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Technical Instructions

Document No. 155-038P25

RL 147-2

April 1, 2005

RL 147 Positioning Relay

Siemens Industry, Inc.

Description

The RL 147 Positioning Relay is a compact, pneumatic device designed to provide

positive positioning of a pneumatic valve or damper actuator. The positioner provides

supply air pressure against the actuator diaphragm to initiate stem or shaft movement.

The actuator spring reverses the stem or shaft movement.

Features

 Rapid response

 Good repeatability

 Adjustable start point pressure

 Adjustable span

 Low air consumption

Product Numbers

See Table 1.

Specifications

Operating

Ambient Temperature Range

Storage -20 to 160°F (-29 to 71°C)

Operation 35 to 160°F (2 to 71°C)

Maximum Pilot Signal Pressure 30 psig (207 kPa)

Maximum Supply Air Pressure 60 psig (413 kPa)

Start Point Adjustment Range 3 to 10 psig (21 to 69 kPa)

Operating Span Adjustment Range 3 to 12 psig (21 to 83 kPa)

Response 1/10 psi Input change (0.7 kPa)

Air Capacity @ P = 2 psi (14 kPa) 410 scim (112 ml/s)

Air Consumption 40 scim (11 ml/s)

Physical

Air Connections 1/8-inch NPT

Body Materials Zinc

Cover Electro Plated Steel

Dimensions See Figure 14

Shipping Weight, with kit 2 lb (0.9 kg)

Summary of content (14 pages)

