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1. Introduction
CRLDS-1000 and CRLDS-CO2 Gas Detectors are used to monitor indoor air for any refrigerant leaks. The devices can be
used for refrigeration applications (cold rooms, freezer rooms, machinery rooms). The series detectors are available in the
following configurations:
• Built-in version
• Remote version
These detectors are calibrated in various refrigerants available on the market. The sensitive elements are constructed
using semiconductor (SC) technology and infrared (IR) technology. The CRLDS-1000 and CRLDS-CO2 Gas Detectors
can be used in stand-alone applications or connected in Copeland Controllers. Communication with controllers uses an
analog output, relays, or an RS485 Modbus serial connection. When a refrigerant leakage exceeding a programmable
concentration threshold is detected, an alarm or warning status is activated, depending on the level of concentration set,
and the CRLDS responds as follows:
• The combination of LEDs that are on changes
• A dedicated internal relay (SPDT) is activated
• The Analog output is controlled (in proportion to the detected concentration)
• The change in status is signaled via the RS485 Modbus® output
Furthermore, the Copeland CRLDS Application, available in both App Store and Play Store, can be used to access the
device. The CRLDS-1000 and CRLDS-CO2 detectors enable compliance with refrigeration safety standards (for example,
ASHRAE 15) through alarms to alert personnel in the event of a refrigerant leakage.
Semiconductor sensors detect the gas they have been calibrated for, but are also sensitive to other types of gases,
solvents, alcohol, or substances containing ammonia, such as cleaning products, present in the environment.
This, in certain areas and applications, can lead to false alarms when the substances described above are present.
Nonetheless, although they do not only detect the specific gas, but they also still give a reliable indication of the
concentration of the gas they have been calibrated for.
This device is neither certified nor approved for operation in oxygen-enriched atmospheres.
Non-compliance can lead to EXPLOSION.
This device has not been designed to guarantee intrinsic safety when used in areas classified as
hazardous (“Directive 2014/34/EU ATEX” and “NFPA 70, Hazardous Location”). For operator safety, DO NOT use it in
hazardous locations (classified as such).
If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment
may be impaired.
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