Fluke 9009 User manual

9009
Industrial Dual-Block Calibrator
User’s Guide
February 2013 Rev. 1, 3/22
© 2013-2022 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.

LIMITED WARRANTY AND LIMITATION OF LIABILITY
Each Fluke product is warranted to be free from defects in material and workmanship under normal use and
service. The warranty period is one year and begins on the date of shipment. Parts, product repairs, and services
are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of a Fluke
authorized reseller, and does not apply to fuses, disposable batteries, or to any product which, in Fluke's opinion,
has been misused, altered, neglected, contaminated, or damaged by accident or abnormal conditions of operation
or handling. Fluke warrants that software will operate substantially in accordance with its functional specifications
for 90 days and that it has been properly recorded on non-defective media. Fluke does not warrant that software
will be error free or operate without interruption.
Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but
have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is available only if
product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable international price.
Fluke reserves the right to invoice Buyer for importation costs of repair/replacement parts when product purchased
in one country is submitted for repair in another country.
Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of charge repair, or
replacement of a defective product which is returned to a Fluke authorized service center within the warranty
period.
To obtain warranty service, contact your nearest Fluke authorized service center to obtain return authorization
information, then send the product to that service center, with a description of the difficulty, postage and insurance
prepaid (FOB Destination). Fluke assumes no risk for damage in transit. Following warranty repair, the product will
be returned to Buyer, transportation prepaid (FOB Destination). If Fluke determines that failure was caused by
neglect, misuse, contamination, alteration, accident, or abnormal condition of operation or handling, including
overvoltage failures caused by use outside the product's specified rating, or normal wear and tear of mechanical
components, Fluke will provide an estimate of repair costs and obtain authorization before commencing the work.
Following repair, the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the
repair and return transportation charges (FOB Shipping Point).
THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE FOR ANY
SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF
DATA, ARISING FROM ANY CAUSE OR THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation
of incidental or consequential damages, the limitations and exclusions of this warranty may not apply to every
buyer. If any provision of this Warranty is held invalid or unenforceable by a court or other decision-maker of
competent jurisdiction, such holding will not affect the validity or enforceability of any other provision.
11/99
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
U.S.A.
Fluke Europe B. V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands

i
Table of Contents
Title Page
Introduction................................................................................................ 1
Safety Information ..................................................................................... 2
Contact Fluke Calibration .......................................................................... 2
Service Information.................................................................................... 3
Specifications ............................................................................................ 3
Quick Start................................................................................................. 3
Unpack the Product................................................................................... 3
Set Up........................................................................................................ 3
Parts and Controls..................................................................................... 4
Top Panel (Lid Open) ........................................................................... 4
Constant Temperature Block ................................................................ 5
Accessories ............................................................................................... 6
General Operation ..................................................................................... 7
Change Display Units ........................................................................... 7
Set the Temperature............................................................................. 7
Controller Operation ............................................................................. 7
Well Temperature ................................................................................. 7
Temperature Set-point.......................................................................... 8
Programmable Set-points ..................................................................... 8
Set-point Value ..................................................................................... 8
Temperature Scale Units ...................................................................... 10
Scan .......................................................................................................... 10
Scan Control ......................................................................................... 10
Scan Rate ............................................................................................. 10
Secondary Menu ....................................................................................... 10
Heater Power........................................................................................ 11
Proportional Band ................................................................................. 11
Controller Configuration............................................................................. 12
Operating Parameters .......................................................................... 12
Serial Interface Parameters .................................................................. 13
Serial Interface Setup ........................................................................... 13
BAUD Rate ....................................................................................... 13
Sample Period .................................................................................. 13
Duplex Mode..................................................................................... 14
Linefeed ............................................................................................ 14

