ASL INTERCOM F200 User manual

Precision Thermometer
F200
Issue 3
Operator's Handbook
Smart Probe Editor Handbook
Firmware Download
Quick Start Guide
Smart Probe Editor Software
Smart Probe Conversion Kit
Visit the ASL web site

Precision Thermometer
Downloading the latest F200 instrument firmware
This utility will allow you to access the latest firmware for the F200.
Ensure that your computer is connected to the Internet.
Press the button below and follow the instructions on screen.
After you have successfully downloaded the self extracting files to your
computer, you must ensure that your F200 is connected to a computer using
the correct RS232 cable which must be a 9-way female to 9-way female null
modem type.
You will require a user name and password. Contact the
sales office for more information.
ASL
F200
Visit the downloader

F
2
0
0
Menu
Clear
Enter
Ch UnitsHoldA-B Zero
°C
Ω°F
K
o
Precision Thermometer
+27.809CCh1
Units
°C
Ω°F
K
F200
Quick start guide
s
Channel selected Units
UNIT Selects measurement display units: °C, °F, K, Ω
MENU Cycles through the main menu functions of the instrument.
Each subsequent press of
the unit button cycles the
readings between
°C - °F - K - Ω
HOLD Display hold, trigger continuous measurement or hold.
SMART probe is connected
Passive probe is connected
ZERO Nulls the display at the current reading and displays measured values relative to the nulled value.
A-B Relative measurement function displays the difference between the ChA and ChB inputs
CH Selects and displays measurement channel 1 to 8CH Selects and displays measurement channel 1 to 8
CLEAR Clears any data entry errors or min/max statistics
ENTER Saves data entry and returns to previous menu.
TYPES OF PROBE
F200 can accept up to eight thermometer input channels. The 4-wire SMART probes or passive PRTs are connected via the 5-pin DIN
sockets located on the instruments top panel for ease of use. SMART probes are automatically detected before each measurement process
and are indicated by Son the bottom left hand corner of the display. Passive probes are indicated by a dot.
SMART probes store their calibration data and other useful data in an EEPROM in the probe’s plug which can be plugged into any channel.
Passive probes have their calibration data stored in the F200 and can only be used in the channel where you have selected to enter this data.
PASSWORD PROTECTION
User entry to editing the probe calibration (Menu 1) and instrument calibration (Menu 3) are password protected. The user default is 9900,
but this can be changed to your own password using any terminal program via the RS232 interface.
THE MENU
Subsequent pressing of the MENU button will cycle the main menu through the top level menu enabling you to configure your F200.
Review/Edit Probe Calibration allows you to review probe calibration and edit probe coefficients. F200 provides 3 standard
algorithms for converting resistance to temperature. The choice will depend on the type of PRT and its calibration.
Din (1992):- used for un-calibrated industrial probes with 0.00385 “alpha” value, to provide a conversion of resistance to temperature in
accordance with BS EN60751 (ITS90) standard.
CvD coefficients:- Callendar Van Dusen used for calibrated industrial or low “alpha” PRTs of 0.00385.
ITS90 coefficients:- used for calibrated high “alpha” PRTs of nominally 0.003926.
Statistics is a basic statistical utility which allows you to capture maximum and minimum readings. Can be reset to zero.
Options allows you to calibrate the F200 against a fixed value resistor, turn the RS232 communication ON and OFF and to display
the version of firmware in your instrument.
Review SMART probe data is only accessible if a SMART probe is connected and allows you to:
View calibration date and calibration due date. View source (calibration house). View probe serial number.
View maximum and minimum temperatures since last calibration. View maximum and minimum temperatures ever.
Set Date/Time allows the real time clock to be set.
Brightness allows the display brightness to be set for different ambient light conditions to suit the user.
Menu 1-
Menu 2 -
Menu 3 -
Menu 4 -
Menu 5 -
Menu 6 -
Pt100
1
2
3
4
5
Shield
V+
I+ I -
V-
View on 5 pin DIN connector showing
the 4-wire PRT connection.
S
F200 has been designed for ease of use and this quick start should help you to know your instrument. A more comprehensive guide is
available in the Operator’s Handbook on CD Rom.

