TestEquity 155 Operation manual

Model 155
Temperature Chamber
U.S. Patent Number 10,126,032
Operation and Service Manual
Revision 4.03 and higher Firmware
TestEquity LLC
6100 Condor Drive
Moorpark, CA 93021
Support: 877-512-3457 Toll Free
805-480-0636
Corporate: 800-732-3457
805-498-9933
http://www.testequity.com
Copyright © 2019 TestEquity LLC Rev. 2.04 – January 16, 2019
Portions of this manual are used with permission from Watlow Electric Manufacturing Company, 2014-18

Table of Contents
Chapter 1 – Safety Instructions................................................................................................... 7
Introduction ______________________________________________________________________________7
Installation Safety Notices___________________________________________________________________7
Operation Safety Notices____________________________________________________________________8
Chapter 2 – Installation.............................................................................................................. 11
Unpacking_______________________________________________________________________________11
Preparation For Use ______________________________________________________________________11
Installation Location ______________________________________________________________________11
Condensate Drain ________________________________________________________________________12
Lift-Off and Reversible Chamber Door_______________________________________________________12
Chapter 3 – Operation................................................................................................................ 13
Introduction _____________________________________________________________________________13
Summary of Chamber Operation____________________________________________________________13
Front Panel Switch and Soft Buttons _________________________________________________________13
POWER Switch..................................................................................................................................................13
Power Button .....................................................................................................................................................13
Air Control Button .............................................................................................................................................13
Loading the Chamber _____________________________________________________________________14
Cable Slots and Port Plugs .................................................................................................................................14
Performance Considerations ..............................................................................................................................15
Avoiding Moisture .............................................................................................................................................15
Internal Test Fixtures .........................................................................................................................................15
Chapter 4 – F4T Temperature Controller................................................................................ 17
F4T Menus ______________________________________________________________________________17
Understanding F4T Menus.................................................................................................................................17
Navigating and Understanding the User Interface ______________________________________________18
Home Screen Parameters ...................................................................................................................................19
Front Panel Navigational Buttons ......................................................................................................................19
Main Menu.........................................................................................................................................................19
Static Set Point (Manual Temperature Setting)..................................................................................................20
Navigating the Closed-Loop Set Point Screen...................................................................................................20
Chamber Functions (Output Widget) .................................................................................................................21
Power Button .....................................................................................................................................................21
Air Control Button .............................................................................................................................................21
Temperature Limit Alarm _________________________________________________________________22
How to Set the High and Low Temperature Safety Limits ................................................................................22
Resetting an Out of Limit Condition..................................................................................................................23
Understanding Part Temperature Control (Cascade Control) ____________________________________24
Overview............................................................................................................................................................24
Part Temperature Sensor ....................................................................................................................................25
Part Temperature Control & Air Temperature Control Mode Selection............................................................26
Part Temperature Control Mode ........................................................................................................................26
Part Control Mode During a Profile ...................................................................................................................26
Air Control Mode...............................................................................................................................................27
Air Control Mode During a Profile ....................................................................................................................27
Simple Set Point Enable.....................................................................................................................................27
Data Logging ____________________________________________________________________________28
Overview............................................................................................................................................................28
Data Logging Menu ...........................................................................................................................................28
How to Enable Data Logging.............................................................................................................................29
Transferring Data Log Files ...............................................................................................................................30
Trend Charts ____________________________________________________________________________31
Exporting/Importing Profiles and Configuration via USB _______________________________________32
Transferring Profile Files ...................................................................................................................................32
Transferring Configuration Files........................................................................................................................32
Personalizing the Home Screen _____________________________________________________________33
Changing Loop Operational Parameters______________________________________________________34

