Diffusion Gas Sensor – Fixed Systems
Features
- Available gases include
– LEL, H2S, CO, PPM H2, and CO2
– Toxic gases include NH3, AsH3, Cl2, ClO2, HCN, & SO2 - Infrared sensor for combustibles and CO2
- Hydrogen-Specific now available
- Patented water repellent sensor coating
- 4-20 mA output
- Explosion proof construction
- Optional stainless steel junction box
Description
The RKI S2 series gas sensor/transmitters are highly reliable and very cost effective for the detection of common gas
hazards. The S2 series are available for LEL, H2 Specific (LEL, and ppm), Oxygen, H2S, CO, and for a variety of toxic
gases. The transmitters for LEL, H2 Specific, Oxygen, H2S, CO2, and Carbon Monoxide are explosion-proof with flame
arrestors, and approved for use in hazardous areas (Class l, Div 1 Groups B, C, D). An optional non-explosion proof
version is available for oxygen, H2S, CO, and CO2 in Class 1 Div 2. LEL sensors are available using catalytic bead and
infrared technologies.
The toxic sensors are electrochemical type plug-in sensors, which provide high specificity, fast response, and long life.
The plug-in design allows quick replacement in the field with no tools required. Toxic sensors are designed for use in
Class I, Div. 2 hazardous locations. Sensors available for NH3, AsH3, Cl2, ClO2, HCN, PH3, and SO2.
The S2 transmitters can be used either indoors or outdoors. The flame arrestors for the explosion-proof versions
utilize a patented coating which make them water repellent. Splash guards are also available for use in very wet
environments. An optional stainless steel junction box is available for corrosive environments.
All of the S2 transmitters are designed to interface with RKI controllers, or with PLC/DCS systems.
Specifications
Explosion Proof – Class I, Div. 1 , Groups B, C, D
| LEL General Purpose |
LEL H2 Specific |
H2 PPM Hydrogen |
O2 Oxygen |
H2S Hydrogen Sulfide |
CO Carbon Monoxide |
CH4 Methane IR |
HC Hydrocarbons IR |
CO2 Carbon Dioxide IR |
|
| Part # |
65-2405RK |
65-2451RK |
65-2443-500 65-2443-1000 65-2443-2000 |
65-2322RK |
65-2331RK |
65-2336RK |
65-2394RK-CH4 |
65-2394RK-HC |
65-2396RK-02 65-2396RK-03 65-2396RK-05 65-2396RK-10 |
|
65-2405RK-05 |
65-2451RK-05 |
||||||||
| Sensor |
Catalytic |
Metal oxide |
Galvanic cell |
Electrochemical |
Infrared |
||||
| Measuring Range |
0-100% LEL |
0-100% LEL (H2 Specific) |
0-500 ppm 0-1000 ppm 0-2000 ppm |
0-25% Vol. |
0-100 ppm |
0-300 ppm |
0-100% LEL |
0 – 5000 ppm 0 – 5% Vol. 0 – 50% Vol. 0 – 100% Vol. |
|
| Lower Detectable Limit (LDL) |
2% of full scale |
0.1% Vol. |
2% of full scale |
||||||
| Accuracy (whichever is greater) |
± 5% of |
± 10% of full scale |
±0.5% O2 |
± 5% of |
± 5% of |
± 5% of |
|||
| Response Time (T-90) |
30 Seconds |
20 Seconds |
45 Seconds |
90 Seconds |
60 Seconds |
90 Seconds |
30 Seconds |
||
| Max Current Draw (24VDC) |
70 mA (power wires) 25 mA (signal wires) 3 wires |
25 mA max, 2 wires |
60 mA (power wires) 25 mA (signal wires) 3 wires |
||||||
| Life Expectancy |
2 to 3 years with normal exposure to flammable gas |
3-5 years with normal service |
5 years plus with normal service |
