Kaye HTR-420 User manual

Kaye HTR-420
Dry Block
User Manual
M5450
Rev. A
October 2020

Kaye HTR-420
Dry Block
User Manual
M5450 Rev. A
October 2020
www.kayeinstruments.com
©2020 Amphenol Thermometrics, Inc. All rights reserved.
Technical content subject to change without notice.

Contents
4 Kaye HTR-420 User Manual
Contents
Product Overview...................................................................................................................... 6
1.1 Key Components of the HTR-420 ........................................................................................ 7
1.2 Dry-Block Function ............................................................................................................... 8
1.3 Calibration Modes................................................................................................................. 9
1.4 Contact Kaye Customer Service ........................................................................................ 10
1.5 Calibration and Repair Information..................................................................................... 10
Safety Information ................................................................................................................... 11
Specifications .......................................................................................................................... 14
Getting Started ........................................................................................................................ 15
4.1 Unpack and Inspect............................................................................................................ 15
4.2 Placement........................................................................................................................... 16
4.3 Connect to Main Power ...................................................................................................... 16
4.4 HTR-420 Startup................................................................................................................. 17
4.5 Calibrator Setup.................................................................................................................. 18
Set Screen Brightness .......................................................................................................................18
Set Language Selection.....................................................................................................................18
Set Date and Time .............................................................................................................................19
Set Temperature Units.......................................................................................................................19
Set Decimal Resolution......................................................................................................................19
Switching Modes (Remote Control / Standalone) ..............................................................................19
4.6 Powering Off ....................................................................................................................... 19
4.7 Thermocouple Fixture......................................................................................................... 20
Installation:.........................................................................................................................................20
Usage: ...............................................................................................................................................20
Removal of Thermocouples Holder:...................................................................................................21
Automatic Calibration Mode .................................................................................................... 22
5.1 Starting Automatic Calibration ............................................................................................ 23
Standalone Manual Mode ....................................................................................................... 25
6.1 Standalone Main Screen .................................................................................................... 26
6.2 Toolbars and Icons ............................................................................................................. 27
6.3 Configuration Range Settings............................................................................................. 28
6.4 Test Tasks .......................................................................................................................... 29
Starting Standalone Manual Calibration ................................................................................. 33
Maintenance and Troubleshooting.......................................................................................... 36
8.1 Introduction ......................................................................................................................... 36
8.2 Maintenance ....................................................................................................................... 36
Dry Block ...........................................................................................................................................36
Main Unit............................................................................................................................................36
Dry Block Insert..................................................................................................................................36

Contents
Kaye HTR-420 User Manual 5
8.3 Troubleshooting .................................................................................................................. 37
Appendix ................................................................................................................................. 38
9.1 Warranty ............................................................................................................................. 38
9.2 Return Policy ...................................................................................................................... 39
Customer Support Centers............................................................................................................................. 40

Chapter 1. Product Overview
6 Kaye HTR-420 User Manual
Product Overview
The Kaye HTR-420 is the most advanced high temperature calibrator specifically designed to
address the capacity and flexibility needs for thermal validation. The HTR-420 offers a broad
temperature range from 30°C to 420°C with temperature stability of ±0.010°C and uniformity of
±0.1°C. Performance of calibration and calibration verification can either be performed
automatically via Remote mode or manual through Standard mode.
The Kaye HTR-420 has been designed to interface directly
with all Kaye products (Validator AVS, Validator 2000, IRTD,
ValProbe, and RF ValProbe). The firmware is backward
compatible with all version of Kaye software without need for
software upgrades. This functionality allows the unit to be
utilized for fully automatic calibrations/verifications of
thermocouples, ValProbes or RF ValProbes utilizing your
existing IRTD and applicable Kaye software.
The Kaye HTR-420 also has the flexibility to calibrate other
process or validation sensors in Standalone mode through the
intuitive 7” touchscreen, and a variety of optional inserts.
To maximum accuracy of the control and measurement
during calibration, the HTR-420 includes an external Control
Reference Probe. This probe is used for feedback to the
calibrator controller.
The calibrator is portable, rugged and can be used in a variety
of environments from 0°C to 50°C and humidity ≤80% (non-
condensing).

