For use in the Denver Water Service Area

Materials Specification – 29
for
Supervisory Control And Data Acquisition (SCADA)

1. General:

Equipment not specified on this sheet must be approved by Denver Water.

2. Control Systems:

Bristol Babcock Distributed Process Controllers (3330 series) or Synergetics Data Acquisition Systems (4100 series). Another control system may be used only if pre-approved by the Process Control Section of Denver Water.

3. Pressure Transmitters:

Rosemount pressure transmitters model #2088G or Bristol Babcock pressure transmitters model #2508.

4. Control Enclosures:

Hoffman enclosures.

5. Flow Transmitters:

Rosemount differential pressure transmitters model #1151DP. Two transmitters are required for flow indications; a high range transmitter calibrated to 25% of the maximum design flow rate. Utilize an AGM Suppression Discriminator model #TA-4014-2 for range selection switching.

6. Intrusion Alarms:

Square-D, Class 9007 Type C. Limit switches for intrusion alarms shall be heavy duty precision turret head type. Limit switch assembly shall be enclosed in die cast zinc standard box oil-tight and water-tight with SPDT snap action, silver alloy type contacts. The turret head shall be standard pre-travel spring return with Viton shaft seals on lever arm, plunger and wobble stick boots shall be neoprene. Lever arm type shall be operated in both CW and CCW directions, this mode of operation if field convertible.

7. Water on Floor Alarms:

B/W controls, Model 7010-L-4-A-20 with Part No. 12-085000 Weight, Part No. 12-084900 Cord Grip, and Part No. 12-085200 Wall Mount Bracket, unless sump pumps are required and supplied with alarm limit switches.

8. Pressure Sight Gauges:

Ashcroft Type 1010. Pressure gauges shall be industry general service Grade 1A, 1.0% F.S. accuracy, 12 inch diameter face, epoxy painted aluminum case, AISI 316 stainless steel drawing C bourdon tube and socket, 1/4 inch NPT bottom piping connection, calibrated 0 to maximum operational psig.

9. Terminal Blocks:

Phoenix Controls #UK 6, 3-HESI, #UK 4-TG, #UK 5-MTK-P/P or equal. Din rail mount terminal blocks with disconnect. (Knife, plug or lever fuse disconnects, preferred).