PE202
Low Flow Magmeter Instructions
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TABLE OF CONTENTS
PE202 INSTRUCTIONS
General Information General Information....................................................................................................................................................Page 3 Features ...........................................................................................................................................................................Page 3 Specifications.................................................................................................................................................................Page 4 Dimensions.....................................................................................................................................................................Page 5 Pressure Drop Curve....................................................................................................................................................Page 5
Installation Positioning......................................................................................................................................................................Page 6 Mounting.........................................................................................................................................................................Page 6 Piping................................................................................................................................................................................Page 6 Power Supply..................................................................................................................................................................Page 6 Grounding.......................................................................................................................................................................Page 6
Connections General Connection Information............................................................................................................................Page 7 Pulse Output Only with FT520.................................................................................................................................Page 7 4-20 mA Device and FT430/440 with Single Power Supply.........................................................................Page 7 Dual Power Supply with Loop Isolation...............................................................................................................Page 7
Operation General Operation Information..............................................................................................................................Back
Troubleshooting Problem............................................................................................................................................................................Back Probably Causes............................................................................................................................................................Back Things to Try...................................................................................................................................................................Back
Seametrics • 253.872.0284
Page 2
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GENERAL INFORMATION
PE202 INSTRUCTIONS
The PE202 magmeter is designed for low-flow chemical injection or difficult-to-meter applications with pulsating metering pumps in 3/4” to 1/4” pipe/tube. The housing is made of sturdy splashproof HDPE plastic.
The PE meter is compact enough to fit most pump/injection systems. With zero straight pipe required after an elbow, it can be easily mounted in tight spaces. The mounting bracket adds stability.
With no moving parts, the PE202 can handle fluids containing particulate matter without clogging or jamming, keeping maintenance at a minimum. With no metallic parts (100% PVDF body and PVDF carbon fiber-filled electrodes), the meter is corrosion-resistant and compatible with a wide range of chemicals (consult factory for chemicals and concentrations). Accuracy is maintained with conductive fluids (>20 microSiemens) of varying viscosities and densities.
The PE meter has an optoisolated current sinking pulse output that can be connected to the Seametrics FT430/440 rate/total display or FT520 batch processor, as well as an optoisolated 4-20 mA current loop for analog devices. Outputs and power are provided through a cable with 8-pin female circular connector.
FEATURES
8-pin circular bulkhead connector, 20 foot (6 meter) cable provided Internals made of chemical and corrosion-resistant PVDF Sturdy HDPE housing ½” male NPT fittings standard
Threaded male or female NPT adapters can be purchased separately (available in PVDF and PP) (Female NPT available in 1/2” only)
Mounting bracket
Seametrics • 253.872.0284
Page 3
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GENERAL INFORMATION
PE202 INSTRUCTIONS
Specifications* Pipe Size
3/4”, 1/2”, 3/8”, 1/4” **
Fittings
1/2” NPT fittings standard in 3/4” or 3/8” flowbody. NPT threaded adapters available for above pipe sizes.
