Cryochambers

Cryotherapy using liquid nitrogen - measuring the decrease in oxygen concentration in the ambient air.

Legal basis (in Polish law)

§ 97.1. Pomieszczenia przeznaczone do składowania lub stosowania materiałów niebezpiecznych pod względem pożarowym lub wybuchowym oraz pomieszczenia, w których istnieje niebezpieczeństwo wydzielania się substancji sklasyfikowanych jako niebezpieczne, powinny być wyposażone w:
1) urządzenia zapewniające sygnalizację o zagrożeniach;

Detected substance/property

Substance/property:
oxygen ↓ (O2) §
Hazard:
hypoxia
Density relative to air:
1.11

Location of detectors

  1. outside the cryochamber;
  2. In the occupied zone; 1.6-1.8 m above floor level;
  3. In an area not directly exposed to outside air, water vapour, liquids;
  4. Away from supply air vents, window and door openings.

Standard configurations of gas detection systems

Cryochambers – Kriokomory - MD-1.Z
Example 1
PDF DWG
System topology
Star
Supply voltage of the control unit
230 V AC
Control unit
MD-1.Z
Maximum number of gas detectors
1
Emergency power backup
✓
Type of device: DG/F — Threshold detectors of toxic and combustible gases (also oxygen and refrigerants) with splash-proof construction
Type of device: MD-1, MD-2, MD-4 — Control and power supply units for 1 or up to 2/4 of DEX/F, DEX/A, DG/F or DG.EN threshold gas detectors
Type of device: SL-32 — Visual and acoustic warning devices for visual and acoustic signalling of alarm conditions
Type of device: GSM — Devices designed for remote monitoring of gas detection system status
Type of device: SW-20 — Double switches for 230 AC power supply
Cryochambers – Kriokomory - MD-2.A
Example 2
PDF DWG
System topology
Star
Supply voltage of the control unit
12 V DC
Control unit
MD-2.A
Maximum number of gas detectors
2
Emergency power backup
✓
Type of device: DG/F — Threshold detectors of toxic and combustible gases (also oxygen and refrigerants) with splash-proof construction
Type of device: MD-1, MD-2, MD-4 — Control and power supply units for 1 or up to 2/4 of DEX/F, DEX/A, DG/F or DG.EN threshold gas detectors
Type of device: SL-32 — Visual and acoustic warning devices for visual and acoustic signalling of alarm conditions
While supplies last
Type of device: PS — Power supplies with automatic battery (optional) power backup
Type of device: AKU — Batteries to provide power backup in PS or PU/TB type power supplies
Type of device: GSM — Devices designed for remote monitoring of gas detection system status
Type of device: SW-20 — Double switches for 230 AC power supply
Cryochambers – Kriokomory - WG.EGx
Example 3
PDF DWG
System topology
Serial (linear)
Supply voltage
230 V AC
Maximum number of gas detectors
∞
Emergency power backup
—
While supplies last
Type of device: WG.EGx — Threshold, autonomous detectors for carbon dioxide (CO2), carbon monoxide (CO), oxygen (O2), combustible (LPG/CNG) gases or refrigerants
Type of device: SL-32 — Visual and acoustic warning devices for visual and acoustic signalling of alarm conditions
Type of device: TP-4 — Internal LED warning boards to visually present the alarm status appearing at the control outputs
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