GF Signet 2537 User Manual

Signet 2537 Paddlewheel Flowmeter		English
*3-2537.090*
3-2537.090	Rev G 9/12 English
SAFETY INSTRUCTIONS
1.	Depressurize and vent system prior to installation or removal.
2.	Con rm chemical compatibility before use.
3.	Do not exceed maximum temperature/pressure speci cations.
4.	Wear safety goggles or faceshield during installation/service.
5.	Do not alter product construction.
6.	If this equipment is used in a manner not speci ed by the manufacturer, the protection provided
	by the equipment may be impaired.

7.This device is not approved for use or installation in hazardous locations.

Description

The 2537 Paddlewheel Flowmeter Series offer low ow, low power and high resolution with various output options such as a Volumetric Pulse, Pulse Divider, Flow Switch, Digital (S3L), or 4 to 20 mA. This unit can be con gured on-site directly through the built-in user interface.

•The 4 to 20 mA model provides a blind current loop output.

•The Digital (S3L) model provides a Digital (S3L) output for use with the Signet 8900 Multi-Parameter Controller or 9900 Transmitter.

•The Multi model uses a single relay (mechanical or solid state) and has three selectable operating modes:

•Divider Mode scales the paddlewheel frequency down to accommodate low frequency input devices.

•Total Mode outputs one pulse per a set volume of uid.

•Flow Switch Mode uses a single relay for Hi or Lo alarm operation.

A small LCD enables the 2537 to be programmed without any external equipment. During normal operation the display is not visible.

For earlier versions of this sensor, please visit our manual archives at www.gfsignet.com and download the 2537 rev C manual.

SpeciÞcations

General

Wetted Materials

Model SufÞx	Sensor Body	Rotor	Pin	O-ring
-P0, -P1	glasslled PP	PVDF, Black;	Titanium	FPM
		optional ETFE
		w/ or w/o carbon
		ber reinforced
		PTFE sleeve
-T0	PVDF, Natural	PVDF, Natural;	PVDF,	FPM
		optional ETFE	Natural
		w/ or w/o carbon
		ber reinforced
		PTFE sleeve

Case:	PBT, yellow
Inside Cover:	Valox, black
Wiring Ports:	½ in. NPT threads; liquid-tight
	connector accepts cables 7 to
	10 mm OD (0.275 in. to 0.394 in.)
Power Requirements
Multi:
with Dry-Contact Relay:	24 VDC nominal, ±10%, regulated
	30 mA max. current
with Solid-State Relay:	5 to 24 VDC nominal, ±10%, regulated
Digital (S3L):	30 mA max. current
	5.0 VDC min. to 6.5 VDC max.
	30 mA max. current (1.5 mA nominal)
4 to 20 mA:	400 mV max. ripple voltage
	30 mA max. current

Reverse Polarity and Short Circuit Protected: Up to 40 V, 1 hour Over-Voltage Protection: > 40 VDC over 1 hour

Paddlewheel Sensor Performance SpeciÞcations

Pipe Size Range:	DN15 to DN200 (½ in. to 8 in.)
Min. Reynolds Number:	4500
Paddlewheel Frequency:	49 Hz per m/s nominal
	(15 Hz per ft/s nominal)
Operating Range:	0.1 m/s to 6 m/s (0.3 ft/s to 20 ft/s)
Linearity:	±1% of max. range @ 25 °C (77 °F)
Repeatability:	±0.5% of max. range @ 25 °C (77 °F)
Electronics Performance SpeciÞcations
Input Frequency Range:	1 to 1000 Hz
System Response:	100 ms update rate nominal
Environmental Requirements
Enclosure Rating:	NEMA 4X/IP65
Storage Temperature:	-10 to 75 °C (14 to 167 °F)
Ambient Temperature:	0 to 65 °C (32 to 150 °F)
Relative Humidity:	0 to 90% RH, non-condensing
Altitude:	2000 m (6,562 ft)
Pollution Degree:	2
Output SpeciÞcations
Signal Averaging:	Programmable 0 to 100 seconds
Sensitivity Response:	Programmable 0 to 9 scale

