Hanse VTC Series Manual

Operation,
and
Maintenance Instructions
for
Hanse Environmental, Inc.
VTC Series
!
Rev H 2018

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Introduction 5.............................................................................................
Safety Information 6...................................................................................
Liquid Nitrogen Safety 7.............................................................................
Precautions 8.............................................................................................
Training 8...................................................................................................
Chamber Safety Features 9.......................................................................
Specifications and Utility Requirements 11................................................
Service Connections 11..............................................................................
Chamber Construction 12..........................................................................
Features and Performances 14..................................................................
System Features 14...................................................................................................
Performance 15.........................................................................................................
Options 16.................................................................................................................
Chamber Controls and Instrumentation 18................................................
Operation 20..............................................................................................
Starting Chamber from Off. (SOP) 21........................................................................
Temperature System Operation - Manual 22.............................................
Temperature System Operation - Computer Control 22.............................
Vibration System Operation 22..................................................................
Calibration 23.............................................................................................
Calibration of the Dytran 4007 Quad Sensor Conditioner 27....................................
IMI Model 682B03 ICP Vibration Transmitter 29.......................................................
704-GRMS System Calibration (Chambers Pre 2006) 30.........................................
Simulator Circuit 34...................................................................................................
Block Diagram 35......................................................................................................
Input and Output Diagram 36....................................................................................
Sensors 37.................................................................................................................
Ultrasonic Humidification Systems 38........................................................
System Maintenance 40.............................................................................
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Monthly Maintenance 40............................................................................................
Daily Maintenance 41................................................................................................
Vibration Table Maintenance 44................................................................................
Performing Auto Calibration LN2 Valve 45................................................................
Identification of Parts (Worchester with Proximity Positioner) 45..............................
Pre Auto Calibration Checks 46.................................................................................
Auto Calibration Background 47................................................................................
Auto calibration of Proximity Positioner Ln2 Valve. 48..............................................
Programing Custom Valve Curve 50.........................................................................
Vacuum Jacked Valves 54.........................................................................................
Units with Steam Humidifier, See OE manuals for your system. 55..........................
Vibration Flow chart 55..............................................................................................
Service Notes: 62......................................................................................................
Addendum: 63...........................................................................................................
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Introduction
#The Vibration Temperature Chamber system offers you the ability to excite
products with multi-axial impact vibration while simultaneously exposing your product-
under-test to extreme temperatures at very rapid change rates. This combination has
proven to be an extremely effective means of identifying failure-prone components and
assemblies in the shortest possible time. The unique characteristics of the Hanse
Environmental Inc. temperature and vibration systems are of key importance in
achieving this effectiveness.!
#You are urged to carefully read the following pages, and particularly the
SAFETY section, (immediately following), before installing or operating this equipment.
This will result in safer operation, longer equipment life, more effective testing, and
probably a lot less frustration too!!
#The staffand employees of Hanse Environmental, Inc. thank you for choosing
our product. Please don't hesitate to call us with any questions or comments that you
may have.!
Hanse Environmental, Inc!
235 Hubbard Street
Allegan, MI 49010
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Web Site: www.HanseEnv.com
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Safety Information
Your Hanse Environmental Inc. Equipment is provided with several safety systems
designed to help prevent accidental damage to product and equipment, and avoid
injury to personnel. Always operate this equipment in accordance with the procedures
set forth in the OPERATION section of this manual. The safety systems described
below should be checked at least once every 30 days, and any inoperative or
questionable conditions must be corrected before resuming operation. Only properly
trained personnel must do servicing of this equipment and its associated utility service!
Compressed air, liquid nitrogen, and high voltages can all cause severe injury or death
if not properly handled.!
WARNING!
HIGH SOUND LEVELS!
The vibrators produce extreme sound power levels, which may cause temporary
or permanent hearing damage, particularly after prolonged exposure. Do not
attempt to operate vibration equipment with doors open unless all affected
personnel wear adequate hearing protection!
WARNING!
EXTREME TEMPERATURES AND PRESSURES!
This equipment produces extreme temperatures and uses high pressure fluids.
