Dover OPW 88 Series - Function Keys; Specifications

Rack Monitor 88XX
Document: Operation Manual
Date: January 2024
Version: A.0 subject to change
Page 20 of 43 – Operations Manual
As soon as the Plug is connected to the truck socket or removed from the active storage hanger the system awakes
and is ready for use. If proper ground and dry sensors are detected the rack monitor will switch to permissive. When
the loading is finished and the plug is removed from the truck it will wait 15 minutes before it goes back to sleep.
Function Keys
To use the Function Key in a hazardous environment the following directives are applicable. The versions will be
available with different colors and different functionality. This to give certain level of authorities within organizations
and their needs for safety procedures.
Specifications inside Function Key Enclosure
Internal Pressure : 80 kPa (0.8 bar) to 110 kPa (1.1 bar) (atmospheric pressure)
Ignition Energy : 0.06 mJ (for electrical apparatus of Group IIB)
Internal Connections : Earthing or equipotential bonding
Expected Lifetime battery : 4 years stand-by
Specifications External Environment
Usage Temperature Range (T
u
) : -45C to +40C
Storage Temperature (T
s
) : -20C to +40C
Max. Surface Temperature (T4) : 135C
IP Class closed : IP54 acc. to IEC 60529
Resistant to : UV Light (within Sun light), Corrosion, Ingress of Gasoline vapors and liquids
: (Diesel) Exhaust fumes, All other weather conditions Explosive Mixtures
External Pressure : 80 kPa (0.8 bar) to 110 kPa (1.1 bar) (atmospheric pressure)
Air : Normal oxygen content, typically 21% v/v
General Specifications
Outline dim. Function Key : Max. width x length x height = 20 x 65 x 15 mm
Material Housing : Polycarbonate
Max. capacitance : 15 pF
Surface Resistance : < 1GΩ at (232)C and (505)% relative humidity
Weight : 13 gr. (0.45 ounces)
Directive Compliance:
ATEX : II 2 G Ex ia IIC T4
The Function Key Rack Monitor 88XX is designed according to the following standards.
Use of Standards:
EN 60079-0 Electrical apparatus for explosive gas atmospheres – Part 0: General requirements
EN 60079-11 Electrical apparatus for explosive gas atmospheres Intrinsic safety ‘I’
EN 60529 Degrees of protection provided by enclosures (IP Code)