Tempsens CALsys -35/200 User manual

TEMPSENS INSTRUMENTS (l) PVT. LTD. UNIT ll
A-190, Road No.5, M.I.A., Udaipur-313003 INDIA
Ph. : [phone],
Fax : [phone]
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Web : www.tempsens.com
Liquid bath
Temperature
Calibrator
(CALsys -35/200)
User's Guide

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Legal Disclaimer
The information contained in this document is the property of TEMPSENS.
TEMSPENS reserves the right to make changes to this document and to the product described herein without
notice. Before installing and using the product, review the latest version of the applicable documentation,
which are available from the Tempsens website at:
http://www.tempsens.com/
© 2021 Tempsens Instrument Pvt. Ltd. All Rights Reserved.
Document Information
Name
Liquid Bath Temperature Calibrator (CALsys -35/200) User Manual
Document Version
1.0
Document Code
TS.CS.001
Publish Date
Monday, April 11, 2022

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Preface......................................................................................................................................... 5
Safety Information.................................................................................................................. 5
Electrical Safety....................................................................................................................... 6
Health and Safety Instructions................................................................................................ 7
Cautions and Preventions....................................................................................................... 7
Document Conventions........................................................................................................... 8
Chapter 1
Introduction...................................................................................................................................9
1.1 About CALsys -35/200...............................................................................................................9
1.2 Basic Working Model of CALsys -35/200................................................................................. 10
1.3 Physical Measurements.......................................................................................................... 11
1.4 Technical Specifications........................................................................................................... 12
Chapter 2
Setting Up CALsys -35/200........................................................................................................... 13
2.1 Installation.............................................................................................................................. 13
2.2 Optimal Environmental Conditions......................................................................................... 13
2.3 Unpacking and Initial Inspection............................................................................................. 14
2.4 Operating Instructions............................................................................................................ 15
Chapter 3
Operating of CALsys -35/200...................................................................................................... 16
3.1 Turning on the Unit................................................................................................................ 16
3.2 Heating up the source ........................................................................................................... 16
3.3 Operating Instructions............................................................................................................ 17
3.4 Cooling down the source........................................................................................................ 18
3.5 Drain System........................................................................................................................... 19
Table of Contents

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Chapter 4
Operating Unit Control ................................................................................................................. 20
4.1 Front Panel Layout.................................................................................................................. 20
4.2 The Temperature Controller.................................................................................................... 20
4.3 Altering the Set point.............................................................................................................. 20
4.4 Monitoring the Controller Status ........................................................................................... 21
4.5 Temperature Units.................................................................................................................. 21
Chapter 5
Digital Communication................................................................................................................. 22
5.1 Digital Communications Wiring............................................................................................... 22
5.2 Digital Communications Parameters....................................................................................... 23
Chapter 6
Software Installation..................................................................................................................... 24
6.1 Installation.............................................................................................................................. 24
6.2 Parameters on main screen.................................................................................................... 24
Chapter 7
Service & Maintenance................................................................................................................. 26
7.1 Routine Service....................................................................................................................... 26
7.2 Replace the Controlling Sensor............................................................................................... 26
7.3 Replace Solid State Relay......................................................................................................... 26
Chapter 8
Troubleshooting CALsys -35/200.................................................................................................. 27
8.1 CALsys -35/200 unit does not turn on.................................................................................... 27
8.2 CALsys -35/200 unit is not stable........................................................................................... 27
8.3 The temperature of the calibrator does not rise..................................................................... 27

Temperature Calibrator (CALsys -35/200)
User's Guide
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Appendix A : Calibration Services ................................................................................................. 28
In House Calibration Facility.................................................................................................... 28
On-site Calibration Facility...................................................................................................... 29
Fixed-Point Calibration Facility................................................................................................ 29
Appendix B : Warranty ................................................................................................................. 31
Limit of Liability....................................................................................................................... 31
Caution in Using the Product.................................................................................................. 31

