Thermotron_SOW.pdf

Statement of Work (SOW) Environmental Test Chamber, Date: 9-June-2017, Revision: 0

Overall Specifications

Workspace Dimensions 96” W X 120” D X 96” H

Overall Chamber Dimensions 108” W X 208” D X 122” H

Fully hinged door, inside safety release.

Window 24” W X 24” H

Chamber heat 36 kW

Chamber motor two 3 hp

Internal Airflow 3000 scfm ratted blowers (84.9 cubic meter per minute)

Utility Requirements

Electrical power 460/2/60 - 135 full load amps Voltage +/- 5%

Cooling water 75° (23.9°C) 28GPM (106 liter/minute)

Cooling water 85° (29.4°C) 50GPM (189 liter/minute)

30 PSI (2BAR) minimum, 125 PSI (9 BAR) maximum

Floor Drains ¾” FPT Floor Drain

Compressed Air 60 CFM @100 PSIG Clean dry air for air purge

Performance

Overall temperature range -65°C to 175°C

Temperature change rate: Approximate ramp times with a 600 lbs of aluminum billets ( nonlinear using maximum system capabilities.

o 120°C to -54°C (248°F to -65°F) in 69 minutes o -54°C to 120°C (-65°F to (248°F) in 60 minutes

Temperature control tolerance within +/-1.1°C (+/-2.2°F) dry bulb from control point after stabilization at control sensor.

Humidity Range 20% to 95% RH limited by a 7°C minimum dew point and a maximum dry bulb temperature of 85°C

Humidity Control +/- 5% from control point after stabilization at control sensor.

Construction

Interior o Reinforced stainless steel interior liner o Reinforced floor assembly with drains o “Ultra-Lite” non-settling fiberglass insulation o Stainless steel sheet metal conditioning plenum located in the chamber’s rear wall.

o Two interior incandescent lights

Exterior o Welded steel framework construction with covers over openings o Exterior primed and painted Thermotron blue (water-based air dried enamel) o Relief vent o Attached machinery section

Door and Hardware o Left-hinged door provided on the front of the cabinet o Heavy duty latch o (1) 24” W 24” H window located in door

Electrical

One main power supply

Emergency shut off button mounted on console

All electrical components contained in an electrical service compartment, whenever possible

All wiring color coded and identified with numbered labels corresponding to system schematics

Control panel wiring contained in “Panel Channel” or conduit and is easily accessible

Circuits are protected with heat limits, fuses, or circuit breakers

System running time displayed on 8800 Programmer/Controller

Solid state, photo-isolated, zero voltage switching control relays.

Electrical system complies with NEC (National Electrical Code) and meets NEMA-1 (National Electrical

Manufacturers Association) standards.

Conditioning Systems

REFRIGERATION

o A cascade non-CFC refrigeration system o This chamber utilizes (2) 25 hp rated compressors in cascade arrangement o Located in attached refrigeration machinery section o Water-cooled condenser with automatic modulating inlet water valve o Designed to ASHRAE standards o Discharge/Suction Pressure Transducers for monitoring pressures o Compressor discharge/suction temperature monitoring o Cascade compartment insulated and incorporates a stainless steel drip pan with drain

HEATING

o Nichrome open coil heating elements for fast transitions o Proportionally controlled by solid state, photo-isolated relay o Replaceable fusible link, mounted on the heater for positive over-temperature protection of the chamber

AIRFLOW

o High capacity fans (blowers) o Externally mounted motors with a specifically designed one piece extended stainless steel shaft o Bearings located outside temperature conditioned area and sealed and life-time lubricated with hi-temp silicone grease o Temperature conditioning area is separated from the test space by means of a specially designed air distribution system o Air is supplied into chamber near the ceiling on the rear wall plenum, air is returned near the floor

