Amphenol Kaye CTR-40 User manual

M4436 Rev. B, 12/19
Kaye CTR-40
Cold Temperature Reference
User’s Guide

©2019 Amphenol Thermometrics, Inc. All rights reserved.
Technical content subject to change without notice.
Kaye CTR-40
Cold Temperature
Reference
User's Guide
M4436 Rev. B, 12/19
Amphenol
Advanced Sensors www.amphenol-sensors.com

LIMITED WARRANTY AND LIMITATION OF LIABILITY
Each KAYE product is warranted to be free from defects in material and workmanship under normal use and
service. The warranty period is one year and begins on the date of shipment. Parts, product repairs, and
services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of
a KAYE authorized reseller, and does not apply to fuses, disposable batteries, or to any product which, in
KAYE’S opinion, has been misused, altered, neglected, contaminated, or damaged by accident or abnormal
conditions of operation or handling. KAYE warrants that software will operate substantially in accordance
with its functional specifications for 90 days and that it has been properly recorded on non-defective media.
KAYE does not warrant that software will be error free or operate without interruption.
KAYE authorized resellers shall extend this warranty on new and unused products to end-user customers
only but have no authority to extend a greater or different warranty on behalf of KAYE. Warranty support is
available only if product is purchased through a KAYE authorized sales outlet or Buyer has paid the
applicable international price. KAYE reserves the right to invoice Buyer for importation costs of
repair/replacement parts when product purchased in one country is submitted for repair in another country.
KAYE warranty obligation is limited, at KAYE's option, to refund of the purchase price, free of charge repair,
or replacement of a defective product which is returned to a KAYE authorized service center within the
warranty period.
To obtain warranty service, contact your nearest KAYE authorized service center to obtain return
authorization information, then send the product to that service center, with a description of the difficulty,
postage and insurance prepaid (FOB Destination). KAYE assumes no risk for damage in transit. Following
warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If KAYE
determines that failure was caused by neglect, misuse, contamination, alteration, accident, or abnormal
condition of operation or handling, including overvoltage failures caused by use outside the product’s
specified rating, or normal wear and tear of mechanical components, KAYE will provide an estimate of repair
costs and obtain authorization before commencing the work. Following repair, the product will be returned to
the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges
(FOB Shipping Point).
THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. KAYE SHALL NOT BE LIABLE
FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR LOSSES,
INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY.
Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or
limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not
apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court or other
decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any other
provision.
Asia, and Middle East
Amphenol Advanced Sensors Germany GmbH
Sinsheimer Strasse 6
D-75179 Pforzheim
T [phone]
F [phone]
[e-mail]
www.kayeinstruments.com
U.S.A., and Europe
Kaye Thermometrics, Inc.
967 Windfall Road
St. Marys, PA 15857
Tel: [phone]
Fax: +[phone]
[e-mail]
www.ka
y
einstruments.com
India:
Amphenol Interconnect India Pvt Ltd.
Plot no. 6, Survey No.64
Software Units layout
MAHAVEER TECHNO PARK
Hitech City, Madhapur
Hyderabad, Telangana – 500081
T: [phone]
China:
Sales and Service
Amphenol (Changzhou) Connector Systems
305 Room 5D
Jintong Industrial Park
Wujin, Changzhou, Jiangsu, China
T: [phone] x 50087
F: [phone]