Statistics
Options
SmartProbe
Min = 26.7508 R
Talk only Off
Version: 1 lock : 0Version: 1 lock : 0
Cal date: 07-01-2003
Source:
Serial Number:
Max since cal: 32
Max ever: 32
Max = 100.0401 R
F200 V1.0 16DEC02
Password 0000
Min
Cal
Review
Min
On
Cal Type: DinCal Type: Din
Due date: 07-01-2004
ASL
ASL0001
Min since cal: 0
Min ever: 0
Min
<
<
+
+
>
>
Max
Ver
Com
Max
Off
Max
Enter
Enter
Enter
Enter
Enter
Enter
Enter
Enter
Enter
Menu 3
Menu 2Menu 1
Menu 4
Enter Enter EnterEnter Menu
Menu
Menu Menu
Menu
Menu
Menu
Menu
Menu
Menu Clear
Clear
To return to
reading
To return to
reading
To return to
reading
To return to
reading
To return to
reading
To return to
reading
To return to
reading
To return to
reading
To return to
reading
To return to
reading
To return to
reading
To return to
reading
To return to
reading
To return to
reading
Only accessible if
SMART probe is
attached
Remains when
probe is
re-calibrated.
Calibration
House
Enter resistor value
Probe
Serial No
REVIEW / EDIT
- Probe Calibration
REVIEW
- SMART probe data
OPTIONS
- Calibration / Communicate /
Firmware version
STATISTICS
- Max/Min
Ch1
Ch1
Ch1
Ch1
Ch1
Coef Ap +3.908300e-03
Coef Ap +3. 908300e -03
Password 0000
A
Din
Ap
Ap
A
<
<
+
+
>
>
>
>
PRT
PRT
PRT
PRT
PRT
Review
B
B
Din
Din
Din
Its90
Its90
Edit
C
Its90
Bp
Bp
C
R0
CvD
Cp
Cp
Dp
Dp
R0
Enter
Enter
Enter
Enter
Enter
Menu
Menu
Menu
Menu
Menu
Menu
Menu
To return to
reading
To return to
reading
To return to
reading
Press twice to
return to reading
To return to
reading
To return to
reading
Select Its90
or CvD
Enter next co-efficient
Select channel
To return to
reading
Save changes
Another Channel?
Chan 1
Yes
Yes
No
No
< +>
Attach Ref
Ref ? 100.000000
OK Cancel
Real Time Clock
Date = 28/01/03 Time = 19:58:37
Date
< <
+ +> >
Time
Menu 5
Enter EnterEnter Enter
Menu Menu Enter Enter
To return to
reading
To return to
reading
SET
- Date / Time
Brightness
+
Menu 6
Enter
Menu
To return to
reading
BRIGHTNESS
- Display
F200
Menu Structure

Contents
1 x 5 Pin Smart connector DIN plug
1 x ‘S’ Smart Probe cable identification sleeve
About Smart Probes
Smart Probes are like passive probes except for one key advantage, all the probe details, calibration data and probe history are
stored within the probe’s plug and not within the measurement instrument. Smart Probes can freely be moved from channel to
channel or instrument to instrument without the need to manually enter any data into the measurement instrument.
How Smart Probes Work
The connector on a Smart Probes is fitted with a SMART memory device; this device is transparent during temperature
measurements. Before each measurement cycle the probe is interrogated, if a Smart Probe is detected an ‘s’ is displayed in the
bottom left hand corner of the display. The probe data is read into the measurement instrument for use in the measurement process.
Smart Probe Data Security
To maintain a high level of data security the Smart Probe has a built in data lock. If the data lock is set, the Smart Probe data cannot
be modified. The state of the data lock can be changed from a PC via the F200 serial communication port using the ASL
Smart Probe Editor software.
Lock = 0 Probe unlocked data can be modified.
Lock = 1 Probe locked data cannot be modified.
Smart Probe Calibration Supervisor
To assist in maintaining a valid calibration the instrument checks the Smart Probes next calibration date and compares it with the
instruments current date. If the smart probe date is found to have expired the instrument will warn the operator ‘Probe is out of
calibration’.
Smart Probe Working Range Monitor
The Smart Probe working range monitor is used to monitor if a smart probe is used outside its specified working range.
On completion of each measurement, the new reading is compared with the probe working range. If the new reading is found to be
outside the probe working range, the appropriate data fields are updated.
Smart Probe Assembly Procedure
To make a Smart Probe you simply have to fit a Smart Connector to your probe assembly. Your Smart connector already has a
configured memory device fitted inside. You will need to un-screw the assembly and remove the cable clamp so that you own probe’s
cable can be connected to the appropriate pins as shown in the diagram below. Ensure that the “S” Smart Probe identification sleeve
is fitted to the cable.
Smart Probe Conversion Kit

