Electromagnetic flow meters

ENMAG Ex Explosion-proof version

Flow meters type ENMAG Ex for use in fire hazardous areas

The Ex version of a flow meter is manufactured and sold under the trade name of ENMAG Ex. It is a device placed in an intrinsically safe housing and it meets the requirements applicable for potentially explosive atmospheres..
It is certificated with a WE type examination certificate: KDB09 ATEX 031X issued by the Central Mining Institute, the degree of explosion protection: I M2 Ex ia I.

The ENMAG Ex flow meter is designed for liquid flow measurement in closed piping systems installed both in underground mining excavations and above-ground hazardous areas at risk of dust, vapours, mists and gases explosions.

It can also be used in Z2 and Z22 hazard zones.

Flow meter ENMAG Ex features:

meet requirements of current regulations according to directives MID, OIML R49-1
wide range of measurement from 0 to 10 [m/s]
wide range of electrodes and linings materials ensuring aggressive and abrasive medium measurement (for example mining sludge)
magnetic field control and precise "0" stabilization improve stability and measurement accuracy
empty pipe sensor
self diagnostics with failures registration
multifunctional outputs for control systems
digital communication RS-485, protocol MODBUS (RTU, ASCII)
long life time (no moving parts, no maintenance required)
a very high resistance for ambient conditions

Types of sensor linings:

Type of lining	Description, application
hard rubber HR	general application, water measurement, wastewater measurement
natural rubber NR	drinking water
Linatex®	material has a very high abrasion resistance measurement of medium including abrasive materials, sludge application in mining industry or treatment
epoxyd	material has a very high mechanical resistance for high-temperature application
PTFE, Tarflen	high-temperature application, aggresive chemicals, chemical industry, food industry

Type of electrodes:

Type of electrode	Application
acid resistant steel 0H22N24M4Tcu	general application
Hastelloy C-276	general application, a very high resistance for many chemical substances
Titanium	nitric acid and chromic acid, chlorine, chlorites
Tantalum	acids
Monel	salt, brine solutions and alkaline solutions

Relation between flow velocity V, flow q and nominal diameter DN

Nominal diameter Dn [mm]	Flow rate q for velocity V=0,1 [m/s]			Flow rate q for velocity V=0,5 [m/s]			Flow rate q for velocity V=10 [m/s]
	q [l/s]	q [l/min]	q [m³/h]	q [l/s]	q [l/min]	q [m³/h]	q [l/s]	q [l/min]	q [m³/h]
3	0,00067	0,04	0,0024	0,003	0,2	0,012	0,067	4	0,24
4	0,0013	0,08	0,0048	0,007	0,4	0,024	0,13	8	0,48
6	0,0033	0,20	0,012	0,017	1,0	0,06	0,33	20	1,2
8	0,0050	0,30	0,018	0,025	1,5	0,09	0,50	30	1,8
10	0,0075	0,45	0,027	0,037	2,3	0,13	0.75	45	2,7
15	0,0167	1,0	0,060	0,083	5,0	0,30	1,67	100	6
20	0,0250	1,5	0,090	0,13	7,5	0,45	2,50	150	9
25	0,0333	2	0,12	0,17	10	0,6	3,33	200	12
32	0,0666	4	0,24	0,33	20	1,2	6,66	400	24
40	0,1000	6	0,36	0,50	30	1,8	10,00	600	36
50	0,1667	10	0,6	0,83	50	3	16,67	1000	60
65	0,333	20	1,2	1,67	100	6	33,3	2000	120
80	0,500	30	1,8	2,50	150	9	50,0	3000	180
100	0,667	40	2,4	3,33	200	12	66,7	4000	240
125	1,167	70	4,2	5,83	350	21	116,7	7000	420
150	1,667	100	6,0	8,33	500	30	166,7	10000	600
200	3,00	180	10,8	15,00	900	54	300	18000	1080
250	5,00	300	18	25,00	1500	90	500	30000	1800
300	6,67	400	24	33,33	2000	120	667	40000	2400
350	9,17	550	33	45,83	2750	165	917	55000	3300
400	12,50	750	45	62,50	3750	225	1250	75000	4500
450	15,83	950	57	79,17	4750	285	1583	95000	5700
500	18,33	1100	66	91,67	5500	330	1833	110000	6600
600	26,67	1600	96	133,33	8000	480	2667	160000	9600
700	36,67	2200	132	183,33	11000	660	3667	220000	13200
800	50,00	3000	180	272,20	16333	980	5000	300000	18000
900	66,67	4000	240	333,33	20000	1200	6667	400000	24000
1000	75,00	4500	270	375	22500	1350	7500	450000	27000

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