MCS-EMP Specifications

APPLIED FIELD STRENGTH WITH STANDARD 2 IN POLE CAPS (±1%)
 ExactGAP™ settingAir gapEM-4V maximum field EM-7V maximum field
Index 17.5 mm (0.30 in)26.1 kOe (2.61 T)31.2 kOe (3.12 T)
Index 212 mm (0.47 in)23.7 kOe (2.37 T)28.9 kOe (2.89 T)
Index 320 mm (0.79 in)19.6 kOe (1.96 T)25.3 kOe (2.53 T)
Index 425 mm (0.98 in)16.9 kOe (1.69 T)23.4 kOe (2.34 T)
Index 528 mm (1.10 in)15.4 kOe (1.54 T)22.3 kOe (2.23 T)
Index 650 mm (1.97 in)9.1 kOe (0.91 T)15.8 kOe (1.58 T)
 
APPLIED FIELD STRENGTH WITH 4 IN TO 2 IN POLE CAPS REMOVED (±1%)
 ExactGAP™ settingAir gapEM-4V maximum field EM-7V maximum field
Index 157.5 mm (2.26 in)7.9 kOe (0.79 T)13.6 kOe (1.36 T)
Index 262 mm (2.44 in)7.3 kOe (0.73 T)12.9 kOe (1.29 T)
Index 370 mm (2.76 in)6.5 kOe (0.65 T)11.8 kOe (1.18 T)
Index 475 mm (2.95 in)6.1 kOe (0.61 T)11.1 kOe (1.11 T)
Index 578 mm (3.07 in)5.9 kOe (0.59 T)10.8 kOe (1.08 T)
Index 6100 mm (3.94 in)4.6 kOe (0.46 T)8.7 kOe (0.87 T)
 
APPLIED FIELD STRENGTH WITH 7 IN TO 4 IN POLE CAPS REMOVED (±1%)
 ExactGAP™ settingAir gapEM-7V maximum field
Index 1146.5 mm (5.77 in)6.1 kOe (0.61 T)
Index 2151 mm (5.94 in)6.0 kOe (0.60 T)
Index 3159 mm (6.26 in)5.7 kOe (0.57 T)
Index 4164 mm (6.46 in)5.5 kOe (0.55 T)
Index 5Not recommended for this pole cap configuration
Index 6Not recommended for this pole cap configuration

EM-4V typical field uniformity

 Magnet configurationUniformity over 1 cm31% cylindrical volume
 Pole cap
mm (in)
Air gap
mm (in)
Diameter
mm (in)
Length
mm (in)
102 (4.0)51 (2.0)±0.15%18 (0.7)51 (2.0)
102 (4.0)25 (1.0)±0.05%64 (2.5)25 (1.0)
76 (3.0)25 (1.0)±0.06%46 (1.8)25 (1.0)
51 (2.0)25 (1.0)±0.35%18 (0.7)25 (1.0)
51 (2.0)13 (0.5)±0.16%36 (1.4)13 (0.5)

EM-7V typical field uniformity

 Magnet configurationUniformity over 1 cm31% cylindrical volume
 Pole cap
mm (in)
Air gap
mm (in)
Diameter
mm (in)
Length
mm (in)
51 (2.0)16 (0.6)±0.11%28 (1.1)16 (0.6)
51 (2.0)25 (1.0)±0.33%10 (0.4)25 (1.0)
102 (4.0)16 (0.6)±0.03%74 (2.9)16 (0.6)
102 (4.0)25 (1.0)±0.03%66 (2.6)25 (1.0)
102 (4.0)38 (1.5)±0.05%48 (1.9)38 (1.5)
102 (4.0)51 (2.0)±0.08%23 (0.9)51 (2.0)

NOTE: The third column gives uniformity over one cubic centimeter volume centered in the magnet gap. The last two columns give the cylindrical volume within which the magnetic field deviates by less than 1% from the central field. The cylindrical volume is coaxial with the magnet poles and centered in the gap.

FIELD MEASUREMENT

Field accuracy: 1% of reading or ±0.05% of full scale

Field resolution: TBD

Maximum field ramp rate: EM-4V: 10,000 Oe/s; EM-7V: 10,000 Oe/s

Closed loop field control stability: TBD

CERTIFICATIONS

CE: Yes

Application of Council directives: 2014/35/EU Low Voltage Directive; 2014/30/EU EMC Directive; 2011/65/EU RoHS Directive

Standard to which conformity is declared: EN61010-1: 2010 Overvoltage Category II, Pollution Degree 2; EN61326-1: 2013 Class A, Controlled EM Environment; EN55011: 2009 Class A, Controlled EM Environment EN50581: 2012

UTILITIES

Total system cooling water power dissipation (50 or 60 Hz)—contact us for available recirculating chillers

EM-4V: 4250 W

EM-7V: 13400 kW

Note: chiller power specifications listed are for 100% duty cycle. Many common applications will not require as much cooling power. Please consult Lake Shore for chiller recommendations for your specific applications.

MCS-EMP equipment

 EM-4VEM-7V
Electromagnet system controller F71 teslameter, PC and monitor, MeasureLINK™-MCS software, bipolar magnet power supply (see below); VT configuration adds Model 336 temperature controller; 483 mm (19 in) console
Bipolar magnet power supplyModel 643Model 648
Maximum output±35 V/±70 A (2,450 W)±75 V/±135 A (9.1 kW nominal)
AC line input200/208 VAC ±10%, 13 A/phase;
220/230 VAC ±10%, 12 A/phase;
380 VAC ±10%, 7 A/phase;
400/415 VAC ±10%, 6.5 A/phase at 50/60 Hz
200 VAC ±5%, 41 A/phase;
208 VAC ±5%, 40 A/phase;
220 VAC ±5%, 38 A/phase;
230 VAC ±5%, 37 A/phase;
380 VAC ±5%, 23 A/phase;
400 VAC ±5%, 21 A/phase;
415 VAC ±5%, 21 A/phase
Cooling water requirementsTap water or closed cooling system (optional chiller available) +15 °C to +30 °C
Flow rate5.7 L (1.5 gal)/min minimum7.6 L (2.0 gal)/min minimum
Pressure drop10 kPa (1.5 psi) at 5.7 L (1.5 gal)/min
minimum for power supply only
159 kPa (23 psi) at 7.6 L (2 gal)/min
minimum for power supply and mandatory flow switch
ElectromagnetModel EM-4VModel EM-7V
Pole diameter100 mm (4 in)180 mm (7 in)
Pole cap face diameter50 mm (2 in)
Field homogeniety±0.1% over 1 cm3 (0.4 in3)
Cooling water requirementsTap water or closed cooling system (optional chiller available)
Inlet temperature15 to 25 °C (59 to 77 °F)15 to 32 °C (59 to 89 °F)
Flow rate7.6 L (2 gal)/min11.4 L (3 gal)/min
Pressure drop200 kPa (30 psi)220 kPa (32 psi)
Water chiller capacity2.5 kW (8,530 BTU)/h5 kW (17,060 BTU)/h
Hall probeFP-2X-250-TS15

For additional magnet and power supply specifications, see the EM-4V and EM-7V Electromagnets and Electromagnet Power Supplies catalog

MCS-EMP temperature options

 EM-4V and EM-7V
Sample sizeUp to 10 mm × 10 mm × 3 mm standard
CCR temperature15 K to 400 K with standard CCR, 15 K to 350 K with optical CCR
Oven temperatureRoom temperature to 1,273 K; at 773 K and ±1% rdg: maximum = 1 MΩ; at 1,273 K and ±1% rdg: maximum = 1 kΩ