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User’s Guide
ii
Calibration Parameters......................................................................... 14
R0 ...................................................................................................... 15
ALPHA ............................................................................................... 15
DELTA ............................................................................................... 15
BETA (Low Temp Only) ..................................................................... 15
Digital Communication Interface ............................................................... 15
Serial Communications ............................................................................. 15
Wiring ................................................................................................... 16
Serial Operation.................................................................................... 16
Interface Commands ................................................................................. 17
Calibrate a Single Probe ........................................................................... 19
Calibrator Characteristics ..................................................................... 20
Stabilization and Accuracy................................................................. 20
Calibration ................................................................................................. 20
Calibration Points ...................................................................................... 20
Calibration Procedure................................................................................ 21
Compute DELTA................................................................................... 21
Compute R0 & ALPHA ......................................................................... 22
Compute BETA (Cold Side Only) ......................................................... 22
Accuracy and Repeatability .................................................................. 23
Maintenance.............................................................................................. 23
Troubleshooting Problems, Possible Causes, and Solutions.................... 23

1
Introduction
The Fluke Calibration 9009 Industrial Dual-Block Calibrator (the Product, calibrator, or instrument) is a
portable instrument/bench-top temperature calibrator. Use the Product to calibrate thermocouple and
RTD temperature probes. The Product is small enough to use in the field, and accurate enough to use
in the lab. With an ambient temperature of -15 °C (5 °F), calibrate over a range of -15 °C to 350 °C
(5 °F to 622 °F). The resolution of the display is 0.1 degrees.
The Product features:
• Two independently controlled temperature blocks
• Rapid heating and cooling
• Interchangeable multiple hole probe sleeves
• Convenient integrated carrying case
• RS-232 interface
Built in programmable features include applicable to both the hot and cold blocks):
• Temperature scan rate control
• Eight Set-point memory
• Adjustable readout in °C or °F
The temperature of each well is accurately controlled by a precision controller. The controller uses a
precision platinum RTD as a sensor and controls the well temperature with a solid-state relay (triac)
driven heater.
The LED front panel (display) continuously shows the current well temperature. Set the temperature
with the control keys to any desired temperature within the specified range. Multiple fault protection
devices ensure user and Product safety and protection.
Note
When one of the temperature blocks is accessed through the front panel, the other
temperature block control panel is not accessible. Always push EXIT to exit the control panel in
use.

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User’s Guide
2
Safety Information
General Safety Information is in the printed Safety Information document that shipped with the Product
or online at www.Flukecal.com.More specific safety information is listed in this manual where
applicable.
A Warning identifies conditions and procedures that are dangerous to the user. A Caution identifies
conditions and procedures that can cause damage to the Product or the device under test (DUT).
WCautions
To avoid possible damage to the Product, follow these guidelines:
• Never introduce any foreign material into the well.
• Do not change the values of the calibration constants from the factory set values. The
correct setting of these parameters is important to the safety and proper operation of
the Product.
• Do not slam the probe stems into the well. This type of action can cause a shock to
the sensor and affect the calibration.
• Always use a ground fault interrupt device.
• The Product is a precision instrument. Although it has optimum durability and
trouble-free operation, it must be handled with care.
• Most probes have handle temperature limits. Be sure that the probe handle
temperature limit is not exceeded in the air above the instrument.
• The instrument and any thermometer probes used with it are sensitive instruments
that can be easily damaged. Always handle these devices with care. Do not allow
them to be dropped, struck, stressed, or overheated.
• Components and heater lifetimes can be shortened by continuous high temperature
operation.
• If a mains supply power fluctuation occurs, immediately turn off the Product. Power
bumps from brown-outs and black-outs can damage the instrument. Wait until the
power has stabilized before re-energizing the Product.
Contact Fluke Calibration
Fluke Corporation operates worldwide. For local contact information, go to our website:
www.flukecal.com
To register your product, view, print, or download the latest manual or manual supplement, go to our
website.
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
[phone]
[email protected]