Pulse Divider/Total Pulse Output

Pulse Divider Setting: 1.0000 to 99999

Maximum pulse rate: 300 Hz Maximum pulse width: 50 ms

Flow Switch Output
Relay Modes:	Low, High
Time Delay:	0.0 to 6400.0 seconds
Hysteresis:	Adjustable in Engineering Units
Relay SpeciÞcations
Dry Contact SPDT:	5 A @ 30 VDC, 5 A @ 250 VAC
Solid-State Relay:	100 mA @ 40 VDC, 70 mA @ 33 VAC
Digital (S3L) output
Type:	Serial ASCII, TTL level 9600 bps
Maximum Cable Length:	See Digital (S3L) speci cations
Current output (Passive 4 to 20 mA)
Loop Accuracy:	±32 A (@ 25 °C @ 24 VDC)
Loop Resolution:	5 A
Temp. Drift:	±1 A per °C max.
Power Supply Rejection:	±1 uA per V
Maximum Cable Length:	305 m (1,000 ft)
Max Loop Resistance:	600 @ 24 VDC, 1 K @ 32 VDC

Standards & Approvals

•UL

•CE

•Manufactured under ISO 9001 for Quality, ISO 14001 for Environmental Management and OHSAS 18001 for occupational health and safety.

China RoHS (Go to www.gfsignet.com for details)

Declaration of Conformity according to FCC Part 15

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:

(1)This device may not cause harmful interference, and,

(2)This device must accept any interference received, including interference that may cause undesired operation.

Fluid Conditions

Pressure/Temperature Ratings:

Polypropylene Body:

•12.5 bar (180 psi) max. @ 20 °C (68 °F)

•1.7 bar (25 psi) max. @ 85 °C (185 °F) PVDF Body:

•14 bar (200 psi) max @ 20 °C (68 °F)

•1.7 bar (25 psi) max @ 85 °C (185 °F)

Intended Use: This product is intended for use in industrial water treatment and wastewater treatment applications where the chemical content and the uid temperatures are consistent with the speci cations listed herein.

This device is not approved for use or installation in ßammable liquids.

bar psi
14	200
11	160		PVDF
8 120			Polypropylene
6	80
3	40
°F	0	40	80	120	160	200	240
°C	-18	4	27	49	71	93	115

Chemical Compatibility

Georg Fischer Signet products are manufactured in a variety of wetted materials to suit various liquids and chemicals.

All plastic materials including typical piping types (PVC, PVDF, PP and PE) are more or less permeable to contained media, such as water or volatile substances, including some acids. This effect is not related to porosity, but purely a matter of gas diffusion through the plastic.

If the plastic material is compatible with the medium according to the application guidelines, the permeation will not damage the plastic itself. However, if the plastic encloses other sensitive components, as is the case with GF Signet plastic paddlewheel sensors, these may be affected or damaged by the media diffusing through the plastic body and rotor.

PVDF paddlewheel sensors may experience failure when used in hot nitric acid applications. PVDF is known to allow for substantial permeation of nitric acid constituents without being damaged itself. No clear guideline can be given here, since the damaging effect to the sensor is highly dependent on temperature, pressure and concentration.

Utilizing sensors in applications with aggressive substances is possible. On special request GF Signet can provide sensors with a different internal resin encapsulation (potting) that will delay the damaging effect of acids to the sensors.

WARNING

The retaining nuts of paddlewheel sensors are not designed for prolonged contact with aggressive substances. Strong acids, caustic substances and solvents or their vapor may lead to failure of the retaining nut, ejection of the sensor and loss of the process ßuid with possibly serious consequences, such as damage to equipment and serious personal injury. Retaining nuts that may have been in contact with such substances, e.g. due to leakage or spilling, must be replaced.

For all Special Product inquiries or to place an order, please email signet-specialproduct@georgÞscher.com.

2	Signet 2537 Flowmeter

Location of Fitting

Recommended sensor upstream/downstream mounting requirements:

Select a location with suf cient length of straight pipe immediately upstream of the sensor.

Reducer		90° Elbow
15 x I.D.	5 x I.D.	20 x I.D.	5 x I.D.

2 x 90° Elbow

3 dimensions

2 x 90° Elbow

Pump/Valve

25 x I.D.

5 x I.D.

40 x I.D.

5 x I.D.

50 x I.D.

5 x I.D.

Locating the sensor in a trap or where the ow is upward helps to protect the sensor from exposure to air bubbles when the system is in operation.

OK	OK	OK
	+
	+GF

Vertical flow is OK if the pipe remains full at all times.

These con gurations are not recommended because it is dif cult to keep the pipe full.