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Preface
Welcome to the Liquid bath Temperature Calibrator (CALsys -35/200) user guide. This guide provides
detailed information about all the product options and features, and explains how to use the product and
configure basic settings to suit your requirements.
This user manual contains information about the product and its proper use and should be kept in a place
where it will be easy to access. This user manual also provides safety precautions in using this product.
Safety Information
This topic contains important information regarding safety. Ignoring safety precautions may cause serious
personal injury or damage to the unit and/or its components. Use the equipment only as specified in this
manual. Otherwise, the protection provided by the instrument may be impaired.
Refer to the safety information in the Electrical Safety and Health and Safety Instructions sections or
wherever specified in this manual.
In order to assure the device operates safely, the operator needs to act effectively and be conscious of safety
problems.
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.
The following safety symbols may appear on CALsys -35/200 unit:
SYMBOL
DESCRIPTION
SYMBOL
DESCRIPTION
Risk of Danger. Important
information. See Manual
Hazardous voltage. Risk of electric shock
Caution, Hot Surface
Protective Earth Ground

Temperature Calibrator (CALsys -35/200)
User's Guide
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Electrical Safety
lThis equipment must be correctly grounded before use. Make sure the ground conductor wire
(colored green/yellow) in the main power cable is connected to a protective earth/ground. If the
equipment is not properly grounded, the high voltage may flow through the equipment body
(chassis). SEVERE INJURY OR DEATH may result if personnel fail to observe safety precautions.
lDo not remove the panels from the equipment without proper safety measures to avoid internal
main power supply voltage hazard.
WARNING:
To avoid possible electric shock or personal injury, follow these guidelines.
This equipment uses protective earth circuit to ensure that the conductive parts do not store electric
charges or conduct electricity if insulation fails.
lBefore connecting the equipment to the electricity supply, understand the parts of the calibrator with
the help of operating manual.
lUse power cables only with appropriate voltage and power rating, and that are approved for usage in
your country.
lReplace the main power cable if the insulation is damaged, or if the insulation shows signs of wear and
tear.
lDO NOT put the product at the location where access to the main power is blocked.
lDO NOT use an extension cord or adapter plug.
lDO NOT use the product if it operates incorrectly.
lMake sure the power cord does not touch the hot parts of the product.

Preface
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Health and Safety Instructions
WARNING: BURN HAZARD - DO NOT touch the well access surface of the unit at high temperature
To avoid possible health and safety concerns, follow these guidelines.
lWear appropriate protective clothing before using the equipment.
lOperators of this equipment should be adequately trained in the handling of hot and cold items and
liquids.
lDo not use the apparatus for jobs other than those for which it was designed, that is, the calibration of
thermometers.
lDo not handle the apparatus when it is hot (or cold), without wearing the appropriate protective
clothing and having the necessary training.
lDo not drill, modify or otherwise change the shape of the apparatus.
lDo not use the apparatus outside its recommended temperature range.
lAfter use, do not return the apparatus to its carrying case until the unit has cooled down.
lThere are no user serviceable parts inside. When required, contact Tempsens agent for repair.
lEnsure all materials, especially flammable materials are kept away from the hot parts of the apparatus,
to prevent fire risk.
lDo not use the product around explosive gas, vapor, or in damp or wet environments.
lMake sure that the space around the product meets minimum space requirements.
lDO NOT turn off the unit at temperatures higher than 50°C. This could create a hazardous situation.
Select a set-point less than 50°C and allow the unit to cool before turning it off.
lThe top sheet metal of the furnace may exhibit extreme temperatures for areas close to the well
access.
lMaterials used in this furnace may be irritating to skin, eyes, and respiratory tract. Consult the material
manufacturer's Material Safety Data Sheet (MSDS) to learn about those materials before using.