Table of Contents
Chapter 5 – Composer Software ............................................................................................... 35
Installation ______________________________________________________________________________35
Overview............................................................................................................................................................35
Downloading the Software and System Requirements ......................................................................................35
Installing the Software .......................................................................................................................................35
Network Configuration ......................................................................................................................................35
Composer Welcome Screen Orientation ______________________________________________________36
Using Composer Software__________________________________________________________________37
System Overview Screen ___________________________________________________________________37
Dashboard ..........................................................................................................................................................37
System................................................................................................................................................................37
Device Menus ....................................................................................................................................................37
Security and Passwords......................................................................................................................................37
Save System Image ............................................................................................................................................39
Import System Image .........................................................................................................................................40
Global Settings...................................................................................................................................................41
Device Details ____________________________________________________________________________41
Device Name......................................................................................................................................................41
Restore Settings From........................................................................................................................................41
Pluggable Flex Modules____________________________________________________________________41
Personalization___________________________________________________________________________42
Data Logging ____________________________________________________________________________42
Trend Charts ____________________________________________________________________________42
Creating and Editing Profiles in Composer Software ___________________________________________43
Profile View - Screen Orientation......................................................................................................................44
Profile Parameters ..............................................................................................................................................45
Step Parameters..................................................................................................................................................45
Opening the Profile View...................................................................................................................................47
Creating Profiles ................................................................................................................................................47
Saving a Profile to a Storage Device..................................................................................................................47
Loading a Profile................................................................................................................................................47
Duplicating a Profile ..........................................................................................................................................48
Deleting Profiles ................................................................................................................................................48
Opening the Step Editor.....................................................................................................................................48
Adding Steps ......................................................................................................................................................48
Inserting Steps....................................................................................................................................................48
Deleting Steps ....................................................................................................................................................49
Password Protect a Profile .................................................................................................................................49
Changing or Removing a Password from a Protected Profile............................................................................49
Chapter 6 – Communications .................................................................................................... 51
Ethernet Parameters ______________________________________________________________________51
Changing Ethernet Parameters ...........................................................................................................................51
Ethernet Parameters and Settings.......................................................................................................................51
Connecting directly to a PC or Ethernet Router.................................................................................................52
Connecting to an Ethernet Switch & Wireless Router .......................................................................................53
Watlow Composer Software Configuration.......................................................................................................53
RS-232 Parameters _______________________________________________________________________54
Changing RS-232 Parameters ............................................................................................................................54
RS-232 Parameters and Settings ........................................................................................................................54
Modbus _________________________________________________________________________________55
Introduction to the Modbus Protocol .................................................................................................................55
F4T and F4 Modbus Mapping............................................................................................................................55
Common Modbus Registers...............................................................................................................................56
F4 Compatibility Mode (Data Map 3)................................................................................................................58
SCPI Programming Mode__________________________________________________________________59

Table of Contents
GPIB and Ethernet Modbus Interface Converters (optional) _____________________________________60
Serial Modbus-to-GPIB Converter (Options 1052 and 0003)............................................................................60
Serial Modbus-to-Ethernet Converter (Option 1056).........................................................................................60
Programming Syntax for the F4T Controller .....................................................................................................61
Programming Syntax for the F4T Controller, Data Map 3 ................................................................................62
Chapter 7 – Frequently Asked Questions................................................................................. 63
Chapter 8 – Specifications.......................................................................................................... 65
Chapter 9 – Maintenance ........................................................................................................... 67
Preventive Maintenance Schedule ___________________________________________________________67
Daily or As Needed............................................................................................................................................67
Every 6 Months ..................................................................................................................................................67
Every 12 Months................................................................................................................................................67
How to clean the chamber interior and exterior .................................................................................................68
How to listen for abnormal noise or vibration ...................................................................................................68
How to inspect the door seal ..............................................................................................................................68
How to clean the condenser ...............................................................................................................................68
How to inspect the electrical/refrigeration compartment ...................................................................................69
How to verify the chamber performance............................................................................................................70
How to verify the calibration .............................................................................................................................71
F4T Controller Calibration_________________________________________________________________72
Equipment Required ..........................................................................................................................................72
Input Setup and Calibration ...............................................................................................................................72
Theory of Operation ______________________________________________________________________73
Overview............................................................................................................................................................74
Heating and Safety Systems...............................................................................................................................74
Refrigeration System..........................................................................................................................................74
Troubleshooting __________________________________________________________________________76
Refrigeration System Charging Instructions __________________________________________________77
R-404A Charge ..................................................................................................................................................77
Replacement Parts ________________________________________________________________________78
Major Electrical Parts_____________________________________________________________________78
Major Refrigeration Parts _________________________________________________________________78
General Parts ____________________________________________________________________________78
Chapter 10 – Warranty .............................................................................................................. 79
Chapter 11 – Drawings............................................................................................................... 81

