TRIP AMPLIFIERS

This replaces the MIN100.

Function: Single Level Trip Amplifier from a single process signal input. The trip action can be arranged so that the Alarm condition can be above (High Trip) or below (Low Trip) the set point, and that the relay can be either normally energised to de-energise in the Alarm condition (Fail-Safe), or normally de-energised to energise in the Alarm condition (Non Fail-Safe).

Power supply: DC powered

	Proof Test Interval SIL Ratings 1 year 6 months 4-20mA Input & High Alarm Trip SIL 2 SIL 2 4-20mA Input & Low Alarm Trip SIL 1 SIL 2 0-10vdc Input & High Alarm Trip SIL 2 SIL 2 0-10vdc Input & Low Alarm Trip SIL 1 SIL 2 Other Inputs (see data sheet) & High Alarm Trip SIL 2 SIL 2 Other Inputs (see data sheet) & Low Alarm Trip SIL 1 SIL 2 This summary applies to BM100's built in Fail Safe mode

This replaces the DIN100.

Function: Single Level Trip Amplifier from a single process signal input. The trip action can be arranged so that the Alarm condition can be above (High Trip) or below (Low Trip) the set point, and that the relay can be either normally energised to de-energise in the Alarm condition (Fail-Safe), or normally de-energised to energise in the Alarm condition (Non Fail-Safe).

Options include: Double Pole Change Over relays

Power supply: mains powered	Proof Test Interval SIL Ratings 1 year 6 months 4-20mA Input & High Alarm Trip SIL 2 SIL 2 4-20mA Input & Low Alarm Trip SIL 2 SIL 2 0-10vdc Input & High Alarm Trip SIL 2 SIL 2 0-10vdc Input & Low Alarm Trip SIL 2 SIL 2 Other Inputs (see data sheet) & High Alarm Trip SIL 2 SIL 2 Other Inputs (see data sheet) & Low Alarm Trip SIL 1 SIL 2 This summary applies to BD100's built in Fail Safe mode

Function: The BU191 is a universally powered Alarm Unit suitable for use with a number of different VA Flowmeters. It can be configured for use as a Low or a High Flow Alarm, as required. Each different VA Flowmeter will require a different sensor head for mechanical reasons but in all cases the operation of the Alarm Unit is the same. The sensor heads supplied come with 1M of cable for connection to the Alarm Unit. The BU191 has an “Instrument Fault” indication LED (Amber) which is triggered following loss of power or loss of connection to the Head. This LED can only be cleared by restoring power or replacing the head, passing the float from the Alarm State to the Healthy State and pressing the RESET button to initiate the Stable condition. The BU191 incorporates a sensitivity adjustment to cater for different VA Flowmeters.

Power supply: universal	Proof Test Interval SIL Ratings 1 year 1 month With BHRAGK41, BH1100 and BH1300 Sensor Heads SIL 2 SIL 3

The A Block is becoming obsolete, therefore please select below as appropriate:

On new projects:	A Block (DC Powered) is replaced by the BM100
	A Block (Mains Powered) is replaced by the BD100

For spares purposes: While stocks last, the A Block and other Alphabet Blocks will continue to be available. Alphabet Availability

Function: Single Level Trip Amplifier from a single process signal input. The trip action can be arranged so that the Alarm condition can be above (High Trip) or below (Low Trip) the set point, and that the relay can be either normally energised to de-energise in the Alarm condition (Fail-Safe), or normally de-energised to energise in the Alarm condition (Non Fail-Safe).

Options include: a remote set-point potentiometer; a variable trip differential; a ten-turn set-point potentiometer; and an AC Current or Voltage input.

Power supply: mains powered

While stocks last, the T Block and other Alphabet Blocks will continue to be available. Alphabet Availability

Function: Single Level Trip Amplifier that has an on-board transmitter loop power supply. The T Block can be manufactured with either a Low Trip set point (alarm condition below the set point) or a High Trip set point (alarm condition above the set point) and with the relay Fail Safe (energised to de-energise in the alarm condition) or Non-Fail Safe (relay normally de-energised to energise in the alarm condition).

Application Notes: The T Block is ideal for use with the Lee-Dickens loop powered Relative Humidity and Temperature transmitters or with the loop powered head mounting Temperature transmitters detailed elsewhere in this catalogue.

Power supply: mains powered

Function: The T100 is a Single Level Trip Amplifier from a single process signal input. The trip action can be arranged so that the Alarm condition can be above (High Trip) or below (Low Trip) the set point, and that the relay can be either normally energised to de-energise in the Alarm condition (Fail-Safe), or normally de-energised to energise in the Alarm condition (Non Fail-Safe).

Options include: a ten-turn set-point potentiometer; a mA retransmitting output; a latching action on the trip relay; an on-board transmitter power supply; a difference between two RTDs input; and a DPDT relay instead of the SPCO relay.

Power supply: mains or DC

Function: The T130 is a Dual Channel Single Level Trip Amplifier, i.e. two Single Level Trip Amplifiers on the one board. The trip action can be arranged so that the Alarm conditions can be above (High Trip) or below (Low Trip) each of the set points, and that the relays can be either normally energised to de-energise in the Alarm condition (Fail-Safe), or normally de-energised to energise in the Alarm condition (Non Fail-Safe).

Options include: remote set-point potentiometers; and ten-turn set-point potentiometers.

Power supply: mains or DC

This replaces the MIN120.