Chapter 1. Product Overview
Kaye HTR-420 User Manual 7
1.1 Key Components of the HTR-420
1. Dry block
2. Carrying handle
3. Steel housing
4. Touch screen for display and
operation
5. Calibrator exhaust ventilation
6. Connection for external reference
probe
7. USB port for connection to Kaye
hardware
8. Main switch with fuse and main plug
socket
Calibrator, bottom view:
A: Calibrator ventilation Inlet air for housing cooling.
A

Chapter 1. Product Overview
8 Kaye HTR-420 User Manual
1.2 Dry-Block Function
The HTR-420 comes standard with a dry block insert containing sixteen (16) wells for thermocouples
as well as two (2) wells for IRTD, and one (1) well for the Control Reference Probe. Each of the
sixteen (16) thermocouple wells is included with a sleeve which can accommodate upwards of three
(3) thermocouples. The sleeves are optimized to handle 22AWG thermocouples, which are similar
others currently utilized in existing Kaye dry block models.
Kaye also offers additional dry block inserts for calibrating specialty processes or validation probes.
These inserts are easily interchangeable utilizing the supplied insert tool.
Control Reference Probe well.
IRTD insert wells.
Thermocouple insert wells.
Kaye HTR-420 Additional Inserts (units mm)

Chapter 1. Product Overview
Kaye HTR-420 User Manual 9
1.3 Calibration Modes
The HTR-420 was designed to offer flexibility and ease of use. To accommodate these needs
Kaye implemented two main modes or menu’s Remote Control mode and Standalone mode.
Remote Control mode is intended for
Automatic Calibration utilizing Kaye
Validator equipment (Validator 2000,
Validator AVS, ValProbe and RF
ValProbe). In this mode, control of
the HTR-420 and the touchscreen
interface is automatically driven by
the appropriate Kaye software. In the
Kaye software, the user configures
the set points, the stability criteria,
and deviation criteria. The user
simply starts the calibration from the
Kaye software and the control of the
calibration is automated. No
additional interaction with the
touchscreen is required. The HTR-
420 when powered on automatically
boots into the Remote Control
screen.
The Standalonemode is intended
again to offer flexibility by allowing
fully manual configuration of the
HTR-420 to define all different kinds
of parameters from different types of
sensors, ramp and soaks setups
/profiles to address other calibration
needs. For Standalone mode, refer
to Chapter 6 Standalone Manual
Mode and Chapter 7 Starting
Standalone Manual Calibration for
details the options and screen flows
to manually configure the HTR-420.

Chapter 1. Product Overview
10 Kaye HTR-420 User Manual
1.4 Contact Kaye Customer Service
You may contact our North American customer service team at [phone] (FAX: (814) 781-
7969). You may also call our European headquarters in Germany at [phone].
1.5 Calibration and Repair Information
To schedule and send the HTR-420 to Kaye for calibration or repair:
1. Contact the Kaye Service Center in your area to schedule the calibration or repair.
2. Utilize original packing box and carefully pack and secure the HTR-420.
3. Send the HTR-420 to the Service Center.

Chapter 2. Safety Information
Kaye HTR-420 User Manual 11
Safety Information
WARNING! A Warning identifies conditions and procedures that are dangerous to the user.
CAUTION! A Caution identifies conditions and procedures that can cause damage to the
product or equipment under test.
See Table 1: Hazard Signs and Symbols below for list of symbols used in this manual and on the
HTR-420.
Table 1: Hazard Signs and Symbols
Before you install the HTR-420, read through this user manual carefully. If the instructions
contained within are not followed, including the safety guidelines, it could result in danger for
people, the environment, and the device and system it is connected to.
To guarantee that the device operates safely, the operator must act competently and be conscious
of safety issues.