ii
Table of Contents
1 Before You Start ................................................................................................. 1
1.1 Symbols Used .................................................................................................................................... 1
1.2 Safety Information ............................................................................................................................ 2
1.2.1 Warnings ....................................................................................................................................................................................... 2
1.2.2 Cautions .......................................................................................................................................................................... 4
2 Introduction ........................................................................................................ 7
3 Specifications and Environmental Conditions ................................................ 9
3.1 Specifications ................................................................................................................................... 9
3.2 Environmental Conditions ............................................................................................................. 10
3.3 Hardware Warranty and Assistance ...................................................................................................... 10
3.3.1 Instrument Warranty ................................................................................................................................................................ 10
3.3.2 In-Warranty Repairs .................................................................................................................................................................. 10
3.3.3 After-Warranty Repairs ............................................................................................................................................................ 11
3.3.4 Equipment Maintenance Agreements .................................................................................................................... 11
3.3.5 Customer Support ........................................................................................................................................................ 11
3.3.6 Customer Support Agreement .................................................................................................................................. 12
3.3.7 Customer Site Assistance ............................................................................................................................................ 12
4 Quick Start ........................................................................................................ 13
4.1 Unpacking....................................................................................................................................... 13
4.2 Set Up ............................................................................................................................................... 13
4.3 Pow er ............................................................................................................................................................. 14
4.4 Setting the Temperature........................................................................................................................... 14
5 Installation ................................................................................................ 17
5.1 Bath Environment ........................................................................................................................... 17
5.2 “Dry-out” Period ......................................................................................................................................... 17
5.3 Bath Preparation and Filling .......................................................................................................... 17
5.3.1 Drain Valve Installation Instructions ........................................................................................................................... 17
5.3.2 Filling With Fluid .................................................................................................................................... 18
5.4 Pow er ............................................................................................................................................................. 19
6 Parts and Controls ........................................................................................... 21
6.1 Front Panel ......................................................................................................................................... 21
6.2 Bath Tank and Lid. ......................................................................................................................... 22
6.3 Back Panel .................................................................................................................................................. 22

iii
7 General Operation........................................................................................... 23
7.1 Heat Transfer Fluid ....................................................................................................23
7.1.1 Temperature Range ......................................................................................................................................................... 23
7.1.2 Viscosity.................................................................................................................................................................. 23
7.1.3 Specific Heat................................................................................................................................................................. 24
7.1.4 Thermal Conductivity ................................................................................................................................................... 24
7.1.5 Thermal Expansion ................................................................................................................................................ 24
7.1.6 Electrical Resistivity ........................................................................................................................................................... 25
7.1.7 Fluid Lifetime ......................................................................................................................................... 25
7.1.8 Safety ..................................................................................................................................................................... 25
7.1.9 Cost 26
7.1.10 Commonly Used Fluids ......................................................................................................................................... 26
7.1.10.1 Water .............................................................................................................................................................. 26
7.1.10.2 Ethylene Glycol ........................................................................................................................... 26
7.1.10.3 Mineral Oil ..................................................................................................................... 27
7.1.10.4 Silicone Oil ..................................................................................................................... 27
7.1.11 Fluid Characteristics Charts................................................................................................................................. 27
7.1.11.1 Limitations and Disclaimer ......................................................................................................... 27
7.1.11.2 About the Graph ............................................................................................................................... 28
7.2 Stirring ........................................................................................................................30
7.3 Pow er ............................................................................................................................................. 30
7.4 Heater ............................................................................................................................... 31
7.5 Temperature Controller ................................................................................................... 31
7.6 Ref riger ation ............................................................................................................................. 32
8 Controller Operation ............................................................................. 35
8.1 Bath Temperature ...................................................................................................................... 35
8.2 Reset Cutout .............................................................................................................................. 35
8.3 Temperature Set-point .................................................................................................... 37
8.3.1 Programmable Set-points ......................................................................................................................... 37
8.3.2 Set-point Value ............................................................................................................................................................ 38
8.3.3 Set-point Vernier ................................................................................................................................................... 38
8.4 Scan .................................................................................................................................. 39
8.4.1 Scan Control .............................................................................................................................................. 39
8.4.2 Scan Rate ....................................................................................................................................................................... 39
8.5 Temperature Scale Units ................................................................................................. 40
8.6 Ramp and Soak Program ...................................................................................................... 40
8.6.1 Number of Program Set-points ................................................................................................................ 40
8.6.2 Set-points .................................................................................................................................................... 41
8.6.3 Program Soak Time .................................................................................................................................... 41
8.6.4 Program Function Mode ........................................................................................................................... 42
8.6.5 Program Control ........................................................................................................................................ 42