Review Edit Smart Probe Data
The Smart Probe data can be reviewed or edited in a number of ways.
o Review the data from the F200 Smart Probe menu (refer to section 4.1.6. of F200 handbook).
o Review or edit the temperature conversion method and coefficients from the F200 channel set up menu (refer to section 4.1.3. of
F200 handbook).
o Review or edit the data from a PC via the F200 serial communication port using the ASL Smart Probe Editor software.
o Review or edit the data from a PC via the F200 serial communication port using a standard PC serial communication terminal
program (refer to section 7 of F200 handbook).
Smart Probe Data
Lock
Store the Smart Probe data lock state, maintain a high level of data security.
Format
SENSe:FRTD:FORmat Store the Smart Probe data format, for use in maintaining future compatibility.
Probe ID
SENSe:FRTD:IDENtification Store the Smart Probe identification number, 20 characters maximum.
Conversion Standard
SENSe:FRTD:STANdard Store the required resistance to temperature conversion method, Din, CvD or ITS90.
Coefficient Ap, Bp, Cp, Dp, R0.01, Wt, An, Bn
SENSe:FRTD:COEFficient Store the required coefficient for use in resistance to temperature conversion.
Conversion Temperature Range Required Coefficients
Din -200#C to 850#C R0, A, B, C.
CvD -200#C to 850#C R0, A, B, C.
ITS90 83.8058K to 273.16K R0.01, An, Bn.
ITS90 273.15K to 961.78#C R0.01, Ap, Bp, Cp, Dp, Wt.
ITS90 273.15K to 660.323#C R0.01, Ap, Bp, Cp.
ITS90 273.15K to 419.527#C R0.01, Ap, Bp.
ITS90 273.15K to 231.928#C R0.01, Ap, Bp.
ITS90 273.15K to 156.59865#C R0.01, Ap.
ITS90 273.15K to 29.7646#C R0.01, Ap.
ITS90 234.3156K to 29.7646#C R0.01, Ap, Bp.
Min working range
SENSe:FRTD:RANGe Store the Smart Probe working range minimum value, range 0 to 400 ohms.
Max working range
SENSe:FRTD:RANGe Store the Smart Probe working range maximum value, range 0 to 400 ohms.
Min since last cal
Record the minimum value the smart probe exceeded outside its working range since it was last calibrated, automatically reset when
the Smart Probe is wiped.
Max since last cal
Record the maximum value the Smart Probe exceeded outside its working range since it was last calibrated, automatically reset
when the Smart Probe is wiped.
Min ever
Record the minimum value the Smart Probe exceeded outside its working range during its working life, automatically reset when the
Smart Probe is wiped.
Max ever
Record the maximum value the Smart Probe exceeded outside its working range during its working life, automatically reset when the
Smart Probe is wiped.
Date
SENSe:FRTD:CAL:DATE Store the date the Smart Probe was calibrated DD/MM/YYYY.
Next Date
SENSe:FRTD:CAL:NEXT Store the date the Smart Probe next calibration is due DD/MM/YYYY.
Source
SENSe:FRTD:CAL:SOURce Store name of the company responsible for the Smart Probe calibration 20 characters maximum.
Calibration History
SENSe:FRTD:CAL:HISTory? Maintain the calibration history of the Smart Probe. The calibration history is automatically updated
when the next calibration date is updated. The calibration history is cleared when the probe is wiped.
Your new Smart Probe has been configure with the following data prior to shipment:
Probe ID: Set to Blank Conversion Type Din
Ap 3.908300e-03
Format: 1 Bp -5.775000e-07
Cp -4.183000e-12
Lock: No R0 100.000000 ohms
Working Range: Minimum 20 ohms Calibration Date: Set to date the Smart Probe was configured.
Maximum 390 ohms Next Date: Set to 1 year from the configured date
Source: Set to Un-Calibrated
Smart Probe Conversion Kit