Chapter 1 – Safety
TestEquity 155 Temperature Chamber Page 7
Chapter 1 – Safety Instructions
Introduction
Follow all CAUTION notices to prevent damage to the chamber or your test sample. Failure to
follow all CAUTION notices may void your warranty. CAUTION may also indicate a
potentially hazardous situation which, if not avoided, may result in minor or moderate personal
injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
The safety alert symbol !precedes a general CAUTION or WARNING statement.
The electrical hazard symbol 2precedes an electric shock hazard CAUTION or WARNING
statement.
Installation Safety Notices
2WARNING: The power cord is equipped with a NEMA 5-15P grounded/polarized plug. To
prevent a shock hazard, DO NOT defeat the ground or polarization feature.
This device MUST be plugged into a properly grounded and polarized outlet.
!WARNING: This is a dual voltage product. Verify that the voltage selector switch on the
rear panel is set for the correct voltage of either 115VAC or 230VAC.
!CAUTION: The minimum clearance you should allow for proper ventilation must be at
least 12" from the rear of the chamber.
!CAUTION: This chamber is designed for operation in a conditioned laboratory
environment. Operation above 30°C (85°F) or below 16°C (60°F) ambient
room temperature is NOT recommended.

Chapter 1 – Safety
Page 8 TestEquity 155 Temperature Chamber
Operation Safety Notices
!CAUTION: When using Part Temperature Control, the Part Sensor must always be
attached to the device under test (DUT). Failure to do this will result in erratic
temperature control. If you do not want to attach the thermocouple to the
DUT, then select “Air Control” on the F4T.
!CAUTION: When using Part Temperature Control, the Part Sensor must never be placed
outside the chamber. Failure to do this will result a thermal runaway, up to the
F4T Limit Alarm High Limit Set Point.
!CAUTION: The F4T Controller has been properly configured by TestEquity to match the
chamber’s system requirements and to perform optimally over a wide range of
operating conditions. Improper modifications to these setup values can result
in erratic performance and unreliable operation. Setup examples in the
Watlow F4T Manuals are NOT applicable to this chamber. Do not attempt to
modify the setup values, unless you thoroughly understand what you are
doing. If there is any doubt, please call TestEquity before proceeding.
!CAUTION: Configuration files are unique to each particular model chamber and must
NEVER be transferred to a different model chamber.
!CAUTION: NEVER select “Factory” in the “Restore Settings From” prompt in the Device
Details menu in Composer Software. This will erase all controller
configuration settings. The chamber will not work if you do this.
!CAUTION: Always verify that the F4T Limit Alarm settings for high and low limits are
set to temperatures that are appropriate for your test sample.
!WARNING: Do NOT put items in the chamber that could burn or explode at high
temperatures. This chamber uses open wire heating elements which generate
surface temperatures over 1000ºF. This is NOT an explosion-proof chamber.
!WARNING: Do NOT put items in the chamber that can emit corrosive vapors or
substances.
!WARNING: This chamber is NOT a curing oven. There are NO provisions for venting
fumes.
!WARNING: The chamber door must remain closed while the chamber is operating. If you
need to open the door while the chamber is operating, wear safety goggles to
prevent the high velocity airflow from blowing particles or objects into your
eyes.
!WARNING: This chamber operates at extreme temperatures. Avoid contact with air,
objects, and surfaces that are hot or cold to prevent severe burns or frostbite.
Protective gloves are recommended.

Chapter 1 – Safety
TestEquity 155 Temperature Chamber Page 9
!CAUTION: If your test sample is energized, it may be capable of raising the workspace
temperature beyond safe limits. This could occur if your test sample exceeds
the live load rating of the chamber or if the chamber’s refrigeration system
fails. You are responsible for providing thermal protection devices to your test
sample.
!CAUTION: To prevent damage to your test sample and the chamber’s compressor, do not
exceed the live load rating of the chamber

Chapter 2 – Installation
TestEquity 155 Temperature Chamber Page 11
Chapter 2 – Installation
Unpacking
Inspect the shipping container for any signs of visible damage. Notify the carrier and TestEquity
immediately if there are signs of shipping damage.
1. Cut the bands that hold the packaging together.
2. Remove the top cover and top foam inserts.
3. Remove the outer box.
4. Carefully lift the chamber off the pallet. This should be done with at least two people.
Preparation For Use
1. Inspect the chamber for signs of shipping damage.
2. Read this entire manual.
3. Select a suitable location to install the chamber.
4. Hand-tighten one of the supplied barbed fittings to the drain connection on the rear of the
chamber. Put a container under the condensate drain. Alternatively, attach the supplied hose
to the barbed fitting and run the hose to a remote container, drain, or condensate pump.
NOTE: Not all applications will result in condensate flowing through the drain.
5. This is a dual voltage product. Verify that the voltage selector switch on the rear panel is set
for the correct voltage of either 115VAC or 230VAC.
6. Attach the power cord to the receptacle on the chamber. Plug the chamber into the power
source as selected in step 5 above.
7. Perform following the procedure “How to verify the chamber performance” in the
Maintenance chapter of this manual to make sure that no damage has occurred in shipment.
Installation Location
The chamber will produce a moderate amount of heat during normal operation. Locate the
chamber in an area with adequate ventilation to prevent excessive heat build-up. The chamber
must be on a solid and level surface that is rated to hold at least 100 pounds.
2WARNING: The power cord is equipped with a grounded/polarized plug. To prevent a
shock hazard, DO NOT defeat the ground or polarization feature. This device
MUST be plugged into a properly grounded and polarized outlet.
!CAUTION: The minimum clearance you should allow for proper ventilation must be at
least 12" from the rear of the chamber.
!CAUTION: This chamber is designed for operation in a conditioned laboratory
environment. Operation above 30°C (85°F) or below 16°C (60°F) ambient
room temperature is NOT recommended.

