AMC AMC-1225 Instrukcja obsługi - Strona 6

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3 PRODUCT DESCRIPTION

In this section a general product description is given followed by a detailed list of the AMC-1224,

1225 unit's internal features.

The AMC-1225 sensor unit provides continuous, reliable surveillance of surrounding air for

traces of hazardous gases that are listed in the Product Information Section. This unit is

designed to allow interconnection in series as in a "daisy chain" configuration (refer to Figure

4-3) to a single or multi-channel AMC-1A series monitor or so equipped inputs of other AMC

Gas Monitors. A maximum of eight (8) sensors can be connected to each zone. The units can

also be branched out from the central line allowing maximum flexibility. Each unit provides Low

alarm, High alarm and sensor Fail signals, which are transferred from one sensor to the next

down the line back to the monitor.

Each sensor module features alarm indicators, adjustment trimmers and connection terminal

blocks as listed and described below.

1) SENSOR: Long life solid state, no maintenance, factory calibrated

2) HIGH ALARM INDICATOR: High levels of gas are indicated by an illuminated red

LED.

3) LOW ALARM INDICATOR: Low levels of gas are indicated by an illuminated yellow

LED.

4) POWER / FAIL INDICATOR: Power is indicated by an illuminated green LED. A

sensor failure causes the green LED to turn OFF.

5) HIGH ALARM ADJUSTMENT: Sets the high alarm trip point.

6) LOW ALARM ADJUSTMENT: Sets the low alarm trip point.

7) SIGNAL ADJUSTMENT: Sets the sensitivity of the sensor.

8) TERMINATING JUMPERS: Jumper clips are supplied installed on the circuit card.

When connecting additional sensor modules, the jumper clip corresponding to the

terminal block must be removed. Refer to section 4.2.2 TERMINATION for more

details.

9) OUTPUT TERMINAL BLOCK: The output terminal block, labeled (-,s,+), connect to

the (-,s,+) terminals in the monitor, or to the input (-,s,+) terminals of another sensor

module.

10) INPUT TERMINAL BLOCKS: The input terminal blocks, labeled (-,s,+), are used to

connect additional sensor modules. Each unused input terminal block must be

locked-out using a terminal jumper, see

AMC-1225 SENSOR MODULES

Figure 3-1

– JP1, JP2.