1.0 General Description
The Type 900 is a dual channel trip amplifier which accepts a signal from a vessel
mounted sensor and operates individual relays anywhere over its input range. When in
‘run’ mode the 4 digit LCD gives a real time reading of the signal from the
transmitter. When in ‘Programme’ mode the LCD provides the user with a menu
system to precisely set the relay ON/OFF points and other parameters. Programming
is achieved via 4 facia push buttons.
Applications include Alarm, Control, Pumping IN and Pumping OUT, fail safe HIGH
and/or fail safe LOW. The Type 900 provides DC power for the input sensor which is
current limited. The input signal is normally a mA current direct from a sensor.
Important Information
This equipment should only be specified, installed and commissioned by suitably
qualified persons. This product contains no user serviceable parts, removing the
product from its enclosure, modification or using other than outlined in the
manufacturers guidelines in any way invalidates the warranty and safety features. The
electrical installation should comply with local regulations. Ensure the correct
instructions are used for the version fitted.
2.0 Mounting, Electrical Installation and Connection
The Type 900 can be mounted using the snap fastener DIN rail or by a screw
fastenings using the hole slots on the lower left and upper right external corners of the
enclosure. The product is intended to be mounted with the power terminals at the
bottom of the enclosure. An air gap of 10mm minimum should be available around
the enclosure perimeter for proper air circulation to prevent overheating.
The Type 900 should not be mounted close to heat sources; electrical noisy apparatus
e.g. welding machines and inverter drives; locations subject to strong vibrations or
shocks; dusty or corrosive gas environments; outdoors in direct sunlight or high
humidity areas.
The crossed out bin symbol placed on the product reminds you of the need to dispose
of the product correctly at the of its life.
Maintenance is not required for this product other than periodic testing if demanded
by the application. External cleaning can be preformed using a mild detergent care
should be taken not to clean the product with aggressive substances they may damage
the enclosure, terminals or label. Cleaning should be performed with the power to live
connections disconnected by means of isolation.
1.