2-3 years with normal service |
5 years plus with normal service |
||||
| Operating Environment | |||||||||
| Location |
Indoor or outdoor. Explosion proof for Class I, Div. 1, Groups B, C, and D. |
||||||||
| Temperature |
-40°F to 167°F -40°C to 75°C |
-4°F to 104°F -20°C to 40°C |
-4°F to 113°F -20°C to 45°C |
-40°F to 104°F -40°C to 40°C |
23°F to 104°F -5°C to 40°C |
-40°F to 122°F -40°C to 50°C |
|||
| Humidity | 0 – 99% RH, non condensing | ||||||||
| Housing | |||||||||
| Housing J Box | Cast aluminum explosion proof, optional stainless steel J-box available | ||||||||
| Sensor | Stainless steel explosion proof | ||||||||
| Controls | |||||||||
| Zero | Sets transmitter output to 4 mA with zero output from sensor | ||||||||
| Span | Sets transmitter output to proper level when span gas is applied | ||||||||
| Output | 4 – 20 mA signal | ||||||||
| Operating Voltage |
11 VDC to 30 VDC |
19 VDC to 30 VDC |
19-30VDC (250 OHMS impedance max) |
11 VDC to 30 VDC |
|||||
| Approvals |
65-2405RK UL |
65-2451RK UL |
65-2443-500 UL |
CSA NRTL |
C UL US |
||||
|
65-2405RK-05 |
65-2451RK-05 |
65-2443-500-05 CSA |
|||||||
| Controllers | Compatible with the following controllers: Beacon 110, Beacon 200, Beacon 410A, and 800, also PLC and DCS systems | ||||||||
| Warranty | One year materials and workmanship | ||||||||
Toxic Gas Transmitters – Class I, Div. 2
|
O2 |
H2S |
CO |
Toxics |
CO2 |
|
| Part # |
65-2320RK |
65-2330RK |
65-2335RK |
See chart |
65-2397RK-02 65-2397RK-03 65-2397RK-05 65-2397RK-10
|
| Sensor |
Galvanic cell |
Electrochemical |
Infrared |
||
| Measuring Range |
0-25% Vol. |
0-100 ppm |
0-300 ppm |
See chart |
0 – 5000 ppm 0 – 5% Vol. 0 – 50% Vol. 0 – 100% Vol. |
| Lower Detectable Limit (LDL) |
0.1% Vol. |
2% of full scale |
|||
|
Accuracy
(whichever is greater) |
± 0.5% O2 |
± 5% of |
± 5% of |
± 10% of |
± 5% of |
| Response Time (T-90) |
20 Seconds |
45 Seconds |
30 Seconds |
60 Seconds |
30 Seconds |
| Max Current Draw (24VDC) |
25 mA max, 2 wires |
60 mA (power wires) 25 mA (signal wires) 3 wires |
|||
| Life Expectancy |
2 years normal |
2 to 3 years with normal service |
5 years plus with |
||
| Operating Environment | |||||
| Location |
Indoor Class I, Div. 2 |
||||
| Temperature |
-4°F to 122°F -20°C to 50°C |
14°F to 104°F -10°C to 40°C |
-40°F to 122°F -40°C to 50°C |
||
| Humidity |
0 – 99% RH non condensing |
5-95% RH |
0 – 99% RH |
||
| Housing | |||||
| Housing J-Box | Cast aluminum, explosion-proof | ||||
| Sensor | Plastic or aluminum | ||||
| Controls | |||||
| Zero | Sets transmitter output to 4 mA with zero output from sensor | ||||
| Span | Sets transmitter output to 20 mA with full scale output from sensor | ||||
| Operating Voltage | 19 VDC to 30 VDC | ||||
| Output | 4-20 mA signal | ||||
| Controllers | Compatible with the following controllers: Beacon 110, Beacon 200, Beacon 410A, and 800, also PLC and DCS systems | ||||
| Warranty | One year materials and workmanship | ||||
S2 Non Explosion Proof Toxic Assemblies |
||||
| Part Number With J-Box | Gas | Range | Resolution | Sensor Type |
| 65-2340RK-NH3 | Ammonia (NH3)* | 0 – 75.0 ppm | 0.1 ppm | ESM -01 |
