FW MURPHY SPLC Series Dial Temperature Gage Installation Guide

SPLC Series Dial Temperature Gage
Installation Guide

Installation of 4-1/2 (114 mm) Dial Temperature Gage

Model SPLC and SPLFC Series.

Please read the following instructions and warnings before installation. Visually inspect the product for any damage that may have occurred during shipping.
The SPLC and SPLFC gage instruments have high and low limit contacts to monitor, alarm, or shut down. The SPLC has a flanged case and is the surface- mount version of the gauge. For these models, the gage pointer makes with two adjustable contacts to complete a pilot-duty circuit. The SPLFC has a round case and is the panel mounting version of the SPLC. A method to override the low-limit contact for a startup is provided on most models (see Operation Test Instructions).
Options:
-OS (oil sealed case) – the liquid-filled case for resistance against corrosion, environment, and vibration
-EX (explosion proof) – gage enclosed within the explosion-proof case for Class 1, Division 1, Groups C and D
-EL (EXLC) – explosion-proof less case: internal parts for EX Model

1. The product covered by this bulletin complies with EMC Council directive 89/336/EEC regarding electromagnetic compatibility except as noted.
2. Selected configurations are CSA-approved. Consult the factory for details.

Warnings
Before beginning installation of this product:

• Disconnect all electrical power to the machine
• Make sure the machine cannot operate during installation
• Follow all safety warnings of the machine manufacturer
• Read and follow all installation instructions

Precautions

• Do NOT exceed the rated temperature range
• Use shock mounts as necessary to protect from vibration
• Cutting or sharp bending the capillary will cause permanent damage to the gage and will void the warranty
• Excess capillary should be carefully coiled and secured away from damage
• Do not route capillary along the exhaust manifold
• Avoid routing capillary at a level higher than gage mounting

Case Mounting

Wall Mount
Flanged case design intended for a wall mount. Shown with shock mounts (optional). Flush Mount
A round case design to be mounted within a panel from 1/32 in. (1 mm) to 1/8 in. (3 mm) thick.
Options -OS for Flush Mount Case

Explosion-proof Case Mount
The explosion-proof case can be mounted from the face or rear.
Flush Mount/Wall Mount

Sensing Bulb and Thermowell Installation

Precautions
Cutting or sharp bending the capillary will cause permanent damage to the gage and will void the warranty. Excess capillary should be carefully coiled and secured away from damage. Do not route capillary along exhaust manifold. Avoid routing capillary at a level higher than gage mounting.

Installing Sensing Bulb

1. Install the 1/2 NPT adapter into the application.
2. Slip compression nut and ferrule onto bulb.
3. Insert the sensing bulb directly through the adapter and fully immerse it into the process without interference. Be sure to leave enough of the bulb to allow the compression nut and ferrule to be tightened.
4. Keep the bulbs active section in the middle of the process flow.
5. Tighten the compression nut and ferrule. This will keep the bulb in place and obtain a full seal.
   

Installing Thermowell
NOTE: The use of temperature transmitter grease or silicon grease on the tip of the sensing bulb is recommended to facilitate heat transfer to the sensing bulb junction.
Thermowell is recommended for high-pressure applications or corrosive environments.
It also allows the temperature sensor to be changed or adjusted without opening a connection to the process.

1. First, screw the thermowell into the process (pipeline).
2. Pass the sensing bulb through the nut and ferrule.
3. Fully insert the sensing bulb into the thermowell housing and secure it with the compression nut.

Limit Contacts / Indication Pointer Adjustments

Limit Contact Adjustments
Facing the dial, the left side knob is Low limit contact. The right side is High limit contact.
To set limit contact, turn the knob to the desired point on the scale.A. Contact arm-flex
B. Contact arm
C. Pointer Contact
D. Initial point of contact
E. Limit contact knob
Limit Contact Wiping Feature
The force of the pointer causes the flexible contact arm (A) to tilt resulting in a wiping action (D). This clears away film or corrosion formed on the contact surfaces.
Indication pointer Adjustments

To reset to zero or to a known value proceed as follows:

1. Turn off the power. Remove the snap ring and the lens/contact assembly (or open hinged cover).
2. Hold the pointer hub with the thumb and forefinger then turn the screw to the desired point. Avoid touching the gold flashed, and silver contact areas. See DETAIL “A”. Replace lens contact assembly and snap ring (or close hinged cover), and turn on the power.
   

