RKI Instruments GD-70D Specifications

FO27-1311/1000

INTELLIGENT GAS DETECTOR

Gas Detection For Life

GD-70D Series

Features

• Monitor combustibles, O2, and a wide range
of toxics

• Plug and play intelligent sensors retain
calibration and sensor data

• Common platform (main unit / sensor / pump)
for all detection methods

• Universal main unit (all sensor types)

• Multifunctional sensor unit (new Intelligent
sensor)

• No internal tubing (main unit) / No coil (pump)

• Front access, no tools required, easy sensor
and pump replacement

• Large size LCD screen

• Various communication methods available
(4-20mA, LonWorks, and PoE)

• Minimal maintenance cost through enhanced
troubleshooting firmware functions

• Small mounting space

• Environmentally friendly

• Wide variety of sensors available

The new Model GD-70D smart gas detection transmitter series sets a new standard for performance, flexibility, and
versatility. The GD-70D sample-draw transmitter offers an array of sensor technologies unmatched in the industry,
including unique offerings, such as our hydrogen-specific or LEL versions.

The long life high capacity pump and wide variety of sensing elements are replaceable in a few seconds, with no
tools required! The smart sensors retain all calibration and sensor-specific data in non-volatile memory, so sensors
can be hot-swapped in the field with no programming required. The sensors also retain calibration information, which
means they can be conveniently calibrated separate from the transmitter, avoiding transport of calibration gases to field
locations. The GD-70D firmware automatically corrects for long-term zero and span “drift” minimizing maintenance and
maximizing reliability.

The GD-70D can be used as a stand-alone device, offering a number of communication protocols to existing PLC

systems, or can be integrated with RKI’s Beacon series of single and multi-channel controllers.

All GD-70D transmitters include a large, easy to read integral LCD display, tri-color bar graph for visual notification of
alarm status, programmable low and high alarm relays, and fault relay. Pump flow is self-tuning for maintenance-free

operation. Because all GD-70D base units are identical, sensors can be interchanged with no programming or tools

required, resulting in maximum flexibility to the user. NEMA 4X 115 VAC versions available.

RKI Instruments, Inc. • 33248 Central Ave. Union City, CA 94587 • Phone [phone] • [phone] • Fax [phone]

World Leader In Gas Detection & Sensor Technology

www.rkiinstruments.com

GD-70D Series

Bright visual

alarm LEDs

Alarm point

Actual Size

Pyrolyzer

connection

Graphical display of
Gas concentration

Flow rate (automatic
adjustment)

Maintenance status

Control
switches

Sensor identication

Cable inlet

Gas concentration

Detection unit of

measurement

Gas detected

Inhibit ofine

communication

for PC

Power switch

Gas inlet/outlet

Tool Free

Maintenance

Sensor Replacement

Specifications subject to change without notice.

Lock lever

Pump Replacement

GD-70D Serieswww.rkiinstruments.com [phone]

Gas Detection For Life

GD-70D Series

MAIN UNIT

Model GD-70D GD-70D-NT GD-70D-ET

Communication 4-20mA DC DC power line communication PoE method

Detection principle Different type depending upon sensor unit and detectable gas (see table)

Sampling method Sample draw (auto-adjustment of ow rate) 0.5 L / min +/-10%

Display

Gas alarms Two alarm levels: 1st alarm - Red 2nd alarm - Red Fault alarm - Yellow

External output 1st, 2nd, and trouble alarms: Relay contact output for each alarm

Self diagnostic function System failure, sensor failure, ow failure, communication error NT / ET / Analog

Datalogging Event history, alarm history, calibration history. Alarm trend (180 sec before / after 1st alarm)

Operation temp. & humidity 0 ~ 40ºC, 30 ~ 70% RH (non-condensing)

Operating settings All operational settings are user adjustable through front panel

Power requirements

Dimensions 2.8”W x 4.7”H x 5.9”D (70W x 120H x 150Dmm)

Weight Approx. 0.9kg (2.0lbs), including sensor unit

Mounting Wall-mounting base plate by 2 or 3 screws

Sampling tubing 4 x 6mm PTFE tubing recommended. Tube ttings provided as standard accessories