iv
8.7 Secondary Menu ...................................................................................................................... 43
8.8 Heater Power ............................................................................................................................... 43
8.9 Proportional Band ............................................................................................................ 43
8.10 Cutou t ........................................................................................................................................ 46
8.11 Controller Configuration ................................................................................................. 47
8.12 Probe Parameters ................................................................................................................... 47
8.12.1 R0 ............................................................................................................................................... 47
8.12.2 ALPHA ........................................................................................................................................ 48
8.13 Operating Parameters .......................................................................................................... 48
8.13.1 Cutout Reset Mode ........................................................................................................................................... 48
8.13.2 Cooling Mode ................................................................................................................................................... 48
8.13.3 Hot Gas Bypass Mode .............................................................................................................................. 49
8.14 Serial Interface Parameters ...................................................................................................... 5 0
8.14.1 Baud Rate ............................................................................................................................................................... 50
8.14.2 Sample Period ....................................................................................................................................................... 50
8.14.3 Duplex Mode ............................................................................................................................................. 51
8.14.4 Linefeed ..................................................................................................................................................... 51
8.15 Calibration Parameters ......................................................................................................... 52
8.15.1 CTO .......................................................................................................................................................................... 52
8.15.2 CO and CG ....................................................................................................................................................... 52
8.15.3 H and L ........................................................................................................................................ 52
8.15.4 HGbt............................................................................................................................................................ 53
9 Digital Communication Interface ........................................................ 55
9.1 Serial Communications ................................................................................................... 55
9.1.1 Wiring .......................................................................................................................................... 56
9.1.2 Setu p ........................................................................................................................................................... 56
9.1.2.1 Baud Rate ............................................................................................................................................... 56
9.1.2.2 Sample Period ....................................................................................................................................... 57
9.1.2.3 Duplex Mode .............................................................................................................................. 57
9.1.2.4 Linefeed ....................................................................................................................................... 57
9.1.3 Serial Operation ........................................................................................................................................ 57
9.2 Interface Commands .............................................................................................................. 57
9.3 Cooling Control ............................................................................................................... 58
10 Calibration Procedure .............................................................................. 63
10.1 Calibration Points ........................................................................................................................ 63
10.2 Measuring the Set-point Error ......................................................................................... 63
10.3 Computing R0 and ALPHA ............................................................................................. 63
10.4 Calibration Example ....................................................................................................... 65

iii
11 Maintenance .......................................................................................... 66
12 Troubleshooting ... ....................................................................................... 68
12.1 Troubleshooting .. ......................................................................................................................... 68
12.2 Comments .... .................................................................................................................... 71
12.2.1 EMC Directive . ........................................................................................................................................... 71
12.2.2 Low Voltage Directive (Safety) ................................................................................................................ 71
12.3 Wiring Diagram . ............................................................................................................... 72

vi
Figures
Figure 1 Drain Valve Installation —IMPORTANT: Do Not Over Tighten. .................................................... 18
Figure 2 Tank Baffle Showing Minimum and Maximum Fill Levels .................................................................. 19
Figure 3 Front Panel ................................................................................................................................................... 21
Figure 4 Chart of Various Bath Fluids and Their Properties .............................................................................. 29
Figure 5 Controller Operation Flowchart ......................................................................................................................... 36
Figure 6 Bath Temperature Fluctuation At Various Proportional Band Settings ............................................. 44
Figure 7 Serial Communications Cable Wiring ................................................................................................... 56
Figure 8 Calibration Example .............................................................................................................................................. 64
Figure 9 Wiring Diagram ...................................................................................................................................... 75

v
Tables
Table 1 International Electrical Symbols ......................................................................................... 1
Table 2 Table of Various Bath Fluids and Their Properties ................................................................. 28
Table 3 Program Mode Setting Actions ......................................................................................... 42
Table 4 Typical Proportional Band Settings for Various Fluids ....................................................... 45
Table 5 Interface Command Summary ........................................................................................ 59
Table 5 Interface Command Summary Continued .................................................................... 60
Table 5 Interface Command Summary Continued .................................................................... 61

1 Before You Start
1
1 Before You Start
1.1 Symbols Used
Table 1 lists the International Electrical Symbols. Some or all of these symbols
may be used on the instrument or in this manual.
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)
Off
On

1 Before You Start
2
Symbol Description
Canadian Standards Association
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
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 personal injury, follow these guidelines.
GENERAL
•DO NOT use the instrument for any application other than calibration
work. The instrument was designed for temperature calibration. Any other
use of the unit may cause unknown hazards to the user.
•DO NOT use the unit in environments other than those listed in the user’s
guide.
•DO NOT overfill the bath. Overflowing extremely cold or hot fluid may
be harmful to the operator. See Section 5.3, Bath Preparation and Filling,
for specific instructions.
•Follow all safety guidelines listed in the user’s manual.
•Calibration Equipment should only be used by Trained Personnel.