Temperature Calibrator (CALsys -35/200)
User's Guide
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Cautions and Preventions
To avoid possible damage to the instrument, follow these guidelines:
lBefore working inside the equipment, turn the power off and disconnect the power cord.
lDO NOT turn the unit upside down with the inserts in place; the inserts will fall out of the unit.
lUse of this instrument at HIGH TEMPERATURES for extended periods of time requires caution.
lCompletely unattended high temperature operation is not recommended for safety reasons.
lDO NOT plug the unit into 230 V if the heater switches and fuse holder reads 115 V. This action will
cause the fuses to blow and may damage the instrument.
lComponents and heater lifetime can be shortened by continuous high temperature operation.
lDO NOT use fluids to clean out the well.
lNever introduce foreign material into the probe hole of the insert. Fluids and other materials can leak
into the calibrator causing damage.
lDO NOT drop or force the probe stems into the well. This type of action can cause a shock to the sensor
and affect the calibration.
Document Conventions
The documentation uses the following conventions.
Note:
Configuration notes
Tip:
Recommendations or suggestions
Important:
Information regarding required or default configuration settings and product
limitations
WARNING:
Critical actions and configuration options
WARNING:

Chapter 1
Introduction
The 'CALsys -35/200' has been designed to provide stable and accurate temperature to enable
professionals to calibrate Temperature Sensing Devices by comparison method. The 'CALsys -35/200'
model has been designed to be rugged and easily maintained. This model provides an isothermal enclosure
in which the thermocouple/RTD can be calibrated against the temperature of the calibrator. For traceable
calibration a master calibration sensor should be placed into the metal block alongside the unit under
calibration.
The method is widely accepted because the calibrator provides very stable temperature at its controlled
point, the Master Thermocouple/RTD, which is calibrated by independent Laboratory traceable to National
standards, compares The sensor under calibration.
The 'CALsys' models are part of wide range of portable calibrators designed and made by us.
Please contact us in case you required more information about our other products.
1.1 About CALsys -35/200
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Front Back

Temperature Calibrator (CALsys -35/200)
User's Guide
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'The calibrator controller uses a PT-100 RTD as a controlling sensor and controls the well temperature with
heater. To obtain and maintain a required temperature the controller varies the power to the heater via
solid-state relay. 'In CALsys -35/200, SS chamber with cooling media is cooled with compressed refrigerant
gas system. Temperature is controlled by heater in the chamber & PID controller. Cooling media is agitated
to keep homogeneous temperature. The user should be familiar with the safety guidelines and operating
procedures of the calibrator as described in the User's manual.
1.2 Basic Working Model of CALsys -35/200
The basic working model for CALsys -35/200 is as follows:
Before using the equipment, read the safety guidelines and operating procedures of the calibrator as
described in the Preface of this user manual.
Important:

Introduction
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1.3 Physical Measurements
CALsys -35/200 has the following physical measurements
Ÿ Height: 702mm
Ÿ Width: 410mm
Ÿ Depth: 605mm

