Kaye HTR-400 User guide

Amphenol

Advanced Sensors

Kaye HTR 400

User’s Manual

Validation

M4395 Rev. D

May 2014

A

Kaye HTR 400

High Temperature Reference

User’s Manual

M4395 Rev. D
May 2014

mphenol

Advanced Sensors

©2014 Amphenol Thermometrics, Inc. All rights reserved.

Technical content subject to change without notice.

Contents

Chapter 1. Before You Start

1.1 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.2.1 Warnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.2.1 Burn Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2.2 Electrical Hazards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.2.3 Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.2.4 Customer Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Chapter 2. HTR 400 Features

2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Kaye HTR 400 User’s Manual iii

Contents

Chapter 3. Specifications and Environmental Conditions

3.1 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.1.1 Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.1.2 Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.1.3 Stability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.1.4 Well to Well Uniformity (calibrati o n well s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.1.5 Transfer Calibration Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.1.6 Well Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.1.7 Heating Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1.8 Cooling Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1.9 Test Wells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1.10 Standard Calibration Well Inserts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1.11 Resolution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1.12 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1.13 Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1.14 Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1.15 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1.16 Operating Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.1.17 Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.1.18 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.1.19 Fault Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.1.20 Fuses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.2 Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Chapter 4. Quick Start

4.1 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.2 Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.3 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.4 Setting the Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Chapter 5. Parts and Controls

5.1 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.1.1 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.1.2 Constant Temperature Block Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

iv Kaye HTR 400 User’s Manual

Contents

Chapter 6. General Operation

6.1 Calibrator Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.2 Switching Voltage Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.3 Setting the Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.4 Calibrating Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Chapter 7. Controller Operation

7.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

7.2 Well Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

7.3 Reset Cutout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7.4 Temperature Set-point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7.4.1 Programmable Set-points (Set-point Memory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7.4.2 Set-point Value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7.5 Set-point Resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7.6 Ramp and Soak Program Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

7.6.1 Number of Program Set-points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

7.6.2 Set-points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

7.6.3 Program Soak Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

7.6.4 Program Function Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

7.6.5 Program Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

7.7 Secondary Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

7.8 Heating Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

7.9 Proportional Band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.10Cutout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

7.11Controller Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.11.1 Probe Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.11.1aR0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.11.1bALPHA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.11.1cDELTA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.11.2 Operating Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

7.11.2aTemperature Scale Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

7.11.2bCutout Reset Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

7.11.3 Serial Interface Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

7.11.3aBAUD Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

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Contents

7.11.3bSample Period. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

7.11.3cDuplex Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

7.11.3dLinefeed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

7.11.4 Calibration Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

7.11.4aCTO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

7.11.4bCO and CG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

7.11.4cSCO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Chapter 8. Calibration Procedure

8.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

8.2 Calibration Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

8.3 Measuring the Set-point Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

8.4 Computing R0 and ALPHA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

8.5 Calibration Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Chapter 9. Maintenance

9.1 Maintenance Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Chapter 10. Troubleshooting

10.1Troubleshooting Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

10.2Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

10.2.1 EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

10.2.2 Low Voltage Directive (Safety) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

vi Kaye HTR 400 User’s Manual

Chapter 1. Before You Start

Chapter 1. Before You Start

1.1 Symbols Used

Table 1 below lists the symbols used on the instrument or in this manual and the meaning
of each symbol.

Table 1: International Electrical Symbols

Symbol Description

AC (Alternating Current)

AC-DC

Battery

Complies with European Union directives

DC
Double Insulated

Electric Shock

Fuse
PE Ground

Hot Surface (Burn Hazard)

Read the User’s Manual -- Important Information

Kaye HTR 400 User’s Manual 1

Chapter 1. Before You Start

Table 1: International Electrical Symbols (Continued)

Symbol Description

Off

On

Canadian Standards Association

OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per
IEC1010-1 refers to the level of Impulse Withstand Voltage protection
provided. Equipment of OVERVOLTAGE CATEGORY II is energy­consuming equipment to be supplied from the fixed installation. Examples
include household, office, and laboratory appliances.

2 Kaye HTR 400 User’s Manual

Chapter 1. Before You Start

1.2 Safety Information

Use this instrument only as specified in this manual. Otherwise, the protection provided by
the instrument may be impaired. Refer to the safety information in the Warnings and
Cautions sections below.

The following definitions apply to the terms “Warning” and “Caution”.

• “Warning” identifies conditions and actions that may pose hazards to the user.

• “Caution” identifies conditions and actions that may damage the instrument being

used.

1.2.1 Warnings

To avoid possible shock or personal injury, follow the guidelines.

WARNING!

This instrument is intended for indoor use only.

DO NOT use this instrument in environments other than those listed
in the User’s Guide.
Follow all safety guidelines listed in the user’s manual.

Calibration Equipment should only be used by Trained Personnel.

DO NOT use this instrument for any application other than calibration
work. The instrument was designed for temperature calibration. Any
other user of the instrument may cause unknown hazards to the user.

DO NOT turn the instrument upside down with the inserts in place;
the inserts will fall out.

Completely unattended operation is not recommended for safety

reasons.

Overhead clearance is required. DO NOT place the instrument under a
cabinet or other structure. Always leave enough clearance above the
instrument to allow for safe and easy insertion and removal of
probes.

Kaye HTR 400 User’s Manual 3

Chapter 1. Before You Start

1.2 Warnings (cont.)

WARNING! If the instrument is used in a manner not in accordance with the

equipment design, the operation of the dry-well may be impaired or
safety hazards may arise.

Inspect the instrument for damage before each use. DO NOT use the
instrument if it appears damaged or operates abnormally.

If this equipment is used in a manner not specified by the
manufacturer, the protection provided by the equipment may be
impaired.

Before initial use, or after transport, or after storage in humid or
semi-humid environments, or anytime the dry-well has not been
energized for more than 10 days, the instrument needs to be
energized for a “dry-out” period of 2 hours before it can be assumed
to meet all of the safety requirements of the IEC 1010-1. If the product
is wet or has been in a wet environment, take necessary measures to
remove moisture prior to applying power such as storage in a low
humidity temperature chamber operating at 50°C for 4 hour or more.

4 Kaye HTR 400 User’s Manual

Chapter 1. Before You Start

1.2.1 Burn Hazards

WARNING! DO NOT touch the well access surface of the instrument. The

temperature of the well access is the same as the actual display
temperature, e.g., if the instrument is set to 400°C and the display
reads 400°C, the well is at 400°C.

The top sheet metal of the dry-well may exhibit extreme
temperatures for areas close to the well access.

The air over the well can reach temperatures greater that 100°C for
high temperature (400°C and higher) dry-wells.
Note: Probes and inserts may be hot and should only be inserted and
removed from the instrument when the instrument is set at
temperatures less than 50°C. Use extreme care when removing hot
inserts.

DO NOT turn off the instrument at temperatures higher than 100°C.
This could create a hazardous situation. Select a set-point less than
100°C and allow the instrument to cool before turning it off.

DO NOT operate near flammable materials.
Use of this instrument at HIGH TEMPERATURES for extended periods
of time requires caution.

The block vent may be very hot due to the fan blowing across the
heater block of the dry-well.
The high temperatures present in dry-wells designed for operation at
300°C and higher may result in fires and severe burns if safety
precautions are not observed.
DO NOT turn the instrument upside down with the inserts in place;
the inserts will fall out.