Chapter 2 – Installation
Page 12 TestEquity 155 Temperature Chamber
Condensate Drain
The condensate drain connection is located on the rear of the chamber. This provides a way to
remove condensate that may accumulate on the evaporator (cooling coil) during temperature
cycling or when the refrigeration system runs to maintain moderate temperatures.
Any time the ambient air is subjected to temperatures below the dew point, moisture will
condense out of the air. The effect is ice or frost during low temperature operation. When the
chamber is heated above 0°C or the cooling system turns off, the ice or frost will turn into water.
The drain fitting accommodates a 1/4-inch male pipe thread. Right angle and straight barbed
adapters are provided so you can easily connect 3/8-inch I.D. flexible tubing to it. The chamber
drain water is not under pressure and is fed by gravity. Therefore, it must empty into a container
or open floor drain.
Under most circumstances, you will not see any water coming out of the drain.
Lift-Off and Reversible Chamber Door
The chamber door will lift off the hinges without the need for any tools. This is useful for
applications required fixtures to be mounted on the door. You could have multiple doors with
different fixtures and easily attach the doors to the chamber.
The chamber door can be mounted to open from the left or right side. The chamber cabinet has
mounting holes on both sides for the hinges and door latch bracket.
To reverse the door opening, you will first need to remove the hinge assemblies
from the chamber and the chamber door. Then, remove the hinges from the
mounting plates. Next, reverse the orientation of the hinge hardware on the
mounting plates. Then, attach the hinge assemblies on the opposite side. Finally,
remove the latch bracket from the chamber and reattach it to the opposite side.
The hinges and latch bracket have slotted holes which enable you to adjust the door
to correctly compress the door seal. After you reverse the door, see “How to inspect
the door seal” in the Maintenance chapter of this manual to make sure the hinges
and door latch are adjusted correctly.

Chapter 3 – Operation
TestEquity 155 Temperature Chamber Page 13
Chapter 3 – Operation
Introduction
The Front Panel Switches control power to the temperature controller and all chamber functions.
The Temperature Controller controls the temperature of the chamber. The Temperature
Controller automatically turns the refrigeration system on or off as required based on the
deviation from temperature set point.
Summary of Chamber Operation
1. Turn the POWER Switch ON.
2. Enter the desired temperature set point on the Temperature Controller.
3. Load your test sample in the chamber.
4. Attach the Part Sensor to your test sample if you want to control or monitor its temperature.
5. Press the Power button on the F4T controller to turn the chamber ON.
Front Panel Switch and Soft Buttons
POWER Switch
The POWER Switch controls power to the entire chamber. The POWER Switch does not
illuminate.
Power Button
The Power button on the F4T Controller turns the chamber ON/OFF. There will be a green check
mark on the Power button when it is ON.
Air Control Button
The control mode can be easily changed from Part Temperature Control or Air Control by
pressing the Air Control key. The default condition is with the controller operating in Part
Temperature Control mode (no green check mark in the Air Control box). See more information
in the section entitled “Part Control vs. Air Temperature Control”.

