. Model SCM10
8090-267 Rev A
Interface
Serial Interface:
• Format: RS232
• Baud Rate: 9600, 19200, 57600, 115200
• Functionality: Graphical User Interface, LabVIEW™ Drivers (Version 8.0)
• Connector: DB9 (DCE)
Ethernet Interface:
• Format: 10 Base T
• Speed: 10 Mbps
• Functionality: Graphical User Interface, LabVIEW™ Drivers,
Embedded Web Server
• Connector: RJ-45
Input Power Specications
• Power Requirement: Regulated 9-24V DC @ 300mA
• Connector: Barrel Plug 5.5mm OD x 2.5 mm ID x 9.9 mm L, Center Positive
• Internal Fuse Specications: 1.5A, 250V, Fast Acting, 5 X 20mm
General
• Ambient Temperature Range: 15-35˚C at rated accuracy, 10-40˚C at
reduced accuracy
• Size: 96mm W X 48mm H X 166mm D (3.8 in x 1.9 in x 6.5 in)
• Mounting: Panel mount into 91mm W X 44mm H (3.6 in x 1.7 in) cutout
• Weight: 1 lb
• Approval: CE, RoHS compliant
Power Supply (#490-060)- supplied with the SCM10
• Input Power Requirements: 90-264VAC, 47-63Hz, 0.25A rms @ 120Vac,
0.15A rms@ 240Vac
• Output Voltage: +12V DC
• Output Power: 12W (1A)
SAFETY SUMMARY
Observe these general safety requirements with the instrument at all times.
Failure to comply with these precautions or with specic warnings elsewhere
in the manual violates safety standards of design, manufacture and intended
instrument use. Scientic 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 re from the instrument, under
normal working conditions. The SCM10 is designed for indoor use only. Improper
use of the instrument may pose a hazard to the operator and surrounding area.

Scientic Instruments, Inc. Model SCM10
9
090-267 Rev A
The power supply included with the SCM10 meets or exceeds the European
Union standard, EN-60950-1.
Scientic 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.
Do not operate the instrument in an explosive atmosphere. Operation of any
instrument in the presence of ammable gases and fumes that is not rated for
such use constitutes a safety hazard.
Do not install substitute parts in the SCM10 or perform any unauthorized
modication to the instrument. Return the instrument to Scientic Instruments
for service and repair to ensure that safety features are maintained.
RELATED SAFETY SYMBOLS
Direct Current (power line)
ABSOLUTE MAXIMUM RATINGS
The following table lists the absolute maximum ratings of the power input and
other analog input/output connections. This information is useful when selecting
the appropriate wiring conductor for these connections.
Input/Output Pin Maximum Voltage/Current Ratings
Sensor input (I+ to I-, E+ to E-) 6V, 1mA
Analog Output (with respect to COM) 11V, 20mA
Relay Pins (with respect to COM) 24VDC, 1A
Input Power 9-24VDC, 1A

Scientic Instruments, Inc. Model SCM10
10 090-267 Rev A
2. INSTRUMENT SUMMARY
GENERAL
This chapter describes the general installation instructions for the SCM10.
INSPECTION AND UNPACKING
Inspect shipping boxes for external damage before opening. Photograph any
box that has signicant damage before opening. If there is visible damage to
the contents of the container, please contact the shipping company and
Scientic Instruments immediately.
Items included with the SCM10 Temperature Monitor:
1. SCM10 Temperature Monitor
2. SCM10 Users Manual
3. SCM10 Utility Software CD
4. DB15 Mating Connector and Shell
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.
Figure 2.1

Scientic Instruments, Inc. Model SCM10
11
090-267 Rev A
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.
The wall wart that is supplied with the SCM10 provides 12VDC. However, any
other regulated voltage source (within the specication limits) may be used to
power the SCM10.
The dimensions for the barrel plug are as follows:
• 2.5mm I.D. x 5.5mm O.D. Female, Positive Center
I/O CONNECTOR
Pin # Signal Description Pin # Signal Description
1I+ 9I-
2E+ 10 E-
3Shield 11 Shield
4Analog Output + 12 Analog Output – (COM)
5Shield 13 Relay 1 NC
6Relay 1 Common 14 Relay 1 NO
7Relay 2 NC 15 Relay 2 COM
8Relay 2 NO
The DB15 Female connector on the rear panel is used for I/O signals. This
connector has the sensor input, analog output and relay output connections.
The pin out for this connector is shown in Figure 2.3.
Shielded cables are highly recommended for the I/O connections, since these
signals are very sensitive to radiated and conducted noise. In particular,
screened and shielded twisted pair cables are very effective as they have a
foil shield around each twisted pair as well as an overall braided metal sheath
around all the pairs, thereby shielding wires from external Electromagnetic
Interference and crosstalk between the wire pairs.
Figure 2.2
Figure 2.3
8 1
15 9