+GF+

Sensor Mounting Position		0°
• Horizontal pipe runs: Mount sensor in the upright (0°) position for best performance. Mount at a	-45°	+45°
maximum of 45° when air bubbles are present (pipe must be full). Do not mount on the bottom of the
pipe when sediments are present.		Process
		Pipe

•Vertical pipe runs: Mount sensor in any orientation; however, downward ow is not recommended. Upward ow is preferred to ensure full pipe.

Installation: Pipe Þttings

Georg Fischer Signet offers a wide selection of installation ttings that control the position of the paddlewheel in relation to the dimensions of the pipe.

Type		Description
Plastic		0.5 to 2 inch versions (MPVC or CPVC)
tees
		2.5 to 4 inch versions (PVC)
PVC		Available in 10 and 12 inch sizes only
Glue-on		Cut 2-1/2 inch hole in pipe
Saddles		Weld in place using solvent cement
PVC		2 to 4 inch, cut 1-7/16 inch hole in pipe
Saddles		6 to 8 inch, cut 2-1/8 inch hole in pipe
Iron		2 to 4 inch, cut 1-7/16 inch hole in pipe
Strap-on		Over 4 inch, cut 2-1/8 inch hole in pipe
saddles		Special order 14 in. to 36 in.
Metric		For pipes DN65 to 200 mm
Wafer Fitting	d	PP or PVDF

	Type								Description
	Iron, Carbon Steel,								0.5 to 2 in. versions
	316 SS Threaded
	tees								Mounts on threaded pipe ends
	Carbon steel &								2 to 4 inch, cut 1-7/16 inch hole in pipe
	stainless steel
	Weld-on								Over 4 inch, cut 2-1/8 inch hole in pipe
	Weldolets
	Fiberglass								1.5 in. to 2 in. PVDF insert
	tees
			FPT
	Metric								For pipes from DN 15 to 50 mm
	Union
	Fitting								PP or PVDF

Signet 2537 Flowmeter

3

Installation

Plastic sensor installation tips

•Inspect the sensor O-rings for nicks and other damage that may compromise the seal.

•Lubricate O-rings with a non-petroleum based, viscous lubricant (grease) compatible with the system.

•Using an alternating/twisting motion,

lower the sensor into the tting, making sure the conduit ports on the yellow housing are pointing in the direction

of ow.

sensor

tab

Lubricate

• Engage one thread of the sensor cap

cap

O-rings

then turn the sensor until the alignment

notch

tab is seated in the tting notch.

HAND-TIGHTEN THE THREADED NUT ONTO THE INSTALLATION FITTING. DO NOT USE TOOLS! DO NOT USE THREAD SEALANT OR LUBRICANTS ON THE FITTING THREADS OR THE SENSOR CAP.

Dimensions

97 mm

97 mm

(3.82 in.)

(3.82 in.)

130 mm	171 mm
	(6.73 in.)
(5.12 in.)

2537 Paddlewheel Flowmeter				2537 Paddlewheel Flowmeter
for ½ in. to 4 in. pipe				for 5 to 8 in. pipe

Wiring

Electrical connections to this product should be made only by quali ed personnel.

				Power Rating:
To access the wiring terminals:				24VDC	0.03 AMP
				Sensor	PW/OUT
•	Turn yellow cap ¼ turn counterclockwise to remove.			WIRING DIAGRAM		2505.611A3-
				BLK RED SHLD	+
•	Remove the two retaining screws and remove the black		Relay Rating:
	cover.
			Relay	5A @ 30VDC
			Dry-Contact	5A @ 250VAC
• Route all cables through the conduit ports before connecting		N/O	COM N/C
	them to the terminals.
• Wiring terminals are rated for 16 to 22 AWG conductors.
•	The cable must be 7 to 10 mm in diameter (0.275 to
	0.394 in.) to seal properly in the liquid tight connector.
• The conduit ports have ½ inch NPT threads. After routing the
	cables, seal the port with a liquid tight conduit connector
	(3-9000.392-1) or with conduit.
•	For conduit installations:
	• Thread conduit with ½ in. NPT threads directly into the
	conduit port.
	• For conduit with ISO threads, use the black thread adapter		Using the liquid-tight
	included with the connector kit.		connector

•To comply with NEC requirements, do not use any metal conduit in the installation.

Wiring: Digital (S3L) Output

The Digital (S3L) output is compatible with the 3-8900 Multi-Parameter Controller and the 3-9900 Transmitter.

