UNIT NJ 22 FOR USE IN HAZARDOUS AREA

CHARACTERIZATION

- two sensor-signals evaluation, min. and max. of level, according to norm DIN 19234 (NAMUR)
- possibility to place in any area till ZONE 0
- protection category EExiaIIC, use in hazardous area
- indicator LED for power,relay status,interruption of loop,short-circuit of loop, sensor status
- output relay (two-way contact)
- possibility to change the direction of level control (modif. D - filling in; modif. O - drawing off)
- 35mm rail mounting ( EN 50 022, DIN 46277/3)
- tested and approved according to EN 50 020 European norm in State Institute for Certification.
(FTZU - SZ210) certificate No. J 03575

 

TECHNICAL PARAMETERS

Supply voltage 

230 V / 50 Hz
Range of supply voltage  200...250 VAC
Maximum power input 2,5 VA
Working area non hazardous
Working temperature range -20°C to 60°C
Maximum rel. humidity  95% by 20°C
Case protection IP 40, terminals IP 20
Output voltage using in hazardous area 8,0 V
Output current using in hazardous area < 6 mA
Maximum switching current 2 A (ZONE 0)
Maximum switching voltage 250 VAC
Maximum switching power 100 VA (ZONE 0)
Maximum switching frequency  15 Hz
Dimensions 45mm x 85mm x 70mm
Material of case NORYL SE1 (General Electric)
Placing switchboard with IP 20 min.

 

MAXIMUM VALUES IN HAZARDOUS AREA


Umax.
Imax.
Max. capacitance Ca for IIC (line and sensor)
Max. inductance La for IIC (line and sensor)


10,5 V
32 mA
800 nF
5 mH


note .: Relay switch on by level reaching sensor MAX
or by level reaching sensor MIN.
If unit does not supply sensor in ZONE 0 it is possible to
increase max.switching current to 6A and power to 1500 VA

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