Description
The RKI RP-3R Sample Draw Pump is a compact, battery-operated pump designed specifically for use with the RKI GX-3R portable gas monitor. The RP-3R quickly attaches to the GX-3R and converts the monitor from diffusion operation to active sample-draw operation, making it ideal for remote sampling and confined-space applications.
This RP-3R configuration is designed for the RKI GX-3R only. It will NOT fit or work with the GX-3R Pro. The GX-3R Pro requires the separately configured RP-3R Pro sample draw pump. Please verify your gas monitor model before ordering.
The pump snaps onto the GX-3R in seconds without tools. A retaining tab and locking mechanism help secure the detector to the pump during use while allowing it to be quickly removed when sample-draw operation is no longer required.
Two selectable flow modes provide flexibility for different sampling applications. Standard higher-flow operation provides approximately 0.50 LPM, while the lower-flow ECO mode operates at approximately 0.35 LPM. The RP-3R provides a minimum operating time of approximately 10 hours in higher-flow mode or 16 hours in lower-flow mode at 25°C.
For remote sampling, optional hose and probe assemblies can be connected using the quick-disconnect inlet fitting. RKI supports sample hose lengths up to 100 feet. The RP-3R also provides visual and audible indications for low-flow conditions and a visual indication for low battery.
Compatible Monitor: RKI GX-3R ONLY
Not Compatible With: RKI GX-3R Pro
Sampling Method: Motorized Sample Draw
Higher Flow Rate: 0.50 LPM
Lower Flow Rate: 0.35 LPM
Power: 1 AA Alkaline Battery
Instrument Weight: Approx. 4.2 oz (120 g)
Maximum Optional Hose Length: 100 ft
Warranty: 1 Year
Not sure whether you need the RP-3R or RP-3R Pro?
Call CPS Calibrations at 865-900-8844 or email info@cpscalibrations.com before ordering.
- Designed for the GX-3R: This RP-3R configuration is specifically designed to attach to the RKI GX-3R portable gas monitor.
- Not for GX-3R Pro: The GX-3R Pro requires the separate RP-3R Pro configuration.
- Converts Diffusion to Sample Draw: Allows the GX-3R to actively draw samples from remote locations instead of relying only on diffusion sampling.
- Tool-Free Attachment: Quickly and securely attaches to and removes from the GX-3R without tools.
- Two Flow Modes: Choose between 0.50 LPM higher-flow operation and 0.35 LPM lower-flow ECO operation.
- Extended Battery Operation: Provides a minimum of approximately 10 hours in higher-flow mode or 16 hours in lower-flow mode at 25°C.
- Single AA Battery: Powered by one readily available AA alkaline battery.
- Low-Flow Alarm: Provides visual and audible notification when a low-flow condition occurs.
- Low-Battery Indication: POWER LED flashes to alert the user when battery power is low.
- Quick-Disconnect Fitting: Makes connecting optional sampling hose and probe accessories fast and convenient.
- Remote Sampling: Supports optional sampling hose lengths from 10 ft up to 100 ft.
- Included Sample Nipple: Includes a 4-inch tapered rubber sample nipple for sampling through openings and access points.
- Hydrophobic Filtration: Integrated hydrophobic filters help protect the pump during sampling.
- Compact & Lightweight: The pump weighs approximately 4.2 oz (120 g) including the alkaline battery.
- Confined-Space Applications: When paired with the GX-3R, the RP-3R provides active sample-draw capability for pre-entry and remote atmospheric sampling.
- Intrinsically Safe: Safety approvals are provided for applicable hazardous-location use when used with the GX-3R in accordance with RKI instructions.
- 1-Year Warranty: RKI specifies a one-year warranty for applicable gas alarm equipment, subject to the manufacturer's warranty terms.
| Model | RP-3R |
| Product Type | Clip-On Sample Draw Pump |
| Compatible Monitor | RKI GX-3R Only |
| GX-3R Pro Compatibility | NO – GX-3R Pro Requires RP-3R Pro |
| Sampling Method | Motorized Sample Draw |
| Higher-Flow Mode | 0.50 LPM |
| Higher-Flow Sample Draw Time | Approximately 46 Seconds |
| Lower-Flow / ECO Mode | 0.35 LPM |
| Lower-Flow Sample Draw Time | Approximately 65 Seconds |
| Maximum Optional Hose Length | 100 ft |
| Power Supply | 1 AA Alkaline Battery |
| Higher-Flow Operating Time | 10 Hours Minimum at 25°C |
| Lower-Flow Operating Time | 16 Hours Minimum at 25°C |
| Alarm Indications | Low Flow & Low Battery |
| Operating Temperature | -4°F to 122°F (-20°C to 50°C) |
| Operating Humidity | 0–95% RH, Non-Condensing |
| Dimensions | 1.14 × 3.23 × 3.78 in. (29 × 82 × 96 mm), Rubber Sample Nipple Not Included |
| Weight | Approx. 4.2 oz (120 g), Including Alkaline Battery |
| Standard Accessories | 4-Inch Tapered Rubber Sample Nipple, AA Alkaline Battery & Hydrophobic Filters |
| Optional Accessories | 10–100 ft Sample Hose & 10-Inch Sample Probe |
| Warranty | 1 Year |
Product Documentation
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