Kaye HTR 400 User’s Manual 5

Chapter 1. Before You Start

1.2.2 Electrical Hazards

WARNING! Always replace the power cord with an approved cord of the correct

rating and type.

HIGH VOLTAGE is used in the operation of this equipment. SEVERE
INJURY or DEATH may result if personnel fail to observe safety
precautions.

Before working inside the equipment, turn power off and disconnect
power cord.

These guidelines must be followed to ensure that the safety
mechanisms in this instrument will operate properly. This instrument
must be plugged into a 115 VAC, 60 Hz (230 VAC, 50 Hz optional), AC
only electric outlet.

The power cord of the instrument is equipped with a three-pronged
grounding plug for your protection against electrical shock hazards. It
must be plugged directly into a properly grounded three-prong
receptacle. The receptacle must be installed in accordance with local
codes and ordinances. Consult a qualified electrician. DO NOT use an
extension cord or adapter plug.

If supplied with user accessible fuses, always replace the fuse with
one of the same rating, voltage, and type.

6 Kaye HTR 400 User’s Manual

Chapter 1. Before You Start

1.2.3 Cautions

CAUTION! Component lifetime can be shortened by continuous high

temperature operation.

Most probes have handle temperature limits. Be sure that the probe
handle temperature limit is not exceeded in the air above the
instrument.

DO NOT use fluids to clean out the well.
Never introduce any foreign material into the probe hole of the insert.
Fluids, etc. can leak into the instrument causing damage.

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 calibrator.

DO NOT slam the probe stems in to the well. This type of action can
cause a shock to the sensor and affect the calibration.

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.

The Factory Reset Sequence (see Chapter 10, Troubleshooting) should
be performed only by authorized personnel if no other action is
successful in correcting a malfunction. You must have a copy of the
most recent Report of Calibration to restore the calibration
parameters.

Kaye HTR 400 User’s Manual 7

Chapter 1. Before You Start

1.2.3 Cautions (cont.)

CAUTION! DO NOT operate this instrument in an excessively wet, oily, dusty, or

dirty environment. Always keep the well and inserts clean and clear of
foreign material.

The instrument is a precision instrument. Although it has been
designed for optimum durability and trouble free operation, it must
be handled with care. Always carry the instrument in an upright
position to prevent the probe sleeves from dropping out. The
convenient fold-up handle allows one hand carrying.

If a mains supply power fluctuation occurs, immediately turn off the
instrument. Power bumps from brown-outs could damage the
instrument. Wait until the power has stabilized before re-energizing
the instrument.

Always operate this instrument at room temperature between 41°F
and 122°F (5°C to 50°C). Allow sufficient air circulation by leaving at
least 10 inches (25.4 cm) of clearance around the instrument.

1.2.4 Customer Service Information

When contacting Kaye Customer Service, please have the following information
available:

• Model Number

• Serial Number

• Voltage

8 Kaye HTR 400 User’s Manual

Chapter 2. HTR 400 Features

Chapter 2. HTR 400 Features

2.1 Introduction

The Kaye HTR 400 High Temperature Reference provides a stable, portable temperature
reference for performing thermocouple and RTD calibration. The HTR 400 operates over
the range of 50°C to 400°C (122°F to 752°F).

The HTR 400 is most commonly used with the Kaye Intelligent RTD (IRTD) probe and
Validator system to make up a complete validation system. It has the ability to rapidly
heat, making it an ideal instrument for performing multiple-point calibrations for a variety
of processes, such as incubators and steam sterilizers.

The HTR 400 calibrator has ten wells. For calibrating thermocouples, there are inserts that
go into eight of the wells to reduce stem conduction errors, thereby providing maximum
accuracy and stability. To calibrate RTDs, there are special inserts available through
Amphenol Advanced Sensors. The eight calibration wells are drilled at a 0.354" (9mm)
diameter, and with inserts are able to hold up to three Kaye Type T 22 gauge PTFE or
Kapton thermocouples per well for a total of 24 sensors. With inserts, a single RTD can fit
into each well. The two reference wells are 0.265" (6.7mm) in diameter to accommodate
Kaye Intelligent RTD probes.

The temperature of the wells is accurately controlled by an internal analog/digital
temperature controller. The temperature controller uses a precision platinum RTD as a
sensor, and controls the well temperature with a solid state relay (triac) driven heater. On
the front panel of the instrument is an LED display that continuously shows the current
well temperature.

Kaye HTR 400 User’s Manual 9

Chapter 2. HTR 400 Features

2.1 Introduction (cont.)

The well temperature can be set to any temperature within the specified range by usin g the
four control buttons located on the instrument's front panel. The HTR 400 calibrator's
multiple fault protection devices ensure user and instrument safety protection.

The Kaye Validator automatically performs the sensor calibration, including programming
the set-point temperatures at the HTR 400. If you are using the HTR 400 as a standalone
instrument, the temperatures can be manually set to any temperature within the specified
range by using the four control buttons located on the front panel.

These dry-well calibrators are designed for portability, moderate cost, and ease of
operation. With proper use they should provide continued accurate calibration of
temperature sensors and devices. The user should be familiar with the safety guidelines
and operating procedures of the calibrator as described in this User’s Guide.

10 Kaye HTR 400 User’s Manual

Chapter 3. Specifications and Environmental Conditions

Chapter 3. Specifications and Environmental

Conditions

3.1 Specifications

The specifications for this instrument appear below. Accuracy specifications are
applicable for a one-year calibration interval.

In line with normal prudent metrology practices, a short-cycle interval of six months is
recommended for new instruments during the first year.

3.1.1 Range

50°C to 400°C (122°F to 752°F) at 25°C (77°F)

3.1.2 Accuracy

±0.2°C (0.36°F) to 300°C; ±0.3°C (0.54°F) at 400°C

3.1.3 Stability

0.02°C (0.036°F) to 300°C; ±0.05°C (0.09°F) at 400°C

3.1.4 Well to Well Uniformity (calibration wells)

±0.05°C (0.09°F)

3.1.5 Transfer Calibration Accuracy

of Thermocouples with Inserts to IRTD Probe (Excluding reference probe uncertainty)
±0.1°C from 50°C to 150°C
±0.125°C from 150°C to 400°C

3.1.6 Well Depth

6.1" (155 mm)

Kaye HTR 400 User’s Manual 11

Chapter 3. Specifications and Environmental Conditions

3.1.7 Heating Time

5 minutes: 25°C to 100°C; 25 minutes: 25°C to 350°C

3.1.8 Cooling Time

85 minutes: 350°C to 50°C; 45 minutes: 125°C to 50°C

3.1.9 Test Wells

Two 6.7 mm (0.265") dia., eight 9 mm (0.354") dia.

