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Dimensions [mm (in.)]
1/4 in. NPT Female
29
(1.14) dia.
M12x1
33
(1.3) dia.
27
(1.06)
20
14
(0.79)
(0.55)
1/4 in.
NPT
25 (0.98)
± 0.1 dia.
Wiring Diagrams
4...20 mA
(+)
1
4
2
3
Mating Cables
889D-F4AC-2 (M12x1 connector)
889D-R4AC-2 (M12x1 right angle connector)
Commissioning
ATTENTION: Before commissioning, the pressure transmitter must be subjected to a visual inspection.
• Fluid leakage is indicative of damage.
• Only use the pressure transmitter if it is in perfect condition concerning safety.
Making the Mechanical Connection
• While mounting, make sure that the sealing faces at the instrument and the measuring point are clean and undamaged.
• Only screw or unscrew the instrument via the spanner flats and to the prescribed torque with an appropriate tool. The correct torque
depends on the dimensions of the process connection and the gasket used (form/material). When screwing or unscrewing the pressure
transmitter, do not use the housing as contact surface.
• Be careful not to cross-thread.
•
Max torque is 50 N•m (442.54 lb•in).
1/4 in. NPT Male
29 (1.14) dia.
M12 x 1
12
(0.47)
33 (1.3)
27
(1.06)
ca./approx.
13 (0.51)
1/4 in. NPT
4...20 mA
(-)
Rockwell Automation Publication 836P-IN002B-EN-P - December 2017
Process Connection
G 1/4 BSPP
21.3
(0.84)
13
(0.51)
2
(0.08)
G 1/2 B EN837
20
(0.79)
G 1/2 B
3
EN837
(0.12)
Process Connection
Measuring Cell
Piezoresistive measuring cell and metallic measuring diaphragm
Measurement and monitoring of absolute and gauge pressures
Application
Thread
− 1/4 NPT female
Process connection
− 1/4 NPT male
− G1/4 BSPP male
Non-display Solid-state Pressure Transmitter
G1/4B
27
EN837
(1.06)
29.5 (1.16) dia.
7/16-20 UNF
12
7/16-20 UNF
(0.47)
SAE J514
O-ring BOSS
G 1/2B
SAE 7/16-20 UNF O-ring BOSS
3
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