The RIS has been discontinued. Please contact AFC International for alternative products to detect isocyanates. The RIS is housed in an environmentally sealed (NEMA 4X), tamper resistant enclosure with an eternal membrane switch control panel. The unit operates on DC current from an external power supply and has internal battery backup which enables the RIS to operate up to 7 hours in case of a power outage.
Features
- Tough, NEMA 4X enclosure for safe, dependable operation
- Large LCD readout provides gas levels and diagnostic cues
- Modular design for easy maintenance
- Continuous data storage capability
- Memory and print options for greater versatility
A large, easy to read LCD on the RIS indicates gas concentration and features a "strobing" visual alarm that is triggered when a preset alarm level is exceeded. The LCD also shows self-diagnostic data such as unit readiness, alarm set level, battery current and charge voltage, percent of sampling tape remaining and fault situations. The RIS's modular internal design makes maintenance quick and easy. Many system faults can be readily identified using the unit's test mode.
An internal terminal strip provides a connection for the eternal power supply, an audible alarm relay, and analog output. An internal card cage allows the unit to accept a number of optional upgrade plug in printed circuit cards for enhanced performance and capabilities.
Typically, up to 8 hours of sampling data can be stored in the RIS's internal memory. This allows personnel to review data over the course of an entire workday to pinpoint when and where toxic gas concentrations occur. The unit calculates 8 hour and 15 minute PNA values and can be set to alarm at TWA and STEL values.
A Memory and Printer option gives the RIS the capability to send its output to a printer on demand or on a regular, timed basis. This option enables the unit to store data for the last seven day sampling period. The printout will automatically include the 8 hour and 15 minute TWAs based on the last data available.
By using the 4-20 mA output, it is possible to network RIS units into a multi point monitoring system, supervised by a central controller. This capability enables personnel to remotely monitor and control the RIS, providing instant access to gas monitoring information in all parts of a facility.
Instrument Specifications
| Accuracy |
± 15% of reading
± 1 ppb |
ppb Ranges |
| ppm Ranges |
± 15% of reading ± 0.01 ppm |
Power Input
Requirements |
Power Transformer |
12 VDC |
| Input Current |
Depends upon model & conditions |
| Low Flow Models |
Normal Run Current (charged battery)= 150 to 200 mA
Run Current (discharged battery)= 500 to 700 mA |
| High Flow Models |
Normal Run Current (charged battery)=250 to 300 mA
Run Current (discharged battery)=600 to 800 mA |
Solid State
Relay Output |
Standard System |
1 Combined Gas/Fault Alarm |
| Optional Outputs |
2 Gas Alarms plus 1 Fault Alarm |
| Analog Output |
Standard |
4-20 mA is available on the instrument, 0-1 VDC can be hardware selected, in both cases the minimum = zero concentration and the maximum value = system range minimum |
| Display |
Parameters |
System readiness status, measured concentration, tape remaining and icons for gas & fault alarms |
| Test Mode |
Alarm set points, system current (mA), alarm type, regulated voltage (V), active gas type, track 1&2 light levels, date & time with optional serial printer interface pcb |
| Front Panel |
Membrane switch panel: Four switches for the following functions: PRINT, 8 HR, TWA/DIGIT SET, 15 MIN TWA/DECADE & HOLD/RELEASE |
| Battery |
Sealed Lead Acid, charge maintained with external power connected |
| Temperature |
-10 to 40°C |
| Humidity |
5-95% RH |
| Sampling Input |
Teflon input tubes |
| Printer Options |
TTL serial interface and 7 day memory |
| Cable Glands |
3X for input/output cables, prewired connector for optional printer |
| Enclosure |
IP-55 with sealed glands |
| Dimensions |
7" D x 11.75" W x 7.875" H |
| Weight |
11.5 pounds |
Ordering Information
For pricing, please call AFC International at 1-800-952-3293, 219-987-6825 or fax 219-987-6826 or email sales@afcintl.com.