3.1.10 Standard Calibration Well Inserts

Eight removable
Accommodates up to three 22 gauge thermocouples

3.1.11 Resolution

0.01°

3.1.12 Display

LED, °C or °F, us er selectable

3.1.13 Size

13.5" H x 7.8" W x 12.5" D (343 x 198 x 317 mm)

3.1.14 Weight

30 lb. (13.6 kg)

3.1.15 Power

115 VAC (±10%), 10 A, 50/60 Hz, 230 VAC (±10%), 5 A, 50/60 Hz, 700 watts

3.1.16 Operating Range

5–50°C (41–122°F)

12 Kaye HTR 400 User’s Manual

Chapter 3. Specifications and Environmental Conditions

3.1.17 Controller

Hybrid analog/digital controller with data retention

3.1.18 Safety

OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1

3.1.19 Fault Protection

Sensor burnout protection, over-temperature cutout, and electrical fuses

3.1.20 Fuses

115V - 10A F, 250 V
230V - 5A F, 250 V

3.2 Environmental Conditions

Although these instruments have been designed for optimum durability and trouble-free
operation, they must be handled with care. The instrument should not be operated in an
excessively dusty or dirty environment. Maintenance and cleaning recommendations can
be found in Chapter 9, Maintenance.

The instrument operates safely under the following conditions:

• temperature range 5 - 50°C (41 - 122°F)

• ambient relative humidity 15 - 50%

• pressure - 75kPa - 106kPa

• mains voltage within ±10% of nominal

• vibrations in the calibration environment should be minimized

• altitude less than 2,000 meters

• indoor use only

The Product can show some control sensitivity to moderate or severe electromagnetic
fields or conducted interference of certain frequencies. In the presence of radiated EM
disturbances, with frequencies of 250 MHz to 400 MHz and with amplitude >1 V/m to a
maximum of 3 V/m, add 0.0025 °C to the stability specification. Stability is not
guaranteed if amplitude is >3 V/m. When subject to conducted disturbances of 8 MHz to
80 MHz, and amplitude >3 V, add 0.005 °C to the stability specification.

Kaye HTR 400 User’s Manual 13

Chapter 3. Specifications and Environmental Conditions

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14 Kaye HTR 400 User’s Manual

Chapter 4. Quick Start

Chapter 4. Quick Start

4.1 Unpacking

Unpack the dry-well carefully and inspect it for any damage that may ha ve occurred
during shipment. If there is shipping damage, notify the carrier immediately.

Verify that the following components are present:

• HTR 400

• Thermocouple Insert, Part number J6520, 8 ea.

• Power Cord

• User's Guide

• Certificate of Calibration

• Serial Cable

4.2 Setup

Place the calibrator on a flat surface with at least 10 inches of free space around the
instrument. Overhead clearance is required. DO NOT place under a flammable structure
or cabinet. Plug the power cord into a grounded mains outlet. Observe that the nominal
voltage corresponds to that indicated on the back of the calibrator.

Turn on the power to the calibrator by toggling the switch on the power entry module. The
fan should begin blowing air through the instrument and the controller display should
illuminate after 3 seconds. After a brief self-test, the controller should begin normal
operation. If the instrument fails to operate, check the power connection.

The display begins to show the well temperature and the well heater starts operating to
bring the temperature of the well to the set-point temperature.

Kaye HTR 400 User’s Manual 15

Chapter 4. Quick Start

4.3 Power

Plug the dry-well power cord into a mains outlet of the proper voltage, frequency, and
current capability . See Chapter 3, Specifications and Envir onmental Conditions, for power
details. Turn the dry-well on using the rear panel “POWER” switch. The dry-well turns on
and begins to heat to the previously programmed temperature set-point. The front panel
LED display indicates the actual dry-well temperature.

This instrument is field switchable between 115 VAC and 230 VAC. Refer to Switching to
230 V Operation (page 6-21), for information on switching the voltage.

4.4 Setting the Temperature

When you calibrate thermocouples using the HTR 400 and the V alidator , the set-points are
defined as part of the calibration procedure and automatically downloaded from the
Validator to the HTR 400. If you are using the HTR 400 as a standalone instrument,
Chapter 7 (page 7-28) explains in detail how to set the temperature set-point on the
calibrator using the front panel keys. The procedure is summarized here.

1. Press

2. Press

3. Press

4. Press

SET twice to access the set-point value.
UP or DOWN to change the set-point value.
SET to program in the new set-point.
EXIT to return to the temperature display.

When the set-point temperature is changed, the controller switches the well heater on or
off to raise or lower the temperature. The displayed well temperature gradually changes
until it reaches the set-point temperature. The well may require 5 to 60 minutes to reach
the set-point depending on the span. Another 5 to 10 minutes is required to settle within
1°C of the set-point and 20 to 30 minutes to stabilize with ±0.02°C of the set-point.
Ultimate stability may take 1 hour or more of stabilization time.

16 Kaye HTR 400 User’s Manual

Chapter 5. Parts and Controls

Chapter 5. Parts and Controls

5.1 Rear Panel

The user should become familiar with the dry-well calibrator and its parts. See Figure 1
below for a view of the rear panel.

Power Cord - At the rear of the calibrator is the removable power cord that plugs into a
standard 115 VAC (230 VAC optional) grounded socket.

Power Switch - The power switch is located on the left corner of the rear panel.
Serial Port - This D-9 connector is for interfacing the calibrator to a computer or terminal

with serial RS-232 communications.
Fuse Holders - At the rear of the calibrator are two user accessible fuse holders.

Figure 1: HTR 400 Back Panel

Kaye HTR 400 User’s Manual 17

Chapter 5. Parts and Controls

5.1.1 Front Panel

See Figure 2 below.

Controller Display - The digital display is an important part of the temperature controll er
because it not only displays set and actual temperatures, but also various calibrator
functions, settings, and constants. The display shows temperatures in units according to
the selected scale °C or °F.

Controller Keypad - The four button keypad allows easy setting of the set-point
temperature. The control buttons (
calibrator temperature set-point, access and set other operating parameters, and access and
set calibration parameters.

Setting the control temperature is done directly in degrees of the current scale. It can be set
to one-hundredth of a degree Celsius.

SET, DOWN, UP, and EXIT) are used to set the

Figure 2: HTR 400 Front Panel

18 Kaye HTR 400 User’s Manual

Chapter 5. Parts and Controls

Front Panel (cont.)

The functions of the buttons are as follows:

SET – Used to display the next parameter in the menu and to set parameters to the

displayed value.

DOWN – Used to decrement the displayed value of parameters.

UP – Used to increment the displayed value.

EXIT – Used to exit from a menu. When EXIT is pressed, any changes made to the

displayed value are ignored.

Control Indicator - The Control Indicator is a two color light emitting diode. This
indicator lets the user visually see the ratio of heating to cooling. When the indicator is
constant red, the well is heating, and when it is constant green, the well is cooling. When
the indicator is flashing, then the temperature is being held constant.

Kaye HTR 400 User’s Manual 19

Chapter 5. Parts and Controls

6.7 mm (0.265")

6.7 mm (0.265")

9 mm
(0.354")

9 mm
(0.354")

FUSE

5.1.2 Constant Temperature Block Assembly

The constant temperature block, shown in Figure 3 below, is made of aluminum and
provides a relatively constant and accurate temperature environment in which the sensors
that are to be calibrated are inserted. Attached to the block are Peltier thermoelectric
modules which heat or cool the block to maintain a constant temperature. A high-quality
platinum RTD is imbedded in the block to sense the temperature and provide feedback to
the temperature controller.

