GasTech GTD2000-Tx, Руководство оператора

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4.2. Description of components
No
. Name Description
1.
Detector Housing Body
Protects Sensor and built-in PCB Board from external environment
and shock.
2.
Detector Housing Cover
Is assembled with Detector Housing Body, and has a circular glass
top through which LCD displayed Measuring Value can be seen.
3.
AMP PCB
Amplifies the tiny Output generated by Sensor Element, converts it
to 4-20mA.DC by converting a standard Output, and transmits the
Data to the Display unit.
4.
Display PCB
Displays the Data from AMP / Terminal (Transmitter) PCB to LCD
display (Measuring Value), and indicates the power status with the
Power Lamp.
5.
Power/Signal Terminal
CN9 is composed of DC18V ~ 31V power supply and a DC 4 ~
20mA standard Output Connection terminal (VISO, +24V, mA,
GND).
6.
Sensor Terminal
CN8 is Sensor Connection Terminal.
7.
Power LED
This Lamp is ON when Power is supplied.
8.
Function Switch
In Measuring Mode, touching this Switch for 2 sec with Magnet-
Bar will enter to Function Setting Mode; or will store changed Data
in Function Setting Mode.
9.
Reset Switch
Touching this Switch once with Magnet-Bar will cancel the
Parameter setting, or return to the previous condition.
(Every touch will return the Mode one previous step).
10.
↑(UP) Switch
Touching this Switch once with Magnet-Bar will convert one step
or increase the displayed value in Mode conversion or number
change.
11.
↓(DOWN) Switch
Touching this Switch once with Magnet-Bar will convert one step
or decrease the displayed value in Mode conversion or number
change.
12.
External Earth Ground
The outside of the Detector should be grounded to protect the
circuit from external Noise or strong electric field.
13.
Mount Hole
(
ø
7×2ea)
This Hole is used to secure the Gas Detector on exterior walls and
other installation places.
14.
Sensor
Actually detects the gas leak, which is converted to electric signal
and transmitted AMP PCB.
15.
Conduit Connection
This is provided for the inlet for power supply and Measuring
Output signal. Cable connector has 3/4 ", 1/2" PF or NPT
(Default spec. is PF 3/4".)