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6X-1110B

5.1.1  Schrader Valve

The Schrader Valve is used to pressurize the housing. To maintain pressure in the barrel, add dry nitrogen 
to approximately 5 psi (34 kPa). 

5.1.2  Pressure Relief Valve

The Pressure Relief Valve limits the maximum pressure in the camera head to approximately 20 psi (138 
kPa).

CAUTION: 

Exceeding 20 psi can cause damage to the relief valve.

IMPORTANT:

 Due to high temperature, high altitude, or other reasons, the pressure differential between 

the inside and outside of the camera head may increase. The pressure relief valve opens when pressure 
rises above 20 psi (138 kPa), allowing excess internal pressure to bleed off. After the camera system re-
turns to normal conditions, the internal pressure must be checked and the camera housing must be pres-
surized with dry nitrogen to bring the pressure back to approximately 5 psi +/- 1 psi. See Section 5.1.3 for 
pressurization procedure.

5.1.3  Pressurizing Procedure

The following items are required for pressurizing:

• 

A tank of dry nitrogen with a regulator 

• 

A hose with an air chuck to connect to the Schrader valve 

NOTE:

 Preferred gas for pressurization is dry nitrogen. Argon is an acceptable substitute. Do not use com-

pressed air, as it may contain oil, moisture, or other contaminants.

Below are steps for 

recharging

 the camera housing: 

1.  Set the regulator gauge to approximately 7-10 psi. (A regulator kit ER2914 and dry nitrogen 

 

rechargeable kit EH8000R are available for purchase.)  

2.  Remove the plastic tubing from the pressure relief valve, if purge is required.

3. 

Remove the cap from the Schrader valve, place the air chuck on the Schrader valve and fill the 

housing with nitrogen.

4.  Carefully lift the poppet on the pressure relief valve and purge the camera housing with dry nitrogen 

for a minimum of one minute by manually lifting the relief valve on the rear plate while injecting the 
dry nitrogen into the Schrader valve.

CAUTION: 

Do not use a sharp object to open the pressure relief valve. Use care to avoid damage or 

contamination of the valve seat.

5.  Remove the air chuck and verify with a pressure gauge that the pressure is 5 psi +/- 1 psi. Press the 

pin in the center of the Schrader valve to release extra pressure from the barrel, if needed.

6.  Firmly install the cap on the Schrader valve to get a good seat. Cap is required for a proper seal.

7.  Install the tubing back on the pressure relief valve if it was removed.

Содержание ER 8800

Страница 1: ...HeliosTM Products INSTALLATION MANUAL Series ER 8800 Long Range Video Camera www CohuHD com info CohuHD com July 15 2014 Technical Manual 6X 1110B...

Страница 2: ...destal Mount Installation CohuHD p n 8186 1 12 3 1 2 Wall Mount Installation CohuHD p n 8186 2 13 3 1 3 Pole Mount Installation CohuHD p n 8186 3 14 3 1 4 Corner Mount Installation CohuHD p n 8186 4 1...

Страница 3: ...above website for the latest information NOTE All graphics contained within this document including screenshots and other displays are for reference use only and are subject to change Additional info...

Страница 4: ...iately upon discovery of the concealed damage Keep all cartons and packing materials To return the product to the factory for service please contact the Customer Service Department for a Re turn Mater...

Страница 5: ...be damaged by static discharge To reduce the risk of electric shock and damage to the unit by static discharge do not perform any servicing other than described in these instructions If the unit is de...

Страница 6: ...le For installation on a non grounded or insulated support the camera must be grounded with an adequate ground strap or wire between the camera and a nearby ground system or to a ground system install...

Страница 7: ...For more information on specifications and datasheets please refer to specific product pages at CohuHD s website 1 1 Optional Accessories The following optional cables and field connectors or field c...

Страница 8: ...that the system cable can be routed to the location of the mounting assembly See Chapter 3 for details on the installation procedure for recommended mounts Figure 1 shows an interconnection diagram fo...

Страница 9: ...ides all electrical connections for the camera system Table 1 lists pin functions of the camera connector which are identical to the corresponding pin functions of the mating connector Camera Connecto...

Страница 10: ...r mating system cable plugs for additional protection against moisture in severe conditions Coax Seal is the recom mended product Mounts poles and metallic conduits must be bonded to earth ground The...

Страница 11: ...558 005 Large corner mount CohuHD p n 7411425 001 Support strut CohuHD p n 7411558 003 Small corner mount CohuHD p n 7411558 004 5 Parapet mount kit CohuHD p n 8186 5 The kit includes Parapet mount Co...