Chapter 2. Safety Information
12 Kaye HTR-420 User Manual
General safety instructions:
In all work, the existing national regulations for accident prevention and safety in the workplace must
be complied with. Any internal regulations of the operator must also be complied with, even if these
are not mentioned in this manual.
Ensure that the complete operating instructions are always available in excellent condition at the
calibrator installation site.
Degree of protection per EN 60529: Ensure that the ambient conditions at the site of use does not
exceed the requirements for the stated protection rating.
Structural safety in accordance with EN 61010-1: The calibrator must be installed in such a way that
the requirements for structural safety are met.
Only use the HTR-420 if it is in perfect condition. Damaged or faulty devices must be checked without
delay and, if necessary, replaced. If problems cannot be cleared, immediately shut down the
calibrator and ensure that it cannot be started up accidentally.
Never leave the calibrator unattended when it is in operation or in the cooling phase.
Do not remove or obliterate type plates or other markings on the device, as otherwise the warranty is
rendered null and void.
Special Safety Instructions:
CAUTION! Risk of Burns!
The calibrator can become very hot when in operation. Touching hot parts can result in serious
burn injuries.
Never touch the metal block, the dry block insert, the external reference control probe or the
test specimen at temperatures above 35 °C.
Allow the calibrator to cool before you remove the test specimen / the external reference
control probe, change the dry block insert or switch off the calibrator.
Thermal fuse! The calibrator is equipped with a temperature fuse that works independently. If there is
an over-temperature in the inside of the housing, the power supply to the heating system is cut off.
The calibrator cannot then be started any more.
After it has cooled, send the calibrator for inspection to Kaye.
The calibrator may not be used in an explosion-endangered atmosphere (ignitable or explosive
atmosphere).
Remove all the easily flammable media from the vicinity of the calibrator.
Ensure that the calibrator cannot encounter easily flammable or explosive media.
Operate the calibrator only in the temperature range permissible for the test sample.
Ensure that the test sample is securely fixed in the calibrator.
Use only suitable adapter sleeves or calibration inserts. When doing so, also ensure that
the structural safety of the calibrator is retained.

Chapter 2. Safety Information
Kaye HTR-420 User Manual 13
IMPORTANT NOTE!
The thermocouple holder may be hot after use. Wait for the HTR-420 to cool to a safe
temperature before touching or removing the holder.
IMPORTANT NOTE!
Keep in mind after transport or storage!
After transport, storage or long periods of non-use, moisture can seep into the heating
elements (magnesium oxide). For drying, the calibrator must be slowly heated up. During
this process, the calibrator has not yet reached the required insulation voltage for
protection class I.
For drying the heating elements, heat the calibrator for at least 15 min to 120 °C.
Further warnings that are specifically relevant to individual operating procedures or activities can
be found at the beginning of the relevant sections of this user manual.

Chapter 3. Specifications
14 Kaye HTR-420 User Manual
Specifications
Dry Block
Temperature Range*
30°C to 420°C
86°F to 780°F
Stability
±0.010°C
±0.018°F
Uniformity
0.1°C
0.18°F
Accuracy
±0.1°C
±0.18°F
Heating / Cooling time
30°C to 100°C
7 min
30°C to 350°C
20 min
350°C to 125°C
350°C to 50°C
20 min
40 min
Block Dimensions
Diameter
60 millimeters
2.36 inches
Depth
170 millimeters
6.69 inches
Display Unit
Display Unit
Brilliant Color (7”) Touchscreen
Viewing angle range 120° to 140°
Brightness 400 cd/m2
Unit °C/ °F/ °K
Resolution
0.1/ 0.01/ 0.001 °C/ °F/ °K
General Data
Interface
Serial to Validator
Ethernet
3 x USB
Dimensions
Width
215 millimeters
8.46 inches
Height
290 millimeters
11.417 inches
Depth
345 millimeters
13. inches
Weight (approximate)
11 kilograms
24 pounds
Power Supply
110–115 VAC ±10%, 60 Hz
230 VAC ±10%, 50 Hz
Power Consumption
Approximately 1000 watts
Safety
OVERVOLTAGE (Installation) CATEGORY II,
Pollution Degree 2 according to IEC-61010-1:2001
* at an ambient temperature of 20°C (68°F)