Industrial Dual-Block Calibrator
Service Information
3
Service Information
Contact an authorized Fluke Calibration Service Center if the Product needs calibration or repair during
the warranty period. Please have Product information such as the purchase date and serial number
ready when you schedule a repair.
Specifications
Complete specifications are located in the printed Safety Information document that came with the
Product.
Quick Start
The subsequent sections detail how to get the Product ready for use.
Unpack the Product
Unpack the Product carefully and inspect it for any damage that may have occurred during shipment. If
there is shipping damage, notify the carrier immediately.
Verify that these components are present:
• 9009 Industrial Dual-Block Calibrator
• 9009 Safety Information
• Two 3102-3 4.76 mm (3/16 in) and two 3102-4 6.35 mm (1/4 in) Inserts
• Power Cord
• Report of Calibration with calibration label
• RS-232 Cable
• Insert Removal Tool
Set Up
To set up the Product:
1. Place the Product on a flat surface with at least 457 mm (18 in) of clearance above the instrument.
2. Plug the power cord into a grounded mains outlet.
Make sure that the nominal voltage corresponds to that indicated on the Product, see the
specifications in the printed Safety Information.
3. Check that the well is clear of any foreign objects, dirt, and grit and carefully insert the probe
sleeves into the wells.
Do not drop the sleeve in the well. Probe sleeve holes should be of the smallest diameter possible
while still allowing the probe to slide in and out easily. Sleeves with various hole sizes are available
from Fluke Calibration. Insert the sleeve with the small tong hole positioned upward.
4. Power on the Product.
Toggle the switch on the power entry module (PEM). The fan blows air through the Product and the
display illuminates after 3 seconds. The calibrator heats or cools to the previously programmed
temperature set-point. The front panel displays indicate the actual calibrator temperature. After a
brief self test, the Product begins normal operation.

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User’s Guide
4
Parts and Controls
This section describes the Product and its parts.
Top Panel (Lid Open)
See Table 1for the top panel parts.
Table 1. Top Panel
Number Description Number Description
AStorage inside the lid for power cord and
insert removal tool. F
O-ring seal keeps Calibrator protected
and sealed from moisture during
transit.
B
Serial Port. A three-conductor jack to
interface the calibrator to a computer or
terminal with serial RS-232
communications.
G
Constant Temperature Block
Assemblies. Calibrate two sensors at
once or use one well for a reference
thermometer. See Constant
Temperature Block for additional
details.
9009
DUAL-BLOCK CALIBRATOR
SET DOWNUP EXIT
SET DOWNUP
HIGH TEMP
DUAL-B LOCK CALIBRATOR
RS-232
EXIT
LOW TEMP
BEFORE CLOSING LID:
REMOVE ALL PROBES FROM
TEMPERATURE WELLS.
COOL TEMPERATUREWELLS DOWN BELOW 100°C (212°F).
RETURN INSERTS, POWER CORD, AND REMOVALTOOL TO
THEIR STORAGE LOCATIONS.
REMOVAL TOOL STORAGE
REMOVALTOOLSTORAGE
9009 DUAL-WELL DRY-BLOCKCALIBRATOR –15°C to 350°C
9009
A
B
C
D
E
F
G
H
I

Industrial Dual-Block Calibrator
Parts and Controls
5
Power Cord (not shown) - The removable power cord inlet plugs into an IEC grounded socket on the
PEM.
Constant Temperature Block
The high temperature Block is made of bronze and the cold temperature Block is made of aluminum.
The Block provides a constant and accurate temperature environment for the sensor under calibration
(see Figure 1). A 0.5 in diameter well may be used for sensors of that size or may be sleeved down
with various sized probe sleeves. Heaters are strategically placed in the block assembly to provide
even heat to the sensor. A high-temperature platinum control RTD is embedded at the base of the
block assembly to sense and control the temperature of the block. The entire assembly is suspended in
an air-cooled chamber thermally isolated from the chassis and electronics.
WWarning
The block vent cover can be very hot due to the fan blowing upward.
Number Description Number Description
C
Hot Display. Both displays not only
shows the set and actual temperatures
but also shows various calibrator
functions, settings, and constants. The
display shows temperatures in units
according to the selected scale °C or °F.
The High Temp and Low Temp displays
are labeled.
H
PEM. The power switch is located on
the PEM. The PEM also houses the
fuse.
D
Controller Keypad. Use the four-button keypad control buttons to set the calibrator
temperature set-point, access and set other operating parameters, and access and set
calibration parameters. Each display has their own button set.
Set the control temperature directly in degrees of the current scale. It can be set to one-
tenth of a degree Celsius or Fahrenheit.
The functions of the buttons are:
SET - Shows the next parameter in the menu stores parameters to the displayed value.
DOWN - Decrements the displayed value of parameters.
UP - Increment the displayed value.
EXIT - Exits a function and skips to the next function. Any changes made to the displayed
value are ignored.
ECold Display IInsert Storage.Store up to four inserts
here.
Table 1. Top Panel (cont.)