OPTIONAL HUMIDITY

o Externally located stainless steel humidity vapor generator. The generator incorporates sheath immersion heaters, automatic water supply, over-temperature and low water protection o Sheath immersion heaters controlled by solid-state, photo-isolated, zero voltage switching control relays o Thermo-dynamically engineered copper humidity and dehumidification cooling coils with aluminum fins located in the condition plenum o Refrigerated humidity cooling operated by the high stage refrigeration compressor o Electronic sensor system o Humidity water purification system

8800 Programmer Controller

Includes (2) USB Ports, Ethernet, RS-232, 40 GB Hard Drive, Product Temperature Control, and Even

Relay Board o Technical Specifications

1-4 independently programmable channels

Measuring Accuracy: 0.25% of span typical

Selectable °C or °F temperature scale

30 cm (12”) color flat panel touch screen display

Resolution: 0.1°C, 0.1%RH, for other linear applications

Real time clock included

Sample Rate: Process variable sampled every 0.1 seconds

Proportional Band: Programmable 1.0° to 300°

Control Method: Digital

Intervals: Limited only by hard drive space

Interval Resolution: 1 sec to 99 hrs,59 min with 1 second resolution

Operating Modes: Automatic or Manual

Program Storage: Limited by hard drive space

Program Loops:

Up to 64 loops per program

Loops can be repeated up to 9,999 times

Up to 64 nested loops are allowed per program

Outputs:

Alarm: Each channel has configurable “Program Value Limits” for over/under programming protection

Process: Up to 16

System Event: 2 standard; up to 16

Analog: 2 standard up to 16

Inputs:

Analog: 4 available

Inputs 1 & 2: Thermocouple or RTD

Inputs 3-8: Thermocouple

Data Acquisition System

16 Thermocouples

Thermocouple Type: T

Thermocouple range -200°C to +600°C(-328°F to +1,112°F)

THERMOCOUPLE RESOLUTION: 24 bit

THERMOCOUPLE LEVEL FEATURES Standard jacks and included thermocouples provide easy set up for temperature monitoring

Allows for monitoring of 8 or 16 temperatures

DAQ tab on the 8800 touch screen lets user individually name temperatures, view temperature trends and graphs

Data exportable to various Microsoft software applications

General Information

PRE-SHIPMENT

o After completion of manufacture and prior to shipment, the complete system will be tested to ensure compliance with performance specifications, assembly drawings, and the quality control standards of Thermotron. Our customers are invited to witness the final testing of their equipment prior to shipment. Please make arrangements in advance to allow adequate time to be scheduled in the test cycle.

INSTALLATION

o All facilities including but not limited to electrical power, water, drains, compressed air and exhaust to the equipment are the purchaser’s responsibility. The purchaser will also be responsible for any building alterations and any rigging to the final location. It is the responsibility of the customer to make applications, remit fees and secure any and all permits and/or approvals which are required by local, county, state or federal governments concerning the installation and/or start-up of the equipment supplied by Thermotron. Examples include but are not limited to electrical refrigeration, mechanical and building alteration permits and any necessary approvals. The lower undercarriage shall include sufficient key hole style tie down mounts for transportation of this machine by truck

MANUALS

o Thermotron will supply a complete set of operation and preventative maintenance manuals. They consist of the following:

o Operation Manual o Drawings

Electrical

Refrigeration (chamber only)

Cabinet Assembly o Parts list

Electrical

Refrigeration (chamber only)

Cabinet o Instrumentation Wiring Diagram o Major Purchased Components Specifications/Literature o Preventative Maintenance Program Registration Packet

Calibration o New chamber will receive calibration accredited to the ISO 17025 and ANSU/NCSL Z-540-1 calibrations standards by A2LA

Additional options

Tier 2 Thermocouple Level (16)

Computer interface GPIB/IEEE-488

Second Door- Full Opening

Dry Air Purge o Moisture reduction at low temperature with dew points up to -40°C

Quiet Package, Refrigeration o Reduces sound level to less than 74dB.