Description
RKI Instruments 72-61MBDX-A is the GX-6100 5 gas detector with a built-in pump, a sample-draw gas monitor configured for oxygen (O2), hydrogen sulfide (H2S), carbon monoxide (CO), VOCs (PID, 10.6 eV lamp, 0-4,000 ppm) and hydrocarbons (infrared, isobutane, % LEL and % vol). This configuration ships with the alkaline battery pack (3 AA cells) and no charger, plus the standard accessories RKI lists: rubber boot, belt clip, hand strap, tapered nozzle, probe with hydrophobic and dust filter and a 3 ft Teflon-lined hose. RKI rates continuous operation at 8 hours on the alkaline pack. Built-in sample pump (flow rate 0.45 lpm, 100 foot sample range), two smart-sensor slots that recognise a sensor change, man-down and panic alarms, an LED flashlight, Bluetooth and IrDA, and a library of over 600 VOCs on the PID versions, as RKI describes the GX-6100. IP-67 dust and water resistance (hose and probe excluded). Approvals as RKI lists them: IECEx, ATEX, TIIS, cCSAus, Ex ia IIC T4 Ga, CE marking. Warranty as RKI states it: three years material and workmanship including the R sensors, two years for IR sensors, one year for PID, Cl2 and TE sensors (two months for the 11.7 eV lamp). RKI names the GX-6100 as the alternative to the discontinued GX-6000. Sold individually. Every GX-6100 configuration we stock (333) is on one page with prices. Ships in 1–2 business days; most orders arrive in 3–7 business days.
RKI Instruments 72-61MBDX-A specifications
| Item | RKI Instruments data |
|---|---|
| Part number | 72-61MBDX-A |
| Model | GX-6100 |
| Gases Detected | O2; H2S; CO; VOC; HC IR |
| Number of Gases | 5 |
| Sensors | O2: Electrochemical R sensor; H2S: Electrochemical R sensor; CO: Electrochemical R sensor; VOC: PID, 10.6 eV lamp (600 VOCs), high range; HC IR: Isobutane NDIR smart sensor |
| Sensor Ranges | O2 0-40.0% vol; H2S 0-200.0 ppm; CO 0-2,000 ppm; VOC 0-4,000 ppm, 10.6 eV lamp; HC IR 0-100% LEL / 0-30% vol |
| PID lamp | 10.6 eV (0-4,000 ppm) |
| Smart sensors (slots 5 and 6) | VOC (PID, 10.6 eV lamp, 0-4,000 ppm); Hydrocarbon infrared, 100% LEL / 30% vol |
| Sample Method | Pump (sample draw): Sample draw pump, flow rate 0.45 LPM, 100 foot sample range |
| Battery | Alkaline (alkaline pack takes 3 AA cells) |
| Charger | None |
| Battery Life (model) | 28 hours on Lithium-ion battery pack. Complete recharge in 6 hours. 8 hours Alkaline battery pack (3 AA size in each pack) |
| Configuration code | -A suffix: Alkaline battery pack, no charger |
| Includes | Rubber boot; Belt clip; Hand strap; Tapered nozzle; Probe with hydrophobic and dust filter; 3 ft Teflon-lined hose |
| Alarms | Gas alarm / Man-down / Trouble |
| Display | Digital LCD, autobacklight, peak bar display, auto display rotation, and customize order of gases |
| Communication | Bluetooth, IrDA |
| Audible Alarm | 95 dB at 1 ft. |
| Languages | English, Japanese, French, Spanish, Portuguese, Italian, German, Russian, Korean, Chinese (simplified), Chinese (traditional), Vietnamese, Slovak, Czech, Turkish, Polish |
| Operating temperature and humidity | -4°F to 122°F (-20°C ~ +50℃), 0- 95% RH non condensing |
| Dimensions and weight | 2.6" W x 7.9" H x 2.2" D (H200 x W68 x D56 mm) 17.6 ounce (500g) with lithium battery pack16 ounces with alkaline batteries (450g) |
| Case | Dust and water resistant with IP-67 approval (exclude sample hose and probe) |
| Standard features | 2 Smart sensors slots auto recognize sensor changes Panic alarm and man down alarm Library of over 600 VOC's User defined VOC list. Up to 30 frequently used Recent VOC list for last 8 selected gases Pump and circuit status indicators User & station ID selection menu Datalogging (interval, alarm trend, station and user ID) Snap logging - on demand data logging Demand zero / Auto zero BUMP and CAL expiration alarm Flashlight LEL sensor protection mode |
| Standard accessories | • Rubber boot • Belt clip • Hand strap • Tapper nozzle• Probe with hydrophobic & dust filter 3' teflon lined hose• Benzene pre-filter tubes and holder (benzene versions) |
| Optional accessories | • SDM-6100 calibration station • Bundles with instrument carrying case and accessories • Flexible probes • Up to 100 foot sample hoses • Filter set • IrDA cable |
| Safety design / approvals | IECEx, ATEX, TIIS, cCSAus Explosion class : Ex ia IIC T4 Ga Others: CE Marking (RKI's feature list: intrinsically safe ATEX / IECEx / cCSAus) |
| Warranty | Three years material (including R sensors) and workmanship. 2 years for IR sensors and ESS (except Cl2), One year for TE, Cl2 and PID sensors (Two months for 11.7 eV lamp) |
| Country of origin | Japan |
| Unit of sale | Each |
Source: RKI Instruments product page https://www.rkiinstruments.com/product/gx-6100-multigas-detector/ (common specifications, standard features and accessories, approvals, warranty); RKI Instruments GX-6100 datasheet (PDF). The configuration (gases, sensors, battery pack, charger) is read from our listing and the -A suffix of the RKI part number. Figures are as RKI publishes them.
