Name: GX-3R Pro with TIIS Approval (now available)
Brand: RKI Instruments

Overview

The GX-3R Pro is the world’s smallest 5-gas monitor weighing only
4.58 ounces and fits in the palm of your hand (2.9” W x 2.6” H x 1.06” D).
It simultaneously monitors and displays 5 different gases. In addition to monitoring standard confined space gases, LEL, O2, CO, & H2S, the
GX-3R Pro has a 5th channel where you can add infrared or toxic gas sensors (Hydrogen Cyanide (HCN) and Nitrogen Dioxide (NO2) sensors are currently available for the GX-3R Pro). Two of the four sensor slots have interchangeable sensors providing flexible configurations, which can easily be changed in the field.

RKI is pleased to announce the availability of These 2 sensors are in stock and are the latest in toxic gas options added to the line of GX-3R Pro sensors.

The GX-3R Pro comes equipped with Bluetooth wireless communication, man-down alarm, the choice of alkaline or rechargeable power supply, and a 3 year warranty. The Lithium-ion battery pack will operate for 25 hours and will fully charge in 3 hours.

The GX-3R Pro utilizes Bluetooth communication to display direct gas readings from the instrument to a phone app, which is available free on either iOS or Android phones. Automatic notifications can be programmed to send text or email messages if there is an alarm event from the
GX-3R Pro.

Safety supervisors will appreciate the non-compliance indicator. The instrument flashes it’s 3 LED lights every 30 seconds in the following conditions; if the instrument has not been bump tested, or if calibration is due, or if there was a gas alarm event. The 3 LED lights will continue to flash once every 30 seconds until the non-compliance condition has been resolved. The 30 second interval is adjustable.

* 3 year warranty on material and workmanship including sensors (1 year for Ammonia sensor)

FAQ about TIIS vs ATEX/CSA certification PDF Download Link

FAQ about TIIS vs ATEX/CSA certification

Are there differences in product specifications between the ATEX/CSA and TIIS versions of the GX-3R?
No. Both versions are identical in every aspect except for the certification labels.

Is TIIS intrinsically safe for Class 1, Division 1 explosion proof environments?
Yes. The TIIS-certified GX-3R & GX-3R Pro are subjected to the same IEC safety standards as the ATEX/CSA GX-3R & GX-3R Pro.

Can I use a TIIS certified GX-3R in North America?
Yes. The TIIS versions are identical to the ATEX/CSA versions in every aspect and pass the same safety standards for the certification labels as the ATEX/CSA.

Why do I have to submit the Acknowledgement Form?
It is solely for RKI’s internal records that the end user acknowledges their new order is the GX-3R with the TIIS certification. The Acknowledgement Form is not a waiver or release form. Link to Acknowledgement Form

If I accept the Acknowledgement Form, am I liable in some way?
No. If there are any product failures on the GX-3R with TIIS certification, RKI takes full responsibility just as it would with the CSA versions. The GX-3R with TIIS certification is covered under warranty just like any of RKI’s other product lines. Link to Acknowledgement Form

Are the part numbers different?
The part # are the same as the existing GX-3R part numbers and just have a “-T” added to the end.

For example:
72-RA-C is the part number for a 4-gas GX-3R (ATEX/CSA) with Li-Ion battery pack.
72-RA-C-T would be the part number for the 4-gas GX-3R (TIIS) with Li-Ion battery pack.

Are the prices the same?
Yes.

How soon can the GX-3R with TIIS certification be shipped?
Once you have completed the acknowledgement form and requested your order change with customer service, you will receive a confirmation email with your new scheduled ship date within the day.

Can I revise my current GX-3R (ATEX/CSA) order to the TIIS version?
Yes, absolutely. Contact RKI’s customer service with the purchase order number you would like to revise and customer service will send a confirming email with the new ship date.

Does OSHA approve the TIIS certification?
No, but they do not approve the ATEX/CSA certification either. OSHA does not approve any Intrinsically safe certification body. They simply recommend the use of an instrument which has a third-party verification performed.

Can I use the label from an older GX-3R and put it on the TIIS approved GX-3R?
No. The certification labels can only be applied by the manufacturer.

Are TIIS versions of the GX-3R in English?
Yes. The TIIS and CSA/ATEX versions are identical in every aspect except for the certification labels.

When will the hold on the ATEX/CSA certification end?
The hold is expected to be released in January or 2024.

