AW Gear Meters HUB-40EX User Manual

HUB-40EX

EXPLOSION-PROOF FREQUENCY OUTPUT SENSOR

OperaƟon & InstallaƟon Manual

Rev. 1.2

HUB-40Ex Sensor

AW Gear Meters

8809 Industrial Drive, Franksville, WI 53126

 web: www.awgearmeters.com

 Tel: [phone]

 Fax: [phone]

 Email: [e-mail]

HUB-40Ex User Manual rev1.2.docxError! Unknown document property name., 1/18/2012

PAGE: 2 of 4

User Manual

HUB-40Ex USER MANUAL

Introduction/ Features:

The HUB-40Ex is a frequency output, pickup sensor certified for use in explosion proof areas. The sensor detects the
rotation of an approved flow meter’s gears and emits a frequency signal proportional to the flow. The output signal is a
square wave pulse, which has a duty cycle of approximately 50%. MAG signal outputs are protected with a self-resetting
fuse. This fuse has a 50 mA nominal trip point. When a trip occurs, turn off power to the sensor and remove output load to
reset the fuse.

Compatible flow meters include:

 JVM-zzz-Ex Models
 JVS-zzz-Ex Models
 JVHS-zzz-Ex Models
 ZHM-zzz-Ex Models
 HPM-zzz-Ex Models
 HM-zzz-AC-Ex Models

Specifications:

 Supply Voltage: 10 to 24 VDC
 Supply Current:

o 8 mA @ 12 VDC
o 12 mA @ 24 VDC
o 65 mA MAXIMUM

 Sensor/Monitor Frequency Output: Flow dependent,

0.5 Hz minimum

 Output Amplitude:

o V
o V

= V

HIGH

= 0 Volts

LOW

SUPPLY

– 0.7 Volts

 Duty Signal: 50% + 15%

HUB-40Ex Dimensions:

 Connections: terminal block, ½” NPT (FEMALE)

conduit entrance.

 Temperature Ratings:

o -20°C to +60°C (-4°F to +140°F) ambient
o 85°C (185°F) maximum fluid temperature

 HUB-40Ex Certifications:

o CSA

 CL. I, DIV. 1, GR. C,D
 CL. II, DIV. 1, GR. E,F,G
 CL. III

 Enclosure Certifications: TYPE 4X

HUB-40Ex Sensor

AW Gear Meters

8809 Industrial Drive, Franksville, WI 53126

 web: www.awgearmeters.com

 Tel: [phone]

 Fax: [phone]

 Email: [e-mail]

HUB-40Ex User Manual rev1.2.docxError! Unknown document property name., 1/18/2012

PAGE: 3 of 4

User Manual

Special installation instruction for use in Hazardous Area environments

Figure 1: Hazardous Area certification tag

HUB-40Ex models are explosion-proof flow meter sensors, which may be used in Class I, Division 1 locations. Figure 1
above is a sample of the nameplate that should be clearly attached to each unit. Please make sure this nameplate is on
the unit and that the information matches what is shown above, prior to installation. If either the nameplate is not on the
unit or the unit nameplate does not match what is shown above, please notify AW-Lake Company to determine
appropriate course of action.

When installing the HUB-40Ex into an AW-Lake Company flow meter make sure the 3/8” NPT male portion of the sensor
housing is engaged by a minimum of five (5) threads into the flow meter in order to maintain the unit’s explosion proof
rating. HUB-40Ex models must be properly installed into a flow meter before power is applied. NOTE: It is strongly
suggested to use anti-seize grease on threads prior to installation to avoid galling.

Because the HUB-40Ex uses an explosion proof enclosure for its area protection, power must be removed from the unit
before covers are detached and seals are disconnected while in a hazardous area.

For proper installation, it is also necessary that the conduit entries on the junction box are properly sealed. To maintain
the unit’s explosion proof rating, anything threaded into the NPT conduit openings must engage by a minimum of five (5)
full threads. Original units received from AW-Lake Company are properly installed with a minimum five (5) full threads of
engagement when connected to a junction box and should not be tampered with. NOTE: It is strongly suggested to use
anti-seize grease on threads prior to installation to avoid galling.

When wiring the unit, please make sure to observe any national or local codes that may be required. An explosion-proof
seal is required within 18 inches (450mm) of the unit. Make sure units are powered by a Class 2 power supply for proper
regulation. NOTE: Power must be removed from the unit before the Swivel Collar on the hub adapter can be loosened or
adjusted.

Removal of the external housing ground terminal is not permitted for safety reasons. Please make sure to follow local
electrical code practices when installing equipment in hazardous areas.

HUB-40Ex Sensor

AW Gear Meters

8809 Industrial Drive, Franksville, WI 53126

 web: www.awgearmeters.com

 Tel: [phone]

 Fax: [phone]

 Email: [e-mail]

HUB-40Ex User Manual rev1.2.docxError! Unknown document property name., 1/18/2012

PAGE: 4 of 4

User Manual

Installation:

 Ensure that the sensor cavity of the flow meter is free of debris prior to installation.
 Mount the HUB-40Ex into the sensor cavity and fasten threads. NOTE: REFER TO SECTION TITLED Special

installation instruction for use in Hazardous Area environments FOR PROPER INSTALLATION

REQUIREMENTS!

 Slightly loosen Swivel Union nut and adjust the junction box in the desired orientation.
 Tighten the Swivel Union nut while maintaining the orientation of the junction box. To properly seal surfaces from

external environment, apply 65 ft-lbs (+/- 4 ft-lbs) of torque. It is recommended to use anti-seize grease on threads to
avoid galling.

 Remove conduit plug from the junction box to allow wire access, and remove the junction box lid to allow access to

terminal block connections.

 Connect the wires to the appropriate terminals shown in the wiring guide.
 Reapply the junction box lid until fully engaged and fasten setscrew.
 Seal off conduit connection. NOTE: REFER TO SECTION TITLED Special installation instruction for use in

Hazardous Area environments FOR PROPER INSTALLATION REQUIREMENTS!

Wiring Guide:

Part Number Guide: