Gefran M5 SERIES Data Sheet

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)