Failure to follow instructions and use proper safety precautions can cause injury
or death.
WARNING!
ASPHYXIATION HAZARD!
This equipment uses LIQUID NITROGEN (LN2), which can displace oxygen and
cause severe injury or death due to a lack of oxygen.
ALWAYS allow adequate time for ventilation after opening doors before entering
workspace! NEVER operate this equipment unless all exhaust ports are securely
ducted to outside of building "
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Liquid Nitrogen Safety!
Properties: Liquid Nitrogen
•# Liquid Nitrogen has a boiling point of -195.8°C !
•# Volume of expansion liquid to gas (at 15°C, 1 atm.) = 682.1 !
•# Sg = 0.808 (at -195.8°C). !
•# Density of liquid (normal boiling point, 1 atm.) = 0.807 g/cc !
•# Colorless, Odorless liquid similar in appearance to water. !
&!
Known or Expected Hazards
Temperature Related
•# The extremely low temperature of the liquid can cause severe burn-like
damage to the skin either by contact with the fluid, surfaces cooled by the fluid
or evolving gases. The hazard level is comparable to that of handling boiling
water. !
•# The low temperature of the vapor can cause damage to softer tissues e.g. eyes
and lungs but may not affect the skin during short exposure. !
•# Skin can freeze and adhere to liquid nitrogen cooled surfaces causing tearing on
removal. !
•# Soft materials e.g. rubber and plastics become brittle when cooled by liquid
nitrogen and may shatter unexpectedly. !
Vapor Related
•# Large volumes of nitrogen gas are evolved from small volumes of liquid nitrogen
(1 liter of liquid giving 0.7 m3of vapor) and this can easily replace normal air in
poorly ventilated areas leading to the danger of asphyxiation. It should be noted
that oxygen normally constitutes 21% of air. Atmospheres containing less than
10% oxygen can result in brain damage and death (the gasping reflex is
triggered by excess carbon dioxide and not by shortage of oxygen), levels of
18% or less are dangerous and entry into regions with levels less than 20% is
not recommended. &!
Risks
For an untrained person, the risk of injury is moderate with cryogenic burns the most
likely injury. However in exceptional circumstances when large amounts of material are
spilled in an enclosed space, asphyxiation may be fatal.!
Who is likely to be injured?
The most likely injury is to the person using the material although following major
spillage all inhabitants of a room may be affected. !
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&!
Precautions
Operation
•# Liquid nitrogen should never be used except in a well-ventilated area.
•# Only containers or fittings (pipes, tongs etc.) that have been designed
specifically for use with cryogenic liquids may be used as non-specialized
equipment may crack or fail. !
•# Skin contact with either liquid nitrogen or items cooled by liquid nitrogen should
be avoided as serious burns may occur. Care must be taken with gloves, wrist-
bands or bracelets which may trap liquid nitrogen close to the skin.&!
•# Plumbing components need to be brass, copper or stainless steel chosen to
meet the extreme cold and pressure requirements. You cannot use carbon
steel!!
Personal Protective Equipment
The following equipment should be worn when handling or dispensing liquid
nitrogen:
•# Face shield or safety glasses. !
•# Dry insulated gloves when handling equipment that has been in contact with the
liquid. NB there is dispute over the advisability of wearing gloves while handling
liquid nitrogen because there is a possibility that gloves could fill with liquid and
therefore prolong hand contacts which would make burns more severe. If gloves
are worn they should be loose fitting and easily removed.
•# Lab coat or overalls are advisable to minimize skin contact and also trousers
over shoe/boot tops to prevent shoes filling in the event of a spillage.
Avoidance of Oxygen Depletion/ Asphyxiation
•# Liquid nitrogen should normally be used only in a well-ventilated area.
•# Oxygen Sensors. Oxygen sensors and alarms should be in place in any area
where liquid nitrogen is to be used. Also recommended with the oxygen sensor
is an interlock system to shut down safety valves if oxygen level drops below
safe levels.