Figure 3: Temperature Block

20 Kaye HTR 400 User’s Manual

Chapter 6. General Operation

Chapter 6. General Operation

6.1 Calibrator Setup

Place the calibrator on a flat surface with at least 10 inches of free space around the
instrument. DO NOT place under a flammable structure or cabinet. Plug the power cord
into a grounded mains outlet. Observe that the nominal voltage corresponds to that
indicated on the back of the calibrator.

Gently insert the thermocouple probe sleeves into the well. Sleeves of various sizes are
available from the manufacturer. The well must be clear of any foreign objects, dirt, and
grit before the sleeve is inserted. The sleeve is inserted with the two small tong holes
positioned upward.

Turn on the power to the calibrator by toggling the switch at the rear of the instrument to
the “l” (on) position. The fan begins circulating air through the instrument. After a brief
self test, the controller should begin normal operation, showing the well temperature. The
block heats or cools until it reaches the programmed set-point.

6.2 Switching Voltage Operation

The Voltage of the instrument cannot be changed by the customer/ user - but the instru ment
needs to be returned to the Service Center for voltage change.

Kaye HTR 400 User’s Manual 21

Chapter 6. General Operation

6.3 Setting the Temperature

Chapter 7 (page 28) explains in detail how to set the temperature set-point on the
calibrator using the front panel keys. The procedure is summarized here.

1. Press

2. Press

3. Press

4. Press

SET twice to access the set-point value.
UP or DOWN to change the set-point value.
SET to program in the new set-point.
EXIT to return to the temperature display.

When the set-point temperature is changed, the controller switches the well heater on or
off to raise or lower the temperature. The cycle indicator, a two color LED, indicates on
(red and heating) or off (green and cooling). The displayed well temperature gradually
changes until it reaches the set-point temperature.

The well may require 5 to 80 minutes to reach the set-point, depending on the span.
Another 5 to 10 minutes is required to settle within 1°C of the set-point and 20 to 30
minutes to stabilize with ±0.02°C of the set-point. Ultimate stability may take 1 hour or
more of stabilization time.

22 Kaye HTR 400 User’s Manual

Chapter 6. General Operation

6.4 Calibrating Sensors

Sensor calibration is performed prior to carrying out a validation test to correct raw
temperature readings to a traceable temperature measurement standard. Due to the HTR
400’s range of temperature and rapid heating and cooling capabilities, the instrument can
be used to provide calibrations for a variety of validation processes. To provide maximum
accuracy, a two-point calibration should be performed close to the operating temperature
of the process.

The Kaye Validator automatically downloads the calibration set-points defined in your
setup to the HTR 400 and controls the entire sensor calibration procedure.

Before you begin the calibration process:

• Place the Validator in a location with stable and even temperature, not exposed to any

local heat sources (i.e., close to a sterilizer, an open door causing a draft, etc.).

• To provide maximum accuracy during the calibration process, power up the Validator

and let it run for approximately 30 minutes in the operating environment where
calibration is to be performed in order for the Validator to acclimate to the ambient
temperature.

• Since transient environmental temperature causes thermal measurements to change,

Amphenol Advanced Sensors specifies that the Validator system be allowed to
stabilize for at least 30 minutes for every 10°C change in temperature. For example, if
you move the Validator from a 25°C environment to a 40°C degree environment, it
should be allowed to run for 45 minutes before use.)

• Place the thermocouples and IRTD into the HTR 400 making sure to use the well

inserts for the thermocouples. The HTR 400 provides the stable temperature required
for sensor calibration. The IRTD, a self-contained precision measurement standard
that provides data directly to the Validator, accurately measures the temperature of the
HTR 400 The IRTD provides a traceable standard that is used to correct the
temperature readings of your thermocouples.

For more detailed information on the hardware connections and the sensor calibration
process, refer to the Validator User’s Guide.

Kaye HTR 400 User’s Manual 23

Chapter 6. General Operation

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24 Kaye HTR 400 User’s Manual

Chapter 7. Controller Operation

Well Temperature in Degrees Celsius

Chapter 7. Controller Operation

7.1 Introduction

This chapter discusses in detail how to operate the dry-well temperature controller using
the front panel. Using the front panel key-switches and LED display, the user may monitor
the well temperature, set the temperature set-point in degrees C or F, monitor the heater
output power, adjust the controller proportional band, set the cutout set-point, and program
the probe calibration parameters, operating parameters, serial interface configuration, and
controller calibration parameters. Operations of the functions are summarized in Figure 4
on page 27.

In the following discussion a solid box around the word
indicates the panel button while the dotted box indicates the display reading. Explanation
of the button or display reading are to the right of each button or display value.

SET, UP, EXIT or DOWN

7.2 Well Temperature

The digital LED display on the front panel allows direct viewing of the actual well
temperature. This temperature value is what is normally shown on the display.

The units, C or F, of the temperature value are displayed at the right. For example,

The temperature display function may be accessed from other functions by pressing the

EXIT button.

Kaye HTR 400 User’s Manual 25

Chapter 7. Controller Operation

Indicates Cutout Condition

Access Cutout Reset Function

Cutout Reset Function

Reset Cutout

7.3 Reset Cutout

The cutout has two modes, automatic reset and manual reset (see page 40) that determine
how the cutout resets, allowing the instrument to heat up again. When in automatic mode,
the cutout resets itself as soon as the temperature is lowered below the cutout set-point.
With manual reset mode, the cutout must be reset by the operator after the temperature
falls below the set-point.

If the over-temperature cutout has been triggered, the temperature display alternately
flashes the temperature and cutout.

The message continues to flash until the temperature is reduced and the cutout is reset.

When the cutout is active and the cutout mode is set to manual (“reset”), the display
flashes “Cut-out” until the user resets the cutout. To access the reset cutout function, press

SET button.

the

The display indicates the reset function.

Press SET once more to reset the cutout.

This switches the display to the set temperature function. To return to displaying the
temperature, press the

EXIT button. If the cutout is still in the over-temperature fault

condition, the display continues to flash “Cut-out”. The well temperature must drop a few
degrees below the cutout set-point before the cutout can be reset.

26 Kaye HTR 400 User’s Manual

Chapter 7. Controller Operation

Figure 4: Controller Function Flowchart

Kaye HTR 400 User’s Manual 27

Chapter 7. Controller Operation

Well Temperature in Degrees Celsius

Access Set-point Memory

Set-point Memory 1, 20.0°C
Currently Used

To change the set-point memory, press UP or DOWN.

New Set-point Memory 3, 400°C

Press SET to accept the new selection and access the se
point value.

Accept Selected Set-point Memory

7.4 Temperature Set-point

The temperature set-point can be set to any value within the range and with resolution as
given in the specifications. Be careful not to exceed the safe upper temperature limit of
any device inserted into the well. The safety cutout must be adjusted to prevent this
occurrence.

Setting the temperature involves two steps: (1) selecting the set-point memory and (2)
adjusting the set-point value.

7.4.1 Programmable Set-points (Set-point Memory)

The controller stores 8 set-point temperatures in memory. The set-points can be quickly
recalled to conveniently set the calibrator to a previously programmed temperature set­point.