F200 Smart Probe Editor User Guide
Table of Contents
1Running the Smart Probe Editor.............................................................................................................. 2
2Function keys ............................................................................................................................................ 3
2.1 Wipe Probe ............................................................................................................................................. 3
2.2 Read Probe: ............................................................................................................................................ 3
2.3 Write to Probe ......................................................................................................................................... 3
2.4 Save to File ............................................................................................................................................. 3
2.5 Read File................................................................................................................................................. 3
2.6 Print Report ............................................................................................................................................. 3
2.7 Help......................................................................................................................................................... 3
2.8 About....................................................................................................................................................... 3
2.9 Close ....................................................................................................................................................... 3
3System........................................................................................................................................................ 3
4Probe Control............................................................................................................................................. 4
5Working Range .......................................................................................................................................... 4
6Coefficients................................................................................................................................................ 5
7Calibration.................................................................................................................................................. 6
8Please Enter (Calibration certificate) ...................................................................................................... 7
SMP-14-001 1 Issue 1

F200 Smart Probe Editor User Guide
1 Running the Smart Probe Editor
Select Programs from the system Start menu.
Select Smart_Probe_Editor from the list of applications shown.
Click on Smart_Probe_Editor to run the utility.
The welcome screen will appear briefly followed by the control panel.
SMP-14-001 2 Issue 1

F200 Smart Probe Editor User Guide
2 Function keys
2.1 Wipe Probe
Sets the selected smart probe to default settings and clears the calibration history. The user is prompted “Are
you sure you want to wipe the probe?”
2.2 Read Probe:
Reads the selected probe and updates the smart probe edit fields.
2.3 Write to Probe
Updates the selected smart probe with the data from the smart probe editor fields.
2.4 Save to File
Saves the smart probe editor settings to a specified file.
2.5 Read File
Loads the smart probe editor with the settings from a selected file.
2.6 Print Report
Prints the smart probe editor settings to a printer.
2.7 Help
How to use the smart probe editor.
2.8 About
Smart probe editor manufacture and software version.
2.9 Close
Close the application.
3 System
Comm Port: Select the serial communication port the instrument is connected to.
System ID: On the first communication the field displays the instrument identification string in the form
<manufacture>,<model no>,<serial no>,<firmware version>.
Password: Enter the instrument current password to allow the modification of the smart probe data 4 digit
number default password 9900.
Channel: Select the instrument input channel the smart probe you wish to configure is connected to.
SMP-14-001 3 Issue 1

F200 Smart Probe Editor User Guide
4 Probe Control
Probe ID: Enter the serial number of the smart probe 20 characters maximum.
Format: Displays the smart probe data format. Always set to 1.
Lock: Each smart probe has a lock facility, if a smart probe Lock is set to 'Yes' the data in the smart probe
can not be modified from the instrument.
5 Working Range
Min: Enter the minimum working range for the smart probe 0 to 400 ohms.
Max: Enter the maximum working range for the smart probe 0 to 400 ohms.
Min since last cal: Displays the minimum value the smart probe exceeded outside its working range since its
last calibration, automatically reset each time the smart probe is written to.
Max since last cal: Displays the maximum value the smart probe exceeded outside its working range since
its last calibration, automatically reset each time the smart probe is written to.
Min ever: Displays the minimum value the smart probe exceeded outside its working range during its working
life, automatically reset each time the smart probe is wiped.
Max ever: Displays the maximum value the smart probe exceeded outside its working range during its
working life, automatically reset each time the smart probe is wiped.
SMP-14-001 4 Issue 1