Materials
Temperature
Body
PVDF
Electrodes
PVDF carbon fiber filled
Ground
PVDF carbon fiber filled
Housing
HDPE with 25% glass
Adapters (NPT)
Polypropylene or PVDF
Ambient
0˚ to 130˚ F (-18˚ to 54˚ C)
Fluid
32˚ to 200˚ F (0˚ to 93˚ C)
Pressure Flow Range Accuracy
150 psi -075
20 GPM max. (0.2 GPM cutoff)
-038
3 GPM max. (0.03 GPM cutoff)
-075
±1% plus ±0.005 GPM of reading across rated range
-038
±1% plus ±0.002 GPM of reading across rated range
Output Signal
Optoisolated current sinking or current sourcing pulse output: 30 Vdc, 5 mA max Optoisolated 4-20 mA current loop: 7 Vdc plus load voltage drop min; 50 Vdc max -075
500 pulses/liter (1892 pulses/gallon)
-038
1000 pulses/liter (3785 pulses/gallon)
Power
10–15 Vdc, 150 mA (linear power supply recommended)
Conductivity
>20 microSiemens
Empty Pipe Detection
Hardware/software, conductivity-based
Environmental
NEMA 4X standard; IP66 splashproof standard
* Specifications subject to change • Please consult our website for current data (seametrics.com). ** Requires adaptors NOTE: Consult factory for applications flowing sodium hypochlorite, sodium chlorite, sodium chlorate. For applications with the listed chemicals, the following conditions apply: • Max concentration 15% / Max temperature 100˚ F • Flow is greater than 20% of max for accurate reading
Seametrics • 253.872.0284
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seametrics.com
GENERAL INFORMATION 8
PE202 INSTRUCTIONS 5
6
7
4
2
3
1
Dimensions 7.2” (18.3 cm) (with adapters as shown) 7.2" (WITH ADAPTERS AS SHOWN) D
4.2” (10.7 4.2"cm)
4.2”4.2" (10.7 cm) (meter without adapters) (METER WITHOUT ADAPTERS)
D
2.1" cm) 2.1” (5.3
Meter ID -038 -038 0.19” .19 -075 0.50” .50 -075
C
C
3.5” 3.5" (8.9 cm) 2.0” 2.0" 8
(5.0 cm)
6
7
5
4
2
3
Mounting Bracket
B
B
7.2”7.2" (18.3 cm)ADAPTERS (with adapters as shown) (WITH AS SHOWN) D
4.2"
(METER WITHOUT ADAPTERS) 4.2”4.2" (10.7 cm) (meter without adapters)
2.1"
NAME
TOLERANCES:
A
ANGULAR: .X .XX .XXX .XXXX
C
4
5
COMMON PARTS, PE202-038
MFG. ENG.
A
Q.A. PROPRIETARY AND CONFIDENTIAL
DO NOT SCALE DRAWING
6
7
TITLE:
ELEC. ENG.
.5
.03 .01 .005 .001
BREAK SHARP EDGES
8
19026 72nd Avenue South Kent, Wa 98032 USA (800) 975-8153
DATE
UNLESS OTHERWISE SPECIFIED DRAWN DIMENSIONS ARE IN INCHES MECH. ENG.
THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF SEAMETRICS, INC. ANY REPRODUCTION IN PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF SEAMETRICS, INC IS PROHIBITED.
SIZE DWG. NO.
REV
BCP PE202-038A SHEET 1 OF 1
2
3
3.5” 3.5" (8.9 cm)
1
2.0" 2.0”
(5.0 cm)
B
Pressure Drop Curve
-038 NAME
DATE
UNLESS OTHERWISE SPECIFIED DRAWN DIMENSIONS ARE IN INCHES MECH. ENG. TOLERANCES:
A
ANGULAR: .X .XX .XXX .XXXX
.03 .01 .005 .001
Q.A. PROPRIETARY AND CONFIDENTIAL
DO NOT SCALE DRAWING
6
7
5
4
THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF SEAMETRICS, INC. ANY REPRODUCTION IN PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF SEAMETRICS, INC IS PROHIBITED.
3
-075
3
PE202-075 with 3/4” adapters. PE202-038 with 3/8” adapters. Actual curve dependant on pipe size/fittings
Seametrics • 253.872.0284
Page 5
COM
MFG. ENG.
BREAK SHARP EDGES
8
TITLE:
ELEC. ENG.
.5
seametrics.com
2
SIZE DW
BCP
INSTALLATION
PE202 INSTRUCTIONS Piping
The PE202 can be mounted vertically or horizontally. It is important to choose a position that will ensure full pipe. (Under certain conditions of empty or partially-full pipe the meter may give a pulse out when there is no flow.) With a zero straight pipe requirement after an elbow, the PE meter can be installed in tight spaces.
Metal pipe, metal tube, or plastic tubing can be used with the meter. The standard NPT fittings can be used with or without NPT adapters on 3/4” or 3/8” pipe. If used, apply Teflon tape onto the NPT fittings. NPT adapters should be hand tightened onto the fittings. Thoroughly clean the pipe threads and nose and apply Teflon tape to adapter threads. Hold adapters with a wrench while tightening the pipe to prevent damage to the meter.