To set the temperature, select the set-point memory and then adjust the set-point value.
This function is accessed from the temperature display function by pressing
number of the set-point memory currently being used is shown at the left on the display,
followed by the current set-point value.

SET. The

28 Kaye HTR 400 User’s Manual

Chapter 7. Controller Operation

Set-point 3 Value in °C

New Set-point Value

Accept New Set-point Value

7.4.2 Set-point Value

The set-point value may be adjusted after selecting the set-point memory and pressing

SET. The set-point value is displayed with the units, C or F, at the left.

If the set-point value does not need to be changed, press
well temperature. Press

UP or DOWN to adjust the set-point value.

When the desired set-point value is reached, press
the temperature scale units selection. If

EXIT is pressed, then any changes made to the set-

EXIT to resume displaying the

SET to accept the new value and access

point are ignored.

7.5 Set-point Resistance

The set-point resistance is the resistance the instrument is trying to make the control
sensor achieve and is calculated in the firmware using the set-point temperature. This
value is not directly adjustable, but is recalculated when the set-point temperature is
changed. The set-point resistance is used to perform a calibration adjustment using the
Callendar-Van Dusen R versus T curve fit (see Chapter 8, Calibration Procedure). The
instrument must be at temperature and stable prior to taking the set-point resistance
reading.

To display the set-point resistance, press
temperature is displayed. When the
is again displayed.

SET and DOWN simultaneously when the

SET and DOWN buttons are released, the temperature

Kaye HTR 400 User’s Manual 29

Chapter 7. Controller Operation

Well Temperature

Access Program Menu

Program Menu

Enter Program Menu

Number of Program Set-points

Use the UP or DOWN buttons to change the number from

2 to 8.

New Number of Program Set-poin

Save New Setting

7.6 Ramp and Soak Program Menu

The ramp and soak program feature allows the user to program a number of set-points and
have the dry-well automatically cycle between the temperatures, holding at each for a
determined length of time. The user can select one of four different cycle functions.

The program parameter menu is accessed by pressing

Press

SET to enter the program menu.

SET and then UP.

7.6.1 Number of Program Set-points

The first parameter in the program menu is the number of set-points to cycle through. Up
to 8 set-points can be used in a ramp and soak program.

Press

SET to continue. Pressing EXIT causes any changes made to the parameter to be

ignored.

30 Kaye HTR 400 User’s Manual

Chapter 7. Controller Operation

First Set-point

Use the UP or DOWN buttons to select any of the 8 set-

points.

Third Set-point

Press SET to change the set-point.

Set-point Value

Use UP and DOWN to change the set-point value.

New Set-point Value

Continue to Next Menu Function

Soak Time in Minutes

Use the UP or DOWN buttons to change the time.

New Soak Time

Press SET to continue.

Save New Setting

7.6.2 Set-points

The next parameters are the program set-points.

Press

SET to save the new set-point value.

The other set-points can also be set in the same manner. Once the set-points are
programmed as desired, press

EXIT to continue.

7.6.3 Program Soak Time

The next parameter in the program menu is the soak time. This is the time, in minutes, that
each of the program set-points is maintained after settling before proceeding to the next
set-point. The duration is counted from the time the temperature settles to within a
specified stability.

Kaye HTR 400 User’s Manual 31

Chapter 7. Controller Operation

Program Mode

Use the UP or DOWN buttons to change the mode.

New Mode

Press SET to continue.

Save New Setting

7.6.4 Program Function Mode

The next parameter is the program function or cycle mode. There are four possible modes.
They determine whether the program scans up (from set-point 1 to n) only or both up and
down (from set-point 1 to n and back from set-point n to 1), and also whether the program
stops after one cycle or repeat the cycle indefinitely.

Table 2 below shows the action of each of the four program mode settings.

Table 2: Actions for Program Mode Settings

Function Action

1 up-stop
2 up-down-stop
3 up-repeat
4 up-down-repeat

32 Kaye HTR 400 User’s Manual

Chapter 7. Controller Operation

Program Presently Off

Use the UP or DOWN buttons to change the status.

Start Cycle From Beginning

Press SET to activate the new program control command
and return to the temperature display.

Activate New Command

7.6.5 Program Control

The final parameter in the program menu is the control parameter. The control options are
to start the program from the beginning, continue the program from where it was when it
was stopped, or stop the program.

7.7 Secondary Menu

Functions which are used less often are accessed within the secondary menu.The
secondary menu is accessed by pressing
The first function in the secondary menu is the heater power display.

SET and EXIT simultaneously and then releasing.

Kaye HTR 400 User’s Manual 33

Chapter 7. Controller Operation

Well Temperature

Access Heater Power

Heater Power In Percent

in Secondary Menu

7.8 Heating Power

The temperature controller controls the temperature of the well by heating or cooling the
well with the thermoelectric modules. The amount of heating or cooling power depend s on
the temperature set-point of the well. This heating (or cooling) power value may be
estimated by watching the red/green control indicator light or read directly from the digital
display. 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. Monitoring the
percent heater power allows the user to determine the stability of the well temperature.
With good control stability, the percent heating power should not fluctuate more than ±1%
within one minute.

The heater power display is accessed in the secondary menu. Press

SET and EXIT

simultaneously and release. The heater power is displayed as a percentage of full power.

To exit out of the secondary menu, press
setting function, press

SET.

EXIT. To continue on to the proportional band

34 Kaye HTR 400 User’s Manual

Chapter 7. Controller Operation

Proportional Band

Proportional Band

too Wide

too Narrow

Optimum Proportional Band

7.9 Proportional Band

In a proportional controller such as this, the 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
heating is 100%. At the top of the proportional band, the cooling is 100%. Thus as the
temperature rises the heater power is reduced, which consequently tends to lower the
temperature back down. In this way the temperature is maintained at a fairly constant
temperature.

The temperature stability of the well and response time depend on the width of the
proportional band (see Figure 5 below). 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
very 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.

Kaye HTR 400 User’s Manual 35

Figure 5: Well Temperature Fluctuation at

Various Proportional Band Settings

Chapter 7. Controller Operation

Access Heater Power

Heater Power In Percent

Access Proportional Band

Proportional Band Setting

To change the proportional band press UP or DOWN.

New Proportional Band Setting

in Secondary Menu

Accept the New

Proportional Band Setting

7.9 Proportional Band (cont.)

The proportional band width is set at the factory and recorded on the Report of
Calibration. The proportional band width may be altered by users if they desire to
optimize the control characteristics for a particular application.

The proportional band width is easily adjusted from the front panel. The width may be set
to discrete values in degrees C or F depending on the selected units.

The proportional band adjustment is accessed within the secondary menu. Press

EXIT to enter the secondary menu and show the heater power. Then press SET to access

the proportional band.

To accept the new setting and access the cutout set-point, press
the secondary menu, ignoring any changes just made to the proportional band value.

SET. Pressing EXIT exits

SET and

36 Kaye HTR 400 User’s Manual

Chapter 7. Controller Operation

Access Heater Power

In Secondary Menu

Heater Power in Percent

Access Proportional Band

Proportional Band Setting

Access Cutout Set-point

7.10 Cutout

As a protection against software or hardware fault or user error, the calibrator is equipped
with an adjustable cutout device that shuts off power to the heater if the well temperature
exceeds a set value. This protects the instrument and probes from excessive temperatures.
The cutout temperature is programmable by the operator from the front panel of the
controller.