•# 19.5% Oxygen is set by OSHA
Training
•# New users of liquid nitrogen should receive instruction in its use from trained
members of the staffand should know the use of:!
o#Oxygen alarms!
o#Proper ventilation!
o#Emergency ventilation!
o#Evacuation plan!
o#LN2 supply shutoffprocedure.!
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Chamber Safety Features
Door Interlock Switches:
One door on each side is provided with a sensor, which will interrupt heat, cool,
vibration, and optional humidity operation when the doors are open. These sensors are
located near the top of each of the chamber doors. Operation of the vibration system
with a door open can cause eardrum damage due to the high sound power levels
produced. Do not open doors without switching offthe vibration system first, and do
not operate the equipment unless all door interlocks are functioning properly.!
Note: door interlocks do not protect Access ports and plugs. They can also leak a
significant amount of sound energy when open, although typically not enough to cause
injury. Since they are provided for cables and hoses supporting product under test, it
will often be necessary to operate the equipment with one or more of these port covers
open. Packing the port with foam or other material rated for anticipated temperature
ranges will greatly reduce noise leakage. !
Be absolutely certain that no one is directly in front of an open
access port before switching on the vibration system!!
Interlock Safeties:
Multiple safety devices are interlocked such that heat, liquid nitrogen and vibration are
inhibited when any of the safeties are activated. Safeties items include but are not
limited to:
•# Door closed limit switches!
•# High and Low air temperature limit controller!
•# Event control of heating and cooling!
•# Auxiliaries on motor starter!
•# Phase Load Monitor (PLR)!
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Temperature High/Low Limit Control:
A user-programmable limit is provided by the Watlow F4 alarms. Alarm 1 is setup for
use with the product thermocouple (input 3). When the limit is tripped the safety valves
and contactors power down to prevent additional temperature changes.!
Vibration High Limit Control:
A user-programmable limit is provided by the Watlow F4 alarms. Alarm 2 is setup for
use with the vibration signal (input 2). When the limit is tripped the safety valves power
down and bring the vibration to a halt.!
Secondary High Limit Control:
In addition to the user-programmable Hi/Lo limit control there is a Watlow series 97
(Older) or PM EZ-Zone Limit (New). It is a secondary adjustable control is provided to
protect the chamber from high temperature damage. This device senses air
temperature near the electric heat elements in the plenum area and will shut down the
system if plenum temperatures exceed safe limits due to causes such as airflow
obstruction or failure, heat controller failure, or excessive product loading with
insufficient cooling (such as occurs when running out of LN2).!
This secondary limit can be reset by pressing the reset button located on the controller. !
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Specifications and Utility
Requirements
Hanse Environmental Inc. builds multiple equipment sizes, with various optional
features available, including modification of workspace height, heating and cooling
capacity, and maximum vibration levels. Humidity and altitude chambers are also
available upon request. Information shown is for standard VTC models. Your chamber
may vary if special requests were made at time of purchase concerning workspace
dimensions, product mass or temperature ramp rates, or non-standard line voltages.
Other manufacturers, such as Watlow, provide their own manuals along with the
chamber. Material data sheets are also provided.!
Utility Requirements
•# Electric: Requirements vary with model and local requirements. Listed below is our
FLA on 480V 3 Phase.!
•# Liquid Nitrogen: Required pipe size and pressure is listed below in comparison
chart.!
•# Compressed Air: Required pipe size, pressure, and flow requirements listed below
in comparison chart. Clean dry air is required.!
Service Connections
Please see Hanse “Site Preparation manual for VTC Chambers” for all
service connections and dimensions.
This can be Downloaded from www.HanseEnv.com
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Comparison Chart

Chamber Construction
Interior Chamber Liner
The chamber liner is constructed of 18 gauge, high nickel content, and series
300 stainless for maximum corrosion resistance. The liner is heliarc welded on
all seams to insure a hermetic seal preventing moisture migration into the
chamber during low-temperature operation. Provisions are made at all liner
seams and corners to allow for thermal expansion during temperature cycling
operation. All interior parts exposed to the chamber environments are fabricated
of corrosion resistant materials.!
