7/27/2019 LNC Transmitter

1/2

Specifications

Smith MeterTM PD Meter Counter Transmitter

Model LNC Transmitter

Contact Timing

40 to 50% on, the balance off.

Resolution

One to ten contact closures per revolution of the LNC

right-hand wheel.

Operating Temperature

Compensated for -40F to 160F (-40C to 71C).

Torque

3.0 oz-in (4 Ncm) maximum.

Life Expectancy

20 million contact closures at rated load or 2 million revo-lutions of input shaft. One hundred million at 1/2 ratingwith 10:1 ratio. Up to 200 million at reduced load.

Contact Protection

Arc suppression is required when used with ac circuits.Type and value of suppression will vary with coil and coilvoltages.

Housing

UL-listed, CSA-certified for use in Class I, Groups C andD hazardous locations.

TheModel LNC(Large Numeral Counter)Transmitteradapts to a 600 Series LNC to provide a contact closure

for signaling remote instrumentation. It chops a fixedlevel input voltage to form a square wave pulse (withminimum contact bounce) for use with transistorized cir-cuits such as an electronic drive control.

The LNC Pulse Transmitter consists of a rugged die castexplosion-proof housing with a screw-type cover for easyaccess to the pulsing mechanism. The transmitter uti-lizes a dry reed switch, magnet, and gear train, synchro-nized to provide 1 or 10 contact closures per revolution ofthe right-hand wheel, as required.

Features

UL-Listed, CSA-Certified Explosion-Proof.

Square Wave Pulse - Minimum contact bounce.

Choice of 1 or 10 contact closures per revolution ofright-hand wheel.

Reliable - Long life.

Models

Closures per RevolutionModel No. of Right-Hand Wheel

LNC-1 1LNC-10 10

Specifications

Contact Rating

Maximum Power: 50 VA resistive.Maximum Voltage: 250V (ac or dc).Maximum Current: 3 Amps continuous.

Type Switch

Dry Reed Switch (SPST).

Contact Resistance

500 milliohms.Actuating Time

0.001 second average.

Contact Bounce

0.001 second average.

Speed

0 to 2,500 contact closures per minute.

Issue/Rev. 0.1 (1/93) Bulletin SS01045

The Most Trusted Name In Measurement

7/27/2019 LNC Transmitter

2/2

Dimensions

Inches (mm)

Note: It is recommended that a sufficient length of flexible conduit be used to relieve stresses on the transmitter/housing interface caused byrigid conduiting.

Dimensions Inches to the nearest tenth (millimetres to the nearest whole mm), each independently dimensioned from respectiveengineering drawings.

8.5"(216)

2.5"(64)

3.7"(94)

5.1"(130)

4.0"(102)

3.6"(91)

1/2" - 14 NPTSee Note

#18 AWG Wire16" (406) long

5.0"(127)

6.8"(173)

13.8"(351)

2.0"(51)

Ordering Information

LNC transmitter can be either mounted at the factory orfield-mounted. Please specify 1 pulse per rev. (ModelLNC-1) or 10 pulses per rev. (Model LNC-10).

Wiring Diagram

Printed in U.S.A. 6/92 FMC Technologies Measurement Solutions, Inc. All rights reserved. SS01045 Issue/Rev. 0.1 (1/93)

Visit our website at www.fmctechnologies.com

The specifications contained herein are subject to change without notice and any user of said specifications should verify from the manufacturer that thespecifications are currently in effect. Otherwise, the manufacturer assumes no responsibility for the use of specifications which may have been changed and areno longer in effect.

Headquarters:1803 Gears Road, Houston, TX 77067 USA, Phone: 281/260-2190, Fax: 281/260-2191

Gas Measurement Products:Houston, TX USA Phone 281/260-2190Thetford, England Phone (44) 1842-82-2900Kongsberg, Norway Phone (47) 32/286-700Buenos Aires, Argentina Phone 54 (11) 4312-4736

Integrated Measurement Systems:Corpus Christi, TX USA Phone 361/289-3400Kongsberg, Norway Phone (47) 32/286-700San Juan, Puerto Rico Phone 787/274-3760United Arab Emirates, Dubai Phone 971 +4/331-3646

Liquid Measurement Products:Erie, PA USA Phone 814/898-5000Los Angeles, CA USA Phone 661/702-8660Slough, England Phone (44) 1753-57-1515Ellerbek, Germany Phone (49) 4101-3040Barcelona, Spain Phone (34) 93/201-0989Moscow, Russia Phone (7) 495/564-8705Melbourne, Australia Phone (61) 3/9807-2818

Beijing, China Phone (86) 10/6500-2251Singapore Phone (65) 6861-3011Chennai, India Phone (91) 44/450-4400