Detectable gases on the 72-61MBDX-A
| Gas | Sensor | Detection range | Reading increment | Alarm set points | Accuracy |
|---|---|---|---|---|---|
| O2 | Electrochemical R sensor | 0 - 40.0% vol | 0.1% vol | A1 19.5% vol; A2 18% vol; A3 23.5% vol | ± 0.5% O2 |
| H2S | Electrochemical R sensor | 0 - 200.0 ppm | 0.1 ppm | A1 5.0 ppm; A2 30.0 ppm; A3 100.0 ppm; TWA 1.0 ppm; STEL 5.0 ppm | ± 5% of reading or ± 2 ppm |
| CO | Electrochemical R sensor | 0 - 2,000 ppm | 1 ppm | A1 25 ppm; A2 50 ppm; A3 1,200 ppm; TWA 25 ppm; STEL 200 ppm | ± 5% of reading or ± 5 ppm |
| VOC | PID, 10.6 eV lamp (600 VOCs), high range | 0 - 4,000 ppm | 0.1 ppm (< 600 ppm); 1 ppm (> 600 ppm) | A1 400 ppm; A2 1,000 ppm; A3 1,000 ppm | ± 10% of reading, ± 1 digit |
| HC IR | Isobutane NDIR smart sensor | 0 - 100% LEL / 0 - 30% vol | 1% LEL / 0.5% vol (as the methane row prints) | A1 10% LEL; A2 50% LEL; A3 50% LEL (as the methane row prints) | Not stated on the RKI page |
Source: RKI Instruments product page https://www.rkiinstruments.com/product/gx-6100-multigas-detector/ (gases and detectable ranges table). Alarm set points are RKI factory settings, user adjustable; they are not exposure limits.
Exposure limits for the gases the 72-61MBDX-A detects
| Gas | CAS | OSHA PEL | NIOSH REL | NIOSH IDLH |
|---|---|---|---|---|
| Hydrogen sulfide (H2S) | 7783-06-4 | C 20 ppm 50 ppm [10-minute maximum peak] | C 10 ppm (15 mg/m³) [10-minute] | 100 ppm |
| Carbon monoxide (CO) | 630-08-0 | TWA 50 ppm (55 mg/m³) | TWA 35 ppm (40 mg/m³) C 200 ppm (229 mg/m³) | 1200 ppm |
29 CFR 1910.146(b) defines a hazardous atmosphere to include a flammable gas, vapor or mist in excess of 10 percent of its lower flammable limit (LFL), an atmospheric oxygen concentration below 19.5 percent or above 23.5 percent, and any atmospheric concentration of a substance that could result in employee exposure in excess of its dose or permissible exposure limit.
A PID reads total VOCs against the calibration gas (isobutylene unless set otherwise); the limit for a specific solvent is looked up by compound, and RKI's PID response chart gives the correction factor by lamp.
Source: NIOSH Pocket Guide to Chemical Hazards (OSHA PEL, NIOSH REL and IDLH, CAS number, as published); 29 CFR 1910.146(b) for the oxygen and flammable-gas definitions. Limits are the published figures, not a recommendation for any task.
Features
- TC sensor for %volume measurement of combustibles
- New ppm MOS CH4 and ppm MOS i-C4H10 sensors
- 4 PID options: 10.6 (2 ranges) eV, 10.0 eV, and 11.7 eV lamps
- Supports dual PID sensors
- PID library of over 600 VOCs
- Rapid sharing of emergency alerts via Bluetooth
- Benzene specific version
- PPM Leak Check mode
- LEL sensor protection mode
- Man-down alarm
- Panic alarm
- Auto display rotation
- Peak-bar display
- LED Light source
- Internal sample pump
- Light weight, small, rugged IP-67 design
- Interchangeable battery packs (Li-ion / alkaline)
- Operates up to 28 hours on Li-ion battery pack, 8 hours operation with alkaline pack
- Field replaceable sensors, batteries, filters and pump
- Intrinsically safe ATEX / IECEx / cCSAus
Source: RKI Instruments GX-6100 feature list, RKI Instruments product page https://www.rkiinstruments.com/product/gx-6100-multigas-detector/.