1 Before You Start
3
•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-hu-
mid environments, or anytime the instrument 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 re-
quirements 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 apply-
ing power such as storage in a low humidity temperature chamber operat-
ing at 50 degree centigrade for 4 hours or more.
•DO NOT operate high temperature baths (500°C) near flammable materi-
als. Extreme temperatures could ignite the flammable material.
•Overhead clearance is required. Do not place the instrument under a cabi-
net or other structure. Always leave enough clearance to allow for safe
and easy insertion and removal of probes.
•The instrument is intended for indoor use only.
BURN HAZARD
•Extremely cold temperatures may be present in this equipment. Freezer
burns and frostbite may result if personnel fail to observe safety precau-
tions.
•High temperatures may be present in this equipment. Fires and severe
burns may result if personnel fail to observe safety precautions.
ELECTRICAL HAZARD
•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, 60Hz (230 VAC, 50Hz 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 ordi-
nances. Consult a qualified electrician. DO NOT use an extension cord or
adapter plug.
•DO use a ground fault interrupt device. This unit contains a liquid. A
ground fault device is advised in case liquid is present in the electrical
system and could cause an electrical shock.
•Always replace the power cord with an approved cord of the correct rat-
ing and type. If you have questions, contact Amphenol Advanced
Sensors Customer Service.

1 Before You Start
4
•High voltage is used in the operation of this equipment. Severe injury or
death may result if personnel fail to observe the safety precautions. Before
working inside the equipment, turn off the power and disconnect the
power cord.
BATH FLUIDS
•Fluids used in this unit may produce noxious or toxic fumes under certain
circumstances. Consult the fluid manufacturer’s MSDS (Material Safety
Data Sheet). Proper ventilation and safety precautions must be observed.
•The instrument is equipped with a soft cutout (user settable firmware) and
a hard cutout (set at the factory). Check the flash point, boiling point, or
other fluid characteristic applicable to the circumstances of the unit opera-
tion. Ensure that the soft cutout is adjusted to the fluid characteristics of
the application. As a guideline, the soft cutout should be set 10°C to 15°C
below the flash point of the bath fluid. See Section 7.1, Heat Transfer
Fluid, for specific information on bath fluids and Section 8.10, Cutout.
1.2.2
Cautions
•THE DRAIN VALVE MUST BE INSTALLED ON THE BACK OF THE
BATH BEFORE ATTEMPTING TO FILL THE TANK WITH FLUID.
See Section 5.3, page 17 for drain installation instructions.
•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 6
inches (15 cm) of clearance around the instrument.
•DO NOT overfill the bath. Overflowing liquid may damage the electrical
system. Be sure to allow for thermal expansion of the fluid as the bath
temperature increases. See Section 5.3, Bath Preparation and Filling, for
specific instructions.
•DO NOT change the values of the bath calibration constants from the fac-
tory set values. The correct setting of these parameters is important to the
safety and proper operation of the unit.
•The refrigeration may be damaged or the lifetime shortened if the
set-point temperature is set above 60°C for more than one hour with the
refrigeration manually on. Ensure that the refrigeration is off when the
unit is used above 60°C.
•The Factory Reset Sequence 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 Test to restore the test pa-
rameters.

1 Before You Start
5
•DO NOT operate this instrument in an excessively wet, oily, dusty, or
dirty environment.
•The unit is a precision instrument. Although it has been designed for opti-
mum durability and trouble free operation, it must be handled with care.
Position the unit before the tank is filled with fluid. Use the handles pro-
vided to move the unit. Due to the weight of the compressor, it may re-
quire two people to safely move the bath. If two people are used, place
one person in the front and one person in the back of the unit, carefully
slide hands under the unit and lift in unison. The area containing the com-
pressor will be heavier than the rest of the unit. Do not move a unit filled
with fluid.
•Most probes have handle temperature limits. Be sure that the probe handle
temperature limit is not exceeded in the air above the instrument.
•The instrument and any thermometer probes used with it are sensitive in-
struments that can be easily damaged. Always handle these devices with
care. Do not allow them to be dropped, struck, stressed, or overheated.
COLD BATHS
•Refrigerated baths require that the condensing coil be cleaned periodi-
cally. Accumulation of dust and dirt on the condenser will result in pre-
mature failure of the compressor.
•This bath has been equipped with a brownout and over voltage protection
device as a safety feature to protect the system components.
•Mode of Operation: This bath needs to be plugged into the line voltage
for at least 2 minutes before operation. This is only necessary for the first
time that the bath is energized or when it is moved from one location to
another. Turning the bath ON or OFF does not trigger the delay.
•If a High/Low voltage condition exists for longer than 5 seconds, the bath
de-energizes. An amber indicator on the back panel lights when this con-
dition exists.
•Re-energization is automatic upon correction of the fault condition and af-
ter a delay cycle of about 2 minutes. If a fault condition exists upon appli-
cation of power, the bath will not energize.
•Under and Over Voltage Protection at 115 VAC
♦ Voltage Cutout: ±12.5% (101 - 129 VAC)
♦ Voltage Cut In: ±7.5% (106 - 124 VAC)
•Under and Over Voltage Protection at 230 VAC
♦ Voltage Cutout: ±12.5% (203 - 257 VAC)