Applications

Personal monitoring
Confined spaces
Refineries/petrochemical
Utilities
Oil and Gas
Water/Wastewater
Fire Services
Construction

Specifications

Detectable Gases
Gas		Measuring Range (Increments)	Accuracy Statement	Preset Alarms
Sensor Slot 1: Carbon Monoxide (CO) & Hydrogen sulfide (H2S) *Interchangeable
H2S / CO	Dual EC	0 ~ 2000 ppm (1 ppm)	± 5% of reading or ± 5 ppm CO	A1: 25 ppm│ A2: 50 ppm │ A3:1200 ppm│TWA: 25 ppm │ STEL: 200 ppm
H2S / CO	Dual EC	0 ~ 200.0 ppm (0.1 ppm)	± 5% of reading or ± 2 ppm H2S	A1: 5 ppm│ A2: 30 ppm │ A3: 100 ppm│TWA: 1.0 ppm │ STEL: 5.0 ppm
H2S Only	EC	0 ~ 200.0 ppm (0.1 ppm)	± 5% of reading or ± 2 ppm H2S	A1: 5 ppm│ A2: 30 ppm │ A3: 100 ppm│TWA: 1.0 ppm │ STEL: 5.0 ppm
CO H2 Compensated	EC	0 ~ 2,000 ppm	± 5% of reading or ± 2 ppm CO	A1: 25 ppm│ A2: 50 ppm │ A3: 1200 ppm│TWA: 25 ppm │ STEL: 200 ppm
Sensor Slot 2: Combustibles (Methane as standard)
CH4 / HC	Catalytic	0 ~ LEL (1% LEL)	± 5% of reading or ± 2 % LEL	1st: 10% LEL │ 2nd: 25% LEL │ 3rd: 50% LEL │ Over:100% LEL
Sensor Slot 3: Oxygen (O2)
O2	EC	0 ~ 40.0% Vol. (0.10%)	± 0.5% O2	Low 1: 19.5%│ Low 2: 18.0% │High: 23.5%│ Over: 40.0%
Sensor Slot 4: Toxics & CO2 *Interchangeable
HCN	EC	0 ~ 30.0 ppm (0.1 ppm)	± 10% of reading or ± 5 % of full scale	A1: 5.0 ppm│ A2: 10.00 ppm │ A3: 30.00 ppm│ TWA: 4.7 ppm │ STEL: 10 ppm
NH3		0 ~ 400.0 ppm (0.5 ppm)		A1: 25.0 ppm │ STEL: 1.0 ppm│ A2: 35.0 ppm│ TWA: 0.30 ppm│A3: 300.0 ppm
NO2		0 ~ 20.00 ppm (0.05 ppm)		A1: 2.00 ppm│ A2: 4.00 ppm │ A3: 20.00 ppm│ TWA: 0.20 ppm │ STEL: 1.00 ppm
PH3		0 ~ 20.00 ppm (0.01 ppm)		A1: 0.30 ppm │ STEL: 1.0 ppm │ A2: 0.60 ppm │ TWA: 0.30 ppm │ A3: 0.60 ppm
SO2		0 ~ 100.0 ppm (0.05 ppm)		A1: 2 ppm│ A2: 5 ppm │ A3: 100 ppm│ TWA: 0.25 ppm │ STEL: 0.25ppm
CO2 %	IR	0 ~ 10.0% Vol. (0.01%)	± 5% of reading or ± 2 ppm	A1: 0.50% Vol.│ A2: 3.00% Vol. │ A3: 4.00% Vol.│ TWA: 0.50% Vol. │ STEL: 3.00% Vol.
CO2 ppm	IR	0 ~ 10,000 ppm (20 ppm)	± 5% of reading or ± 2 ppm	A1: 5,000 ppm│ A2: N/A │ TWA: N/A│STEL: N/A