Bushing Cable type varies depending on communication method (Cable bushing optional)

• Large LCD display (white backlight) • Gas concentration

• Flow rate, communication status, pyrolyzer status, gas detected • Error code, content of error

DC 24V+/- 10%, approx 1.5W (Max 4W including sensor unit)

Note: Approx. 2.5W (Max 5W) with SGU sensor unit

PoE standard arrangement

SENSOR UNIT

Model ESU SGU SSU OSU NCU

Detection principle Electrochemical cell Semiconductor Pyrolysis-particle Galvanic cell Catalytic combustion

Gas detected and
detection range

Self diagnosis function Sensor trouble, system failure

Date logging function Event history, alarm history, calibration history, Alarm trend (60 sec. before/after 1st alarm)

Refer to list of
detectable gases

0-2000ppm H2, CH4,
or CH2F2 (R-32) in air

and others

0-15ppm TEOS in air 0-25% O2 in air 0-100% LEL H2, CH4,

and others

PYROLYZER UNIT

Model PLU-70

Application NF3 / TEOS gases detected in air

Usage Used by connecting to “GD-70D” (Main unit)

LED (Green color)

Power Lamp

Self-diagnostic function

Operating temp. & humidity 0-40° C, 30-70% RH (non-condensing)

Operational settings All operational settings are user adjustable through front panel

Power requirements DC 24V+/- 10%, approx. 25W (max)

Dimensions 2.8”W x 4.7”H x 5.9”D (70W x 120H x 150Dmm)

Weight Approx. 1.2kg (2.6lbs)

Mounting Wall-mounting base plate by 2 or 3 screws

Sampling 4x6mm PTFE tubing recommended. Tube ttings provided as standard accessories

Bushing 1.25sq 2 core cable for power supply DC24V (Cable bushing optional)

Normal: Light-on
Warming-up: Flashing at every 1 sec interval
Trouble: Flashing at every 0.2 sec interval

Pyrolyzer unit trouble
Fan trouble
System trouble

GD-70D Series[phone]