PAGE 1
Technical Instructions Document No. 155-038P25 RL 147-2 April 1, 2005 Powers™ Controls RL 147 Positioning Relay Description Features The RL 147 Positioning Relay is a compact, pneumatic device designed to provide positive positioning of a pneumatic valve or damper actuator. The positioner provides supply air pressure against the actuator diaphragm to initiate stem or shaft movement. The actuator spring reverses the stem or shaft movement.
PAGE 2
Technical Instructions Document Number 155-038P25 April 1, 2005 RL 147 Positioning Relay Table 1. Product Numbers for Positioning Relay and Mounting Kits. Description of Actuator Type Reference Product Numbers Page Positioning Relay Mounting Kit No. 3 Damper Actuator For actuators manufactured after 1/1/93 147-2000 147-104 10 No. 4 Damper Actuator 147-2000 147-314 10 No.
PAGE 3
RL 147 Positioning Relay Application, Continued Technical Instructions Document Number 155-038P25 April 1, 2005 A positioning relay can be connected to handle up to four identical No. 6 damper actuators or up to six identical No. 4 damper actuators if all actuators operate the same damper, and no more than 100 feet of 1/4-inch (6.4 mm) OD tube is used to connect them. All actuators connected this way must be identical (that is, same size, spring range, stroke, etc.).
PAGE 4
Technical Instructions Document Number 155-038P25 April 1, 2005 RL 147 Positioning Relay Positioning Relay Components Figure 3. Construction of the RL 147 Positioning Relay. Page 4 Item Replacement Part Number Description Number Require d 1 2 – – Cover Plate 1 1 Steel Zinc Die Casting 3 – Lever Assembly 1 – 4 – No. 8-32 Cover Screw 1 Steel 5 – Washer 1 Rubber 6 147-273 Pivot Screw 2 Stainless Steel Material 7 – No. 8-32 × 1/2“ Lg. Dual Pt. Set Screw 1 Steel 8 – No.
PAGE 5
RL 147 Positioning Relay Calibration Technical Instructions Document Number 155-038P25 April 1, 2005 Complete calibration instructions are included with each positioning relay. 1. Check that you have the correct feedback spring(s) attached. 2. Identify the desired operating span and the start point pressure. NOTE: In some cases, the actuator stem travel or stroke is not identical to the nominal value of the relay feedback spring.
PAGE 6
Technical Instructions Document Number 155-038P25 April 1, 2005 Calibration, Continued RL 147 Positioning Relay For spans of 11 psig or 12 psig (76 kPa or 83 kPa): 1. Move the span adjustment tab to the 10 setting on the feedback arm. Follow Steps 2 and 3 in Setting the span. 2. Move the feedback spring one hole away from the standard location for a span of 11 psig (76 kPa) and two holes away from the standard spring location for a 12 psig (83 kPa) span. See Figure 4. 3.
PAGE 7
RL 147 Positioning Relay Technical Instructions Document Number 155-038P25 April 1, 2005 Calibration, Continued 1. Using the squeeze bulb, apply pressure to the relay. Note the pressure at which the stem or shaft begins to move. Adjusting the Span 2. Continue to apply pressure until the stem or shaft completes its full stroke. Note the pressure. 3. Check the difference between the two pressures; this is the span. 4.
PAGE 8
Technical Instructions Document Number 155-038P25 April 1, 2005 RL 147 Positioning Relay Calibration, Continued Table 2. Spring Selection. Spring Travel Range Nominal Max. Allowable Inches (mm) Inches (mm) Part Number Recommended Springs Size and Color 5/32 (5.0) 1/4 (6.4) 1/4 (6.4) 3/8 (9.5) 147-298 147-289 Small Green Small Cadmium Plate 3/8 (9.
PAGE 9
RL 147 Positioning Relay Technical Instructions Document Number 155-038P25 April 1, 2005 Calibration, Continued Table 5. Stem Travel Listed by 591 or 593 Flowrite Valve Product Number.
PAGE 10
Technical Instructions Document Number 155-038P25 April 1, 2005 RL 147 Positioning Relay Calibration, Continued Table 6. Mounting Kit 147-104 for the No. 3 Damper Actuator. Item Description 1 Mounting Bracket Figure 6. Positioning Relay Mounted on the No. 3 Damper Actuator. Qty. 1 2 Feedback Spring (for 2-3/8" stroke) 1 3 Adjusting Screw 1-3/4" (44 mm) long 1 4 Wing Nut 2 5 Lock Washer 1 6 Flat Washer 1 7 Spring Arm 1 8 3/8-24 Hex Nut 1 9 Clevis 1 10 No.
PAGE 11
RL 147 Positioning Relay Technical Instructions Document Number 155-038P25 April 1, 2005 Calibration, Continued Table 8. Spring Selection for Adjustable Stroke of the No. 6 Damper Actuator. Actuator Stroke 3-1/4 to 4 (82 to 102) Adjusting Feedback Spring Screw Color Nominal Max Blue 4 (102) 4-1/4 4-1/2 (114) (108) long 2-29/32 to Cadmium 3 (76) 3-1/4 (74 to 82) 3-1/4 (82) 1-3/4 (44) long Figure 9. Positioning Relay Mounted on a VP 591 8-inch Valve Actuator. Figure 8.
PAGE 12
Technical Instructions Document Number 155-038P25 April 1, 2005 RL 147 Positioning Relay Calibration, Continued 1 9 Table 11. Kit 599-00426 for the Flowrite Series 599 8-inch Valve Actuator. LEVER ASSEMBLY POSITIONING RELAY FEEDBACK ARM 2 SPRING GUIDE 3 4 JAM NUT STEM NUT 7 RL0088.R1 4 Item Description RL 147 Positioning Relay Qty. 1 1 Mounting Bracket 1 2 Feedback Spring 1 3 Adjusting Screw 1 4 Wing Nut 2 7 Spring Arm 1 9 90° Elbow Connector 1 Figure 10.
PAGE 13
RL 147 Positioning Relay Technical Instructions Document Number 155-038P25 April 1, 2005 Calibration, Continued Table 13. Mounting Kit 147-277* for Flowrite 8-inch Valve Actuator Models 1 and 2.
PAGE 14
Technical Instructions Document Number 155-038P25 April 1, 2005 RL 147 Positioning Relay Calibration, Continued Table 15. Mounting Kit 147-311 for the VP 591/3 Flowrite Valve Actuator. Item 1 Qty. 1 Feedback Spring, Small Cadmium Plate 2 Feedback Spring, Small Red 2 Feedback Spring, Large Green 2 3 Adjusting Screw, 6-1/2" (165 mm) 1 4 Wing Nut 2 5 Lock Washer 1 6 Flat Washer 1 7 Spring Arm 1 8 5/16-18 × 1/2 long Cap Screw 2 9 90° Elbow Connector 1 2 Figure 13.