F200 Smart Probe Editor User Guide
6 Coefficients
Conversion type: Select the required resistance to temperature conversion method Din, CvD or ITS90.
Ap, Bp, Cp, Dp, R0.01, Wt, An, Bn
Conversion Temperature Range Required Coefficients
Din -200 C to 850 C R0, A, B, C.
CvD -200 C to 850 C R0, A, B, C.
ITS90 83.8058K to 273.16K R0.01, An, Bn.
ITS90 273.15K to 961.78 C R0.01, Ap, Bp, Cp, Dp, Wt.
ITS90 273.15K to 660.323 C R0.01, Ap, Bp, Cp.
ITS90 273.15K to 419.527 C R0.01, Ap, Bp.
ITS90 273.15K to 231.928 C R0.01, Ap, Bp.
ITS90 273.15K to 156.59865 C R0.01, Ap.
ITS90 273.15K to 29.7646 C R0.01, Ap.
ITS90 234.3156K to 29.7646 C R0.01, Ap, Bp.
SMP-14-001 5 Issue 1

F200 Smart Probe Editor User Guide
7 Calibration
Date: Enter the date the smart probe was calibrated DD/MM/YYYY.
The date is automatically set to the current PC date when the program is launched.
Next Date: Enter the date the smart probe next calibration date is due DD/MM/YYYY.
Source: Enter name of the company responsible for the smart probe calibration 20 characters maximum.
Calibration History: Displays the calibration history after reading the selected smart probe. Calibration history
can only be cleared by the Wipe Probe function.
SMP-14-001 6 Issue 1

F200 Smart Probe Editor User Guide
8 Please Enter (Calibration certificate)
The following data is not stored in the smart probe but is included for reference in the printed report.
Probe Type: Enter the smart probe type eg T100-450.
Certificate Number: Enter the smart probe calibration certificate reference number.
SMP-14-001 7 Issue 1

Table of Contents
1. INTRODUCTION .................................................................................................................................... 1-1
1.1 Overview ............................................................................................................................................ 1-1
1.2 Definitions and Terminology .............................................................................................................. 1-1
1.3 Principles of measurement ................................................................................................................ 1-2
1.3.1 PRT measurement......................................................................................................................... 1-2
2. SETTING UP THE F200 ........................................................................................................................2-1
2.1 Safety information .............................................................................................................................. 2-1
2.2 Unpacking the instrument .................................................................................................................. 2-1
3. ABOUT THE F200 ................................................................................................................................. 3-1
3.1 The Front Panel ................................................................................................................................. 3-1
3.2 About the display screen.................................................................................................................... 3-1
3.3 The Front Panel keypad..................................................................................................................... 3-1
3.4 Thermometer inputs...........................................................................................................................3-3
3.5 Rear panel.......................................................................................................................................... 3-4
3.5.1 AC Power Input Socket.................................................................................................................. 3-4
3.5.2 Rating plate.................................................................................................................................... 3-4
3.5.3 Supply On/Off Switch..................................................................................................................... 3-4
3.5.4 RS232 Communication interface connector..................................................................................3-4
3.5.5 Name plate .................................................................................................................................... 3-4
4. OPERATING THE F200.........................................................................................................................4-1
4.1 Instrument operating mode ................................................................................................................ 4-1
4.1.1 Temperature Measurement Mode .......................................................................................4-1
4.1.2 Configuration Mode ....................................................................................................................... 4-2
4.1.3 Setting up Temperature measurement.......................................................................................... 4-3
4.1.4 Statistics......................................................................................................................................... 4-5
4.1.5 Options........................................................................................................................................... 4-5
4.1.6 Smart Probe review ....................................................................................................................... 4-6
4.1.7 Real Time Clock ............................................................................................................................ 4-7
4.1.8 Display Brightness ......................................................................................................................... 4-7
5. INSTRUMENT MEASUREMENT RANGE ............................................................................................5-1
5.1 Instrument measurement working range ...........................................................................................5-1
5.2 Open Circuit Probes...........................................................................................................................5-1
5.3 Measurement Range ......................................................................................................................... 5-1
6. SMART PROBES ..................................................................................................................................6-1
6.1 About Smart Probes...........................................................................................................................6-1
6.2 How Smart Probes Work ...................................................................................................................6-1
6.3 Smart Probe Data Security ................................................................................................................6-1
6.4 Smart Probe Calibration Supervisor ..................................................................................................6-1
6.5 Smart Probe Working Range Monitor................................................................................................6-1
6.6 Review Edit Data................................................................................................................................ 6-2
6.7 Smart Probe Data .............................................................................................................................. 6-2
7. CALIBRATING THE F200 .....................................................................................................................7-1
F200-14-001 Page 1-1
ASL 2003