Scientic Instruments, Inc. Model SCM10
12 090-267 Rev A
It is also recommended to pair up the following wires as twisted pairs in order to
minimize noise pickup:
• I+ and I-
• E+ and E-
• Analog Output + and Analog Output –
SERIAL CONNECTOR
The pin-out of the DB9 connector for SCM10 is given below: (DCE)
Pin # Pin Description Pin # Pin Description
1No Connection 6No Connection
2Transmit data (Out) 7No Connection
3Receive Data (In) 8No Connection
4No Connection 9No Connection
5Ground
The DB9 connector on the rear panel is used for Serial communication (RS232).
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 # Pin Description Pin # Pin Description
1+ Transmit Data 5No Connection
2- Transmit Data 6- Receive Data
3+ Receive Data 7No Connection
4No Connection 8No Connection
Figure 2.4
15
9 6

Scientic Instruments, Inc. Model SCM10
13
090-267 Rev A
The RJ45 connector on the rear panel is used for Ethernet
communication. If the SCM10 is going to be connected
directly to the PC with an Ethernet cable, a crossover cable
is required! If the SCM10 is to be connected directly
to the network, a straight Ethernet cable is sufcient.
SENSOR INPUT
Sensors are typically connected to the SCM10 using 4 wires; I+, I-, E+, E-.
I+ and I- wires carry a constant current for exciting the sensors. This constant
current can be programmed to be 10µA or 1mA.
E+ and E- wires measure the voltage across the sensor leads and this data is
used to calculate the temperature of the sensor.
Sensors connected using just 2 wires (by connecting I+ to V+ and I- to V- at
the connector) have the voltage drop along the wires added to the sensor
measurement. Hence, 4-leaded sensor connections are recommended for the
best measurements.
Sensor Input connections are done through the DB15 connector on the rear
panel. Refer to Figure 2.3 for the pin out of the I/O connector.
ANALOG OUTPUT
Analog Output, available on the rear panel, generates a voltage or current output
proportional to the temperature or sensor data, as measured by the SCM10.
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.
For the current type output, the range of the output is from 4mA to 20mA with
a resolution of 2.5µA. The compliance voltage for the current output circuitry is
10V, so that the maximum load resistance that the 4-20mA output can support is
500 Ohms.
Analog Output can be programmed to scale with temperature, sensor data or the
natural logarithm of sensor data.
Analog Output scaling is completely customizable by editing the Low Limit and
High Limit values. If the data is less than or equal to the Low Limit value, the
analog output would be 0V or 4mA. Similarly, if the data is greater than or equal
to the High Limit, then the output would be 10V or 20mA.
Analog output connections are done through the DB15 connector on the rear
panel. Refer to Sensor Performance Specications Table on page 6 for the pin
out of the I/O connector.
Figure 2.5

Scientic Instruments, Inc. Model SCM10
14 090-267 Rev A
ALARMS AND RELAYS
Alarms:
The SCM10 has 2 programmable Alarms that can be used to ag 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. Similarly, if the Alarm is set to be a Low Alarm, then the
Alarm turns ON when the temperature measured by SCM10 is less than or
equal to the set point.
Alarms are annunciated through Front Panel LEDs and the Utility Software
(when in use). Additionally, relays can also be congured to be activated when
the Alarm(s) is (are) ON.
Latching is a feature provided to leave Alarm ON upon entering an Alarm
Condition. This is useful to detect faults in the system. The latched alarm can
be turned OFF by pressing the Enter key on the front panel. If latching is
disabled, the alarm turns OFF when the alarm condition no longer exists.
When the latching feature is disabled, the deadband parameter can be used to
prevent the alarm from toggling ON and OFF when temperature varies around
the set point. For example, if the high alarm set point is 300K and the deadband
is 2K, the alarm will turn on, when the temperature goes above 300K, but will
remain ON as long as the temperature is above 300K – 2K = 298K. The alarm
will turn OFF, only when the temperature drops below 298K.
Relays:
The SCM10 has 2 SPDT relays available through the I/O connector in the rear
panel. The relay contacts are rated for 24VDC and 1A.
Each of the relays can be set up to be manually ON or OFF. Alternatively,
they can also be set up to follow alarms, i.e., the relay activates when the
alarm is ON.
When the relays are set up to follow alarms, Relay 1 is always tied to Alarm 1
and Relay 2 is tied to Alarm 2.
The Normally Open, Normally Closed and Common contacts for each relay
are available through the I/O connector in the rear panel. Refer to Sensor
Performance Specications Table on page 6 for the pin out of the I/O connector.