Страница 12: ...and wall mount for installation on a pedestal See Figure 3 for a typical installation diagram and Figures 13 and 14 for mount dimensions Figure 3 Installation to a Pedestal Mounting Bracket Bolt 1 4 2...

Страница 13: ...ing Bracket Bolt 1 4 20 4 supplied Bolt 1 supplied Bolt Hex Head 1 4 20x3 4 L SS 3 Washer Spring Lock 1 4 SS 3 Washer Flat 1 4 SS 3 supplied Adjustable Head Support Strut Clamp Swivel Bolt Hex Head 1...

Страница 14: ...gure 5 Installation to a Pole Mounting Bracket Bolt 1 4 20 4 supplied Bolt 1 supplied Bolt Hex Head 1 4 20x3 4 L SS 3 Washer Spring Lock 1 4 SS 3 Washer Flat 1 4 SS 3 supplied Adjustable Head Wall Mou...

Страница 15: ...Bolt 1 4 20 4 supplied Bolt 1 supplied Bolt Hex Head 1 4 20x3 4 L SS 3 Washer Spring Lock 1 4 SS 3 Washer Flat 1 4 SS 3 supplied Adjustable Head Wall Mount Large Corner Mount Small Corner Mount Washer...

Страница 16: ...t Mounting Bracket Bolt 1 4 20 4 supplied Bolt 1 supplied Bolt Hex Head 1 4 20x3 4 L SS 3 Washer Spring Lock 1 4 SS 3 Washer Flat 1 4 SS 3 supplied Adjustable Head Support Strut Clamp Swivel Bolt Hex...

Страница 17: ...e with the stainless steel mounting straps supplied Use a flat blade screw driver or 5 16 inch socket wrench not supplied to tighten strap screws See Figure 5 A parapet Fasten the parapet mount adapte...

Страница 18: ...the wall mount See Figures 4 and 7 A corner and pole Attach the small corner mount to a wall or the small pole mount to a pole and secure with fasteners not supplied or with the stainless steel mounti...

Страница 19: ...ll Dimensions 3 3 Mounting Hole Pattern 8 5 215 9 26 5 673 1 9 8 248 9 11 9 302 3 4 8 121 9 Dimensions in inches mm 2 00 50 8 625 15 9 1 4 20 Thread Swage nut 5 places 2 75 69 85 2 00 50 8 625 15 9 Di...

Страница 20: ...gure 13 Pedestal Mount Dimensions in inches mm CohuHD p n 7411542 001 Figure 14 Adjustable Head Dimensions in inches mm CohuHD p n 7411558 005 Figure 15 Mount Adapter Dimensions in inches mm CohuHD p...

Страница 21: ...B C 57 2 18 50 469 9 20 00 508 0 6 00 152 4 Figure 16 Wall Mount Dimensions in inches mm CohuHD p n 7411417 001 17 0 480 0 Support Strut Clamp Clamp Swivel Wall Swivel Wall Mount Figure 17 Support St...

Страница 22: ...25 SLOT 11 9 X 6 4 6X Figure 18 Pole Mounts Dimensions in inches mm CohuHD small pole mount p n 7411558 002 and large pole mount p n 7411408 001 C A B 4 00 101 6 2 00 50 8 0 37 9 4 4X 1 50 38 1 3 00 7...

Страница 23: ...talls on the inside of a parapet that is at least 18 inches 457 2 mm high Has sixteen 0 37 inch 9 4 mm diameter holes for mounting to a parapet with fasteners of a suit able size Fasteners are not sup...

Страница 24: ...m content downloads Under Software Protocol Downloads Setup Test Applica tions click Analog WinMPC 4 2 Checkout Procedure When power is applied to the camera system the initialization process begins A...

Страница 25: ...the factory dry packs of desiccant are secured inside the camera housing The hous ing is then sealed and purged with dry nitrogen to remove moist air from inside the housing The purging process provid...

Страница 26: ...ed gas for pressurization is dry nitrogen Argon is an acceptable substitute Do not use com pressed air as it may contain oil moisture or other contaminants Below are steps for recharging the camera ho...

Страница 27: ...t warranty information http www CohuHD com warranty WarrantyStatement pdf 7 0 ER8800 Series Variants Applicable to the Manual 8882 7201 P55A Revision History Revision Date Comments Rev A 10 28 13 Init...

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