Cla-Val CDHS-33 - Manual (Page 2)

When Ordering, Please Specify
1. Catalog No. CDHS-33 (Orifice Downstream)
CDHS-33A (Orifice Upstream)
2. Materials Pilot Control
Adjustment Range
70 to 480 inches H2O Differential
End Connection
3/8" NPT
Temperature Range
Water: to 180°F
Materials
Pilot Control: Bronze ASTM B62
Trim:Stainless Steel Type 303
Rubber:Buna-N
® Synthetic Rubber
Available with optional Stainless Steel or Monel
materials at additional cost. Consult factory for details
Note: Available with Remote Sensing for orifice upstream,
specify CDHS-33A
Note: Total Shipping Weight: 8 Lbs.
Pilot Control Subassembly Specifications CDHS-33 Electronic Actuator Specifications
PO Box 1325 Newport Beach CA 92659-0325
Phone: 949-722-4800 Fax: 949-548-5441
CLA-VAL
CLA-VAL CANADA CLA-VAL EUROPE
4687 Christie Drive
Beamsville, Ontario
Canada L0R 1B4
Phone: 905-563-4963
Fax: 905-563-4040 Chemin dés Mesanges 1
CH-1032 Romanel/
Lausanne, Switzerland
Phone: 41-21-643-15-55
Fax: 41-21-643-15-50
© COPYRIGHT CLA-VAL 2012 Printed in USA
Specifications subject to change without notice. www.cla-val.com E-CDHS-33 (R-7/2012)
Represented By:
CDHS-33 Purchase Specifications
The Electronic Actuated Rate of Flow Control Pilot shall have an integral hydraulic pilot and electronic controller contained in a IP-68 rated
submersible enclosure to provide interface between remote telemetry and valve set-point control. It will compare a remote analog command
signal with an internal position sensor signal and adjust the hydraulic pilot control spring mechanism to a new set-point position. Remote
analog signal input shall be isolated and reverse polarity protected. 4-20 mA actuator position feedback output shall be supplied standard. A
second command control input shall be from dry-contact switch closure for clockwise or counter clockwise actuator rotation.
If power fails, the control pilot valve shall continue to control main valve to last set-point command. If the Remote Set-Point signal
is lost the actuator is programmable to go to either the 4mA, Last, or 20mA command set-point. No mechanical adjustments shall
be necessary to the actuator. The low and high position range adjustment shall be accomplished only with valve manufacturer's
components and instructions to be supplied in a separate kit. The assembly shall be supplied with 30 feet of cable.
The Electronic Actuated Rate of Flow Pilot Control shall be Cla-Val Model CDHS-33 as manufactured by Cla-Val, Newport Beach, CA.
• USB connection cable required when changing range
parameters or restoring range parameters after servicing
pilot control subassembly.
Options:
• Re-ranging software - free download from www.cla-val.com.
Ranging software makes it easy to set low (4mA) and
high (20mA) set-point limits.
Supply Power Input: 12V to 24V DC
No Load draw: 50 mA
Max. Load draw: 250 mA
Remote Command Inputs: •
4-20mA, analog signal
(isolated and reverse-polarity
protected)
• Dry contact closure (CW/CCW)
Position Feedback Signal: 4-20 mA
Alarm Output: Dry-contact closure (High/Low)
Speed of Rotation: Adjustable On/Off time, max 6 rpm
Diagnostic: LED Indicator
Loss of Power: Actuator will remain in last commanded
position.
Loss of Signal Position: Programmable - 4 mA, Last, or 20 mA
Electrical Connections: Single, 30 feet of permanently attached
cable with color-coded power supply and
signal wires
Mechanical Specifications:
Environmental
Protection Class: IP-68 (Temporary submersible)
Ambient Temperature: 15° to 150° F (-10° to 65° C)
Materials
Electronics Enclosure: Anodized Aluminum
Mechanical Housing: Bronze
Coupling Assembly: Stainless Steel
Gear Train: Stainless Steel, permanently lubricated