Chapter 3 – Operation
Page 14 TestEquity 155 Temperature Chamber
Loading the Chamber
!WARNING: Do NOT put items in the chamber that could burn or explode at high
temperatures. This chamber uses open wire heating elements that generate
surface temperatures over 1000ºF. This is NOT an explosion-proof chamber.
!WARNING: Do NOT put items in the chamber that can emit corrosive vapors or
substances.
!WARNING: This chamber is NOT a curing oven. There are NO provisions for venting
fumes.
!WARNING: The chamber door must remain closed while the chamber is operating. If you
need to open the door while the chamber is operating, wear safety goggles to
prevent the high velocity airflow from blowing particles or objects into your
eyes.
!WARNING: This chamber operates at extreme temperatures. Avoid contact with air,
objects, and surfaces that are hot or cold to prevent severe burns or frostbite.
Protective gloves are recommended.
!CAUTION: If your test sample is energized, it may be capable of raising the workspace
temperature beyond safe limits. This could occur if your test sample exceeds
the live load rating of the chamber or if the chamber’s refrigeration system
fails.
!CAUTION: To prevent damage to your test sample and the chamber’s compressor, do not
exceed the live load rating of the chamber.
Live Load Rating
Temp
+23°C
0°C
–10°C
–20°C
Watts
200 W
150 W
100 W
35 W
Cable Slots and Port Plugs
Cable slots on the left and right side provide easy entry and removal of wires and sensors that are
attached between your test sample and equipment outside the chamber without having to remove
the wires. Silicone foam port plugs are provided to seal the cable slot. The port plugs have a gray
silicone moisture-barrier on two sides. The port plug must be inserted with the gray silicone
surfaces facing the inside and outside of the chamber. Port plugs should be considered
expendable and be replaced when they no longer provide a good seal.

Chapter 3 – Operation
TestEquity 155 Temperature Chamber Page 15
Performance Considerations
The performance of all chambers is significantly affected by the characteristics of your test
sample. Factors include size, weight, material, shape, and power dissipation if energized.
The test sample should be placed in the chamber in a manner that allows for air circulation. The
air plenum is located on the back wall of the chamber, where air is sucked in from the left side
and exits from the right side. You should not place the test sample directly on the chamber floor.
It should be placed on the shelf. Multiple test samples should be distributed throughout the
chamber to ensure even airflow and minimize temperature gradients. If necessary, an additional
shelf should be used to evenly distribute the load. Verify that the temperature gradients are
within acceptable limits, by measuring the chamber temperature at strategic points using a
multipoint thermocouple meter or data logger.
You may find that the temperature throughout the chamber is even, but always different from
what the temperature controller indicates. The correct way to adjust what the temperature
controller “displays” compared to what is measured at some point other than the controller’s
sensor is with the “Calibration Offset” parameter.
Avoiding Moisture
Any time the ambient air is subjected to temperatures below the dew point, moisture will
condense out of the air. The effect is ice or frost during low temperature operation. When the
chamber is heated above 0°C, the ice or frost will turn into water.
To avoid moisture condensation, make sure the port plugs are inserted with the gray silicone
surfaces facing the inside and outside of the chamber at all times. Any air gaps between the wires
going through the ports will create a path for moisture migration and thermal losses. Also, avoid
opening the chamber door while the chamber is operating at temperatures below room ambient.
When a low temperature test is completed, warm the chamber to at least room ambient before
opening the chamber door and before removing your test sample.
Internal Test Fixtures
Some applications require internal fixtures to support test samples and provide a convenient
method of connecting wires and sensors. Fixtures must be designed to minimize their impact on
chamber functionality and performance.
Fixtures should be designed for easy removal to permit maintenance and cleaning of the
chamber. The chamber liner should never be drilled or screwed into. This will compromise the
integrity of the liner and permit moisture migration due to condensation into the insulation,
which will eventually impact performance and lead to premature rusting of the outer cabinet.
Fixtures should be constructed of stainless steel. This also applies to all screws and fasteners. All
welds should be passivated. To prevent rust and corrosion, never use iron or mild steel even if it
is painted or plated. Aluminum may be used. However, since the specific heat of aluminum is
double that of steel, it represents a greater load and will have more impact on the chamber
performance.
Make sure that all connectors, wiring, pc boards, and auxiliary components can withstand the
temperature extremes that they will be subjected to. In some cases, these components may not be
able to last after repeated tests and should be considered expendable.

Chapter 4 – Using the F4T Front Panel
TestEquity 155 Temperature Chamber Page 17
Chapter 4 – F4T Temperature Controller
F4T Menus
This chapter is designed to give you a better understanding of the structure and navigation of the
F4T menus as viewed from the front panel.
Understanding F4T Menus
The graphic below illustrates at a high level the structure of the F4T menus.