| 65-2341-NH3-75 | Ammonia (NH3) | 0 – 75.0 ppm | 0.1 ppm | CT-7 |
| 65-2341-NH3-1 | Ammonia (NH3) | 0 – 100 ppm | 1 ppm | CT-7 |
| 65-2341-NH3-2 | Ammonia (NH3) | 0 – 200 ppm | 1 ppm | CT-7 |
| 65-2341-NH3-5 | Ammonia (NH3) | 0 – 500 ppm | 1 ppm | CT-7 |
| 65-2340RK-AsH3 | Arsine (AsH3) | 0 – 1.50 ppm | 0.01 ppm | ESM -01 |
| 65-2341-CL2-3 | Chlorine (Cl2) | 0 – 3.00 ppm | 0.01 ppm | CT-7 |
| 65-2341-CL2-05 | Chlorine (Cl2) | 0 – 5.00 ppm | 0.02 ppm | CT-7 |
| 65-2341-CL2-10 | Chlorine (Cl2) | 0 – 10.0 ppm | 0.1 ppm | CT-7 |
| 65-2341-CLO2-1 | Chlorine Dioxide (ClO2) | 0 – 1.00 ppm | 0.01 ppm | CT-7 |
| 65-2340RK-HCN | Hydrogen Cyanide (HCN) | 0 – 15.0 ppm | 0.1 ppm | ESM -01 |
| 65-2340RK-PH3 | Phosphine (PH3) | 0 – 1.00 ppm | 0.01 ppm | ESM -01 |
| 65-2340RK-SO2 | Sulfur Dioxide (SO2) | 0 – 6.00 ppm | 0.01 ppm | ESM -01 |
S2 Wiring Matrix |
||||
| S2 Transmitter | Number of Wires to Controller | Maximum Distance to Controller | ||
| 18 AWG wire | 16 AWG wire | 14 AWG wire | ||
| LEL / IR / CO2 | 3 | 2500 ft. | 5,000 ft. | 8,000 ft. |
| Oxygen | 2 | 2500 ft. | 5,000 ft. | 8,000 ft. |
| H2S | 2 | 2500 ft. | 5,000 ft. | 8,000 ft. |
| CO | 2 | 2500 ft. | 5,000 ft. | 8,000 ft. |
| Toxics | 2 | 2500 ft. | 5,000 ft. | 8,000 ft. |
Specifications subject to change without notice.
Made in the USA
Availability: Manufacturer Sourced. Usually available/ships in 3-7 Days.
| Style | Methane (CH4), LEL – H2 Specific, Hydrogen Sulfide (H2S), Hydrocarbons (HC), H2 (0-1000 ppm), H2 (0-2000 ppm), LEL, Oxygen (O2), Carbon Monoxide (CO), CO2 (0-100% Vol.), CO2 (0-5.0% Vol.), CO2 (0-50% Vol.), CO2 (0-5000 ppm) |
|---|
Professional packing and fast shipping
Because of our long-standing partnership in a long-standing partnership with UPS, FedEx, DHL and many other top global carriers we can offer a variety of shipping options. Our warehouse personnel will pack each item according to our strict specifications. Before shipping your items will be thoroughly examined and secured. We deliver to thousands of clients each day across multiple countries. This is a testament to our dedication to being the largest online retailer worldwide. We have distribution centers and warehouses in Europe and in the USA.
Note: Orders containing more than one item will be assigned a different processing period for each item.
Before shipping before shipping, we'll conduct a thorough inspection of the items you've ordered. Currently, most orders are shipped within 48 hours. Delivery is expected to take between three and seven days.
Returns
Due to multiple parties which include the factory as well as the warehouse, we are unable to completely manage our stock. The actual inventory can change at any moment. Be aware that it is possible for your order to run out of stock even after you have made the order.
Our policy lasts thirty days. However, if the 30 days have elapsed from the date you purchased the item, we cannot give you a refund or exchange.
The item you purchase must be in its original packaging and not be used. The item must be in its original packaging.
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