H&H Environmental Services:

Repair, Maintenance and Calibration Services

At H&H Environmental Systems, we specialize in the expert repair, maintenance, and calibration of environmental chambers for a wide range of applications. Our RBF (Repair Before Failure) preventative maintenance program combines real-time monitoring, maintenance and repair. As a result of our dedicated service philosophy, years of experience and “word of mouth” customer base expansion we have handled an array of chambers that are designed for temperature, humidity, altitude, combined environmental, Halt/Hass and steady-state chambers. We provide retrofits services for controller/programmers including custom touchscreen software programs, digital humidity monitoring and air drier installation. Additionally, we provide EPA certified refrigerant/oil retrofits to meet the ever-changing EPA standards.  Our repair programs are specifically tailored to the customer’s requirements.

We perform major and minor repairs, complete chamber overhauls and chamber mapping and validation implementing procedures per ISO 17025. Our team employs state-of-the-art chamber networking solutions for remote monitoring, programming, and off-site alerting capabilities. As an experienced chamber solutions provider, we can offer turnkey support for numerous services, from start-ups and reconditioning to installations and custom manufacturing. Using a remotely connected, real-time service monitoring system (with customer consent), we’re always aware of when a customer’s chamber requires service. Ex. oil and refrigerant pressures, electrical anomalies and maintenance and calibration cycle. Our programmers can perform PLC retrofits that feature full PID control, over/under monitoring, I/O expansions, scanning, logic editing, and data logging. Our facility fields the resources to support customers across all aspects of environmental chamber maintenance and repairs.

We can provide additional services such as chamber lease and rentals, failure analysis, research, welding, heat treating, environmental simulations, consulting, diagnostics, and more. As a quality oriented company, we can conform to standards by ISO 9001:2015, ISO/IEC 17025, ITAR, COMSEC. MIL-SPEC, and EPA. We’ve worked on environmental chambers for numerous industries including aerospace, HVAC, military, nuclear, packaging, cryogenics, consumer goods, semiconductors, robotics, medical devices, and many more. To learn more about our repair, maintenance, and calibration services, please contact us

General Capabilities:

  • ISO 9001:2015 Accredited
  • ISO/IEC 17025 Compliant
  • Repair
  • Calibration
  • Maintenance
  • Installation
  • Repair Before Failure Program
  • Controller Retrofits
  • Refrigeration Retrofits
  • Air Drier Installation & Maintenance

Repairs & Services:

  • Environmental Chambers: Temperature, Humidity, Altitude & Combined Environment
  • Halt/Hass
  • Shock Chambers
  • Walk-in
  • Steady-state
  • Calibration Recall Alert Program
  • Chamber Validation/Qualification
  • Chamber Evaluations/Recommendations
  • Preventative Maintenance
  • Controller Upgrades
  • Software Implementation and Custom Touch screen Programming
  • Chamber Networking
    – Remote Monitoring, Control, and Programming
    – Off Site Alarm Alerts – Emergency Alarms or Profile Interruption
  • Chamber Start-up
  • Walk-In Chamber Installation
  • Custom Chamber Manufacturing
  • Refrigeration Upgrades
  • Chamber Reconditioning: Equipment Overhauls
  • Preventative Maintenance Scheduling & Notification Program
  • RBF (Repair Before Failure) Program per Evaluation and Preventative Maintenance Reports
  • Establishing Pre-Planned Service Work Schedule for RBF (Repair Before Failure) Program
    Daily Electronic Service Tickets Providing Progress, Technician Hours and Recommendations
  • Electronic Chamber Repair Log
  • Extended Workmanship Warranty to 365 as described in H&H Limited Warranty
  • Installation of New, Reconditioned & Repurposed Test Chambers
  • Refrigerant Recovery
  • Oil Recovery
  • Removal of all discarded Materials replaced during Service Repair
  • PLC Programmer Controller retrofit; Comprised of six module types:

• Integrated on-off or PID control
• Monitoring and over/under temperature limit controller module
• A High-density on-off or PID control module
• High-density limit-only module, an input/output (I/O) expansion module
• A High-density monitor/scanner module
• A data logging and field communications access module

  • HMI Touch Screen: Customized programming of Monitoring Icons, Graphs & Profile Definitions defined by customer programmed by H & H.
  • Networking/Communications/Programming options:

• Ether cat
• Profibus
• USB
• RS232
• RS485 GPIB
• Ethernet
• On board, removable 2G or more SD for redundant data backup
• Graphically programmable
• Excel data logging as frequent as every second
• data and graphs exportable
• Remote operation/view of program and real-time process variables.
• 50 chamber network capability

  • Interface of Variable Frequency Drive Controlling Motor Speed for variable air flow CFM
  • Flexible and scalable allowing mixing and matching of I/O to configure 1 to 152 control loops and up to 256 monitor points
  • Continuous Chamber Temperature Validation Continuous Chamber Air Flow Validation
  • Product control thermocouple logic
  • Air temperature modulated around soft limit set points
  • Programming logic and cascade PID control
  • Digital RH & Dew Point monitor process variable digital output interfaced to PLC controller & HMI. Moisture monitoring requirements for Non-Condensing & Below 0C
  • Thermocouple & Pressure Transducers Safety Circuit:

• Thermocouple logic and display to PLC and HMI monitoring Temperature Safeties
• 3 Pressure Transducers per refrigeration system (Dual Pressure, Oil Pressure)
• Reduces Capillary Tubes – Reducing Refrigerant Leak risk.
• PLC Diagnostics/Remote Monitoring of safety circuits
• Real Time HMI High/Low-Pressure Cut-Out Display, Oil Pressure Cut-out.
• Fast & Efficient diagnostics in conjunction with the diagnostic page on HMI

Additional Services:

  • Chamber Rental
  • Chamber Lease to Own
  • Environmental Simulation Testing
  • Technical Support
  • Retrofit
  • Failure Analysis
  • Consulting
  • Diagnostics
  • Preventative Maintenance
  • Calibrations
  • Repairs
  • Research
  • Retesting
  • Back-up Services
  • Welding
  • Heat Treating

Lead Times:

  • Quoted on job by job basis
  • Quoted on a contractual basis
  • Emergency services available

Industry Focus:

  • Aerospace
  • Automotive
  • Biopharmaceutical
  • Commercial
  • Communications
  • Computer and Electronics
  • Consumer Goods
  • Cryogenic
  • Defense Industry
  • Department of Defense (DOD)
  • Electrical
  • Electronics
  • HVAC
  • Hydraulics
  • Laboratory
  • Manufacturing
  • Marine
  • Medical Devices
  • Military
  • Nano Technology Manufacturing
  • Nuclear
  • Optical
  • Packaging
  • Pharmaceutical
  • Pneumatics
  • Process Gases
  • Pumps
  • Railroad
  • Research
  • Robotics
  • Semiconductor
  • Specialty Machinery
  • Telecommunications
  • Tool & Die
  • Transportation
  • Universities & Learning Institutions
  • Vacuum Electronics

Industry Standards:

  • ISO 9001:2015  –  International Organization for Standardization
  • ISO/IEC 17025
  • ITAR
  • COMSEC
  • Mil-Spec compliant
  • EPA Certified

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