Exterior Chamber
The exterior cabinet is composed of heavy-duty welded steel with 16 gauge
sheet metal panels. Panel-to-chamber joints are sealed to prevent moisture
migration into insulation area. The chamber exterior is finished with water-based
enamel sprayed over cleaned, primed surface. The walls are insulated with
Hanse Environmental’s exclusive six-layer insulation for minimum heat and noise
transfer to outside environment.!
Chamber Doors Hardware and Windows
VTC-1.5 and below:
Single (1) front door of the same construction as the chamber that will give full
access to the product under test. Doors close manual and are sealed with two
silicone gaskets to maintain a moisture-proof seal under all chamber-operating
conditions and to reduced noise levels. Hinges and latches are of heavy-duty
design and are constructed of corrosion-resistant or plated materials.!
One (1) 12” x 12” (30.5 cm x 30.5 cm) multi-pane windows are provided, one in
each chamber doors. The multi-pane window assembly incorporates an integral
desiccant to insure dryness and minimizes internal fogging at low chamber
temperatures.!
VTC-4 and VTC-6:
Two (2) doors both front and rear made of the same construction as the
chamber that will give full access to the product under test. Doors close manual
and are sealed with two silicone gaskets to maintain a moisture-proof seal under
all chamber-operating conditions and to reduced noise levels. Hinges and
latches are of heavy-duty design and are constructed of corrosion-resistant or
plated materials.!
Two (2) 20” x 20” (50.8 cm x 50.8 cm) multi-pane windows are provided, one in
each chamber doors. The multi-pane window assembly incorporates an integral
desiccant to insure dryness and minimizes internal fogging at low chamber
temperatures.!
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VTC-9 and Above:
Front and rear bi-parting doors (a total of 4 bi-parting doors) of the same
construction as the chamber that will give full access to the product under test.
Doors latch closed pneumatically and are sealed with two silicone gaskets to
maintain a moisture-proof seal under all chamber-operating conditions and to
reduced noise levels. Hinges and latches are of heavy-duty design and are
constructed of corrosion-resistant or plated materials.!
Four (4) 12” x 24” (30.5 cm x 61.0 cm) multi-pane windows are provided, one in
each chamber doors. The multi-pane window assembly incorporates an integral
desiccant to insure dryness and minimizes internal fogging at low chamber
temperatures.!
Access Ports
The multiple 6” (15.2 cm) diameter stainless steel access
ports with covers and plugs are provided to facilitated
data acquisition wire and power wires to the product
under test. The ports are welded on the interior, flanged,
and sealed on the exterior. Ports are also provided with
foam plug to minimize heat and noise transfer to outside
environment. The port is covered with a hinged cover and
fastener.!
!
Chamber Lights
The chamber is provided with 120 v-halogen light(s)
controlled from an external control switch. Lights are capable
of rotating and pivoting to direct light as required for optimal
viewing of product under test. Optional recessed lights in the
chamber are optional and are fixed and use wide angle
halogen bulbs the same type as standard lights.!
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Features and Performances
System Features
•# High Rate Heating System - 3 phase, solid-state control rectifier, 0 crossover
fire, proportional control of Open Nichrome heater wire balanced system.!
•# HighRateTM Liquid Nitrogen Cooling System: Direct atomization in control
plenum, InfitrolTM proportional control valve for Models VTC-4 and up (Optional
for VTC-1.5), and redundant solenoid safety valve.!
•# Adjustable Air Flow Plenum: For directing airflow to product. Minimum (4) 3”
diameter ports for distributed airflow to product - Models VTC-4 and up.
Vibration Exciters: LubeMistTM lubricated vibrators with adjustable ball valves,
one for each pneumatic vibrator for low G-level performance using fewer
vibrators. SoftStartTM designed vibrators minimize starting shock to products.!
•# Vibration Exciters - Lubricated vibrators with adjustable ball valves, one for each
pneumatic vibrator for low G-level performance using fewer vibrators. !
•# Vibration Table Support Springs - one set of four (4), rated at 250 lbs. each total
static load of 1000 lbs. (Other sizes available)!
