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Model 688 - MultiRack Optic / Thermistor Rack Control:
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Below are the features and description of our Model 688 MultiRack Optic / Thermistor Rack Control. To download the various PDFs, right-click the download link and select "Save Target As".
 
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Model 688 MultiRack - Overview

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Adds the capability to operate loading racks to trucks equipped with one of the SeeLeveL family of gauges.
Model 688 MultiRack - Features

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Allows the SeeLeveL truck gauge to control an optic or thermistor style loading rack.
Provides unparalleled loading flexibility for a range of products such as crude oil, condensate, or chemicals without any changes to the system.
The system allows the MultiRack to be used in conjunction with a SpillStop to provide overfill protection for both PTO pump loading and rack controlled loading.
Proven SeeLeveL reliability eliminates probe problems in unrefined products.
Diagnostic LEDs provide visual indication of rack plug condition and permit status.
The MultiRack circuitry runs entirely on rack power - no truck power is required.
Fibre optic connection between gauge and MultiRack provides total electrical safety.
Operation from -40 to +60 oC(-40 to +140 oF) ambient temperature.
Easy installation and servicing, uses standard rack plugs.
One year limited warranty.
Model 688 MultiRack - Description

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For the 810PS2 SeeLeveL gauge, the MultiRack system consists of a 688M MultiRack Driver Module, a fibre optic interconnect cable, and a 688S (single compartment) or 688D (dual compartment) rack controller. The gauge module is installed inside the SeeLeveL and connected to alarm 4.
For the 808P2 SeeLeveL Special gauge, the MultiRack system consists of a 688M MultiRack Driver Module, a fibre optic interconnect cable, and a 688S (single compartment) or 688D (dual compartment) rack controller.
In both cases, the fibre optic cable carries a pulsed light signal from the module to the rack controller to tell it to permit loading. The rack controller is wired to the appropriate sockets for connection to the loading rack. When the gauge detects an overfill situation, the pulse light signal is turned off by the module and the rack controller goes to non-permit, which shuts down the loading rack.
To learn more, please read our Owners Manual [PDF].
Home > Transport Applications > Model 672C

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