RKI Instruments GX-6100 documents
- GX-6100 Product Datasheet (PDF) - datasheet
- GX-6100 Brochure (PDF) - brochure
- GX-6100 Operator's Manual (PDF) - operator's manual
- GX-6100 Quick User Guide (PDF) - quick reference card
- GX-6100 Data Logger Operator's Manual (PDF) - datalogging manual
- GX-6100 User Config Operator's Manual (PDF) - setup program manual
- PID Response Chart (PDF) - PID response chart (correction factors by lamp)
- SDM-6100 Datasheet (PDF) - SDM-6100 calibration station datasheet
- SDM-6100 Operator's Manual (PDF) - SDM-6100 calibration station operator's manual
Source: RKI Instruments GX-6100 and SDM-6100 downloads, RKI Instruments product page https://www.rkiinstruments.com/product/gx-6100-multigas-detector/; SDM-6100 page https://www.rkiinstruments.com/product/sdm-6100-calibration-station/.
RKI Instruments GX-6100 O2/H2S/CO/VOC/HC IR configurations
| Part number | Gases | Battery | Charger | Price |
|---|---|---|---|---|
| 72-61MBDX-A | O2/H2S/CO/VOC/HC IR | Alkaline | None | $3030.25 |
| 72-61MBDX-C | O2/H2S/CO/VOC/HC IR | Li-Ion | 100-240 VAC | $3251.25 |
Every GX-6100 configuration we stock (333) is on the GX-6100 page. RKI lists the sensor options LEL, O2, CO, H2S, PID (10.0, 10.6 and 11.7 eV), NDIR CO2, methane and hydrocarbon, TC % volume methane, ppm MOS methane and isobutane, and the toxics NH3, Cl2, HCN, NO2, PH3 and SO2.
Source: Our listing data per part number; prices from the store.
RKI Instruments 72-61MBDX-A questions
What does the 72-61MBDX-A 5 gas detector detect? Oxygen (O2), hydrogen sulfide (H2S), carbon monoxide (CO), VOCs (PID, 10.6 eV lamp, 0-4,000 ppm) and hydrocarbons (infrared, isobutane, % LEL and % vol). It is the GX-6100 with 5 of its six channels fitted; RKI lists the range, increment and preset alarms for each in the table above.
At what levels does the 72-61MBDX-A alarm go off? RKI's factory alarm settings on the 72-61MBDX-A: O2 A1 19.5% vol; A2 18% vol; A3 23.5% vol; H2S A1 5.0 ppm; A2 30.0 ppm; A3 100.0 ppm; TWA 1.0 ppm; STEL 5.0 ppm; CO A1 25 ppm; A2 50 ppm; A3 1,200 ppm; TWA 25 ppm; STEL 200 ppm; VOC A1 400 ppm; A2 1,000 ppm; A3 1,000 ppm; HC IR A1 10% LEL; A2 50% LEL; A3 50% LEL (as the methane row prints). They are user adjustable, and they are RKI's presets, not exposure limits; the detectable gases table above has the full row for each gas.
Is the 72-61MBDX-A intrinsically safe? Yes. RKI lists the GX-6100 as intrinsically safe (ATEX / IECEx / cCSAus) with the explosion class Ex ia IIC T4 Ga, TIIS approval and CE marking; the full line is in the specification table above.
Is the 72-61MBDX-A the replacement for the RKI GX-6000? RKI's GX-6000 page says: "The GX-6000 has been discontinued. Please see GX-6100 as an alternative." The GX-6100 adds a TC % volume sensor, ppm MOS CH4 and isobutane sensors, dual PID support and Bluetooth alerts, per RKI's feature list.
How far can the 72-61MBDX-A draw a sample? RKI lists a sample draw pump, flow rate 0.45 LPM, 100 foot sample range; the standard kit includes a 3 ft Teflon-lined hose and probe, and RKI lists hoses up to 100 ft as optional.
What does the PID sensor on the 72-61MBDX-A detect? VOC: PID, 10.6 eV lamp (600 VOCs), high range, 0 - 4,000 ppm in 0.1 ppm (< 600 ppm); 1 ppm (> 600 ppm) steps, as RKI lists it for the 72-61MBDX-A. A PID reads the total of the volatile organic compounds its lamp can ionize as one number against the calibration gas; RKI's PID response chart (linked in the documents list above) gives the correction factor for each compound.
Guides: what a 4-gas monitor measures · oxygen deficiency and enrichment · H2S exposure limits · CO exposure limit · VOC detection with a PID · LEL and UEL by gas · confined space gas testing order · every gas monitor by gas, sampling and battery · what to do when an H2S monitor alarms · ATEX vs explosion-proof vs intrinsically safe.
Manufacturer item number: 72-61MBDX-A. Datasheet: RKI Instruments GX-6100 datasheet (PDF).