FLOW
Positioning
FLOW
Power Supply
FLOW
A 12 Vdc linear, regulated power supply with an output current of at least 0.25A is recommended. If a switching power supply must be used, consult Seametrics for approved manufacturer’s model numbers.
Grounding Mounting It is highly recommended to use the mounting bracket provided. The mounting bracket uses two #8 screws on a 1.5” center.
In addition, it is necessary for proper operation to ground the unit to a good quality earth ground. Assure negative power supply is grounded to earth and to the entire electrical/mechanical system. If metal piping is used, jumper inlet and outlet pipes together and connect to ground for best results in metering accuracy. The cable shield drain wire should be left unconnected.
The PE202 may be supported by its piping connections IF the piping is rigid. The meter and pipe must be perfectly aligned with no flexion at the fittings to prevent leakage or damage to the meter.
Seametrics • 253.872.0284
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CONNECTIONS
PE202 INSTRUCTIONS
Power and signal connections are provided through the 8-pin male bulkhead connector on the meter housing (20 ft (6 m) cable provided). See the Pin Assignment and Connections diagrams.
5 4
Pin #
Function
Color
1
Pulse (-)
White
2
Ground
Brown
3
Pulse (+)
Green
4
4-20 (+)
Yellow
5
Not used
Grey
6
Not used
Pink
7
4-20 (-)
Blue
8
Power (+)
Red
6
3
7
8 1
2
Cable Plug Contact Arrangement
Pulse Output Only with FT520
12–15 Vdc
Brown
7
+
G
PE202
SEN 2
4
May be external or internal to the FT430/440
2 White 1 3 Green 8 Red
White
Power
Blue
_
SEN 1
_
_ 4-20 mA device
+
+ 12
Green
Pin 3
4-20 mA loop
Yellow
PE202
Pin 1
FT520
Brown
+
Pin 8 Red Pin 2
Important: 4-20mA device input resistance must not exceed 250 Ω
_
12 Vdc power
_
+
4-20 mA Device and FT430/440 with Single Power Supply
FT430/440
_ S + Sensor Input
Dual Power Supply with Loop Isolation
+
Blue
PE202
Seametrics • 253.872.0284
Yellow
May be external or internal to the FT430/440
2 White 1 3 Green 8 Red
7 4
Power
+
_
24 Vdc +
Brown
_
4-20 mA device
_
4-20 mA loop
Page 7
FT430/440
_ S +
_
12–15 Vdc +
Sensor Input May be external or internal to the FT430/440
seametrics.com
OPERATION AND TROUBLESHOOTING
PE202 INSTRUCTIONS
OPERATION The meter will output one pulse when powered up. The newly-installed meter takes from a few seconds to a minute for the signal to stabilize at startup, especially if it has been dry. In normal operation, keep the meter filled with fluid and powered on to prevent this delay. When the meter is mounted properly, an empty pipe detection feature will normally detect absence of liquid in the pipe and register zero flow.
The 4-20 mA signal outputs 4 mA at zero flow and 20 mA at 20 gallons/minute flow or 3 gallons per minute, depending on model. The pulse signal is a 50% duty cycle pulse set at: PE202-075: 500 pulses/liter (1892 pulses/gallon) PE202-038: 1,000 pulses/liter (3785 pulses/gallon)
TROUBLESHOOTING Problem
Probable Causes
Things to try…
No output
Reversed flow direction
Reverse flow connections
Empty pipe
Check piping conditions
Flow rate below minimum
Select a different flow meter
Loose or incorrect wiring
Check electrical connections
Fluid conductivity too low
Select a different flow meter
Electrical noise
Relocate meter or reduce noise
Fluid conductivity too low
Select a different flow meter
Empty pipe
Check piping conditions
Electrical noise
Relocate meter or reduce noise
Flow rate incorrect
Seametrics • 19026 72nd Avenue South • Kent, Washington 98032 • USA (P) 253.872.0284 • (F) 253.872.0285 • 1.800.975.8153 • seametrics.com
LT-14229r2.0 20160912 9/12/16