If the cutout is activated because of excessive well temperature, then power to the heater is
shut off and the instrument cools. The well cools until it reaches a few degrees below the
cutout set-point temperature. At this point, the action of the cutout is determined by the
setting of the cutout mode parameter. The cutout has two modes — automatic reset or
manual reset. If the mode is set to automatic, the cutout automatically resets itself when
the temperature falls below the reset temperature allowing the well to heat up again. If the
mode is set to manual, the heater remains disabled until the user manually resets the
cutout.

The cutout set-point may be accessed within the secondary menu. Press
enter the secondary menu and show the heater power. Then press

SET twice to access the

cutout set-point.

SET and EXIT to

Kaye HTR 400 User’s Manual 37

Chapter 7. Controller Operation

Cutout Set-point

To change the cutout set-point, press UP or DOWN.

New Cutout Set-point

Accept Cutout Set-point

7.10 Cutout (cont.)

The next function is the configuration menu. Press EXIT to resume displaying the well
temperature.

38 Kaye HTR 400 User’s Manual

Chapter 7. Controller Operation

Probe Parameters Menu

7.11Controller Configuration

The controller has a number of configuration and operating options and calibration
parameters that are programmable via the front panel. These are accessed from the
secondary menu after the cutout set-point function by pressing

There are 4 sets of configuration parameters—probe parameters, operating parameters,
serial interface parameters, and controller calibration parameters. The menus are selected
using the

UP and DOWN keys and then pressing SET.

7.11.1 Probe Parameters

The probe parameter menu is indicated by,

Press

SET to enter the menu. The probe parameters menu contains the parameters, R0,

ALPHA, and DELTA that characterize the resistance-temperature relationship of the
platinum control probe. These parameters may be adjusted to improve the accuracy of the
calibrator. This procedure is explained in detail in Chapter 8.

SET.

The probe parameters are accessed by pressing
displayed. The value of the parameter may be changed using the
After the desired value is reached, press
Pressing

EXIT causes the parameter to be skipped, ignoring any changes that may have

SET to set the parameter to the new value.

SET after the name of the parameter is

UP and DOWN buttons.

been made.

7.11.1a R0

This probe parameter refers to the resistance of the control probe at 0°C. The value of this
parameter is set at the factory for best instrument accuracy.

7.11.1b ALPHA

This probe parameter refers to the average sensitivity of the probe between 0 and 100°C.
The value of this parameter is set at the factory for best instrument accuracy.

7.11.1c DELTA

This parameter relates to the second order nonlinearity of the sensor . The value is set at t he
factory for best instrument accuracy.

Kaye HTR 400 User’s Manual 39

Chapter 7. Controller Operation

Operating Parameters Menu

Scale Units Currently Selected

Press UP or DOWN to change the units

.

.

New Units Selected

Cutout Reset Mode Parameter

Press SET to access the parameter setting. Normally the

cutout is set for automatic mode.

Cutout Set For Automatic Reset

To change to manual reset mode, press DOWN and then

SET

Cutout Set for Manual Reset

7.11.2 Operating Parameters

The operating parameters menu is indicated by,

UP to enter the menu. The operating parameters menu contains the units scale

Press
selection set and cutout reset mode setting.

7.11.2a Temperature Scale Units

The temperature scale units of the controller may be set by the user to degrees Celsius (°C)
or Fahrenheit (°F). The units are used in displaying the well temperature, set-point,
proportional band, and cutout set-point. The temperature scale units selection is the first
function in the operating parameters menu.

SET to accept the new selection and resume displaying the well temperature.

Press

7.11.2b Cutout Reset Mode

The cutout reset mode determines whether the cutout resets automatically when the well
temperature drops to a safe value or must be manually reset by the operator.The parameter
is indicated by,

40 Kaye HTR 400 User’s Manual

Chapter 7. Controller Operation

Serial RS-232 Interface
Parameters Menu

Press SET to choose to set the sample period. The current

sample period value is displayed.

Current Sample Period (Seconds)

Adjust the value with UP or DOWN and then use SET to s

the sample rate to the displayed value.

New Sample Period

Serial Sample Period Parameter

7.11.3 Serial Interface Parameters

The serial RS-232 interface parameters menu is indicated by,

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.

7.11.3a BAUD Rate

The BAUD rate is set at 2400 and is not adjustable. The BAUD rate of 2400 is required to
communicate with the Validator.

7.11.3b Sample Period

The sample period is the time period in seconds between temperature measurements
transmitted from the serial interface. For example, if the sample rate is set to 5, the
instrument transmits the current measurement over the serial interface approximately
every five seconds. The automatic sampling is disabled with a sample period of 0. The
sample period is indicated by,

Kaye HTR 400 User’s Manual 41

Chapter 7. Controller Operation

Serial Duplex Mode Parameter

Press SET to access the mode setting.

Current Duplex Mode Setting

New Duplex Mode Setting

pressing

SET.

Serial Linefeed Parameter

Current Linefeed Setting

New Linefeed Setting

Press SET to access the linefeed parameter.

pressing SET.

The mode may be changed using

UP or DOWN and

7.11.3c Duplex Mode

The next parameter is the duplex mode. The duplex mode may be set to full duplex or half
duplex. With full duplex, any commands received by the calibrator via the serial interface
are immediately echoed or transmitted back to the device of origin. With half duplex the
commands are executed but not echoed. The duplex mode parameter is indicated by,

7.11.3d Linefeed

The final parameter in the serial interface menu is the linefeed mode. This parameter
enables (on) or disables (off) transmission of a linefeed character (LF, ASCII 10) after
transmission of any carriage-return. The linefeed parameter is indicated by,

42 Kaye HTR 400 User’s Manual

Chapter 7. Controller Operation

Calibration Parameters Menu

7.11.4 Calibration Parameters

The user has access to a number of the instrument calibration constants, namely CTO, C0,
and CG. These values are set at the factory and must not be altered.The correct values are
important to the accuracy and proper and safe operation of the calibrator. Access to these
parameters is available to the user only so that in the event that the controller’s memory
fails, the user may restore these values to the factory settings. The user should have a list
of these constants and their settings with the manual.

CAUTION!

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 calibrator.

The calibration parameters menu is indicated by,

SET five times to enter the menu.

Press

7.11.4a CTO

Parameter CTO sets the calibration of the over-temperat u re cutout. This is not adjustable
by software but is adjusted with an internal potentiometer. This parameter should read
between 150 and 170.

7.11.4b CO and CG

These parameters calibrate the accuracy of the temperature set-point. These are
programmed at the factory when the instrument is calibrated. Do not alter the value of
these parameters. If the user desires to calibrate the instrument for improved accuracy,
calibrate R0 and ALPHA according to the procedure given in Chapter 8.

7.11.4c SCO

This parameter is used at the factory for testing purposes and should not be altered by the
user.