•# Dual Full Opening Doors VTC-9 and above - (front and back) for easy access to
product under test. Doors closed pneumatically and sealed with double "P"
gaskets for ambient noise reduction and temperature insulation.!
•# Insulation – Hanse Environmental, Inc.’s exclusive six (6) insulation layers,
staggered for superior thermal and noise insulation.
•# Tempered Multi pane Viewing Windows - one in each door, front and back.!
•# Interior Light - Multiple Halogen lights. !
•# Round Access Ports - 6" diameter ports with #2 charcoal polyester virgin
material port plugs. One lower port used for vibrator inlet and to exhaust
compressed air.!
•# Programmable Vibration Control - Programmable vibration ramps, gRMS level,
and test duration all synchronized with the temperature controller.!
•# Multi Accelerometer Monitoring - Four (4) accelerometers can be monitored
simultaneously.!
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Performance
Overview
•#Temperature Range: -100 to +200o C !
•#Temperature Change Rate:&70o C/min (-65 to +100o C with 50lb Aluminum Fin
Coil Load). !
•#Temperature Control: ± 1o C after stabilization. !
•#Tri-Axial Vibration: Six-Degree-of-Freedom (6DoF) Vibration, non-coherent
broadband vibration 5-10,000Hz 100 gRMS New. 90% of vibration energy in
5-4000Hz for maximum low energy in low frequency range. Ultra-Hi vibration
performance option in Models VTC-16 and 25.!
Vibration Table and Vibrators:
Vibration simulation is achieved using multiple pneumatically actuated pistons
precisely oriented to act in conjunction with a carefully engineered set of aluminum
plates to transmit broad frequency vibration patterns acting with six degrees of
freedom at controlled intensity.!
•#Tri-Ax Vibration: Tri-axial non-coherent, six degree of freedom (6DoF) broadband
vibration: 5 to 10000 Hz, 100 gRMS with unloaded table at ambient.!
•#Vibration Control: to within 0.5g within one (1) minute of settling.!
•#Tri-Ax Vibration Table: Mounting surface uses square bolt down pattern with
stainless steel 3/8"-16 insert on 4" centers or on metric tables M10-1.5 inserts
on 100mm centers. Ceramic insulation thermally isolates mounting surface from
vibration base for improved temperature cycling and vibrator life.!
Temperature Control System:
Heating is accomplished with resistive electric elements, while cooling is accomplished
by direct injection of liquid nitrogen (LN2). Electric heaters are carefully selected and
arranged to provide extremely rapid temperature rates of change without exceeding
safe design limits of heat elements. Liquid nitrogen is injected using helical dispersion
nozzles to quickly vaporize the liquid, providing maximum cooling without exposing
product under test to un-vaporized nitrogen droplets.!
!
•#Temperature Range: from –100 C to +200 C, (-148 F to +392 F). An
extended range of –150 C to +400 C is available for an additional charge.!
•#Temperature Change Rate: 70 oC/min (-65 to +100 oC with 50lb Aluminum
Fin Coil Load).
•#Temperature Control: to within 1 C, (-148 F to +392 F). After stabilization.!
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Options
•#Humidity: Direct Injection, 10 to 85% RH from 35 to 75oC, Capacitance
sensor. !
•#HanseViewTM:System control of temperature and vibration. Control/Data
Logger, and Control/Data Logger/Analyzer options. !
•#Vibration Fixtures: Specially designed for HALT/HASS applications. !
•#LN2 System: Complete installation, piping and controls !
•#Stand-Alone: Temperature Cycling Chambers or 6dof Vibration Tables in
sizes shown below.!
•# Event Output: Eight event output relay software profile control.!
Air circulation:
The chamber is equipped with non-corrosive fans providing air circulation to minimize
chamber temperature gradients. Three phase motors drive the fans. Baffles provide
input and output air openings to direct the airflow in the chamber.!
Major advantage of Hanse Environmental Inc. chamber is the air circulation
design. This dynamic air circulation was designed to fit convection cooling
design and minimize the excessive air for fan-forced cooling product.!
!
Adjustable Air Flow Plenum:
Thermally conditioned air exits through plenum. 3” ports are also provided to directly
conditioned air to particular areas within the chamber’s working volume.