Introduction
1.4 Technical Specification
CALsys -35/200 has the following technical specifications:
PARAMETER
SPECIFICATION
Temperature Range
-35°C to 200°C
Accuracy
±0.5°C
Stability
±0.05°C
uniformity
±0.07°C
Immersion depth
150mm
Volume
6 Ltr.
Access opening
105X105 mm
Cooling time
60 minutes(Room Temperature to -35°C)
Heating time
30 minutes
Resolution
0.1°C,0.01°C(Optional)
Display
LCD, with °C or °F user-selectable
Power requirements
230VAC,2KW (50Hz)
Calibration
Accredited calibration certificate provided
Environmental operating conditions
0°C to 40°C, 0% to 90% RH (non-condensing)
Specifications valid in environmental conditions
13°C - 25°C
PC Interface
RS-232,LAN(CALsys -35/200 Auto Cal)
Size (H x W x D)
702(H)x 410(W)x 605(D)mm
Weight
65kg
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Chapter 2
Setting up CALsys -35/200
Place the liquid bath on a flat surface with at least 10 inches of free space around the instrument. Overhead
clearance is required.
DO NOT Place this unit under a cabinet or structure. Plug the power cord into a grounded mains outlet
located on the controlling unit rear panel. Observe that the nominal voltage corresponds to that indicated
in the technical specifications in in of this user's guide.Technical Specifications Chapter 1
2.1 Installation
ŸAlthough the instrument has been designed for optimum durability and trouble-free operation, it must be
handled with care. The instrument should not be operated in an excessively dusty or dirty environment.
Refer to in this user's manual for routine service and cleaning Chapter 7, Service & Maintenance
recommendations.
The instrument operates safely under the following conditions:
lTemperature range: 5 - 50°C (41 - 122°F)
lAmbient relative humidity: 15 - 50%
lPressure: 75kPa - 106kPa
lMain voltage supply within ± 10% of nominal voltage range
lVibrations in the calibration environment should be minimized
lAltitude less than 2000 meters
2.2 Optimal Environmental Conditions
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Setting up CALsys -35/200
CALsys -35/200 is packed in custom-designed packaging to send out your unit. Unpack the furnace carefully.
Inspect the unit after unpacking for any signs of damage, and confirm that your delivery is in accordance
with the packing note. If you find any damage to the unit or an item is missing, notify Tempsens
immediately.
The following accessories are included in the package:
lCALsys -35/200
lPower cord
lRS-232 Cable
lExternal Reference Sensor (RTD)
lManual
lCertificates
lCeramic Wool
2.3 Unpacking and Initial Inspection
CALsys -35/200 RTD
RS-232 Cable Insulation Wool
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1. Open the box carefully and takeout the operating manual from the box and read carefully.
2. Take out the Temperature Calibrator unit carefully and keep it at suitable place.
3. Connect the power cable to the rear power entry and the power plug to the main power outlet.
4. Turn the switch on, and observe the display on the controller. The display shows that the bath is ready for
use.
5. Keep the switch in the ON position.
6. Ensure the sensor is properly inserted in the bath.
7. Keep the fan in ON position.
8. If the fan is running and temperature of the furnace is increasing/decreasing, the bath is in healthy
condition.
2.4 Operating Instructions
lDuring continuous operation the liquid will slowly evaporate and the liquid level may be drop. Make
sure the liquid level should be maintain at proper level. If liquid level has not been maintain at
suggested level performance of the bath will be affected.
l The unit must be correctly connected to the electricity supply.
lThe unit must be correctly grounded.
lThe unit's ON/OFF switch is located on the power inlet. DO NOT switch OFF the unit when it is hot.
Keep the unit running until cooled.
Note:
Temperature Calibrator (CALsys -35/200)
User's Guide
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Chapter 3
Operating CALsys -35/200
3.1 Turning On the unit
3.2 Heating up the source
Press “UP” or “DOWN” key of controller to change the set-point value. The controller switches the
calibrator heater to ONor OFFto raise or lower the temperature. The displayed temperature will gradually
change until it reaches the set-point temperature.
The Calibrator may require 50 to 70 minutes to reach the set-point depending on the span. The unit takes
10 to 15minutes more to stabilize the bath temperature within ± 0.05°C of the set-point.
· All other controller parameters are set to default,and are locked. It is recommended not to change these
parameters.
Note:
1. Before plugging the unit to main power outlet, ensure that the voltage, frequency and current from the
main power outlet are within the recommended rages(typically:230 VAC±10, 50/60 Hz).
2. Turn the controller on using the switch located on the back side and set the temperature value in the
controller. The Calibrator will turn on and begin to heat the previously programmed temperature set-
point.
Controller
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Earth
Neutral
Phase
Main Power Cable Connection

