MECHANICAL MELT PRESSURE GAUGE
M5 SERIES
All models are rugged, totally self-contained, and allow
the user to benefit from the improved efficiency and quality that goes with pressure monitoring.
The Gefran melt pressure gauge provides reliable, maintenance-free, localized pressure indication. The small
capillary tube filled with a special medium isolates the
gauge housing from potential thermal damage.
TECHNICAL SPECIFICATIONS
Nominal Accuracy including L <±1.0% FSO
Linearity, Repeatability, Hysteresis
Measurement Range 0–350 or 0–700 bar
0–5000 or 0–10000 psi
Maximum Overpressure 1.5 x FSO
Measurement Principle Bourdon tube
Housing Temperature Range -30–85°C (-22–185°F)
Maximum Diaphragm Temperature 400°C (750°F)
Zero drift due to change 0.02 bar/°C
in process temperature (15 psi/100°F )
Material In Contact Standard 15-5PH SS(GTP coated)
with Process Medium
Thermocouple (model M52) STD : type “J” (isolated junction)
MAIN FEATURES
• Economically priced
• 1.5 times overload capacity
• Easy-to-read display
• 1/2-20 UNF thread standard, M18 x 1.5 also available
• 15-5 PH stainless steel diaphragm with GTP coating
standard (others available on request)
• No power required
M50 The rigid stem configuration makes installation fast
and easy.
M51 The flexible configuration is designed for applica-
tions requiring further thermal isolation or where
installation would be otherwise difficult or impractical.
M52 The pressure/temperature configuration requires
only one mounting hole for the measurement of both
process values.
FSO = Full Scale Output (output signal at nominal pressure)
ACCESSORIES
Accessories
Mounting bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SF18
Dummy plug for 1/2-20UNF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SC12
Dummy plug for M18x1.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SC18
Drill kit for 1/2-20UNF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .KF12
Drill kit for M18x1.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .KF18
Cleaning kit for 1/2-20UNF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CT12
Cleaning kit for M18x1.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CT18
Thermocouple for M52 model
Type “J” (153mm – 6” stem) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TTER718
MECHANICAL DIMENSIONS
C
16
[5/8”]
Ch
[Hex]
ø12.7
[ø0.5”]
D5
ø10.67
[ø0.42”]
D4
D1
ø10.49
±0.025
[ø0.413” ±0.001]
D3
ø7.8
-0.05
[ø0.307” -0.002]
D2
1/2-20 UNF
A
B
5.56 -0.26
[0.219” -0.01]
11.4
[0.45”]
15.75
[0.62”]
C
19
[3/4”]
Ch
[Hex]
ø18
[ø0.71”]
D5
ø16
-0.4
[ø0.630” -0.015]
D4
D1
ø16
-0.08
[ø0.630” -0.015]
D3
ø10
-0.05
[ø0.394” -0.002]
D2
M18x1.5
A
B
6 -0.26
[0.236” -0.010]
14.8 -0.4
[0.580” -0.016]
19
[0.75”]
M50
M50
M52
M52
M51
M51
ø 4.7 [ø0.018] Panel mounting
Zero
adjustment
ø 4.7 [ø0.018] Panel mounting
Zero
adjustment
ø7.5 [ø0.30’] 457 [18’]
Flexible armor
ø7.5 [ø0.30’] 457 [18’]
Flexible armor
Zero
adjustment
ø7.5 [ø0.30’]
108 [4.5’]
Flexible armor
ø 4.7 [ø0.018] Panel mounting
Termocoppia tipo J
con connettore
NOTE : dimensions refer to rigid stem length option “4” (153 mm – 6”) and flex length option “D” (457mm – 18”)
WARNING : For installation use a maximum tightening torque of 56 Nm(500 in-lb)
DTS_M50_0208_ENG
ORDER CODE
GEFRAN reserves the right to make any kind of design or functional modification at any moment without prior notice.
M
000
5 0 L
OUTPUT SIGNAL
Mechanical Gauge 5
VERSION
Rigid Stem 0
Rigid Stem + Flex 1
With Thermocouple 2
CONNECTOR
None 0
ACCURACY CLASS
1.00% FSO L
RANGE
bar psi
350 B35D 5000 P05M
700 B07C 10000 P10M
000 = standard version
Special or customized versions available on request
FLEXIBLE LENGTH (mm, inches)
Standard (M50)
0 none
Standard (M51, M52)
D 457 mm, 18”
E 610 mm, 24”
F 760 mm, 30”
Available on request
A 76 mm, 3”
B 152 mm, 6”
C 300 mm, 12”
G 914 mm, 36”
H 1067 mm, 42”
I 1220 mm, 48”
J 1372 mm, 54”
K 1520 mm, 60”
RIGID STEM LENGTH (mm, inches)
Standard (M50, M51, M52)
4 153 mm, 6”
5 318 mm, 12.5”
Available on request
1 38 mm, 1.5”
2 50 mm, 2”
3 76 mm, 3”
6 350 mm, 14”
7 400 mm, 16”
8 456 mm, 18”
THREAD
Standard
1 1/2-20 UNF
4 M18x1.5
Examples
M52-0-L-B07C-1-4-F-000
Mechanical melt pressure gauge with type “J” thermocouple, 1/2-20 UNF thread, 700 bar full scale output,
1.0% accuracy class, 153 mm (6”) rigid stem, 760 mm (30”) flexible armor
M50-0-L-P05M-1-4-0-000
Mechanical melt pressure gauge, rigid stem, 1/2-20 thread, 5000 psi full scale output, 1.0% accuracy class,
153 mm (6”) rigid stem
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