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User’s Guide
6
Accessories
The inserts in this section are available for the Product. Inserts may be used with either the hot or cold
temperature wells.
Figure 1. Constant Temperature Block
Table 2. Accessories
Model Description
3102-0 Blank Insert
3102-1 1.6 mm (1/16 in) Insert
3102-2 3.2 mm (1/8 in) Insert
3102-3 4.8 mm (3/16 in) Insert
3102-4 6.4 mm (1/4 in) Insert
3102-5 7.9 mm (5/16 in) Insert
3102-6 9.5 mm (3/8 in) Insert
3102-7 11.1 mm (7/16 in) Insert
3102-8 4.0 mm (5/32 in) Insert
Removable insert sleeves
12.7 mm (1/2 in) O.D. x
101.6 mm (4 in) deep
Calibration Wells

Industrial Dual-Block Calibrator
General Operation
7
General Operation
Change Display Units
The temperature units are factory defaulted to Celsius. To change to Fahrenheit or back to Celsius:
1. Push SET and UP simultaneously. The temperature display changes units.
Or
1. Push SET three times to store the changes.
Un= C
2. Push UP or DOWN to change units.
3. Push SET to store the changes.
Set the Temperature
Temperature Set-point explains how to set the calibrator temperature set-point with the front panel
keys. Briefly, the procedure is:
1. Push SET twice to access the set-point value.
2. Push UP or DOWN to change the set-point value.
3. Push SET to store the new set-point.
4. Push EXIT to return to the temperature display.
When the set-point temperature changes, the heater switches on or off to raise or lower the
temperature. The well temperature gradually changes until it reaches the set-point temperature. The
well can require 5 minutes to 10 minutes to reach the set-point,depending on the span. Another 5
minutes to 10 minutes is required to stabilize within ±0.1 °C of the set-point. Ultimate stability can take
15 minutes to 20 minutes more of stabilization time.
Controller Operation
Use the front panel to monitor the well temperature, set the temperature set-point in degrees C or F,
monitor the heater output power, adjust the controller proportional band, and program the calibration
parameters, operating parameters, and serial interface configuration. Operation of the functions and
parameters are shown in the flowchart in Figure 2. Copy this chart for reference.
Note
When you use one set of control buttons, the other set is disabled.
Well Temperature
The display allows direct viewing of the actual well temperature. This temperature value is what is
normally shown on the display. The temperature units are displayed at the right. For example,
100.0 C Well temperature in degrees Celsius
Push Exit to access the temperature display function from any function.

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User’s Guide
8
Temperature Set-point
Set the temperature set-point to any value within the range and resolution as given in the
specifications. Do not exceed the safe upper temperature limit of any device inserted into the well.
To set the temperature,select the set-point memory and adjust the set-point value.
Programmable Set-points
The controller stores eight set-point temperatures in memory. Quickly recall the set-points to
conveniently set the calibrator to a previously-programmed temperature set-point.
To set the temperature,select the set-point memory first. Push SET to access this function from the
temperature display function. The number of the current set-point memory shows at the left on the
display followed by the current set-point value.
100.0 C Well temperature in degrees Celsius
Push SET Access set-point memory
1 100. Set-point memory is currently set to 1 101 °C
To change the set-point memory push UP or DOWN.
4 300. New set-point memory is 4 300 °C
Push SET to accept the new selection and access the set-point value.
Set-point Value
To adjust the set-point after you select the set-point memory, push SET.
4 200. Set-point 4 value in °C
If the set-point value is correct, push EXIT to show the well temperature. Push SET and then push UP
or DOWN to adjust the set-point value.
220.00 New set-point value
When the controller reaches the desired set-point value,push SET to accept the new value and to
access the temperature scale units selection. If you push EXIT instead of SET, any changes made to
the set-point are ignored.
Push SET Accept new set-point value