Chapter 4. Getting Started
Kaye HTR-420 User Manual 15
Getting Started
4.1 Unpack and Inspect
All units have been carefully checked for their operational reliability before shipment.
Immediately after receipt, please check the outer packaging for damages or any signs of
improper handling.
Report any possible damages to the forwarder and your responsible sales representative. In
such a case, state a description of the defect, the type and the serial number of the device.
IMPORTANT NOTE: Report any in-transit damage immediately. Damage reported later shall not
be recognized.
Carefully unpack the unit to prevent any damage.
Check the completeness of the delivery based on the packing slip and/or purchase order.
The X0385 HTR-420 comes with the following components.
Item
Description
Quantity
1
HTR-420
1
2
6 ft. (2 meter) Mains Power Cord (US / EU)
2
3
Dry Block Insert (for up to 48 thermocouples, 2 IRTD, & 2 Reference Probes
1
4
Insert Exchange Tool
1
5
Extruded Sleeves for thermocouples (16)
16
6
External Reference Control Probe
1
7
USB to Serial Communications cable (connection to Kaye hardware)
1
8
Thermocouple Holder
1
9
Calibration Certificate
1
10
User Manual
1
Save the packaging!
The HTR-420 is delivered in special protective packaging.
•Save the packaging for returning the instrument safely to the manufacturer for
recalibration or repair.
•Use the type plate to check if the delivered unit corresponds to your order request.

Chapter 4. Getting Started
16 Kaye HTR-420 User Manual
4.2 Placement
Ensure that the HTR-420 storage and operation conditions described below are met:
•Only suitable for indoor use, do not use outdoors.
•Not suitable for applications with high vibration or possible contamination
•Operate only in the vertical position on an even surface. The surface must be stable,
clean, and dry.
IMPORTANT NOTE: If the operation conditions do not conform to what is described above then
the structural safety and the specified properties of the HTR-420 is not guaranteed.
•Sufficient clearance around the machine; greater than 3 feet (1 meter) in the front and 1.5
feet (0.5 meters) on the sides and back. Sufficient head clearance and free space above
the machine.
•Sufficient ventilation must be ensured.
•Do not operate near flammable materials.
•The ventilation openings must not be blocked or covered.
•The machine must be installed in a manner so that it can be easily switched off at any
time.
4.3 Connect to Main Power
Ensure the following before powering up the HTR-420:
IMPORTANT NOTE: Only connect the HTR-420 to a properly installed and grounded, three-
pronged outlet. If no ground is applied to the HTR-420 it will not heat nor cool.
•Ensure supply voltage is either 115VAC 60Hz or 230 VAC 50Hz.
•Do not use any extension cables or adapter plugs.
•Use only the original power cables supplied by Kaye or approved, like power cable.
IMPORTANT! "KILL" switch!
The plug of the mains connecting cable serves as a "KILL" switch.
Ensure that the plug is always easily accessible and easy to reach.
In an emergency, pull the plug, so that the machine is isolated from the mains.

Chapter 4. Getting Started
Kaye HTR-420 User Manual 17
4.4 HTR-420 Startup
Prior to powering up the HTR-420 perform the following task;
Push the dry block insert down to the stop. Connect the External Reference Probe to the
connector marked “ext Ref” on the front panel and insert into the dry block using the
4.8mm hole sized specifically for the 4.5mm Reference Control Probe.
Power On the HTR-420 by utilizing the Power Switch on the front panel.
Once powered on, the Kaye HTR-420 splash screen appears for approximately thirty seconds,
followed briefly by the model and firmware version, before presenting the Remote Control home
screen.
Since the HTR-420 is predominately used for automatic calibration with Kaye validation
equipment, the unit automatically boots into the Remote Control screen with the following default
settings:
•Mode Remote Control mode
•Function: Dry Block
•Control Temp: External Reference Probe
•Temp Controller OFF
•Language Selection: English
•Date and Time: MM.DD.YYYY and 24h
•Temperature Units: Celsius
•Decimal Places: 0.00