Function: Dual Level Trip Amplifier from a single process signal input. The trip action can be arranged so that the Alarm condition can be above (High Trip) or below (Low Trip) each of the set points, and that the relays can be either normally energised to de-energise in the Alarm condition (Fail-Safe), or normally de-energised to energise in the Alarm condition (Non Fail-Safe).

Power supply: DC powered

Proof Test Interval SIL Ratings 1 year 6 months 4-20mA Input & High Alarm Trip SIL 2 SIL 2 4-20mA Input & Low Alarm Trip SIL 1 SIL 2 0-10vdc Input & High Alarm Trip SIL 2 SIL 2 0-10vdc Input & Low Alarm Trip SIL 2 SIL 2 Other Inputs (see data sheet) & High Alarm Trip SIL 2 SIL 2 Other Inputs (see data sheet) & Low Alarm Trip SIL 1 SIL 2 This summary applies to BM120's built in Fail Safe mode Please note, that for High & Low Alarm trips, the above SIL for Low Alarm Trip should be used

This replaces the DIN120.

Function: Dual Level Trip Amplifier from a single process signal input. The trip action can be arranged so that the Alarm conditions can be above (High Trip) or below (Low Trip) the set point, and that the relays can be either normally energised to de-energise in the Alarm condition (Fail-Safe), or normally de-energised to energise in the Alarm condition (Non Fail-Safe).

Power supply: mains powered

Proof Test Interval SIL Ratings 1 year 6 months 4-20mA Input & High Alarm Trip SIL 2 SIL 2 4-20mA Input & Low Alarm Trip SIL 2 SIL 2 0-10vdc Input & High Alarm Trip SIL 2 SIL 2 0-10vdc Input & Low Alarm Trip SIL 2 SIL 2 Other Inputs (see data sheet) & High Alarm Trip SIL 2 SIL 2 Other Inputs (see data sheet) & Low Alarm Trip SIL 1 SIL 2 This summary applies to BD120's built in Fail Safe mode Please note, that for High & Low Alarm trips, the above SIL for Low Alarm Trip should be used

The AA Block is becoming obsolete, therefore please select below as appropriate:

On new projects:	AA Block (DC Powered) is replaced by the BM120
	AA Block (Mains Powered) is replaced by the BD120

For spares purposes: While stocks last, the AA Block and other Alphabet Blocks will continue to be available. Alphabet Availability

Function: Dual Level Trip Amplifier from a single process signal input. The trip action can be arranged so that the Alarm conditions can be above (High Trip) or below (Low Trip) each of the set points, and that the relays can be either normally energised to de-energise in the Alarm condition (Fail-Safe), or normally de-energised to energise in the Alarm condition (Non Fail-Safe).

Options include: remote set point potentiometers; ten-turn set-point potentiometers; and an AC Voltage input.

Power supply: mains powered

Function: The T120 is a Dual Level Trip Amplifier from a single process signal input. The trip action can be arranged so that the Alarm conditions can be above (High Trip) or below (Low Trip) each of the set points, and that the relays can be either normally energised to de-energise in the Alarm condition (Fail-Safe), or normally de-energised to energise in the Alarm condition (Non Fail-Safe).

Options include: remote set-point potentiometers; and ten-turn set-point potentiometers, a mA retransmitting output; a latching action on the trip relays; a difference between two RTDs input; and DPDT relays instead of the SPCO relays.

Power supply: mains or DC

This replaces the MIN130.

Function: Triple Level Trip Amplifier from a single process signal input. The trip action can be arranged so that the Alarm condition can be above (High Trip) or below (Low Trip) each of the set points, and that the relays can be either normally energised to de-energise in the Alarm condition (Fail-Safe), or normally de-energised to energise in the Alarm condition (Non Fail-Safe).

Power supply: DC powered

This replaces the DIN130.

Function: Triple Level Trip Amplifier from a single process signal input. The trip action can be arranged so that the Alarm condition can be above (High Trip) or below (Low Trip) each of the set points, and that the relays can be either normally energised to de-energise in the Alarm condition (Fail-Safe), or normally de-energised to energise in the Alarm condition (Non Fail-Safe).

Power supply: mains powered

This replaces the MIN140.

Function: Quadruple Level Trip Amplifier from a single process signal input. The trip action can be arranged so that the Alarm condition can be above (High Trip) or below (Low Trip) each of the set points, and that the relays can be either normally energised to de-energise in the Alarm condition (Fail-Safe), or normally de-energised to energise in the Alarm condition (Non Fail-Safe).

Power supply: DC powered

This replaces the DIN140.

Function: Quadruple Level Trip Amplifier from a single process signal input. The trip action can be arranged so that the Alarm condition can be above (High Trip) or below (Low Trip) each of the set points, and that the relays can be either normally energised to de-energise in the Alarm condition (Fail-Safe), or normally de-energised to energise in the Alarm condition (Non Fail-Safe).

Power supply: mains powered

Function: Single Level Latching Trip Amplifier from a single process signal input. Two separate set points allow for setting of the trip set point at which point the relay will be latched and the release set point at which the relay will be unlatched. The AL Block can be manufactured with either a Low Trip set point or a High Trip set point. In both cases as the signal passes Down (for a Low Trip) or Up (for a High Trip) through the trip set point the relay will be energised and will remain energised until the signal passes back through the release set point when it will be de-energised. The AL Block is ideally suited to maintaining levels in a tank between two pre-set levels either for filling using the Low Trip version or for emptying using the High Trip version.

Power supply: mains powered