HM-436
Floor
The Model HM-436 is a steady-state temperature and humidity test chamber specially designed for hydrogen-maser atomic clocks.
With 34.6 cubic feet of workspace, the HM-436 is designed to generate and control temperature and humidity environments at and above +23°C (+73.4°F) at 35% relative humidity.
The test chamber is designed for minimal maintenance. Run long-term tests at a constant, steady-state temperature and humidity, or cycle testing with well-tuned reliability. It is known for its ability to run unparalleled tight temperature and humidity control.
HM test chambers feature heating systems equipped with open ceramic-core nichrome heaters for reliable and accurate temperature control within ±0.5°C (±1.0°F).
The humidity system is tuned to operate at a constant 35% relative humidity. For humidification, a vapor generator system incorporating stainless steel blower wheels is used to introduce water vapor into the chamber. The system utilizes safeties to de-energize the vapor generator in the event of no water to the generator tank. Dehumidification is accomplished with a mechanical refrigeration system.
The cooling system consists of a self-contained, compact, mechanical, single-stage refrigeration system.
The HM-436 has casters to increase mobility and offer flexibility in your laboratory. Two doors, front and back, open fully into the workspace and includes a removable ramp. Two power outlets are housed inside the workspace. A 3-inch port on the right side is centered in the workspace from top-to-bottom and front-to-back.
The standard instrumentation includes two manual-set digital controllers for independent control of the temperature and humidity.
- Specifications
- Standard Features
- Instrumentation
- Safety Features
Specifications
| Interior: | 33.0W x 37.0D x 49.0H (in) |
| 838.2W x 939.8D x 1244.6H (mm) | |
| Exterior: | 48.0W x 50.0D x 81.0H (in) |
| 1219.2W x 1270D x 2057.4H (mm) | |
| Volume: | 34.62 cubic ft |
| 980.32 liters | |
| Temperature: | 23°C to 25°C (73.4°F to 77°F) |
| Humidity: | 35% RH steady state with load |
| Humidity Fluctuation: | ±5% RH at sensor |
| Electrical Supply: | 208 VAC, 1 PH, 50HZ or 60HZ |
| Full Load Amps: | 12 A |
| Facility Power Receptacle: |
NEMA L6-20
|
| Refrigeration System: | Single stage |
| Mobility: | Will fit through 62 in doorway |
| Approximate Product Weight: | 1380.0 lbs (626 kg) without added options |
| Approximate Shipping Weight: | 1490.0 lbs (676 kg) without added options |
Standard Performance
Temperature Only -40° C to +180° C
Temperature & Humidity -40° C to +180° C
| Size | ||
|---|---|---|
| Model | Working Volume | Exterior |
| FD-518 HD-518 | 18.0 cu ft (509.73 l) Interior: 36x24x36 in | 49x60x82 in |
| FD-527 HD-527 | 27.0 cu ft (764.81 l) Interior: 36x36x36 in | 49x72x82 in |
| FD-536 HD-536 | 36.0 cu ft (1,019.46 l) Interior: 36x48x36 in | 49x84x82 in |
| FD-548 HD-548 | 48.0 cu ft (1,358.91 l) Interior: 48x36x48 in | 61x80x94 in |
| FD-564 HD-564 | 64.0 cu ft (22,251.4 l) Interior: 48x48x48 in | 61x92x94 in |
| FD-580 HD-580 | 80.0 cu ft (27,019 l) Interior: 48x60x48 in | 61x104x94 in |
| FD-596 HD-596 | 96.0 cu ft (31,788.5 l) Interior: 48x72x48 in | 61x116x94 in |
Rate of Change Key Thrust: up to 3.9°C/min Impulse: up to 4.0°C/min Warp: up to 6.5°C/min Hyperdrive: up to 9.0°C/min | ||
