No longer available — please consider the 7400-S Series as an alternative.

 

Specifications

 
 74047407 7410
Magnet pole cap face diameter51 mm (2.0 in)151 mm (2.0 in)150 mm (2.0 in)1
APPLIED FIELD STRENGTH (±1%)
Room temperature
16.2 mm (0.64 in) magnet air gap/
3.6 mm (0.14 in) sample access
21.7 kOe (2.17 T)26.2 kOe (2.62 T)31 kOe (3.1 T)
23 mm (0.9 in) magnet air gap/
10 mm (0.4 in) sample access
18.1 kOe (1.81 T)23.4 kOe (2.34 T)28.5 kOe (2.85 T)
29 mm (1.14 in) magnet air gap/
16 mm (0.64 in) sample access
15.3 kOe (1.53 T)21.2 kOe (2.12 T)25 kOe (2.5 T)
With oven or cryostat option
38.1 mm (1.5 in) magnet air gap/
6.4 mm (0.25 in) sample access
11.8 kOe (1.18 T)18.3 kOe (1.83 T)23 kOe (2.3 T)
With single-stage variable temperature option
33 mm (1.3 in) magnet air gap/
6.4 mm (0.25 in) sample access
13.5 kOe (1.35 T)19.4 kOe (1.94 T)25.0 kOe (2.5 T)
MOMENT MEASUREMENT
Noise floor (emu RMS)
Room temperature
 
0.1 TC; 0.1 s/pt
(no averaging)
0.75 µemu
0.1 TC; 1 s/pt0.4 µemu
0.1 TC; 10 s/pt0.1 µemu
With oven or cryostat option,
0.1 TC, 10 s/pt
2.5 µemu
With single stage variable
temperature option 0.1 TC, 10 s/pt
1.25 µemu
With vector option 0.1 TC, 10 s/pt5 µemu3 µemu
Dynamic range1 × 10-7 to 103 emu
Time constants (TC)0.1, 0.3, 1.0, 3.0, or 10.0 s
Moment stability2Less than 0.05% RMS of full scale/day at constant field, constant temperature, and highest range after a 5 h warm-up period
ReproducibilityBetter than ±0.5%, or ±0.1% of full scale, fixed rotation angle and range, with sample replacement
Moment accuracyBetter than 1% of reading ±0.2% of full scale with a geometrically identical test sample and calibrant
Sample mass0 to 10 g (higher mass can be accommodated with decreased performance)
FIELD MEASUREMENT
Field accuracy1% of reading or ±0.05% of full scale
Field resolution
2800 kA/m (35 kOe)
 
8 A/m (0.1 Oe)
280 kA/m (3.5 kOe)0.8 A/m (0.01 Oe)
28 kA/m (350 Oe)0.08 A/m (0.001 Oe)
Closed loop field control stability<0.05% RMS of full scale/h
MANUAL ROTATION
Setting resolution<1°
Setting reproducibility<1°
Rotation range0 to 730°
CERTIFICATIONS
CEyes
Application of Council directives73/23/EEC; 89/336/EEC
Standard to which conformity is declaredEN61010-1: Overvoltage II, Pollution Degree II; EN61326: Class A, Annex B
UTILITIES
Total system cooling water power dissipation (50 or 60 Hz) — see list of available recirculating chillers4.25 kW; 7.45 kW with optional 7401813.4 kW; 16.6 kW with optional 7401813.4 kW; 16.6 kW with optional 74018
1 With standard 740EMSC coils
2 Tested with an AlNiCo sample in a 1 inch sensing coil gap after system warm-up period with the sample vibrating at field.
The AlNiCo samples’ moment must be >50% of full scale moment range.
 
7400 Series VSM Equipment
 
 74047407 7410
VSM head driveModel 740H
VSM frame1
Control electronicsModel 736
Linear amplifierModel 142
Bipolar magnet power supplyModel 643Model 648
ModeDC current source
Maximum output±35 V/±70 A (2450 W)±75 V/±135 A (9.1 kW nominal)
AC line input204/208 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 ±10%, 41 A/phase;
208 VAC ±10%, 40 A/phase;
220 VAC ±10%, 38 A/phase;
230 VAC ±10%, 37 A/phase;
380 VAC ±10%, 23 A/phase;
400 VAC ±10%, 21 A/phase;
415 VAC ±10%, 21 A/phase