Temperature Calibrator (CALsys -35/200)
User's Guide
1. Fill the liquid approx 70% of inner chamber.
2. Connect the 'CALsys -35/200' to a suitable power supply & ON the Heater & Cooling Switch temperature
source and set the desire temperature value in PID by using raise & lower key.
3. Insert the reference (Master) temperature sensor and UUC (Unit under calibration) into the chamber.
4. PV (Present value) display in controller will gradually rise until it reaches the set point temperature. The
controller takes some times to reach the set-point depending on the span. Furnace is stable when PV is
equal to SV (Set Value).
5. Master sensor takes some times to reach the set point temperature and stable at temperature near
about controller set temperature.
6. When temperature of the master and UUC (Unit under calibration) are stable record the readings of
master sensor.
7. Compare the UUC reading with the master's reading & find out the error by comparison method.
8. Reset the controller and / or repeat the calibration for another calibration point or for another sensor.
9. When the calibration is complete, reset the controller to 0°C & wait until the unit has cooled to at
ambient temperature, before moving the 'CALsys -35/200 to new location the 'CALsys - 35/200' must be
cooled ambient temperature before it can be put back into its carrying case.
3.3 Operating Instruction
Important:
lmake sure liquid level should cover all cooling coil.
lDuring continuous operation the liquid will slowly evaporate and the liquid level may be drop. Make
sure the liquid level should be maintain at proper level. If liquid level has not been maintain at
suggested level performance of the bath will be affected.
lWhen the source is operated at any temperature above ambient temperature, the front face and plate
become hot.
lAlways put the fan in "ON" condition and do not switch off the main power supply directly. Before
tuning the unit off, set the controller to Ambient, and then wait until the temperature drops below
100°C.
lUse of Methanol oil only up to 50°C and Silicon oil ambient to 200°C.
Correct Liquid level
Cooling coil
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Operating CALsys -35/200
lAlways use a master sensor (master RTD/TC) for comparison calibration method.
lCheck that all sensors (test and master) are immersed at same depth in insert.
lIf sensors are not immersed at same depth than there will be an error in temperature reading.
lThe temperature sensors should be long enough to immerse completelyin thecalibration bath. Errors
due to stem conduction can be ignored.
lDo not change the set temperature value too often.For example,you set the temperate initially at
100°C, and when it reaches at 80°C, you change the temperature to 30°C. Or, you set the temperature
initially at 0°C, and when it reaches close to 0°C,you change the temperature to -35°C. Doing so may
affect unit's performance.
lPlan the calibration point by gradually increasing temperature, and then set the controller accordingly.
This method will save the time.
lTake the reading of sensors (master andtest) at stable temperature with the help of digital multi-meter,
or by using Tempsens' TEMPMET 08 or TEMPMET 09 for reading RTD or TC sensor.
Note:
3.4 Cooling Down the Source
lBefore transporting the bath, ensure that the temperature of bath has cooled sufficiently.
lIf you require bath to cool quickly, set the temperature to the room temperature (ambient
temperature).
lAlways cool the heated instrument to ambient temperature before disconnecting it from the
mains,switching it OFF, or removing the temperature sensor or test item.
lAlways keep the heated instrument supervised and under observation until it cools down sufficiently.
Control PRT
Working sensors
to be calibrated
Temperature
controller
Reference PRT
with Traceable
Calibration
Liquid Calibrated Bath
TEMPMET
Digital Thermometer
CH
FUNC
Page | 18

Operating CALsys -35/200
Page | 19
Pull the drain valve lever
counterclockwise to open
the drain valve, and push it
clockwise to close the
drain valve.
Example:
3.5 Drain System
1. Now let say if furnace is operating at temperature -35°C and medium is methanol. Now you want to
check at 200°C.
I. In that condition you have to make the furnace at ambient temperature first. When the furnace will be at
ambient temperature then stop the furnace.
II. You have to “Drain” the whole methanol with help of the drain valve (Attachment).
III. After that there may be a possibility of a thin methanol layer in the inner chamber even after full
drainage. In that condition you may use dry cloth in the inner chamber and rub the bottom surface so that it
absorb the remaining methanol layer.
IV. After that fill silicon oil in the inner chamber of the bath and you can set temperature200°C.
2. Again if you want to check 0°C (Let say).
I. First set the furnace temperature near ambient.
II. When temperature will be below 40°C. Stop the furnace.
III. “Drain” the hole silicon oil with the help of the drain valve.
IV. As mentioned above use dry cloth and rub the inner chamber bottom surface.
V. Fill methanol and set the controller 0°C.
Drain valve
Note:
Use of Methanol oil only up to 50°C and Silicon oil ambient to 200°C.