Transcript
MV Test gauges DN 150 Ranges : from -1...0 to 0...1000 bar For corrosive environment and fluids: MVX - MVE For non-aggressive fluids and environment: MVA - MVC Accuracy:
± 0.6 % (MVA, MVX) ± 0.25 % (MVC, MVE)
Anti-parallax mirror Conforms to EN 837 standard MV test gauges series are precision gauges used to calibrate (with pressure comparators)* or to check other industrial pressure gauges mounted on industrial equipments. A periodical checking against a deadweight tester is recommended in order to verify their initial accuracy.
Technical Data (20°C) Ranges
From -1...0 to 0...1000 bar (see standard graduations overleaf)
Blow-out disc
Accuracy MVA-MVX MVC-MVE
± 0.6 % of full scale ± 0.25 % of full scale
Degree of protection
IP 65 according to NF EN 60529
Sensing element MVA MVC-MVX-MVE
P < 60 bar: bronze / P ≥ 60 bar: 1.4404 (316L) P ≥ 2.5 bar: 1.4404 (316L) / P < 2.5 bar: 1.4571 (316 Ti)
Tube shape
P < 60 bar: In C / P ≥ 60 bar: Helicoil
Tube connection assembly MVA MVC-MVX-MVE
P < 60 bar: tinsoldered / P ≥ 60 bar: argon arcwelded Argon arc-welded
Elastomer. Positioned at the top of the pressure gauge. Ensures pressure balance with atmosphere. Blows out when pressure inside the case exceeds 0.6 bar (10 psi)
Mounting Type
Direct Surface mounting with 3 back lugs fixing
D A
F E
Flush panel mounting with front flange welded on to case
C
B
Connection MVA
MVC-MVX-MVE Thread
P < 60 bar: 23 mm hexagonal, brass P ≥ 60 bar: 22 mm square, 1.4404 stainless steel (316 L) 22 mm square, 1.4404 stainless steel (316L)
Options uncoded (have to be listed after the code number)
G 1/2 or 1/2 NPT
Cleanliness for oxygen service.
Case MVX-MVE MVA-MVC
1.4301 (304) stainless steel Steel, grey backed enamel
Bezelring
1.4301 (304) polished stainless steel. Bayonet lock type
Window
Gass, 3 mm thick
Window gasket
Elastomer. Ensures tightness between window and case
Toughened or laminated glass or perspex window.
Double or special graduations other than bar. Other threads smaller than or equal to G 1/2. Carrying case (only mounting type A-C-D). Calibration with certificate. Accuracy 0.5 % (out of EN 837 standard)
Mouvement MVA-MVX MVC-MVE
Stainless steel Stainless steel, mounted on rubies
Dial
Aluminium alloy, without zero stop. Fine graduations on 300° and black figures on white background (see subdivisions over leaf).Anti-parallax mirror to prevent reading errors.
Pointer
Aluminium alloy, balanced, black-painted, knifeedged end.
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Data sheet C11.01 Page 1
Dimensions (mm) Dimensions in mm Ø nominal A B C D E F J K L M P R S X Y Z Weight type D (kg)
150 150.2 85 180 168 25.5 23 5.5 56.5 39.3 68.5 142 54.5 * 151 145 31.5 0.88
Ordering Details - MV Mxx7 xx0 Bxx Model Pressure gauges Type MVA (0.6%) MC (0.25%) MVX (0.6%) MVE (0.25%)
1´ digit
59 72 74 76 77 79 81 82 12 15 16 18 19 20 22 24 26 27 29 31 33 35 38 39 41
2´... 3 digit VA VC VX VE
Dial diameter
4´ digit 7
ø 150 mm
Type of mounting Bottom connection, 3 back lugs Back connection, front flange Bottom connection, front flange Bottom connection Back connection, 3 back lugs Back connection
5´ digit
Hydraulic connection G 1/2 1/2 NPT
6´digit
Type of liquid filling Without filing
7´ digit
Measurement unit bar
8´ digit
Pressure range See codes in table
9´...10´ digit
A B C D E F 3 6
+ 0 + 0.6 + 1.5 + 3 + 5 + 9 + 15 + 24 + 0.6 + 1 + 1.6 + 2.5 + 4 + 6 + 10 + 16 + 25 + 40 + 60 + 100 + 160 + 250 + 400 + 600 + 1000**
0.005 0.01 0.02 0.02 0.05 0.05 0.01 0.2 0.005 0.005 0.01 0.02 0.02 0.05 0.05 0.1 0.2 0.2 0.5 0.5 1 2 2 5 5
Uncoded options : PNEUMATIC RECEIVER 0.2 - 1 bar - 3-15 psi
B
Design and specifications subject to change without notice
-1 -1 -1 -1 -1 -1 -1 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
subdivisions (bar)
** MVC-MVE with accuracy ± 0.25% and hysteresis 0.4%
0
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bar
code
M
0 - 10 lin. 0 - 10 √ 0 - 100 lin. 0 - 100 √ * Non linear internal scale.
subdivisions 0.1 * 1 *
xx
Data sheet C11.01 Page 2
UK/10-2002 This data sheet may only be reproduced in full.
* following connection shape (see overleaf) MVX and MVE, S = 22 MVA and MVC, S = 23 for P< 60 bar and S = 22 for P ≥ 60 bar.