Cooling water requirementsTap water or closed cooling system
(optional chiller available) +15 °C to +30 °C
Tap 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 gal)/min minimum
Pressure drop10 kPa (1.5 psi) at 5.7 L (1.5 gal)/min minimum for power supply only159 kPa (23 psi) t 7.6 L (2 gal)/min minimum for power supply and mandatory flow switch
ElectromagnetModel EM4-HVAModel EM7-HVModel EM10-HV
Pole diameter100 mm (4 in)180 mm (7 in)250 mm (10 in)
Pole cap face diameter 51 mm (2 in)51 mm (2 in)50 mm (2 in)
Field homogeneity ±0.1% over 10 mm3 (0.4 in3)±0.1% over centered 51 mm (2 in) diameter circle±0.1% over centered 51 mm (2 in) diameter circle
Cooling water requirements Tap water or closed cooling system
(optional chiller available)
Tap water or closed cooling system
(optional chiller available)
Tap water or closed cooling system
(optional chiller available)
Inlet temperature 15 – 25 °C (59 – 77 °F)15 – 32 °C (59 – 89 °F)15 – 25 °C (59 – 77 °F)
Flow rate 7.6 L (2 gal)/min11.4 L (3 gal)/min15 L (4 gal)/min
Pressure drop 200 kPa (30 psi)220 kPa (32 psi)200 kPa (30 psi)
Water chiller capacity2.5 kW (8,530 BTU)/h5 kW (17,060 BTU)/h10 kW (34,120 BTU)/h
Hall probe High stability; 74 mm (2.9 in) aluminum stemHigh stability; 203 mm (8 in) aluminum stem
Pick-up coils740EMSC (25.4 mm (1 in))
Instrument console483 mm (19 in) rack
Computer with IDEAS™ softwareModel 740905
 
 
7400 Series VSM Options Specifications
Model 74018 variable temperature cryostat
With LHeTemp range4.2 K base, 5.5 K to 450 K control
Temp stability±0.1 K
With LN2Temp range77.6 K, 85 K to 450 K
Temp stability±0.2 K
Temperature resolution0.001 K
Cool-down time5 min (15 min initial cool-down)
Nominal ramp rateContinuous flow
LHe liquid usage<1 L/h when operating >7 K
LN2 liquid usage<1 L/h when operating >7 K
InsulationVacuum
Sample zone dimensions Bore size7.1 mm (0.28 in)
Outside diameter22.4 mm (0.88 in)
 
 
Model 74033 autorotation
Full range of rotation-10 to 730°
Setting resolution<1°
Setting repeatability<1°
 
Model 74034 high temperature oven
Temperature range303 K to 1273 K
Temperature stability±0.1 K
Temperature resolution0.001 K
Nominal ramp rate353 K/min at maximum heating rate of 80 W
InsulationVacuum plus multiple reflective shields
Sample zone dimensions Bore size7.1 mm (0.28 in)
Outside diameter25 mm (1.0 in)
 
Model 74035 single stage variable temperature option
Temperature range78 K (base), 100 K to 950 K (control)
Temperature stability±0.1 K
Temperature resolution0.001 K
GassesLN2 and nitrogen gas for T<350 K;
argon for T>350 K
Cool-down time15 min from room temp to 100 K,
40 min from 1000 K to room temp
Nominal ramp rate
(in the domain)
5 K/min
Hold timeContinuous flow
LN2 usage<0.75 L/h >100 K – 350 K
Nitrogen gas usage3.2 L/min 100 K – 350 K
Argon gas usage3.6 L/min
InsulationVacuum
Sample zone dimensions Bore size7.1 mm (0.28 in)
Outside diameter17.8 mm (0.7 in)
 
Model 74046 magnetoresistance (MR) probe
Number of probes 4
Probe pin to pin spacing0.9 mm
Total 4-pin spacing2.7 mm
Nominal sample size4.5 mm × 4.5 mm cross-section, maximum height 3 mm
Temperature range20 K to 673 K
Current ranges6 ranges; 1 µA to 100 mA
Resistance ranges9 ranges: 0.2 Ω, 2 Ω, 20 Ω, 200 Ω, 2 kΩ, 20 kΩ, 200 kΩ, 2 MΩ, up to 10 MΩ
Probe tip compliance voltage0 V to 5 V, measurement
0 V to 100V, contact formation
 74047407 7410
Model 74032 standard vector coils4
Pole caps102 mm (4 in)5102 mm (4 in)5100 mm (4 in)5
Air gap50.8 mm (2 in)50.8 mm (2 in)50.8 mm (2 in)
Maximum applied field7.7 kOe (0.77 T)12.5 kOe (1.25 T)20 kOe (2.0 T)
RMS noise (Y coils)5 µemu5 µemu3 µemu
Sample access25 mm (1 in)
Torque density minimum
(at maximum applied field)
38 × 10-3 dyn•cm62 × 10-3 dyn•cm60 × 10-3 dyn•cm
4 With 730ESC coils; purchased separately 5 Pole caps sold separately