Refrigeration Gas Detection System by TQ Environmental plc
Model number: TQ4200

Manufacturer

TQ Environmental plc
Unit 2
Silkwood Court
Wakefield
West Yorkshire

Technology: Refrigeration Equipment
Subtechnology: Automated Permanent Refrigerant Leak Detection Systems
Date added to ETL: 1 December 2007
Detects HCFC: Yes
Detects HFC: Yes
Detects HC: Yes
Detects HFO: Yes
Detects CO₂: Yes
Detects other refrigerants: Yes
Detects NH3: No
Measurement sensitivity(All gases but CO2) (ppm): 10
Alarm signal threshold (CO2) (parts per million, ppm): 1000
Alarm signal threshold HCFCs (ppm): 100
Alarm signal threshold HFCs (ppm): 100
Alarm signal threshold HCs: 5000
Alarm signal threshold HFOs: 100
Measurement sensitivity (CO2) (PPM): 200
Measurement accuracy (CO2) (ppm): 200
Measurement accuracy (all gases but CO2) (ppm): 2
Standalone system?: Yes
Aspirated system with control panel?: Yes
Can standalone system operate in conditions of between -25 to 50 degC and RH of up to 90%?: No
Can aspirated system operate in conditions of between -25 to 50 degC and RH of up to 90%?: No
Can aspirated system control panel operate in conditions of between 0 to 50 degC and RH of up to 90%?: Yes
Does the product have an appropriate Conformity Assessment mark?: Yes

Code	Title
Ss_75_50_28_30	Fixed gas detection and alarm systems
Ss_75_50_28_32	Flow sample gas detection and alarm systems
Ss_75_50_28_71	Refrigerant leak detection and alarm systems