Contents
7.1 F200 Instrument calibration ...............................................................................................................7-1
7.1.1 Instrument Calibration Supervisor .................................................................................................7-1
7.2 Equipment ..........................................................................................................................................7-1
7.3 Calibration procedure.........................................................................................................................7-1
8. COMMUNICATIONS INTERFACE........................................................................................................8-1
8.1 Introduction ........................................................................................................................................8-1
8.2 Overview of the RS-232 Serial Interface ...........................................................................................8-1
8.2.1 The RS-232 Connector..................................................................................................................8-2
8.2.2 Pin Connections.............................................................................................................................8-2
8.3 RS-232 Settings .................................................................................................................................8-2
8.3.1 Talk only mode (Auto output) ........................................................................................................8-3
8.3.2 Remote mode (Local lockout)........................................................................................................8-3
8.3.3 Power up state...............................................................................................................................8-3
8.3.4 Communication protocol ................................................................................................................8-3
8.3.5 Programming command syntax.....................................................................................................8-3
8.3.6 Long form short form commands...................................................................................................8-4
8.3.7 Case sensitivity..............................................................................................................................8-4
8.3.8 Command Terminators (CR) or (CR)(LF)......................................................................................8-4
8.3.9 Input Buffer ....................................................................................................................................8-4
8.3.10 Output Data Format...................................................................................................................8-4
8.4 RS-232 Interface Commands ............................................................................................................8-5
8.4.1 SYSTem:REMote ..........................................................................................................................8-5
8.4.2 SYSTem:LOCal .............................................................................................................................8-5
8.4.3 *IDN? .............................................................................................................................................8-5
8.4.4 CAL:DATE <year>,<month>,<day>...............................................................................................8-6
8.4.5 CAL:DATE? ...................................................................................................................................8-6
8.4.6 CAL:NEXTDATE <year>,<month>,<day>.....................................................................................8-6
8.4.7 CAL:NEXTDATE?..........................................................................................................................8-6
8.4.8 System Command Summary.........................................................................................................8-7
8.5 Measurement Command Group ........................................................................................................8-8
8.5.1 CONFigure:CHANnel <channel>...................................................................................................8-8
8.5.2 CONFigure?...................................................................................................................................8-8
8.5.3 FETch? ..........................................................................................................................................8-8
8.5.4 READ? ...........................................................................................................................................8-9
8.5.5 MEASure Command......................................................................................................................8-9
8.5.6 MEASure:CHANnel? <channel> ...................................................................................................8-9
8.6 UNIT Command Group ....................................................................................................................8-10
8.6.1 UNIT:TEMPerature <units> .........................................................................................................8-10
8.6.2 UNIT:TEMPerature? ....................................................................................................................8-10
8.7 Trigger Command Group .................................................................................................................8-11
8.7.1 INITiate ........................................................................................................................................8-11
8.7.2 ABORt..........................................................................................................................................8-11
8.7.3 TRIGger:MODE <mode>.............................................................................................................8-11
8.8 System Related Commands ............................................................................................................8-12
8.8.1 SYSTem:PASSword:DEFAult......................................................................................................8-12
8.8.2 SYSTem:PASSword:CENable <password>................................................................................8-12
8.8.3 SYSTem:PASSword:CDISable <password>...............................................................................8-12
8.8.4 SYSTem:PASSword:CENable:STATe? ......................................................................................8-12
8.8.5 SYSTem:PASSword:NEW <current password>,<new password> .............................................8-13
Page 1-2 F200-14-001
ASL 2003