Industrial Dual-Block Calibrator
General Operation
9
Figure 2. Controller Operation Flowchart

9009
User’s Guide
10
Temperature Scale Units
See Temperature Scale Units.
Scan
Set and enable the scan rate so that when the set-point is changed the Product heats or cools at a
specified rate (degrees per minute) until it reaches the new set-point. With the scan disabled the
Product heats or cools at the maximum possible rate.
Scan Control
Control the scan with the scan on/off function that appears in the main menu after the set-point
function.
Sc=OFF Scan function off
Push UP or DOWN to toggle the scan on or off.
Sc=On Scan function on
Push SET to accept the present setting and continue.
Scan Rate
The next function in the main menu is the scan rate. Set the scan rate from .1 °C/min to 99.9 °C/min.
The maximum scan rate,however,is limited by the natural heating or cooling rate of the instrument.
This is often <100 °C/min, especially when cooling.
The scan rate function appears in the main menu after the scan control function. The scan rate units
are in degrees C of F per minute, depending on the selected units.
Sr= 10.0 Scan rate in °C/min
Push UP or DOWN to change the scan rate.
Sr= 2.0 New scan rate
Push SET to accept the new scan rate and continue.
Secondary Menu
Access less-used functions with the secondary menu. To access the secondary menu,push SET and
EXIT simultaneously,then release. The first function in the secondary menu is the heater power
display. (See Figure 2.)

Industrial Dual-Block Calibrator
Secondary Menu
11
Heater Power
The temperature controller controls the temperature of the well by pulsing the heater on and off. The
total power applied to the heater is determined by the duty cycle or the ratio of heater on time to the
pulse cycle time. By knowing the amount of heating the user can tell if the calibrator is heating up to the
set-point, cooling down, or controlling at a constant temperature. Monitor the percent heater power to
know how stable the well temperature is. With good control stability the percent heating power should
not fluctuate more than ±1 %within 1 minute.
Note
For the Cold Side, negative numbers indicate the well is being cooled. When the display reads,
-100 P, the well is being cooled at maximum power. When the display reads, 0 P, the well is
neither heating nor cooling. When the display reads, 100 P, the well is being heated at
maximum power.
For the hot side, when the display reads, 0 P, maximum cooling is occurring (no heater power is
applied). The power percentage is never negative on the hot side.
Access the heater power display in the secondary menu. Push SET and EXIT simultaneously and
release. Heater power shows as a percentage of full power.
100.0C Well temperature
Push SET and EXIT Access heater power in secondary menu
SEC Flashes for secondary menu, then shows the heater power
13.0 P Heater power in percent
To exit out of the secondary menu,push and hold EXIT. To continue to the proportional band setting
function,push EXIT momentarily or SET.
Proportional Band
In a proportional controller such as this,heater output power is proportional to the well temperature
over a limited range of temperatures around the set-point. This range of temperature is called the
proportional band. At the bottom of the proportional band the heater output is 100 %. At the top of the
proportional band the heater output is 0 %. Thus,as the temperature rises,heater power is reduced,
which consequently tends to lower the temperature. In this way,the temperature is maintained at a
constant temperature.
The temperature stability of the well and response time depend on the width of the proportional band. If
the band is too wide,the well temperature deviates excessively from the set-point due to varying
external conditions. This is because the power output changes very little with temperature and the
controller cannot respond well to changing conditions or noise in the system. If the proportional band is
too narrow the temperature may swing back and forth because the controller overreacts to temperature
variations. For best control stability,the proportional band must be set for the optimum width.

