Home
Jets
Introduction
Jet Pump General Info
Introduction to Jet Versatility
Principle of Operation
Model Selection Guide
Pumping Liquids with Liquid
Pumping Liquids with Steam
Pumping Gases with Steam/Gas
Pumping Gases with Liquid
Heating Liquids In-Tank
Heating Liquids In-Line
Mixing Liquids
Transporting Solids
Additional Jet Products
Problems/Solutions Using Jets
Eductor Application Form
OnLine JetSizing Application
Gages & Gagecocks
Introduction
Armored Flat Glass Gages
Glass Information
Low/Medium/High Pressure Flat Glass Gages
Large Chamber, Weld Pad & Ultra High Flat Glass Gages
Steam/Water Flat Glass Gages
Offshore Gage Glasses
Gagecocks
Series 100, 200, 300 & 400
Series 500, 700, 550, 750 & 600
Tubular Glass Gages
Series N2, K2, K3 & N6 & N7
Magnetic Liquid Level Gages
Introduction
Magnetic Gage General Info
Follower/Flag Style Indicators
Point Level Control Measurement
Continuous Level Measurement
Top Mount & Mini
Options & Accessories
Magnetic Gage Application Form
Sight Flow Indicators & Sight Windows
Introduction
ANSI
Dual-Window
Lined
Full-View
Threaded Window Indicators
Angled
Threaded Sight Windows
Indicator and Window Accessories
Sanitary
Sanitary Sight Windows
Electronic Level Instrumentation
Introduction
Continuous Level Transmitters
Ultrasonic Gap Switches
Ultrasonic Transmitters
Electronic Liquid Level Measurement Application Form
Boiler Trim Products
Introduction
Series 1A
Series 2A
Series 4A
Series 12A
Series 12B
Water Columns
Steam/Water Flat Glass Gages
Literature
Contact Us/
Locate Distributor

News
FAQ
Distributor Login
Tyco Flow Control


Search

320 Locust Street
Prophetstown, IL 61277
(815) 537-2311 Phone
(815) 537-5764 Fax
eMail: Click Here

 

Ultrasonic Continuous Level Transmitters

Model 661 Series

The LEVELMARK™ Model 661 Level Transmitter is a Non-Contact continuous level measurement system that determines level by measuring the time of flight of an ultrasonic signal.  The system consists of an electronic controller/transmitter and a piezoelectric based transducer that is mounted above the material being measured.  A burst of electrical energy is generated by the controller and delivered to the system's transducer.  The transducer converts this electrical energy into an ultrasonic signal that is transmitted through the atmosphere to the surface of the material being measured.  When the signal reaches the material it is reflected back to the transducer where it is received as an echo and converted back into electrical energy.  The controller/transmitter measures the total time of flight (time of transmit to time of receipt as an echo).  The distance from the face of the transducer to the surface of the measured material is a product of the speed of sound and 1/2 the time of flight.  The controller can easily determine the level by subtracting the measured distance from the vessel height.

Features:

  • Non-Contacting
  • Easy Calibration
  • Integral mounting
  • 4 to 20 mA output (std.); Display, Alarms, & remote mounting (Optional)
  • Integral Temperature Compensation (std.)
  • User Selectable First Echo Rejection
  • User Adjustable Delay; 0 to 30 Seconds
  • Echo Loss & Fault Indication; Output rises to 22 mA ± 0.5 mA
  • Designed to meet XP requirements; 316SS Transducer only
Specifications
Enclosure:
NEMA 4/7 Aluminum (Integrally
mounted systems); NEMA 4X
Fiberglass (Remotely mounted
systems & systems with options)
Input Power:
105 to 130 Vac, 50 - 60 Hz(std.);
210 to 260 Vac, 50 - 60 Hz(optional);
21 to 28 VDC (optional)
Approvals:
316SS Transducer is FM- Approved/CSA-Certified XP; System is designed to meet XP requirements when provided with NEMA 4/7 Enclosure & 316SS transducer.
Max Range:
35 ft. (10.67 m) CPVC, PVC,
Kynar, & TFE Transducers;
30 ft. (9.14 m) 316SS Transducer
Resolution:
±0.4% of measured distance
(reading)
Optional Meter
Display:
3-1/2 digit 1" (25.4 mm) high LCD
Cal. Range:
4 mA input: -1000 to +1000;
20 mA input: 20 to 2000>4mA setting
Dead Zone:
12 in. (305 mm) min. CPVC, PVC,
Kynar, & TFE Transducers;
16 in. (406 mm) min. 316SS Transducer
Accuracy:
±0.5% of measured distance
(reading)
Span:
34 ft. (10.36 m) max. CPVC, PVC,
Kynar, & TFE Transducers;
28 ft. 8 in. (8.74 m) max. 316SS
Transducer
Repeatability:
±0.4% of measured distance
(reading)
Optional Relay Alarms
Cal. Range :
0 to 125% of span
Contacts:
SPDT Form C; rated to 2A, 28VDC & 120 Vac resistive
Deadband:
0.5, 1,2,4,8, & 16% of span, set with internal DIP switches
Output:
Isolated 4 to 20 mA into
1000 ohms max.
Calibration:
Rotary BCD switches (dial in span & dead zone)
Echo Loss Alarm:
22mA ±0.5mA
Max. Cable Length:
250 ft. (76 m)

  Tyco Flow Control Copyright © 2010 Tyco Flow Control. All rights reserved.