Common Specifications
Sampling Method	Diffusion sampling standard (hand aspirator or clip-on motorized pump optional)
Display	Full dot LCD with Autobacklight and Autorotation
Alarm Types	Gas Alarm		Trouble Alarm
	2 increasing alarms STEL TWA Over scale alarm O2 decreasing/ increasing		Sensor disconnection Low battery Circuit error Calibration range error Cal or bump due alarm
	• Man Down Alarm • Panic Alarm
Display of Alarm	Gas Alarm		Trouble Alarm
	Flashing LED’s Continuous buzzer (100 db @ 30cm) Flashing gas value Vibration		Flashing LED’s Intermittent buzzer (95 db @ 30cm) Display of error message
Operating Temp. & Humidity	-20°C ~ +50°C [ -4°F ~ +122°F ] 10 to 90% RH, non-condensing (continuous environment)
	-40°C ~ +60°C [ -40°F ~ +140°F ] 0 to 95% RH, non-condensing (temporary environment)
Response Time	Within 30 seconds (T90)
Power Source	Config	Li-ion		Alkaline
	4-gas + EC	25 hours		16 hours
	4-gas + EC with Bluetooth	23 hours		14 hours
	4-gas + IR	16 hours		7 hours
	4-gas + IR with Bluetooth	15 hours		6 hours
Dimension & Weight	2.9” W x 2.6” H x 1.06” D (Approx. 73 W x 65 H x 26 D mm), 4.58oz (with rubber boot)
Case Material	Dust and water resistant to IP-66/68 (2m,1h) approval. Drop height 23 ft
Bluetooth Communication	BLE: with iOS and Android phone app: RK Link
Datalogging	Logs user ID, station ID, Calibration & Bump Test history, Alarm Events & Alarm Trends
Standard Accessories	Alligator clip, protective rubber boot, charger, calibration adapter
Optional Accessories	Padded carrying case RP-3R Attachable sampling pump with 4” rubber nipple, 10’ hose and probe (up to 40’ hose available) USB to IrDA downloading cable for datalogger SDM-3R calibration station Hand aspirator
Safety Design / Approvals	TIIS
Warranty	Three years material and workmanship including sensors (1 year for Ammonia sensor)

Parts

Part #	Description
07-6054	Sensor gasket, GX-3R Pro
07-6055	Sensor case o-ring, GX-3R Pro
10-1086	Screw with flat and lock washers, M2 x 4 phillips
10-1087	Screw for GX-3R Pro sensor cap & battery pack
13-0112RK	Wrist strap
13-0124	Alligator Clip with installation screws
13-0125	Belt Clip with installation screws
20-0335	Rubber boot for GX-3R Pro
21-1950	LCD protective film for GX-3R/GX-3R Pro
21-1960	Bottom cover (sensor cap), GX-3R Pro
21-1961	Sensor retainer, GX-3R Pro
29-0700	Sensor case label for GX-3R Pro, CO/H2S / LEL /O2 /Toxic
33-0184-10	Sensor dust filters with internal gasket for GX-3R Pro, 10-pack
33-0554	Buzzer protection cover for GX-3R Pro
33-7130	Scrubber disk filter for H2S/CO sensor 5-pack
33-7131	Scrubber disk filter for LEL sensor, 5-pack
33-7132	Scrubber disk filter, charcoal, for CO & H2 comp CO sensor, GX-3R/GX-3R Pro, 5-pack
33-7133	Humidity filter disk for H2S sensor, GX-3R/GX-3R Pro, 5-pack
33-7134	H2S scrubber disk for SO2 sensor, GX-3R Pro, 5-pack
49-1625	Li-Ion battery pack for GX-3R Pro
49-1626	Alkaline battery pack for GX-3R Pro
ESR-A13D-SO2	Sensor, SO2 for GX-3R Pro
ESR-A13I-H2S	Sensor, H2S for GX-3R/GX-3R Pro
ESR-A13P-CO	Sensor, CO, GX-3R/3R Pro
ESR-X13P-OXY	Sensor, O2 for GX-3R/GX-3R Pro
ESR-A1CP-CO-H	Sensor, CO with H2 compensated for GX-3R/GX-3R Pro
ESR-A1DP-COHS	Sensor, H2S/CO combo for GX-3R/GX-3R Pro
NCR-6309	Sensor, LEL for GX-3R/GX-3R Pro
IRR-0409	Sensor, CO2, 0-10% volume for GX-3R Pro
IRR-0433	Sensor, CO2, 0-10,000 ppm for GX-3R Pro

Video

This video is also available on YouTube and CD (by request)

Downloads

GX-3R Pro Software
Datalogging Software (version 06228)	IrDa Reprograming Instructions (step by step procedure)

Literature & Manuals
GX-3R Pro Manual TIIS Approved Version
GX-3R (Pro) Quick Reference Card
Certificates / Approvals
TIIS Certificate

Distributor Resources

GX-3R Pro Price List & Resources
Sensor Specifications

(for Authorized Distributors)

GX-3R Pro with TIIS Approval (now available)

Confined Space 5 Gas Monitor

Features

Detectable Gases

Common Specifications

GX-3R Pro Software

Literature & Manuals

Certificates / Approvals

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