Scientic Instruments, Inc. Model SCM10
15
090-267 Rev A
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. Alarm LEDs on the front panel display the status of the
alarms.
DISPLAY DEFINITION
The front panel display consists of the six digit LEDs capable of showing
numeric and character data. In normal operation, the display shows the
temperature or sensor data depending on the display units selected. It also
displays menus and parameters, when the menu is activated.
To the bottom right hand side of the display are annunciators to show the units
of the displayed data and the alarm status.
DISPLAY UNITS AND ALARM STATUS ANNUNCIATORS
The SCM10 displays sensor data in four different units:
• Kelvin(K)
• Celcius (˚C)
• Fahrenheit (˚F)
• Volts/Ohms (V/Ω)
The user can toggle through the display units using the up and down arrow
buttons on the keypad. The SCM10 saves the display units that were selected
prior to power down and will display the same units when it is powered ON again.
Alarm LEDs A1 and A2 indicate the status of the alarms. The alarm LED is ON, if
the alarm is ON.
Figure 3.1

Scientic Instruments, Inc. Model SCM10
16 090-267 Rev A
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.
Menu is used to activate the menu display. It is also used to get back a level in
the menu hierarchy and eventually to get out of the menu mode.
In the menu display mode, ▲and ▼ keys are used to go up and down the menu
structure. The ▲and ▼ keys are also used to increment or decrement numeric
conguration parameters (e.g., set point, scaling). Holding either key for a few
seconds would make the numbers increment or decrement at a faster rate.
Enter is used to select a particular option and go a level deeper in the menu
hierarchy. It is also used to save the selected options.
INSTRUMENT RESET
In order to reset/restart the SCM10, hold Menu down for 2 seconds.
This is equivalent to toggling the input power off and on again as it resets the
processor and displays the “” message briey before displaying the
current measurement.
MENU STRUCTURE
The following table shows the front panel menu for accessing the SCM10
conguration:
Top Menu Description Sub Menu Description
“InPut” Sensor Curve Selection //..../ Sensor Selection
“ALA 1” Alarm 1 Settings  /  Alarm Disable/
Enable
  /  High/Low Alarm
xxx.xx Alarm Setpoint
 /  Latching/
Non Latching
xx.x Deadband Limit

Scientic Instruments, Inc. Model SCM10
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090-267 Rev A
Top Menu Description Sub Menu Description
“ALA 2” Alarm 2 Settings  /  Alarm Disable/
Enable
  /  High/Low Alarm
xxx.xx Alarm Setpoint
 /  Latching/
Non Latching
 xx.x Deadband Limit
“rLy 1” Relay 1 Settings  / /  Manual Control/
Follow Alarm
“rLy 2” Relay 2 Settings  / /  Manual Control/
Follow Alarm
“OutPut” Analog Output
Settings
/ Voltage/
Current Type
// Scale with
Temperature/
Sensor Data
xxx.xx Low Scale
xxx.xxHigh Scale
“SyS” System Conguration  xxTemperature
Calculation Filter
 xTemperature
Display
resolution
xDisplay
Brightness
 /…/ Serial Baud Rate
xx.xx Firmware
Revision
“nEt” Network Settings .xxx IP Address
.xxx IP Address
.xxx IP Address
.xxx IP Address
  Default IP
Address

