Back: Pump Monitoring & Protection

Table of Contents

Next: Acid Level Detection - Petro-Chemical

Application Data Sheet

Pump Mechanical Seal Leak Detection

Application:

Pump Mechanical Seal Leak Detection

Product:

Kayden CLASSIC 812 Series Flanged Thermal Dispersion Flow, Level, Interface & Temperature Switch & Transmitter

Description:

Flow and liquid level detection in drain line systems.

Problem:

Pumps require a form of mechanical seal, these seals will eventually break down and leak. Determining the point of failure is achieved by routine monitoring of the seal. Seal leak can be tolerated by directing the fluid into a recovery system by use of a drain line that directs the fluid into a storage container.

How is it determined when the leak is occurring and to what degree? The Kayden CLASSIC 800 Series Flow, Level, Interface and Temperature Switch/Transmitter will help you determine whether or not to shut down the pump or send out a maintenance crew to service the mechanical seal.

Solution:

A common "Pipeline Leak Detection" setup for No Flow Condition, Pump Protection:

Staff can monitor the storage container and recover the leaked fluid, however, the storage container will quickly be overwhelmed if the seal fails and floods the recovery system.
Monitor inside the drain to detect if there is a fluid present and if so inform the relevant party.
Monitor the liquid level in the drain pipe while monitoring the flow rate. It is now possible to choose both an alarm point and a shut-down point using the Kayden CLASSIC 800 Series Switch/Transmitter.

Kayden CLASSIC^™ 812

Customer Specified T

CLASSIC^™ 812 with
Customer Specified T

Kayden CLASSIC^™ 812

Customer Specified T

CLASSIC^™ 812 with
Customer Specified T

CLASSIC^™ 812 Flanged

Flow, Level, Interface & Temperature Switch & Transmitter

Flanged Process Connections - 316/316L Stainless Steel sensor standard
Exotic Alloys, Custom 'U' Lengths and Remote Mounted Electronics Available
Digital Microprocessor Technology - Settings configurable by user for Flow, Level, Interface & Temperature Sensing
No Jumpers - All Configurable Options are stored in Non-Volatile Memory
FM Explosion-proof Class I, Div. 1, Groups B, C & D
CSA/ANSI UL Flameproof Class I, Div. 1, Groups B, C & D
316/316L Stainless Steel & Exotic Alloy versions designed to ASME Section VIII Div. 1 2007 Latest Addenda and/or to be inserted in system complying with ASME/ANSI B31.3-2006 +2007 Addenda. Canadian Registration Number (CRN): 0F09437.2

Display Panel & Intelligent User Interface

The Kayden CLASSIC 800 Series Electronics Module is designed for quick and easy setup.

Display Panel & Intelligent User Interface

Relay 1 & 2
Set Point 1 & 2
Fault Alarm
Run Mode
Start-up Bypass Timer (for pump control)
LED Bar Graph for Flow Rate, Level or Interface Indication

Universal Power 12-24 VDC & 115-230 VAC standard
Two SPDT Relays - independently adjustable
4-20 mA Analog Output
"Smart Heater" function for power economy and increased heater life
Start-up Bypass Timer (for pump control)

Configuration Mode Features:

Adjustable Sensitivity
Zero & Span Adjustment
Modbus Addressable

Display Panel & Intelligent User Interface

Easy setup; no jumpers or trim pots
Continuous Self-test Diagnostics with Fault Indicator
Temperature Compensation

Applications:

CLASSIC^™ 812 Specifications

Applications:

Flow, Level, Interface & Temperature

Process Connections:

Flanged

Insertion 'U' Lengths:

Custom Lengths:
Available in 1/2" or 1 cm increments Min. 1.2"- Max. 120" (3.0 - 305 cm)

Wetted Materials:

316/316L Stainless Steel standard
Titanium Gr. 2, Hastelloy® C-276, Monel® 400, Inconel® 600, Alloy 20, Nickel 200

Enclosure Material:

Copper-free Aluminum (does not exceed 0.4% copper)
Powder Coated Polyester TGIC (polyestertriglycidyl isocyanurate)
NEMA 4X / Type 4 / IP55
1" FNPT Conduit Connection
Buna O-ring on Cover

Temperature Range – Continuous Service:

Sensors:
-45°C to +200°C (-50°F to +392°F)
Electronics:
-55°C to +65°C (-67°F to +149°F)

Note: For temperatures above +65°C (+149°F) electronics must be remotely mounted.
Storage:
-55°C to +75°C (-67°F to +167°F)

Operating Pressure - Sensor:
Flanged Style:

Maximum Working Pressure: per flange rating

Switch / Transmitter Switch Point Range

Water-based Liquids:
0.01 to 3.0 ft./sec. (0.003 to 0.9 meters/sec.)
Hydrocarbon-based Liquids:
0.01 to 5.0 ft./sec. (0.003 to 1.5 meters/sec.)
Gases:
0.25 to 254 sfps (0.076 to 77 smps) Standard conditions: 21°C (70°F) at 14.7 psi (1 atm)

Display Panel

Display Panel Indicators:

Relay 1

On steady when Relay 1 is energized

Relay 2

On steady when Relay 2 is energized

Fault

Indicates a self-test error or fault condition

Set Point 1

On steady when viewing Set Point 1

Set Point 2

On steady when viewing Set Point 2

Run Mode

Flashing when switch is operating

Bypass

Flashing when the Start-up Bypass Timer is active

Thermal Signal

Displays Thermal Signal

The Thermal Signal increases as:

Flow

The flow rate increases

Level

The sensor is submerged

Interface

The sensor is submerged by the second liquid of greater thermal conductivity

Accuracy:

Flow Service:
±1% set point velocity over operating range of ±28°C (±50°F)
Level Service:
±0.25 inches (±0.64 cm)

Response Time:

Approximately 0.5 to 30 seconds

Remote Electronics Option:

Maximum recommended cable length - 200 feet (60 m)
Cable type - 24 AWG minimum - twisted pairs

Heater Power:

Field adjustable to optimize performance

Input Power:

Universal Power standard 12-24 VDC and 115-230 VAC, 50-60 Hz
Consumption: Maximum: 4.8 watts (fully configured)

Outputs:

4-20 mA current loop
Two (2) SPDT sealed relay contacts rated @ 5 amps resistive 230 VAC or 30 VDC Max.; individually adjustable

Start-Up Bypass Timer:

Adjustable for 0 to 100 seconds

Communications:

Modbus via RS-485

RCMS (Remote Control & Monitoring Software) Functions and Features:

Display Panel Lock-Out
Set Points configuration¹
Relay Actuation Delay Timer
- Independently configurable for both On and Off, increasing or decreasing
- Adjustable from 0 - 5,000 seconds
Start-up Bypass Timer¹
- Adjustable from 0 - 100 seconds
Relay Mode Configuration¹
- Energized above or below set point
Relay Temperature Mode Configuration
Heater Power setting¹
Zero and Span settings¹
Analog (4-20 mA) output configuration¹
View and Print Graphing (Trend) function
Configuring settings; write to device, save to file and print
Fault Event Log

Note:¹ Also configurable from Display Panel

Diagnostics:

Primary watchdog circuit monitors microprocessor parameter anomalies
Secondary watchdog circuit monitors microprocessor health
Heater monitored for out-of-range conditions
Fault Mode de-energizes relay(s) and halts power to the heater

Agency Approvals:

CSA - ANSI/UL
Class I, Div. 1, Groups B, C and D; Ex d IIB + H2; AEx d IIB+H2 (Class I, Zone 1, Group IIB + H2,) T3; Enclosure Type 4 / IP55
Single Seal Approval
Per ANSI/ISA 12.27.01-2003
CRN
Canadian Registration Number
FM
Class I, Div. 1, Groups B, C and D; Class I, Zone 1, AEx d IIB+H2 T2D (Ta=75°C); T3 (Ta=65°C); Enclosure Type 4 / IP55