ESPEC Safety Options

Battery spark resistant construction
Battery spark resistance

The battery spark resistant construction option protects from igniting volatile gasses.

All of the fan blades and motor ports are aluminum and sheathed heaters are temperature limited.

This option is used to reduce the potential for generation of sparks in the chamber workspace or plenum area. The use of low watt density heaters reduces the operational temperature of the chamber based on the AIT of the substance being tested.

There is a combination pilot light and reset pushbutton that is used to indicate and reset, respectively, the sheath heater controller in the event of an overheat condition. The controller itself is preset at the factory to match AIT specified at time of order.

Battery pressure relief blow-out port
Battery pressure relief port

The battery pressure relief blow-out port relieves pressure inside of the chamber (approx. 1.4psig) The battery chamber cage is discontinued but a flange is provided for customers vent connection instead.

There is a side-wall mounted pressure relief port which is an alternate design instead of it being on top.

Note: Gasses may be released.

Battery fire detection system
Battery fire detection

The battery fire detection system detects fire and shuts down the chamber. It also includes a red alarm light and audible horn (extends approx. 11 in. above top of top of chamber).

Battery chamber ventilation blower with vent
Battery ventilation blower

The battery chamber ventilation blower with vent purges the chamber with room air. It is also activated by a gas monitoring system.

This option purges the chamber with ambient air. The blower supplies ambient air into the chamber through a port with “flapper” check valve which closes when the vent blower is off. Exhaust from chamber is via a “star washer” port in the chamber ceiling. Outlet port has external flange for connection of exhaust duct.

A 3-position selector switch is used to choose the mode of ventilation operation:
AUTO: Blower turns on when gas monitor reaches a warning level
OFF: Blower is off
ON: Blower runs continuously

Battery gas monitor systems
Battery gas monitor

The battery gas monitor systems samples the chamber air for gasses, one-gas or two gas systems (H2 or CO)

This option monitors the build-up of Hydrogen (H2) and Carbon Monoxide (CO) in the chamber during operation. The monitors measure each gas in parts per million. The monitor controller has a “warning” level that starts the vent blower and lights an amber stack light for indication. If the level of gas increases, the monitor controller activates a “fault” level switch that stops the chamber and illuminates a red stack light.

A 2-position key switch is used to enable/disable gas monitor alarms.
ENABLED: The system operates as described above.
DISABLED: The amber stack light indicator is turned on, this is a warning that the chamber is NOT
PROTECTED by the gas monitor. The blower will not turn on if in AUTO mode. The chamber will not fault and shut down, nor will the red stack light illuminate.

The system should only be disabled in rare instances. For example, running the chamber at high temperature and high humidity will cause the system to read elevated levels on the monitored gases.

Battery fire suppression system
Battery fire suppression

The battery fire suppression system option suppresses fire with CO2 inside the chamber. It is activated cy the fire detection system.

Battery automatic door lock and door switch
Battery auto door lock

The battery automatic door lock and door switch option prevents operator access during operation and stops the chamber if the door is open. It also keeps the door closed if an explosion occurs.

Battery reinforced door latch
Battery door latch reinforced

The battery reinforced door latch option keeps the door closed if an explosion occurs.

Protects personnel by preventing the chamber door from opening during internal pressure “event” (up to 1.4 psig)
(Note: Latch will not prevent chamber damage from pressure “event.”)

Battery product overheat with product sensor
Battery overheat product sensor

The battery product overheat with product sensor option protects the battery samples from exposure to high temperatures. It is also helpful for “thermal runaway” of cells.

This option is used for the protection of test product from temperatures higher than desired. A set-point selector for the POHP is located on the chamber control panel area. The user must set the appropriate high temperature limit that is necessary for protection of their test product. The POHP will “trip” when the product temperature has risen higher than specified by the set-point selector. When the POHP has tripped, the chamber will shut down and “Overheat Alarm” is indicated on the touchscreen display. To reset the fault, the user must wait for the product temperature to drop below the product overheat protection setpoint and then reset the controller by cycling the controller “power” button.

Battery product drip tray
Battery drip tray

The battery product drip tray option is a removable tray that catches corrosive leaks.

Battery port plug restraint

The battery port plug restraint option is a cover to keep the port plug from flying out.

Removable vertical rod across the outside of the chamber port plug, restrains the plug during a chamber pressure event. The port plug restraint is mounted on the exterior of the chamber, in any location where cable ports are installed.