Chapter 4 – Using the F4T Front Panel
Page 18 TestEquity 155 Temperature Chamber
Navigating and Understanding the User Interface
Home Screen
After powering up the controller a white screen will appear first while initializing. Once the
startup process is complete the Home Screen will be presented as shown below. The image
below shows the Home Screen while a profile is running.
①Controller Status:Indicates alarms and errors if they occur while also showing the
current security level (see “Security” section). Also indicates if Data Logging is enabled and if a
USB thumb drive is plugged into the USB host port. The button shown in the center of the status
bar allows you to view alarm and error messages when pressed.
②Profile Status Bar: Provides visibility and information pertaining to running profiles as
well as access to available profile actions (see “Creating and Editing Profiles” section).
③Vertical Ellipsis: Displays current control mode while also providing access to other
operational parameters such as the Ramp to Set Point, Autotune, PID Settings, and more (see
“Changing Loop Operational Parameters” section).
④Next Page: Home screen has been setup to display multiple pages (loops). The left and
right arrows on each side of the home screen provides navigation from one to the other (see
“Personalizing the Home Screen” section).
⑤Output Widget Bar:Function keys and their output status (ON/OFF).
User
1. Controller
Status
3. Vertical
Ellipsis
4. Next Page
2. Profile
Status
5. Output
Widget

Chapter 4 – Using the F4T Front Panel
TestEquity 155 Temperature Chamber Page 19
Home Screen Parameters
Parameters on the Home screen include:
•Loop name: “Temperature” and “Air Sensor” in the above example.
•Control mode: “Auto” shown in the above example.
•Process Value or PV: Actual Temperature.
•Target Set Point or TSP: The desired set point in a step when running a profile)
•Current Set Point or CSP: The instantaneous set point during a ramp step when running a
profile. May be the same value as the TSP)
•Set Point: The desired Temperature to be maintained by the controller.
•PWR: % Output power levels (throttle) for heat and cool. The orange PWR bar is the heat
throttle. The blue PWR bar is the cool throttle.
•Output Actions: Allows you to monitor the ON/OFF status of controller outputs.
Front Panel Navigational Buttons
Four buttons at the bottom of the F4T are displayed as icons
shown below. The text in this graphic is shown for clarity only
and is not present on the front panel.
•Home: Regardless of the screen currently in view, when Home is pressed you will always
return to the Home screen (shown on the previous page).
•Menu:Pressing the Menu button will provide access to other settings and functions within
the controller.
•Return:Pressing this button will take you back to the previous screen until the top level of
either the Home Screen or the Main Menu is reached.
•Help:Displays information about the controller such as part number and software revision.
Main Menu
The Main Menu provides access to settings and functions within the controller.
•My Menu: Quick access to user assignable functions.
•Profiles:Profiles are added, accessed, and edited from this
menu.
•Operations:Contains access to alarms, control setting,
profile events, inputs, and outputs.
•Settings:Contains access to network settings, global settings
(controller name, date, time, °C/°F display), firmware update
utility, and feature update utility.
•Data Logging: Contains access to settings for data logging.
•Trending: Contains access to settings for trend graphing and the trend graph display.
•File Transfer: Contains access to USB file transfer utilities for Import/Export of
Configuration and Profiles and Export of Data Log files.
•Login (Logout): For password entry, shown with a user already logged in.
•Service: (not shown, appears when display is scrolled down in this pictured configuration).
Provides access to the calibration menu.
•Personalize:The home screen layout is modified in this menu. This has been configured by
TestEquity to only show if a user is logged in with a password.
•Help:(not shown, appears when display is scrolled down in this pictured configuration)
Displays information about the controller such as part number and software revision.

Chapter 4 – Using the F4T Front Panel
Page 20 TestEquity 155 Temperature Chamber
Static Set Point (Manual Temperature Setting)
Set Point is the Temperature setting that you want the chamber to maintain. The F4T Controller
is in Static Set Point Mode when it is not controlling a Profile. The Static Set Point is entered in
the Closed-Loop Set Point screen.
Navigating the Closed-Loop Set Point Screen
To enter the Closed-Loop Set Point screen, press the area in the Set Point (SP) box on the
Home Screen. The Closed-Loop Set Point screen will appear. Values can be added with the
numeric keypad or the or arrow keys.
Pressing the numeric keys will directly enter a value in the Closed-Loop Set Point box. There is
no need to clear the existing value first.
Pressing the or arrow keys will increment or decrement the existing Closed-Loop Set Point
value in 0.01 increments each time the key is pressed.
•Clear will clear all entries in the Closed-Loop Set Point box.
•Bksp (backspace) will clear the last digit in the Closed Loop Set Point box.
•Enter will enter the values in the Closed-Loop Set Point box and return you to the Home
Screen.
•Cancel will return you to the Home Screenwithout changing the Set Point.