Dwyer Instruments FLOTECT V6 series Installation And Operating Instructions Manual

The Series V6 FLOTECT Flow Switch is an inexpensive, explosion-proof flow
®
switch for use on air, water or other compatible gases and liquids. Three configura-
tions are available - 1. Factory installed in a tee. 2. With a trimmable vane for field
adjustment and installation in a suitable tee. 3. Low flow models with an integral tee
and adjustable valve. All are available with an optional enclosure which is UL and
CSA listed, or Directive 94/9/EC (ATEX) compliant for
II 2 G Ex d IIC T6 Gb
Process Temp≤75°C or IECEx compliant for Ex d IIC T6 Gb Process Temp ≤ 75°C.
INSTALLATION
Unpack and remove any packing material found inside lower housing or tee.
Switch can be installed in any position but the actuation/deactuation flow rates in
the charts are based on horizontal pipe runs and are nominal values. For more pre-
cise settings, units can be factory calibrated to specific flow rates.
V6 Models with Tee are supplied in 1/2˝ - 2˝ NPT sizes. Install in piping with arrow
pointing in direction of flow.
V6 Low Flow Models have 1/2˝ NPT connections and are field adjustable. Install
in piping with arrow pointing in direction of flow. To adjust, loosen the four socket
head cap screws on bottom. The adjustment valve rotates 90° between "O" (open)
and "C" (closed). See flow charts for approximate ranges. Tighten screws once the
required flow rate has been set.
V6 with Field Trimmable Vane. These models enable the installer to choose ap-
proximate actuation/deactuation points by trimming the full size vane at appropriate
letter-designated marks on a removable template. Flows are defined in the following
charts. Note that the charts are based on either brass or cast iron reducing tees or
stainless or forged steel straight tees with bushings where necessary. Install in piping
with arrow pointing in direction of flow.
When bushings are used, they must be back drilled to allow proper clearance for
unrestricted vane travel. Bore the I.D. to 13/16˝ (20 mm) on 1/2˝ x 3/4˝ bushings or
1˝ (25 mm) on larger bushings. The depth of the bore must leave internal threads
9/16˝ (14 mm) high for proper engagement between the lower housing of the switch
and the bushing. Check for proper vane travel and switch operation after installa-
tion.
W.E. ANDERSON DIV., DWYER INSTRUMENTS, INC.
P.O. BOX 358 • MICHIGAN CITY, INDIANA 46361 U.S.A.
Series V6 FLOTECT
Specifications - Installation and Operating Instructions
Flow Switch
®
SPECIFICATIONS
Service: Gases or liquids compatible with wetted materials.
Wetted Materials: Standard V6 Models: Vane: 301 SS; Lower Body: brass or 303
SS; Magnet: ceramic; Other: 301, 302 SS; Tee: brass, iron, forged steel, or 304 SS.
V6 Low Flow Models: Lower Body: brass or 303 SS; Tee: brass or 304 SS; Magnet:
ceramic; O-ring: Buna-N standard, Fluoroelastomer optional; Other: 301, 302 SS.
Temperature Limits: -4 to 220°F (-20 to 105°C) Standard, MT high temperature
option 400°F (205°C) (MT not UL, CSA, ATEX or IECEx) ATEX Compliant AT and
IECEx IEC Option, Ambient Temperature -4 to 167°F (-20 to 75°C) Process Tem-
perature: -4 to 220°F (-20 to 105°C).
Pressure Limit: Brass lower body with no tee models 1000 psig (69 bar), 303 SS
lower body with no tee models 2000 psig (138 bar). Brass tee models 250 psi (17.2
bar), iron tee models 1000 psi (69 bar), forged and stainless steel tee models 2000
psi (138 bar), low flow models 1450 psi (100 bar).
Enclosure Rating: Weatherproof and Explosion-proof. Listed with UL and CSA for
Class I, Groups A, B, C and D; Class II, Groups E, F, and G. (Group A on stainless
steel body models only).
0344 II 2 G Ex d IIC T6 Gb Process Temp≤75°C Alternate Temperature Class
T5 Process Temp≤90°C, 115°C (T4) Process Temp ≤105°C consult factory. EC-type
Certificate No.: KEMA 04ATEX2128.
ATEX Standards: EN 60079-0: 2009; EN 60079-1: 2007.
IECEx Certified: For Ex d IIC T6 Gb Process Temp≤75°C Alternate Temperature
Class T5 Process Temp≤90°C, 115°C (T4) Process Temp≤105°C consult factory.
IECEx Certificate of Conformity: IECEx DEK 11.0039;
IECEx Standards: IEC 60079-0: 2007; IEC 60079-1: 2007;
Switch Type: SPDT snap switch standard, DPDT snap switch optional.
Electrical Rating: UL models: 5A @125/250 VAC. CSA, ATEX and IECEx models:
5A @ 125/250 VAC (V~); 5A res., 3A ind. @ 30 VDC (V ). MV option: .1A @ 125
VAC (V~). MT option: 5A @125/250 VAC (V~). [MT option not UL, CSA, ATEX or
IECEx].
Electrical Connections: UL models: 18 AWG, 18˝ (460 mm) long. ATEX/CSA
/IECEx models: terminal block.
Upper Body: Brass or 303 stainless steel.
Conduit Connections: 3/4˝ male NPT standard, 3/4˝ female NPT on junction box
models.
Process Connection: 1/2˝ male NPT on models without a tee.
Mounting Orientation: Switch can be installed in any position but the actuation/de-
actuation flow rates in the charts are based on horizontal pipe runs and are nominal
values.
Set Point Adjustment: Standard V6 models none. Without tee models vane is trim-
mable. Low flow models are field adjustable in the range shown. See set point
charts on opposite page.
Weight: 2 to 6 lb (.9 to 2.7 kg) depending on construction.
Options not Shown: Custom calibration, bushings, PVC tee, reinforced vane,
DPDT relays.
ELECTRICAL CONNECTIONS
Connect wire leads in accordance with local electrical codes and switch action re-
quired. N.O. contacts will close and N.C. contacts will open when flow increases to
the actuation point. They will return to "normal" condition when flow decreases to
the deactuation point. Black = Common, Blue = Normally Open and Red = Normally
Closed.
For units supplied with both internal ground and external bonding terminals, the
ground screw inside the housing must be used to ground the control. The external
bonding screw is for supplementary bonding when allowed or required by local code.
When external bonding conductor is required, conductor must be wrapped a mini-
mum of 180° about the external bonding screw. See below. Some CSA listed models
are furnished with a separate green ground wire. Such units must be equipped with
a junction box, not supplied but available on special order.
LOCKWASHER
SCREW
CLAMP
FRONT VIEW DETAIL
Phone: 219/879-8000
Fax: 219/872-9057
Bulletin E-22
CONDUCTOR
SIDE VIEW DETAIL
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