GD-70D Series

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ESU Gas Detected

Detection

Range

ACGIH

TLV-TWA

Part #

Ammonia NH3 75 ppm 25 ppm GD-70D-NH3

Arsine AsH3 0.2 ppm 5 ppb GD-70D-ASH3

Boron Trichloride BCl3 15 ppm GD-70D-BCl3

Boron Triuoride BF3 9 ppm 0.1 ppm GD-70D-BF3

Bromine BR2 1 ppm 0.1 ppm GD-70D-BR2

Carbon Monoxide CO

Chlorine Cl2

75 ppm ⁕

150 ppm

300 ppm ⁕

3 ppm

1.5 ppm ⁕

25 ppm

0.5 ppm GD-70D-Cl2

GD-70D-CO-

01/02/03/11/12/13

Chlorine Triuoride ClF3 0.6 ppm (C) 0.1 ppm GD-70D-ClF3-A

Diborane B2H6 0.3 ppm 0.1 ppm GD-70D-B2H6

Dichlorosilane DCS 15 ppm GD-70D-DCS

Disilane Si2H6 15 ppm (C) 2 ppm GD-70D-Si2H6

Dimethylamine (CH3)2NH 15 ppm 5 ppm GD-70D-DMA

Diethylamine (CH3CH2)2NH 15 ppm 5 ppm GD-70D-DEA

Fluorine F2 3 ppm 1 ppm GD-70D-F2

Germane GeH4 0.8 ppm (C) 2 ppm GD-70D-GeH4

Hydrogen Bromide HBr

Hydrogen Chloride HCI

6 ppm,

9 ppm ⁕

6 ppm,

15 ppm ⁕

(C) 2 ppm GD-70D-HBR-06/-09

(C) 2 ppm

GD-70D-HCL-

06E/15E

Hydrogen Cyanide HCN 15 ppm GD-70D-HCN

Hydrogen Fluoride HF

9 ppm,

3 ppm ⁕

0.5 ppm GD-70D-HF-03/-09

Hydrogen Selenide H2Se 0.2 ppm 0.05 ppm GD-70D-H2Se

Hydrogen Sulde H2S

1 ppm

30 ppm

1 ppm GD-70D-H2S-01/-30

Methylamine CH3NH2 15 ppm 5 ppm

Nitric Oxide NO 100 ppm 25 ppm GD-70D-NO

Nitrogen Dioxide NO2

9 ppm

15 ppm

3 ppm GD-70D-NO2-09

Nitrogen Tetraoxide N2O4 15 ppm GD-70D-N2O4

Nitrogen Triuoride NF3 30 ppm 10 ppm

Ozone O3 0.6 ppm 0.1 ppm GD-70D-O3

Phosphine PH3 1 ppm 0.3 ppm GD-70D-PH3-AH

Silane SiH4 15 ppm 5 ppm

GD-70D-SiH4

-AH/DH

Silcon Tetrachloride SlCl4 15 ppm GD-70D-/SiCl4

Silcon Tetrauoride SiF4 9 ppm GD-70D-SiF4

Sulfur Dioxide SO2 6 ppm — GD-70D-SO2

Sulfur Tetrauoride SF4 9 ppm GD-70D-SF4

Tetraethyl Orthosilicate TEOS 15 ppm GD-70D-TEOS

trichlorosilane TCS 15 ppm GD-70D-TCS

Trimethylamine (CH3)3N 15 ppm 5 ppm GD-70D-TMA

Tungsten Hexauoride WF6 9 ppm GD-70D-WF6

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SGU Gas Detected

Detection

Range

ACGIH

TLV-TWA

Part #

Carbonyl Sulde COS 2,000 ppm —

Dichloroethene C2H2CL2 600 ppm 200 ppm

Dichlorethylene DCE 600 ppm GD-70D-MDCE

Dichloromethane CH2CL2 2,000 ppm 50 ppm GD-70D-MDCM

Diuoromethane R-32 2,000 ppm 1,000 ppm

Fluoro Methane R-41 2,000 ppm 1,000 ppm

Hydrogen H2

500 ppm ⁕

1,000 ppm ⁕

2,000 ppm

2% Vol.

—

GD-70D-MH2-S500

GD-70D-MH2-S1K
GD-70D-MH2-S2K
GD-70D-MH2-20K

Isopropyl Alcohol CH3CHOHCH3 2,000 ppm 200 ppm GD-70D-MIPA-2K

GD-70D-MCH4-2K

Methane CH4

2,000 ppm

5,000 ppm ⁕ —

GD-70D-MCH4-5K

GD-70D-MCH4-20K
GD-70D-MCH3OH-1
GD-70D-MCH3OH-2

Methyl Alcohol CH3OH

Propane CH3H8

NCU Gas Detected

1,000 ppm

2,000 ppm ⁕

2,000 ppm

5,000 ppm ⁕

Detection

Range

200 ppm

1,000 ppm

LEL % Vol.

Levels

GD-70D-MC3H8-2K

GD-70D-MC3H8-2K

Hydrogen H2 100% LEL — GD-70D-LEL-H2

Hydrogen H2 2% Vol. — GD-70D-H2-20K

Isobutane i-C4H10 100% LEL — GD-70D-ISOB

Methane CH4 100% LEL — GD-70D-LEL-CH4

Methane CH4 2% Vol. — GD-70D-CH4-20K

SSU Gas Detected

Detection

Range

ACGIH

TLV-TWA

Trimethyl Silane TMS 15 ppm — GD-70D-TMS

Trimethoxysilane TRIMOS 15 ppm — GD-70D-TRIMOS

Tetraethyl Orthosilicate TEOS 15 ppm 10 ppm

OSU Gas Detected

Detection

Range

ACGIH

TLV-TWA

Oxygen O2 25% Vol. — GD-70D-OXY

⁕ Special order for non-standard range

Authorized Distributor:

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Toll Free: [phone] • Phone: [phone]

Fax: [phone] •

www.rkiinstruments.com