1 Before You Start
6
♦ Voltage Cut In: ±7.5% (213 - 247 VAC)

7
2 Introduction
2 Introduction
The Kaye Cold Temperature Reference is a bench-top constant temperature
bath useful in temperature calibration and other applications requiring stable
temperatures. An innovative state of the art solid-state temperature controller
has been incorporated which maintains the bath temperature with extreme sta-
bility. The temperature controller uses a micro-controller to execute the many
operating functions.
User interface is provided by the 8-digit LED display and four key-switches.
Digital remote communications is standard with an RS-232 interface.
The CTR –40 bath was designed to be compact and low cost without compro-
mising performance. The CTR –40 bath operates over a wide temperature range
from –40°C to 150°C. The refrigeration permits sub-ambient temperature
control.
The CTR –40 features:
•Rapid heating and cooling
•RS-232 (standard)
•Temperature scan rate control
•Ramp and soak functions
•Compact size
•Eight set-point memory
•Adjustable readout in °C or °F
•Automatic refrigeration control

2 Introduction
9
3 Specifications and Environmental Conditions
3.1 Specifications
–40°Cto150°C
Stability (2 sigma)
±0.005°C at –40°C (ethanol)
±0.005°C at 25°C (water)
±0.007°C at 150°C (5012 oil)
Uniformity
±0.006°C at –40°C (ethanol)
±0.005°C at 25°C (water)
±0.010°C at 150°C (5012 oil)
Heating Time
†
60 minutes, from 25°C to 150°C (5012 oil @ 115V)
CoolingTime
110 minutes, from 25°C to –40°C (ethanol)
Stabilization Time
15-20 minutes
TemperatureSetting
Digital display with push-button entry
Set-point Resolution
0.01°; 0.00018° in high resolution
DisplayTemperatureResolution
0.01°
Digital Setting Accuracy
±0.5°C
Digital Setting Repeatability
±0.01°C
Heater
1400 VA @ 115V (230V) Nominal
Access Opening
172mm x 94mm (6.8” x 3.7”)
Depth
234 mm (9.25”)
Wetted Parts
304 Stainless Steel
Power
†
115 V ac (±10 %), 60 Hz, 15 A [230 V ac (±10 %), 50 Hz, 8 A optional], 1400 VA
Caution W
If the volt age is outside ±10%, the compressor may be damaged.
Check the
back panel label for the correct voltage and frequency prior to energizing
the unit.
Volume
9.2 liters (2.4 gal.)
Weight
35.4 kg (78lb.)
Size
305 mm W x 622mm D x 584 mm H (12” x24.5” x 23”) (W x D x H)
Safety
Refrigeration
R-410A single stage
Interface Package
RS-232 included
†
Rated at listed 115 V (or optional 230V).
IEC 61010-1; Overvoltage Category II, Pollution Degree 2; IEC 61010-2-010,
IEC 61010-2-011
Electromagnetic Compatibility
International ........................................IEC 61326-1: Basic Electromagnetic
Environment; CISPR 11: Group 1, Class A
Group 1: Equipment has intentionally generated and/or uses conductively-cou-
pled radio frequency energy that is necessary for the internal function of the
equipment itself.
Class A: Equipment is suitable for use in all establishments other than domestic
and those directly connected to a low-voltage power supply network that supplies
buildings used for domestic purposes. There may be potential difficulties in
ensuring electromagnetic compatibility in other environments due to conducted
and radiated disturbances.
Caution: This equipment is not intended for use in residential environments and
may not provide adequate protection to radio reception in such environments.
Range