Rki-instruments GD-70D Series Manual do Utilizador Página 14
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1 Overview 1-6. Block diagram
GD-70D - 14 -
<Wall-mounted Unit>
1-6. Block diagram
<Electric Diagram>
Mounting hole: A hole for wall-mount.
Terminal plate: A terminal to which a power supply, signal
cables and other external wires are connected
(
10P
)
.
Lock lever: A lever to lock the main unit.
Sensor unit
Controller
(CPU)
Flow
sensor
Pump
POWER
INPUT(DC:24V)
Power supply
Gas alarm contact (ALM1,
A
LM2)
Fault alarm contact (FAULT)
* Standard setting of contact
activation
• De-energized
(De-energized at a
normal environment)
• ON-ALARM
(Closed contact at an
alarm time)
Alarm contact controller
Transmitter
4-20 mA specification: 4-20 mA
DC Transmission
NT specification: digital data
transmission
Pump
control
circuit
Amplifier
Controller
(CPU)
Display
(POWER)(ALM1)(ALM2)(FAULT)
LCD
Operating unit
(MODE)(▲)(▼)(TEST/SET)
- Gas Detector Head 1
- GD-70D Series 1
- Preface 2
- <Contents> 3
- Important Notices on Safety 4
- <Precautions> 5
- CAUTION 5
- Overview 6
- 1-3. Product specifications 7
- GD-70D - 8 8
- <Appearance> 9
- 1-5. Units description 11
- CAUTION 12
- - 13 - GD-70D 13
- 1-6. Block diagram 14
- - 15 - GD-70D 15
- Installation 16
- (Unit: mm) 20
- - 21 - GD-70D 21
- 2-3. How to wire 23
- Dedicated 24
- Position the 25
- WARNING 26
- - 27 - GD-70D 27
- <How to tube> 28
- 2-4. Relocate 29
- 2-5. Disposal 29
- How to Operate 30
- WARM UP 31
- GD-70D - 32 32
- 3-5. Modes 33
- GD-70D - 34 34
- Detection Mode 35
- <Contact Activation> 36
- 4-2. Fault alarm activation 37
- GD-70D - 38 38
- 4-4. Other functions 40
- <Sensitivity Correction 41
- Function> 41
- GD-70D - 42 42
- PW A1 A2 F 43
- User Mode 44
- PW AL1 AL2 F LCD 46
- PW A1 A2 F LCD 47
- Regular Maintenance Mode 48
- Environmental Setting 1 53
- PW A1 A2 F LCD 54
- Environmental Setting 2 55
- PUMP CK 59
- PW A1 A2 F LCD 60
- PW A1 A2 F LCD 61
- Maintenance 62
- Exhaust 64
- Calibration 64
- 8-4. How to replace parts 68
- Replacement of Pump Unit 69
- Replacement of Flow Sensor 69
- Troubleshooting 71
- 9 Troubleshooting 72
- - 72 72
- Definition of Terms 74
- Detection principle 75
- GD-70D - 76 76
- - 77 - GD-70D 77
- GD-70D - 78 78
- <Semiconductor Type> 79
- <Galvanic Cell Type> 80
- Warranty Policy 81
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