SPARK TEST APPARATUS
model: SPARK 2

Ex-i TEST

FOR INTRINISICALLY SAFE CIRCUITS

STANDARD REFERENCES:

• IEC 60079-11: 2011 Explosive atmospheres - Part 11.

• EN 60079-11 Equipment protection by intrinsic safety "i" ,

• ISA 60079-11 Spark Test Apparatus

SPECIFICATION:

• Spark chamber volume            0,5 L

• Chamber working pressure     P_max > 20 bar

• Quick open/close system         bayonet lock

• Automatic ignition detection    built-in pressure sensor

• Cut-off safety switch               top head closed position

• Warning sound                        test completed

• Automatic stop:
    - ignition detected
    - procedure completed
    - top head opened

• Internal flame arresters          on gas inlet and outlet

• Broken electrode detection:    during calibration  procedure

• Rotating cadmium disk holder            
    - double sealed
    - gold plated

• Electrode material                    tungsten wire

• Electric step-motor                   80 rpm

• Gear wheels                             50:12 ratio

• Rotating connectors                             
    - hermetic
    - resistance below 1mΩ
    - current allowed ≥ 100A
    - long life design

• Electric contacts & terminals:   gold plated

• Fusing instrument                    tungsten wire cutting

• Gas mixing device:
    - mixtures I, IIA, IIB, IIC
    - safety factor x1 & x1,5
    - safety circuit

• New disc conditioning               20 000 revolutions

• Weight:                                     14kg

SPARK TEST APPARATUSmodel: SPARK 2