9009
User’s Guide
12
The proportional band width is set at the factory. The proportional band width is easily adjusted from
the front panel. Set the width to discrete values in degrees C or F,which depends on the selected units.
The proportional band adjustment is accessed within the secondary menu. Push SET and EXIT to
enter the secondary menu and show the heater power. Then push SET to access the proportional
band.
Push SET and EXIT Access heater power in secondary menu
SEC Flashes for secondary menu, then shows the heater power
13.0 P Heater power in percent
Push SET Access proportional band
ProP Flashes ProP and the current setting
4.1 Proportional band setting
To change the proportional band,push UP or DOWN.
10.0 New proportional band setting
To accept and store the new setting push SET. Push EXIT to continue without storing the new value.
Controller Configuration
The controller has several configuration and operating options and calibration parameters which are
programmable through the front panel. To access these, push SET from the secondary menu after the
proportional band. The display shows Config and then PAr for the first of three sets of configuration
parameters- operating parameters, serial interface parameters, and calibration parameters. To select
the menus,push UP and DOWN and then push SET (see Figure 2).
Operating Parameters
The operating parameters menu is indicated by,
PAr Operating parameters menu
Push SET to enter the menu. The operating parameters menu contains the HL (High Limit) parameter
which adjusts the upper set-point temperature. The factory default and maximum are set to 350 C. For
safety, adjust the HL down to restrict the maximum temperature set-point.
HL Flashes HL, then shows the current value
H=350 Current HL setting
Adjust the HL parameter with UP or DOWN.
H=300 New HL setting
Push SET to accept the new temperature limit.

Industrial Dual-Block Calibrator
Controller Configuration
13
Serial Interface Parameters
The serial RS-232 interface parameters menu is indicated by,
SErIAL Serial RS-232 interface parameters menu
The serial interface parameters menu contains parameters which determine the operation of the serial
interface. These controls only apply to instruments fitted with the serial interface. The parameters in the
menu are: BAUD rate, sample period, duplex mode, and linefeed. Push SET to enter the menu.
Serial Interface Setup
Before operation,first set up the serial interface by programming the BAUD rate and other
configuration parameters. Program these parameters within the serial interface menu. The serial
interface parameters menu is outlined in Figure 2.
To enter the serial parameter programming mode:
1. Push EXIT while you push SET,and then release to enter the secondary menu.
2. Push SET repeatedly until the display reads PAr.
3. Push UP until the serial interface menu is indicated with Serial.
Push SET to enter the serial parameter menu. The BAUD rate, the sample rate, the duplex mode, and
the linefeed parameter are in the serial interface parameters menu.
BAUD Rate
The BAUD rate setting determines the serial communications transmission rate.
The BAUD rate parameter is indicated by,
bAUd Flashes bAUd and then displays the setting
2400 b Current BAUD rate
The BAUD rate of serial communications is programmable to 300 BAUD, 600 BAUD, 1200 BAUD,
2400 BAUD (default), 4800 BAUD, or 9600 BAUD. Use UP or DOWN to change the BAUD rate value.
4800 b New BAUD rate
Push SET to set the BAUD rate to the new value or EXIT to abort the operation and skip to the next
parameter in the menu.
Sample Period
The sample period is the time period in seconds between temperature measurements transmitted from
the serial interface. If the sample rate is set to 5, the instrument transmits the current measurement
over the serial interface approximately every 5 seconds. The automatic sampling is disabled with a
sample period of 0.
SPEr Flashes SPEr and then displays the current setting
SP= 1 Current sample period (seconds)
Adjust the value with UP or DOWN and then use SET to store the sample rate to the displayed value.
EXIT does not store the new value.
SP= 60 New sample period