NOTE: Span adjustments and recalibration must be performed by an authorized instrument technician with calibration equipment or return the unit to the factory.

Operation Test Instructions

SPLC and SPLFC Series

1. Perform operation test after the unit is installed and wired appropriately (see Typical Electrical Diagrams).
2. When the temperature is applied to the sensing bulb the pointer will travel in a clockwise direction. (Adjust contacts to desired set points.)
3. Place the toggle switch (SPLC Series only) in the start position or otherwise override low contact. After the indication pointer rises past the low limit contact, return the toggle switch to the run position.
4. To test the limit contacts, turn the limit contact to be tested until it touches the pointer. That will trip the control circuit.
5. Reset the shutdown or alarm circuit device.

Specifications

Dial: White on black, dual scale, °F and °C standard, 4-1/2 in. (114 mm) diameter
Case: Die cast aluminum, surface or panel mount
Capillary: PVC armored copper tube, 5 ft. (1.5 m) long standard Sensing Bulb:
Copper bulb std.: 1/2 in. (13 mm) OD; Length 7 in. (178 mm)
Pressure rating: 600 psi (4.1 MPa) [41 bar] Connection: 1/2 NPT compression fitting
NOTE: Use of thermowell is highly recommended
Switch Reset Deadband: Approximately 10% FS
Wire Connections (Surface Mount): 1/2 NPTF conduit/terminal block
Wire Connections (Panel Mount): Wire leads, 18 AWG (1.0 mm 2 ) x 9 in. (229 mm) long
Wire Connections (-OS): 1/2 NPTM conduit and wire leads, 18 AWG (1.0 mm 2 ) x 9 in. (229 mm) long
Overrange: Do not exceed 10% FS above full range
Item Weight: 8 lbs (3.6 kg) approx. Explosion-proof models: 22 lb. (10 kg) approx
Item Dimensions : 16 x 11 x 5-1/2 in. (406 x 279 x140 mm) approximately. Explosion-proof: 12 x 12 x 9 in. (305 x 305 x 229 mm) approximately
Accuracy Chart:

Typical Electrical Diagrams

WARNING
Perform the wiring operation with the power source OFF. Make sure the voltage and current requirements are within the gauge ratings. Before wiring determines voltage and polarity for the application. Use the appropriate wire size. All connections should be made using spade (forked) or ring terminals. For pigtail connections use wire nuts. A conduit is recommended to protect wires from damage.
SPLC and SPLFC
Contact Ratings: 1 SPDT, Center off; 2 A, 30 VDC / 0.1 A, 125 VAC pilot duty
NOTE: Diagram is shown with the pointer in the at rest (shelf) position.

In order to consistently bring you the highest quality, full-featured products, we reserve the right to change our specifications and designs at any time.  FW MURPHY product names and the FW MURPHY logo are proprietary trademarks. This document, including textual matter and illustrations, is copyright protected with all rights reserved. (c) 2022 FW MURPHY. A copy of our typical warranty may be viewed or printed by going to www.fwmurphy.com/warranty.

FW MURPHY PRODUCTION CONTROLS SALES, SERVICES & ACCOUNTING 4646 S. HARVARD AVE. TULSA, OK 74135
MANUFACTURING 2151 RANDON DYER ROAD ROSENBERG, TX 77411 5757 FARINON DRIVE SAN ANTONIO, TX 18249| DOMESTIC SALES & SUPPORT
FW MURPHY PRODUCTS
PHONE: 918 951 1000
EMAIL: [email protected] WWW.FWMURPHY.COM
FW MURPHY CONTROL
SYSTEMS & SERVICES PHONE: 281 633 4500
EMAIL: CSS-SOLUTIONSOFWMURPHY.COM| INTERNATIONAL SALES & SUPPORT
CHINA PHONE: +86 511 8788 6060
EMAIL: INTERNATIONALOFWMURPHY.COM LATIN AMERICA & CARIBBEAN
PHONE: +1 918 770 8775 EMAIL: [email protected]
SOUTH KOREA
PHONE: +82 70 7951 4100 EMAIL: [email protected]
---|---|---

Read User Manual Online (PDF format)

Download This Manual (PDF format)

Download this manual  >>