Introduction
8.8.6 SYSTem:BEEPer:IMMediate.......................................................................................................8-13
8.8.7 SYSTem:TIME <hour>,<minute>,<second> ...............................................................................8-13
8.8.8 SYSTem:TIME?...........................................................................................................................8-13
8.8.9 SYSTem:DATE <year>, <month>, <day> ...................................................................................8-14
8.8.10 SYSTem:DATE?......................................................................................................................8-14
8.9 SENSe Command Group.................................................................................................................8-15
8.9.1 SENSe:ZERO:AUTO <mode>.....................................................................................................8-15
8.9.2 SENSe:ZERO:AUTO? ................................................................................................................. 8-15
8.9.3 SENSe:FRTD:CAL:DATE <year>,<month>,<day>.....................................................................8-15
8.9.4 SENSe:FRTD:CAL:DATE?..........................................................................................................8-16
8.9.5 SENSe:FRTD:CAL:NEXT <year>,<month>,<day>.....................................................................8-16
8.9.6 SENSe:FRTD:CAL:NEXT?..........................................................................................................8-16
8.9.7 SENSe:FRTD:CAL:HISTory? ......................................................................................................8-17
8.9.8 SENSe:FRTD:CAL:SOURce <source>.......................................................................................8-17
8.9.9 SENSe:FRTD:CAL:SOURce? .....................................................................................................8-17
8.9.10 SENSe:FRTD:FORMat <format>............................................................................................8-17
8.9.11 SENSe:FRTD:FORMat? .........................................................................................................8-18
8.9.12 SENSe:FRTD:STANdard <standard>.....................................................................................8-18
8.9.13 SENSe:FRTD:STANdard? ......................................................................................................8-18
8.9.14 SENSe:FRTD:COEFficient <coefficient>,<value> ..................................................................8-19
8.9.15 SENSe:FRTD:COEFficient? <coefficient>..............................................................................8-19
8.9.16 SENSe:FRTD:IDENtification <identification>..........................................................................8-19
8.9.17 SENSe:FRTD:IDENtification? .................................................................................................8-20
8.9.18 SENSe:FRTD:RANGe <rmax>,<rmin> ...................................................................................8-20
8.9.19 SENSe:FRTD:RANGe?...........................................................................................................8-20
8.9.20 SENSe:FRTD:LOCK ...............................................................................................................8-21
8.9.21 SENSe:FRTD:LOCK? .............................................................................................................8-21
8.9.22 Command summary ................................................................................................................8-21
9. OPTIONS AND ACCESSORIES ........................................................................................................... 9-1
9.1 Accessories........................................................................................................................................ 9-1
10. SPECIFICATION .............................................................................................................................10-1
10.1 Resistance thermometer measurement...........................................................................................10-1
10.2 Display .............................................................................................................................................10-1
10.3 Supply ..............................................................................................................................................10-1
10.4 Environmental ..................................................................................................................................10-2
10.5 Dimensions ......................................................................................................................................10-2
10.6 Pt 100 System Accuracy..................................................................................................................10-2
11. CLEANING AND MAINTENANCE..................................................................................................11-1
11.1 Cleaning ...........................................................................................................................................11-1
11.2 Preventive Maintenance ..................................................................................................................11-1
11.3 General Safety Warning...................................................................................................................11-1
12. SERVICE AND WARRANTY ..........................................................................................................12-1
12.1 Technical Support ............................................................................................................................12-1
12.2 Returned Instruments ......................................................................................................................12-1
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ASL 2003