Kaye HTR 400 User’s Manual 43

Chapter 7. Controller Operation

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44 Kaye HTR 400 User’s Manual

Chapter 8. Calibration Procedure

Chapter 8. Calibration Procedure

8.1 Introduction

Sometimes the user may want to calibrate the dry-well to improve the temperature set­point accuracy. Calibration is done by adjusting the controller probe calibration constants
R0 and ALPHA so that the temperature of the dry-well as measured with a standard
thermometer agrees more closely with the set-point. The thermometer used must be able
to measure the well temperature with higher accuracy than the desired accuracy of the dry­well. By using a good thermometer and carefully following this procedure, the calibrator
can be calibrated to an accuracy of better than 0.5°C over a range of 400 degrees.

8.2 Calibration Points

In calibrating the dry-well, R0 and ALPHA are adjusted to minimize the set-point error at
each of two different dry-well temperatures. Any two reasonably separated temperatures
may be used for the calibration. Improved results can be obtained for shorter ranges when
using temperatures that are just within the most useful operating range of the dry-well.
The farther apart the calibration temperatures, the larger the calibrated temperature range.
However, the calibration error will be greater over that range. For instance, if 150°C and
400°C are chosen as the calibration temperatures, the calibrator may achieve an accuracy
of ±0.2°C over the range 100 to 400°C. Choosing 200°C and 300°C may allow the
calibrator to have a better accuracy of maybe ±0.05°C over the narrower range of 175 to
325°C, but outside that range the accuracy may be only ±0.4°C.

Kaye HTR 400 User’s Manual 45

Chapter 8. Calibration Procedure

8.3 Measuring the Set-point Error

The first step in the calibration procedure is to measure the temperature errors (including
sign) at the two calibration temperatures. First set the calibrator to the lower set-point, t

Wait for the well to reach the set-point and allow 30 to 60 minutes to stabilize at that
temperature. Check the stability with the thermometer. When both the well and the
thermometer have stabilized, measure the temperature with the thermometer and compute
the temperature error err

temperature. For example, if the calibrator is set to a lower set-point of t

, which is the actual well temperature minus the set-point

L

=200°C and

L

reaches a measured temperature of 199.7°C, the error is –0.3°C.

L

.

Next, set the calibrator for the upper set-point, t
temperature and compute the error, err

. For example, if the calibrator was set to 400°C

H

, and after stabilizing, measure the well

H

and the thermometer measured 400.1°C, the error is +0.1°C.

46 Kaye HTR 400 User’s Manual

Chapter 8. Calibration Procedure

R0

err

HtL

errLt

H

–

t

HtL

–

--------------------------------------

ALPHA 1+ R0=

ALPHA

1ALPHAt

H

+errL1ALPHAt

L

+err

H

–

tHtL–

-------------------------------------------------------------------------------------------------------------------

1+ ALPHA=

8.4 Computing R0 and ALPHA

Before computing the new values for R0 and ALPHA, the current values must be known.
The values may be found by either accessing the probe calibration menu from the
controller panel or by inquiring through the serial interface. The user should keep a record
of these values in case they may need to be restored in the future. The new values R0’and
ALPHA’are computed by entering the old values for R0 and ALPHA, the calibration
temperature set-points t

following equations,

If, for example, R0 and ALPHA were previously set for 100.2695 and 0.0038319
respectively and the data for t

values R0’and ALPHA’ would be computed as 100.193 and 0.0038272 respectively.
Program the new values R0 and ALPHA into the controller. Check the calibration by
setting the temperature to t

calibration procedure may be repeated to further improve the accuracy.

and tH, and the temperature errors errL and errH into the

L

, tH, errL, and errH were as given above, then the new

L

and tH and measuring the errors again. If desired, the

L

Kaye HTR 400 User’s Manual 47

R0 = 100.00
ALPHA = 0.0038500

t

L

= 150.00°C

measured t = 149.943°C
t

H

= 300.00°C

measured t = 299.814°C

Compute errors,

err

L

= 149.943 - 150.00° = -0.057°C

err

H

= 299.814 - 300.00°C = -0.186°C

Compute R0,

R0

0.186–150.0 0.057–300.0–

300.0 150.0–

----------------------------------------------------------------------------------------

0.00385 1+ 100.000 99.9723–=

1 0.00385 300.0+0.057

·

–1 0.00385 150.0+0.186––

300.0 150.0–

------------------------------------------------------------------------------------------------------------------------------------------------------------ -1+ 0.00385 0.0038544–=

Chapter 8. Calibration Procedure

8.5 Calibration Example

The calibrator is to be used between 125 and 325°C and it is desired to calibrate the
calibrator as accurately as possible for operation within this range. The current values for
R0 and ALPHA are 100.000 and 0.0038500 respectively. The calibration points are
chosen to be 150.00 and 300.00°C. The measured well temperatures are 149.943 and

299.814°C respectively. Refer to Figure 6 below for applying equations to the example
data and computing the new probe constants.

48 Kaye HTR 400 User’s Manual

Figure 6: Calibration Example

Chapter 9. Maintenance

Chapter 9. Maintenance

9.1 Maintenance Recommendations

The calibration instrument has been designed with the utmost care. Ease of operation

•

and simplicity of maintenance have been a central theme in the product development.
Therefore, with proper care the instrument should require very little maintenance.
Avoid operating the instrument in an oily, wet, dirty, or dusty environment.

• If the outside of the instrument becomes soiled, it may be wiped clean with a damp

cloth and mild detergent. Do not use harsh chemicals on the surface which may
damage the paint.

• It is important to keep the well of the calibrator clean and clear of any foreign matter.

DO NOT use fluid to clean out the well.

• Use a commercially available plastic or felt brush, of appropriate diameter for a tight

fit without any fluid, to clean the well. Complete the cleaning process by using cotton
swabs and air to remove any debris.

• Inserts should be cleaned periodically. For cold dry-wells operating below 0°C, clean

the inserts after operating the instrument at or below 0°C. Use emery cloth or other
similar material to clean the outside of the inserts. Ensure that the inserts are wiped
clean of any debris loosened in the buffing process. Periodic cleaning of the outside of
the inserts ensures easy insertion and removal of the inserts from the well.

• The dry-well calibrator should be handled with care. Avoid knocking or dropping the

calibrator.

Kaye HTR 400 User’s Manual 49

Chapter 9. Maintenance

9.1 Maintenance Recommendations (cont.)

•

For dry-wells with removable probe sleeves, the sleeves can become covered with
dust and carbon material. If the buildup becomes too thick, it could cause the sleeves

to become jammed in the wells. Avoid this buildup by periodically buffing the sleeves
clean.

• If a sleeve should be dropped, examine the sleeve for deformities before inserting it in

the well. If there is any chance of jamming the sleeve in the well, file or grind off the
protuberance.

• DO NOT slam the probe stems into the well. This type of action can cause a shock to

the sensor.

• If a hazardous material is spilt on or inside the equipment, the user is responsible for

taking the appropriate decontamination steps as outlined by the n ational safety council
with respect to the material.

• If the mains supply cord becomes damaged, replace it with a cord with the appropriate

gauge wire for the current of the instrument. If there are any questions, call Customer
Service for more information.