Scientic Instruments, Inc. Model SCM10
18 090-267 Rev A
INPUT SETUP
SCM10 supports a variety of sensors including diodes and RTDs. It has 9
standard curves loaded at the factory and room for one user curve. The table
below shows the various sensor curve options available. A suitable sensor
must be selected for sensor input.
Curve No. Sensor
Display Name
Sensor
Description
Exec
Current
Temperature
Range
1 Silicon Diode 10µA 1 – 450K
2 Silicon Diode 10µA 1 – 500K
3 Silicon Diode 10µA 1.4 – 450K
4 Silicon Diode 10µA 1.4 – 500K
5 100 Ω Platinum RTD 1mA 30 – 800K
6 1000 Ω Platinum RTD 1mA 30 – 800K
7 Ruthenium Oxide RTD 10µA 0.05 – 20K
8 Ruthenium Oxide RTD 10µA 2 – 273K
9 Silicon Diode 10µA 0 – 460K
10  - - -
To View Active Sensor Curve: Press Menu and press ▲or▼ keys until the word
“” appears on the display. Press Enter to step into level 2 of this option.
This will display the sensor that is currently active.
To Activate a different sensor curve: Perform the steps from the above paragraph
to get to level 2 of the menu and then , press Enter again to step into Level 3
of the menu. 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.

Scientic Instruments, Inc. Model SCM10
19
090-267 Rev A
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
“ ” (or “ ” to access Alarm 2 settings) appears on the display. Press
Enter to select this option. This displays the Alarm submenu. Use ▲or▼ keys to
go through the various Alarm settings. Press Enter to edit any of these settings.
Use ▲or▼ keys until the desired option is displayed. Press Enter to save the
change or press Menu to get out of the edit menu without saving changes.
The rest of this section describes the Alarm submenu for Alarm 1 settings. Alarm
2 settings are accessed similarly by selecting the “ ”option.
Alarm Enable/Disable: This is displayed as “ ” (or “ ”) and is used to
disable or enable the Alarm 1 feature.
Alarm Low/High: Displayed as “ ” (or “ ”), this parameter is used to
congure the alarm for Low/High setting.
Alarm Setpoint: “xxx.xx” denes the numeric setpoint for the alarm (in Kelvin).
To edit the number, use ▲or▼ keys. Holding the arrow keys for a few seconds
changes the number at a faster rate. The minimum and maximum values for the
set point are 0 K and 9999.9 K.
Latching/Non-Latching: “ ” enables latching feature in the Alarm. “ ”
disables latching.
Deadband: Displayed as “ xx.x”, this numeric parameter denes the deadband
region when the alarm is set up to be the non-latching type. When the
temperature goes beyond the setpoint , the alarm turns ON and continuous
to remain ON even if the temperature falls outside of the setpoint, but within
deadband limits.

Scientic Instruments, Inc. Model SCM10
20 090-267 Rev A
RELAY SETUP
The SCM10 has 2 programmable relays each of which can be manually
controlled or set up to follow the alarm(s).
To access the relay setting, press Menu and press ▲or▼ keys until the word
“ ” (or “ ” to access relay 2 setting) appears on the display.
Press Enter to select this option. This displays the current relay setting. To set
a different option, press Enter to go into edit mode. Use ▲or▼ keys to go to
the desired option and press Enter to save this.
Below are the various relay conguration options:
• “ ” stands for Relay Manually Open. This is the power off state
of the relay. In this state Normally Closed contact is connected to COM.
• “ ” stands for Relay Manually Closed/Activated. In this state, Normally
Open contact is connected to COM.
• “ ” is the option where relay follows alarm. When this option is chosen,
Relay 1 is activated when Alarm 1 is ON and relay deactivates when alarm is
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. Voltage output
ranges from 0-10V and the current output ranges from 4mA to 20mA. Low Limit
and High limit values set the scaling relationship between the data and the
analog output. Low and High limit values are in Kelvin (for temperature data),
kOhms or V (for sensor data) and in (Ohms) for logarithm data.
To access the Analog output settings, press Menu key and press ▲or▼ keys
until the word “” appears on the display. Press Enter to select this option.
This displays the Analog Output submenu. Use ▲or▼ keys to go through the
various settings. Press Enter key to edit any of these settings. Use ▲or▼ keys
until the desired option is displayed. Press Enter to save the change or press
Menu to get out of the edit mode without saving changes.
Below are the various settings for the Analog Output:
• OutputType: “” stands for Voltage type and “” stands for Current
type output
• OutputData: The Analog output can be congured to represent temperature,
sensor data or the natural logarithm of the sensor data. “” represents
temperature, “” represents the sensor data and “” represents the
natural logarithm of sensor data.