Contents
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ASL 2003

1. Introduction
1.1 Overview
The F200 Precision Thermometer is a high accuracy instrument designed for laboratory and industrial
temperature measurement and calibration applications.
Features include:
!" The number of input channel can be expanded from two to eight channels;
!" A large graphic VFD display for excellent viewing of temperature measurement values and
configuration settings;
!" Galvanically isolated RS232C communication interface (4KV isolation) as standard for
automated monitoring and calibration applications;
!" Self calibration against a traceable external standard;
The F200 will operate with all 4-wire Pt100 (100 Ohm) platinum resistance thermometers.
Temperature measurement units are selectable by single front panel key operation;"
"#C, #F, K & $%
Resistance accuracy is better than &4m$' (over full range at +20°C ±2°C) equivalent to temperature
measurement precision of &10mK for Pt100 thermometers. Total system measurement uncertainties
as low as &15mK are possible when the F200 is used with a calibrated reference thermometer.
Overall system accuracy depends on the PRT quality and calibration.
1.2 Definitions and Terminology
i. 0°C = 273.15 K
ii. 1 mK (milli-Kelvin) = 0.001#C (one milli-degree Celsius)
iii. 1 milli-degree C = 0.001#C = 1m#C = 1mK = 1.8m#F
iv. 1 milli-degree F = 0.001#F = 1m#F = 0.56mK = 0.56m#C
v. Alpha, or (, is the temperature coefficient, or temperature sensitivity, of the platinum wire
used in PRTs. In general, the greater the alpha value, the better the PRT thermometer
measurement reproducibility, stability and performance.
vi. Abbreviations for platinum resistance thermometers include:
PRT (Platinum Resistance Thermometer)
Pt100 (PRT with nominally 100$resistance at 0#C)
RTD (Resistance Temperature Device)
vii. System accuracy refers to the overall, combined accuracy of the F200 and thermometer.
F200-14-001 Page 1-1
ASL 2003

Introduction
General warning symbol. This indicates that a
hazardous condition or general danger may exist. You
must read the relevant sections in the Operator’s
Handbook before operating the instrument.
1.3 Principles of measurement
1.3.1 PRT measurement
The F200 measures the voltage (Vt) developed across the unknown sensor resistance (Rt) and the
voltage (Vs) across a stable internal reference resistance (Rs). The voltages are in proportion to the
resistances so the thermometer resistance is derived from:
Rt= Rsx Vt/ Vs
This technique achieves immunity from slow moving time and temperature drift in the electronics, as it
is not affected by voltage measurement gain variations or current source fluctuations.
In the same way that AC resistance measurement eliminates thermal EMFs, switched DC achieves a
similar advantage. Switched DC works by reversing the current flow on alternate measurement cycles
and taking the average value, thereby cancelling any thermal EMF offsets from the measurement.
For PRTs, the relationship between resistance and temperature varies slightly from one PRT to
another. Therefore, no matter how accurately the F200 measures the PRT resistance, if the
relationship between resistance and temperature for a particular PRT is not known, accurate
temperature measurement is not possible.
The F200 uses PRT calibration data to overcome this problem and calculates temperature from
temperature conversion functions stored in either the PRT’s ‘SMART’ connector or the instruments
internal memory. This method enables the F200 accurately to convert resistance to temperature,
uniquely for each PRT used. It is very important therefore that a PRT without ‘SMART’ connector is
used on the correct and properly configured input channel.
The system accuracy is a combination of the F200 accuracy in measuring PRT resistance and the
calibration uncertainty placed on the PRTs by the calibrating laboratory. Using the F200 with PRT
type T100-250-1, this is &0.025#C for temperatures from -50#C to +250#C.
Page 1-2 F200-14-001
ASL 2003

2. Setting up the F200
2.1 Safety information
!" Please read the safety information sheet before operating the F200.
2.2 Unpacking the instrument
When you unpack the F200 thermometer, check that the following items are present before starting to
use the unit:
!" 1x F200 precision thermometer
!" 1x AC power cord
!" 1x Quick-start guide
!" 1x Operator’s handbook on CD
!" 1x Calibration certificate
Please contact the ASL Technical Services Group immediately if any of these items are missing or
damaged.
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ASL 2003