9009
User’s Guide
14
Duplex Mode
The duplex mode can be set to full duplex or half duplex. With full duplex,any commands received by
the calibrator with the serial interface will be immediately echoed or transmitted back to the device of
origin. With half duplex,the commands will be executed but not echoed. The duplex mode parameter is
indicated by,
dUPL Flashes dUPL and then displays the setting
d=FULL Current duplex mode setting
The mode may be changed with UP or DOWN and SET.
d=HALF New duplex mode setting
Linefeed
Linefeed enables (on) or disables (off) transmission of a linefeed character (LF, ASCII 10) after
transmission of any carriage-return.
LF Flashes LF and then displays the setting
LF= On Current linefeed setting
The mode may be changed with UP or DOWN and SET.
LF= OFF New linefeed setting
Calibration Parameters
The controller gives access to a number of the Product calibration constants: R0, ALPHA, DELTA, and
BETA (cold side only). These values are set at the factory and should not be altered. The correct
values are important to the accuracy and proper and safe operation of the Product. Access to these
parameters is available so that if the controller memory fails,the user may restore these values to the
factory settings. Keep a list of these constants and their settings with the manual. These constants and
their settings are on the Report of Calibration that is shipped with the instrument.
WCaution
Do not change the values of the Product calibration constants from the factory-set
values. The correct setting of these parameters is important to the safety and proper
operation of the Product.
The calibration parameters menu is indicated by:
CAL Calibration parameters menu
Push SET five times to enter the menu.

Industrial Dual-Block Calibrator
Digital Communication Interface
15
The calibration parameters R0, ALPHA, DELTA, and BETA (cold side only) characterize the
resistance-temperature relationship of the platinum control sensor. These parameters may be adjusted
by an experienced user to improve the accuracy of the calibrator.
The calibration parameter name flashes on the display and the Product shows the current value. The
value of the parameter may be changed with UP and DOWN. After the Product reaches the desired
value, push SET to set the parameter to the new value. To skip and ignore any changes you have
made, push EXIT.
R0
This probe parameter refers to the resistance of the control probe at 0 °C (32 °F). The value of this
parameter is set at the factory for best instrument accuracy.
ALPHA
This probe parameter refers to the average sensitivity of the probe between 0 °C (32 °F) and 100 °C
(212 °F). The value of this parameter is set at the factory for best instrument accuracy.
DELTA
This probe parameter characterizes the curvature of the resistance-temperature relationship of the
sensor. The value of this parameter is set at the factory for best instrument accuracy.
BETA (Low Temp Only)
This probe parameter characterizes the low temperatures. The value of this parameter is set at the
factory for best instrument accuracy.
Digital Communication Interface
The calibrator can communicate with and can be controlled by other equipment through the digital
serial interface. This allows the user to set the set-point temperature, monitor the temperature, and
access any of the other controller functions, all with remote communications equipment.
Communications commands are summarized in Figure 3.
Serial Communications
The calibrator has an RS-232 serial interface that allows serial digital communications over fairly long
distances. Use a serial interface to access any of the functions, parameters,and settings discussed in
Serial Communications except for the BAUD rate setting. The protocol for serial communications is
eight data bits, one stop bit, no parity, and no flow control.

9009
User’s Guide
16
Wiring
The three-conductor jack for the serial port is located on the top of the Product. Figure 3shows the pin-
out of this connector and suggested cable wiring. The TxD line on one side connects to the RxD line on
the other and vice-versa. To reduce the possibility of electrical interference, shield the serial cable with
low resistance between the connector and the shield.
Figure 3. Serial Cable Wiring
Serial Operation
Once the cable has been attached and the interface set up properly,the controller immediately begins
to transmit temperature readings at the programmed rate. Serial communications uses 8 data bits, one
stop bit, and no parity. The set-point and other commands can be sent through the serial interface to
set the temperature set-point and view or program the various parameters. The interface commands
are discussed in Interface Commands. All commands are ASCII character strings terminated with a
carriage-return character (CR, ASCII 13).
1
2
3
4
5
6
7
8
9
RxD
TxD
GND
RxD
TxD
GND