Chapter 4. Getting Started
18 Kaye HTR-420 User Manual
4.5 Calibrator Setup
Refer to the below sections to change the default settings. To access these parameters, click on
the cancel icon in the upper right-hand corner, this brings up a new screen with the following
three options: End Remote Control, Switch Off, and Cancel. Tap on End Remote Control,
which takes you to the Standalone home screen. Next, tap on the tools icon in the upper left-
hand corner to bring up the Calibrator Setup home screen.
Set Screen Brightness
•You can modify the screen brightness (100% default) by tapping on the Display Settings
calculator icon then choose Brightness on the Set Display window.
Enter the desired value (1 through 100) for screen brightness on the numeric keyboard.
Confirm selection by touching the check mark icon to save the change and then the to
return to the Calibrator Set Up window.
Set Language Selection
•Select Language selection from the Calibrator Set Up window by touching the world
icon. The current language is indicated in the information box on the left while all installed
languages can be seen in the selection list on the right.
Select the desired language by tapping the desired language.
Confirm selection by tapping on the check mark icon in the lower right of the screen, which
returns you to the Calibrator Set Up window.

Chapter 4. Getting Started
Kaye HTR-420 User Manual 19
Set Date and Time
•Select Date and Time from the Calibrator Set Up window. Options are available to
change the date and time format.
By tapping the respective field, a window is opened for the input/change.
Make the necessary adjustment then touch the check mark icon to save the change and
then the to return to the Calibrator Set Up window.
Set Temperature Units
•By tapping on the thermometer icon, a temperature unit selection list appears providing
you with the option to choose between Celsius, Fahrenheit, and Kelvin.
Touch the desired temperature unit, which is identified by a checkmark.
Confirm selection by touching the check mark icon to save the change and return you to
the Calibrator Set Up window.
Set Decimal Resolution
•You can define the format of the temperature values in the windows by tapping on the
pencil and ruler icon.
Touch the desired temperature precision, which is identified by a check mark.
Confirm selection by touching the check mark icon to save the change and return you to
the Calibrator Set Up window.
Switching Modes (Remote Control / Standalone)
•To switch to Remote Control mode from the Standalone Main mode simply tap the
Validator icon.
•To switch to Standalone mode from Remote Control mode, click on the cancel X icon in
the upper right-hand corner. A new window displays with the following three options: End
Remote Control, Switch Off, and Cancel. Tap on End Remote Control, to take you to
the Standalone home screen.
4.6 Powering Off
•To power off the unit from Remote Control screen, tap on the cancel Xicon in the upper
right-hand corner then Switch Off. A Switch Off Calibrator screen appears with a
temporary message stating, “system data are saved – please wait” eventually followed by
another message “you can now turn off the calibrator” at which point you can flip the
switch in the front of the unit.
•To power off from Standalone screen, tap on the power icon in the upper right-hand
corner and follow prompts as listed above.
Note: If the temperature value is greater than 40°C then a message appears stating, “calibrator is
reaching safe temperature – please wait.” Once the value drops below 40°C, a new message
appears informing that “you can now turn off the calibrator.”

Chapter 4. Getting Started
20 Kaye HTR-420 User Manual
4.7 Thermocouple Fixture
The HTR-420 comes standard with a Thermocouple (TC) Fixture. The Thermocouple Fixture is
used with the dry block to ensure that all thermocouples are securely held at the full immersion
depth of the dry block inserts to ensure accurate calibrations. The Thermocouple Fixture set
contains thermocouple housing with an integrated metal holder, a cover, a HEX key, three housing
screws, and three knurled head screws to hold the cover in place.
1. Intergrated metal holder
2. HEX key
3. Thermocouple housing
4. Three housing screws
5. Cover
6. Three knurled head screws
Installation:
Let the calibrator cool before installing the TC fixture.
Screw the TC housing onto the dry block thread using the three housing screws. Please do
not overtighten!
Usage:
Place the thermocouple into the dry block,
route it through the accessible notch and
rotate the metal holder to fix the position.
Move to the next accessible notch until all
thermocouples are fixed.
Place the cover on the fixture and secure it
with the three knurled knob screws.
Place the External Reference sensor and
Kaye IRTD in the dry block.