Air Blower Motors:
Heavy-duty ball bearing type motors are used to drive the air circulator blower. The
blowers are driven by mean of extended stainless shafts. The motors are mounted
vertically, outside the thermally conditioned space to minimize stress on the motor.!
NOTE: The direction of rotation of circulators (fans) is very important. The air
circulation must be from the chamber workspace, through the circulators (fans)
past the heaters and back to the chamber workspace. If a circulator is rotating in
the wrong direction (clockwise), two of the three, three-phase power lines must
be switched. The corrected direction should be counter-clockwise.!
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Electrical Control Consoles:
One primary supply voltage is required to operate the chamber. All other required
voltage is produced by transformers and power supplies located in the main control
console. The console is assembled for easy maintenance. All relays, contactors, and
motor starters are located in the control console. A complete set of electrical
schematics is provided with the chamber. The electrical boxes are located on the
chamber side.!
Optional Humidity System:
Water is injected and atomized to provide humidity control in the working volume.
Chamber humidity level is controlled through the chamber controllers.!
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Chamber Controls and
Instrumentation
Programmable Temperature Controller:
Product temperature, as well as air temperature are controlled by the unique, Watlow
F4 temperature controller.!
Temperature Sensors:
Chamber and product temperatures are measured by type T thermocouples. Back up
air safety controller monitors a separate type T thermocouples.!
Air Safety Controller:
The Watlow Series 97 temperature controller included monitors a Type T
thermocouples. Controller has two independent set points for monitoring high and low
temperature limits. These high and low temperature alarms are wired into the
chamber’s safety circuit.!
Control Software:
HanseView Control allows for manual and profile control.!
HanseView Analysis allows for manual and profile control as well as vibration analysis.!
!
Vibration level Control:
A GRMS meter connected to an accelerometer provides instantaneous readout of
vibration intensity in one axis. Additional accelerometers can be purchased and
installed to provide multi-axis indication. Software included with the system allows
reading and control of g levels.!
•# True RMS Vibration Meter: for user-selectable over-g limit protection with
monitor and drive capability. Four inputs available with four outputs available.
Optional display available. Single display for control only.!
•# Miniature, Low Impedance, Voltage Mode Control Accelerometer: one (1) Dytran
model 3030B5, with a 3 meter. cable. This has 10-32 ends and comes with a
10-32 to BNC adapter.!
•# Current Source: for Control Accelerometer, one (1). !
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Operator Control Switches:
Door Open/Close Opens or closes chamber doors !
Light On/OffTurns on and offchamber lights!
Heat Enable Overrides the Heating Event!
Cool Enable Overrides the Cooling Event!
Vibration Enable Overrides the Vibration Event!
Emergency Power OffDisables all chamber systems, turning power offto
them!
Note:
Some chambers have other optional control switches. Please see manual addendum
for your custom options and controls.!
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Operation
Check chamber functions and your personal understanding of the system before
installing product to be tested, by following these steps with an empty chamber.!
A. Verify that all utilities are on-line before operating equipment. !
a.#Compressed air is required to operate cooling, vibration systems, purge,
and auto door latches on some models. !
b.#Liquid nitrogen is required for proper cooling. (Empty or low LN2tanks
produce a mixture of liquid and vapor which will not properly cool the
chamber.) !
c.#Proper voltage and phase electrical supply are necessary for full heating
capability.!
B. With all function switches in OFF position, turn ON main disconnect switch if
not already on. Then open compressed air service valve and liquid nitrogen
supply valve.!
C. Connect Accelerometer to Input 1 this is default control channel!
D. Be sure all doors are closed securely. Close doors by manually pushing
closed as far as possible, then operate door close switch or manual door
latch.!
E. Some models are equipped with a programmable event to shut down the
chamber at the end of a program. If fans do not start when reset switch is
operated, check status of this event and also verify that all doors are closed
and door sensors are properly sensing door closures.!
F. Some Models with HanseView Analysis have optional output control This
allows you to use 1 or more selectable accelerometers as control defiled in
Test Profile.!
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