

THe model RI-257 sereies are designed to measure the presence of either Fluoro compound (FC) gas, Hydrofluroro compound (HFC or HCFC) gas representing VERTREL XP (HFC-134a) or IPA in the specified range through the built-in continuous operation pump.
As they are based on NDIR (Non Dispersive Infrared) method, the sample gas specified can be measured without interference from other gases.
Features
Applications
Specifications
Model |
RI-257 |
|---|---|
|
Detection Principle
|
Non dispersive infrared (NDIR) |
|
Sample Method
|
Sample-drawing by built in pump |
|
Alarm Point
|
Dual Alarm (WARNING/ALARM) Run: Latched mode (non-latched after alarm check ) Alarm lamp: Lamp display (Yellow/Red) Contact output: a contact (b contact option) Contact rating: AC125V 0.1mA-0.5A(resistance load) |
|
Repeatability
|
+/- 3% of F.S. |
|
Alarm delay time
|
Within 30 seconds by supplying 1.6 times the density gas of alarm preset point. |
|
External output
|
4-20mA (Current outputting type), Max 300 ohms (resistance load) |
|
Warming Up
|
60 min after turns on power (but measurement starts in 2 min after power on) |
|
Power Source & Power Consumption
|
Power: AC 100V, AC117V, or AC220V +/- 10% 50/60Hz, max 50VA |
|
Ambient Temp/Humidity
|
0~+40ºC (32-104ºF), 30-90%RH, Non Condensing
|
|
Mounting Method
|
Wall Mounting |
|
Dimensions
|
Appros. 180 (W) x 355 (H) x 97 (D) mm 7.1 (W) x 14 (H) x 3.8 (D) inches |
|
Weight
|
Approx. 3.8kg (8.4 lbs) |
|
Painting color
|
Munsell 2.5 Y 9/2 |
| Standard Accessories | Fuse Dust Filter Instruction Manual Test Certificate |
| Optional Accessories | Gas Sampling Bag MC Filter |
Gases and Ranges Detection Chart |
||
|---|---|---|
| Gas Detected | Range | Alarm set point |
| FC-14 (*) | 0-10000 ppm (50ppm/digit) | 3000 ppm |
| FC-116 (*) | 0-5000 ppm (25ppm/digit) | 2000 ppm |
| FC-C318 (*) | 0-5000 ppm (25ppm/digit) |
2000 ppm |
| Flon 23 | 0-10000 ppm (50ppm/digit) | 3000 ppm |
| Flon 32 | 0-10000 ppm (50ppm/digit) | 3000 ppm |
| Flon 41 | 0-5.000 vol% (0.025vol%/digit) | 2.000vol% |
| Flon 134a (Vertrel XP) |
0-5000 ppm (25ppm/digit) | 2000 ppm |
| Flon 225 | 0-5000 ppm (25ppm/digit) | 2000 ppm |
| IPA (iso-propyl alcohol) |
0-10000 ppm (50ppm/digit) | 3000 ppm |
* Specifications subject to change without notice.
* Wen ordering, please specify one of those specified gases above.
(*) FC means Perfluoro compound gas.