Detcon PI-600 Instrukcja Użytkownika Pobierz pdf (Strona 4)

3.0.2 Universal Microprocessor Control Transmitter Circuit

he control circuit is microprocessor based and is packaged as a universal plug-in field replaceable module, facilitating

easy replacement and minimum down time. The universality includes the ability to set it for any range concentration

and for any gas type. These gas and range settings must be consistent with the PID Sensor Head it is mated with.

Circuit functions include a basic sensor pre-amplifier, on-board power supplies, microprocessor, back lit alpha numeric

display, fault, alarm, and calibration status LED indicators, magnetic programming switches, an RS-485 communication

port and a linear 4-20 mA DC output.

3.0.3 Base Connector Board

The base connector board is mounted in the explosion proof enclosure and includes: the mating connector for the con-

trol circuit, reverse input and secondary transient suppression, input filter and lugless terminals for all field wiring.

3.0.4 Explosion Proof Enclosure

The transmitter electronics are packaged in a cast metal explosion proof enclosure. The enclosure is fitted with a thread-

ed cover that has a glass lens window. Magnetic program switches located behind the transmitter module face plate are

activated through the lens window via a hand-held magnetic programming tool allowing non-intrusive operator interface

with the sensor. Calibration can be accomplished without removing the cover or declassifying the area. Electrical classi-

fication is Class I; Groups B, C, D; Division 1 (explosion proof).

PI-600 Toxic Gas Sensors PG.4

etcon inc.

Program Switch #2

FLT

ALM

CAL

icroSafe™ Gas Sensor

OU STON, TE XAS

PGM 2

PGM 1

ALM

MODEL PI-600

ONTRAST

Alarm & Cal LEDs

Program Switch #1

Menu Driven Display

Plug-in Universal Microprocessor

Control Circuit

Display Contrast Adjust

UNIVERSAL

RANSMITTER

PPM

VOC

ALARM 1

WHT

BLK

YEL

BLU

VDC Power In

NO/NC

COM

NO/NC

COM

NO/NC

COM

FAULT ALM-2 ALM-1

Alarm Dry Contacts

ALARM 2

FAULT

4-20 mA Output

RS-485 In

RS-485 Out

Optional 4-20 mA

Signal Developing Resistor

Use 250 ohm 1/4w

JUMPERS

UN-USED

Jumper Programmable Alarm Outputs

Normally Open or Normally Closed

Sensor

Place un-used alarm programming

jumper tabs here

PID Sensor Head

Transmitter Electronics

in Explosion-Proof housing

1 2 3 4 5 6 7 8 9 ... 36 37

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