| 4HP Single Stage Scroll Air-Cooled | 7.5HP Single Stage Scroll Air-Cooled | 12HP Single Stage Scroll or Discus Water-Cooled | 17HP Single Stage Discus Water-Cooled |
|---|---|---|---|
| ↓ 4.5°C/min ↑ 6.0°C/min | ↓ 6.75°C/min ↑ 8.5°C/min | ||
| ↓ 3.75°C/min ↑ 5.5°C/min | ↓ 6.5°C/min ↑ 8.25°C/min | ||
| ↓ 3.0°C/min ↑ 5.0°C/min | ↓ 6.0°C/min ↑ 7.0°C/min | ||
| ↓ 2.5°C/min ↑ 4.75°C/min | ↓ 5.0°C/min ↑ 7.0°C/min | ↓ 6.0°C/min ↑ 7.5°C/min | ↓ 8.0°C/min ↑ 9.0°C/min |
| ↓ 2.0°C/min ↑ 4.0°C/min | ↓ 4.75°C/min ↑ 6.0°C/min | ↓ 5.25°C/min ↑ 6.5°C/min | ↓ 7.5°C/min ↑ 8.0°C/min |
| ↓ 1.5°C/min ↑ 3.5°C/min | ↓ 4.0°C/min ↑ 4.5°C/min | ↓ 4.5°C/min ↑ 5.0°C/min | ↓ 6.5°C/min ↑ 6.5°C/min |
| ↓ 1.5°C/min ↑ 3.5°C/min | ↓ 3.5°C/min ↑ 4.5°C/min | ↓ 4.25°C/min ↑ 5.0°C/min | ↓ 6.0°C/min ↑ 6.5°C/min |
Options: Water-Cooled or Remote Air-Cooled Remote Condensing | Options: Remote Air-Cooled Remote Condensing (Scroll Only) | Options: Remote Air-Cooled | |
*Rise and pull-down rates calculated using IEC 60068-3-5 standard. Custom options available.
*Ideal ambient temperature conditions for test chambers is 23°C (73.4°F). The temperature and humidity range of assured performance is between 15°C and 25°C (59°F/77°F) and 30-50% relative humidity. Conditions outside this range may affect the performance of your test chamber and reduce the lifespan of the equipment.
Notice for California Customers (SB1206):
For test chambers shipped to California, please consult our sales team regarding the use of R449A refrigerant (where applicable). This substitution ensures compliance with SB1206 regulations.
Standard Features
STANDARD FEATURES
- Internal light with external switch
- Forced air circulation
- Standard full opening door, right-hand hinge
- Two 115v, 15a interior outlets
- Full-height battery access door
- Self-contained refrigeration system
- Mechanical dehumidification system
- Steam generator humidity system
- Floor supports 600 lbs
- Live load supported up to 75-100 watts
- Locking swivel casters, set of 4
Instrumentation
STANDARD INSTRUMENTATION
CONTROLLER
2 Independently controlled, manual-set Watlow EZ-ZONE PM controllers for temperature and humidity control (non-programmable)
UPGRADE WITH
HM Series Test Chambers can incorporate AESONE CONNECT creating a robust connected device for a standard and uniform interface making test chamber operation easier.
AESONE XCHANGE increases your functionality 
- Connects the test chamber controller to your network for increased accessibility
- On-board multi-year data logging
AESONE SOFTWARE gives you the power to
- Remote chamber operation and monitoring,
- Web-based test profile creation,
- Viewing current data and historical data visually
- Secure multi-level user access
WATLOW F4T PROGRAMMABLE CONTROLLER. Features a 4.3” capacitive touchscreen minimizing the chance for error. Ethernet communication supported by AESONE HARDWARE. View more controller options
ADDITIONAL ONBOARD INSTRUMENTATION
SENSORS.
for temperature, 100 OHM platinum RTD is highly-accurate sensor made from platinum components for increased sensitivity
for humidity, solid-state sensor for 10-95% relative humidity
View sensor options
COMMUNICATIONS. via RS-485
OPTIONAL DATA LOGGERS. View additional data loggers
Safety Features
STANDARD SAFETY FEATURES
- Internal high-temperature limit safety
- Refrigeration system over-pressure safety circuit
- Low-water steam generator over-temperature circuit
Please Try Again.