Blk Red Shld	-	+
S1		S2

Using conduit

Blk Red Shld

-

+

T	t	S1	S2
P

Power Rating:

5 - 6.5VDC 0.03 AMP

WIRING DIAGRAM

Sensor PW/OUT

BLK	RED	SHLD	-	+
Blk	Red	Shld

S1

3-2505.613A

Blk

Red Shld

-

+

I/O Module 3-8900.401-X

3-8900.621C

S1

S2

1

Frequency

+5VDC (Black)

2

Freq. Input (Red)

Input

1

GND (Shield)

3

S2

SHLD GND

DATA V+

S3L

S3L (Red)

4

Frequency

+5VDC (Black)

5

Input 2

Freq. Input 2 (Red)

OR

6

Input

GND (White/Shield)

7

2

8

S3L

+5VDC (Black)

9

S3L (Red)

Input

1

GND (White/Shield)

10

11

Connection to

Analog Output 1

+

(if applicable)

-

12

13

9900 Transmitter

Analog Output 2

+

(if applicable)

-

14

Connection to 8900 Controller

4	Signet 2537 Flowmeter

Wiring: 4 to 20 mA Output

The 4 to 20 mA output can be connected to Chart Recorders, PLCs or any device that requires a 4 to 20 mA signal.

The 4 to 20 mA model requires an external power source of 12 to 32 VDC.

T		t
P
				Blk Red	Shld	-	+
	Power Rating:
12 - 32VDC		0.03 AMP		S1			S2
BLK	WIRING DIAGRAM		2505.614A-3
	RED SHLD	+		connections
Sensor		PW/OUT
				Internal sensor

Programmable Logic Controller
Datalogger	+
Chart Recorder
4 to 20 mA Loop monitor		Power Supply
	-	12 to 32 VDC, 0.03 A

Wiring: Flow Switch Output (On-OFF)

•The Flow Switch mode allows a single relay that is programmable as a HIGH setpoint or LOW setpoint.

•The relay may be a dry-contact type or a solid state type.

•The dry contact relay requires an external power source of 24 VDC ± 10%.

•The solid state relay requires an external power source of 5 to 24 VDC.

T	T	t
	t
P	P

Power Rating:

Power Rating:				5 - 24VDC	0.03 AMP
24VDC	0.03 AMP
				WIRING DIAGRAM
Blk RedREDShldSHLD	-	+	2505.611A-3	BLK RED SHLD	2505.612A-3
WIRING DIAGRAM				Sensor	PW/OUT
Sensor	PW/OUT

		BLK	+			-	+
				Blk Red Shld			+
S1				S1			S2
				S2
					3-2505.616A
		Relay Rating:		Solid-State
	Dry-Contact		5A @ 250VAC	Relay
	Relay		5A @ 30VDC	1 2	Relay Rating:
					100mA @ 40VDC
				Load
N/O	COM	N/C			70mA @ 33VAC

Wiring: Pulse Output

•The "Multi" mode allows a single relay that is programmable as a Flow Switch, Volumetric pulse output or as a simple pulse divider output.

•The relay may be a dry-contact type or a solid state type.

•The Dry Contact Relay requires an external power source of 24 VDC ± 10%.

•The Solid State Relay requires an external power source of 5 to 24 VDC.

•Solid State Relay requires a pull-up resistor (10K ohm recommended). Consult your instrument/PLC manual for wiring information.

			Power Rating:					Power Rating:
			24VDC		0.03 AMP			5 - 24VDC	0.03 AMP
			WIRING DIAGRAM			2505.611A-3		WIRING DIAGRAM		+	2505.612A-3
			RED SHLD		PW/OUT			Blk RedRED ShldSHLD	-
			Sensor					Sensor	PW/OUT
		Blk	RedBLK Shld	-	+ +			BLK		+
S1						S2					S2
						S1
		Relay Rating:						3-2505.616A
	Dry-Contact		5A @ 250VAC			Solid-State
							Relay
	Relay		5A @ 30VDC
N/O	COM	N/C				1	2	Relay Rating:
								100mA @ 40VDC
						Load
								70mA @ 33VAC

Dry Contact Relay Wiring

• The wiring is identical for On-OFF and Pulse modes.

Blk Red Shld	-	+
S1			S2
Internal sensor		+ Power Supply
connections
Normally Open		-	24 VDC, 0.03 A
Common
Normally Closed

Solid State Relay Wiring

• The wiring is identical for On-OFF and Pulse modes.

Blk Red Shld	-	+
S1		S2

Load	1	2
		10KΩ
	I/O	Ð	+
		Power Supply
		5 to 24 VDC,
			0.03 A

Signet 2537 Flowmeter

5