50 Kaye HTR 400 User’s Manual

Chapter 10. Troubleshooting

Chapter 10. Troubleshooting

10.1Troubleshooting Guidelines

In the event that the dry-well appears to function abnormally, this section may help to find
and solve the problem. T able 3 below describes several possible problem conditions, along
with likely causes and solutions. If a problem arises, please read this section carefully and
attempt to understand and solve the problem. If the dry-well seems faulty or the problem
cannot otherwise be solved, contact Kaye Customer Service for assistance. Be sure to have
the instrument model number, serial number, and voltage available.

Table 3: Possible Problems and Solutions

Problem Possible Causes and Solutions

Incorrect temperature reading Incorrect R0, ALPHA, and DELTA parameters. Find the values for

R0, ALPHA, DELTA, CO, and CG on the Certificate of Calibration
that was shipped with the instrument (or from subsequent calibrations
of the instrument). Reprogram the parameters into the instrument
memory (see Section 7.10.1, Probe Parameters). Allow the in st rument
to stabilize and verify the accuracy of the temperature reading.

Controller locked up. The controller may have locked up due to a
power surge or other aberration. Initialize the system by performing
the Factory Reset Sequence.

Factory Reset Sequence. Hold the
the same time while powering up the instrument. After the instrument
displays -init-, release the buttons. The display shows -init-, the
instrument model number and the firmware version. After performing
the Factory Reset Sequence, all of the configuration parameters are
reset to their default values. Reprogram R0, ALPHA, DELTA, CO,
and CG parameters into the instrument memory (see Section 7.10.4,
Calibration Parameters) and any other applicable configuration
parameters. These numbers can be found on the Certificate of
Calibration that was shipped with the instrument. Allow the
instrument to stabilize and verify the accuracy of the temperature
reading.

Blank display after mains power
applied

Kaye HTR 400 User’s Manual 51

Blown fuse. A fuse may have blown due to a power surge or failure of
a component. Replace the fuse once. If the fuse blows a second time, it
is likely caused by the failure of a component. Always replace the fuse
with one of the same rating, voltage, and type. Never replace the fuse
with one of a higher current rating.

SET and EXIT buttons down at

Chapter 10. Troubleshooting

Table 3: Possible Problems and Solutions (Continued)

Problem Possible Causes and Solutions

The display shows “-273°C” or
“-459°F”

The display shows “cut-out” Software cut-out is set to low. Check the cutout setting in the Set-

The red LED on the display is
blank.

The instrument heats slowly. Incorrect Scan and Sc an Rate settings. The scan may be on with the

An “o” or “c” is displayed at the
left of the display.

Sensor is disconnected or shorted. Please contact customer servi ce
for further instructions.

point menu.
Power problem. Check that there is power to the instrument.

scan rate set low. Check these settings.
External switch is open. The displayed temperature is frozen and

keeping the set-point from scanning because the external switch is
open. Turn the Switch Test off by pressing the
front panel.

DOWN button on the

10.2Comments

10.2.1 EMC Directive

Amphenol Thermometrics, Inc. equipment has been tested to meet the European
Electromagnetic Compatibility Directive (EMC Directive, 89/336/EEC). The Declaration
of Conformity for your instrument lists the specific standards to which the instrument was
tested.

10.2.2 Low Voltage Directive (Safety)

In order to comply with the European Low Voltage Directive (73/23/EEC), Amphenol
Thermometrics, Inc. equipment has been designed to meet the IEC 1010-1 (EN 61010-1)
and the IEC 1010-2-010 (EN 61010-2-010) standards.

52 Kaye HTR 400 User’s Manual

Chapter 10. Troubleshooting

Figure 7: HTR 400 Wiring Diagram

Kaye HTR 400 User’s Manual 53

Chapter 10. Troubleshooting

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54 Kaye HTR 400 User’s Manual

Warranty

Warranty

Each instrument manufactured by Amphenol Advanced Sensors is warranted to be free
from defects in material and workmanship. Liability under this warranty is limited to
restoring the instrument to normal operation or replacing the instrument, at the sole
discretion of Amphenol Advanced Sensors. Fuses and batteries are specifically excluded
from any liability. This warranty is effective from the date of delivery to the original
purchaser. If Amphenol Advanced Sensors determines that the equipment was defective,
the warranty period is:

• one year for general electronic failures of the instrument

• one year for mechanical failures of the sensor

If Amphenol Advanced Sensors determines that the equipment was damaged by misuse,
improper installation, the use of unauthorized replacement parts, or operating conditions
outside the guidelines specified by Amphenol Advanced Sensors, the repairs are not
covered under this warranty.

The warranties set forth herein are exclusive and are in lieu of all other

warranties whether statutory, express or implied (including warranties or

merchantability and fitness for a p articular purpose , and warrantie s arising

from course of dealing or usage or trade).

Kaye HTR 400 User’s Manual 55

Return Policy

Return Policy

If a Amphenol Advanced Sensors instrument malfunctions within the warranty period, the
following procedure must be completed:

1. Notify Amphenol Advanced Sensors, giving full details of the problem , and provide

the model number and serial number of the instrument. If the nature of the problem
indicates the need for factory service, Amphenol Advanced Sensors will issue a
RETURN AUTHORIZATION number (RA), and shipping instructions for the return
of the instrument to a service center will be provided.

2. If Amphenol Advanced Sensors instructs you to send your instrument to a service

center, it must be shipped prepaid to the authorized repair station indicated in the
shipping instructions.

3. Upon receipt, Amphenol Advanced Sensors will evaluate the instrument to determine

the cause of the malfunction.

Then, one of the following courses of action will then be taken:

• If the damage is covered under the terms of the warranty, the instrument will be

repaired at no cost to the owner and returned.

• If Amphenol Advanced Sensors determines that the damage is not covered under the

terms of the warranty, or if the warranty has expired, an estimate for the cost of the
repairs at standard rates will be provided. Upon receipt of the owner’s approval to
proceed, the instrument will be repaired and returned.

56 Kaye HTR 400 User’s Manual

Amphenol

Advanced Sensors

Customer Support Centers

U.S. A.
Sales and Services
(Repair/Calibration):

Amphenol Thermometrics, Inc.
St Marys Center
967 Windfall Road
St Marys, Pennsylvania 15857
U.S.A.
T: 814-834-9140
F: 814-781-7969

Europe, Asia and Middle East
Sales and Service:

Amphenol Advanced Sensors GmbH
Sinsheimer Strasse 6
D-75179 Pforzheim
Germany
T: [phone]
F: [phone]

Brazil
Sales and Service

Amphenol TFC DO Brazil LTDA
Rodovia Governador Adhemar
Pereira de Barros KM 121,5 S/N
13098-396 Campinas
Sao Paulo, Brazil

U.S. A.
Technical Support:

Amphenol Thermometrics, Inc.
St Marys Center
967 Windfall Road
St Marys, Pennsylvania 15857
U.S.A.
T: 814-834-9140
F: 814-781-7969

China:

Amphenol (Changzhou)
Connector Systems
305 Room, 5D
Jintong Industrial Park
Wujin, Changzhou, Jiangsu, China
T:[phone] ext. 50087
F:[phone]

M4395 Rev. D May 2014

www.amphenol-sensors.com

©2014 Amphenol Thermometrics, Inc. All rights reserved.

Technical content subject to change without notice.