RCM Flow Switches

RCM Flow Switches

RCM Flow Switches
Shown with 2S2 & LED options

RCM flow switches provide an economical solutions for equipment protection and automation. Our general purpose reed switches make or break contacts by detecting the position of a magnet permanently attached to the bellow. Our reed switches can also be ordered for use in hazardous location (Option IS), when fitted with LED’s (Option LED) it provides viewing at a glance when flow rate goes below or above the set point and makes field calibration easy.

Standard Specifications: (General Purpose)

Accuracy: ± 3% F.S.
Repeatability: ± 1% F.S.
Pressure Max.: 400 psig (28.1 kg/cm2)
Pressure Min.: 10 psig (0.67 kg/cm2)
Temp. Max.: 212ºF (100ºC)
Temp. Min.: -30ºF (-34ºC)
Enclosure Rating: NEMA 4X / IP66

Electrical Rating:

Ambient Temp.: 120ºF (50ºC)
Setability: ± 5% F.S.
Hysteresis: ± 13% F.S.
Contact Rating: 10 Watts, 175 Vdc max. 125 Vac max.
Current: 350 mA max. switching
Hazardous Location Specifications: (Option IS & LED)

Contact Rating:

Vmax = 28V, Imax = 110mA, Pmax = 1.2W, Ci = 0uF, Li = 0uH
CSA / NRTLc: AEx ia IIC: Class I, Division I, Groups A, B, C & D Class II, Division I, Groups E, F & G
KEMA: Ex ia IIC: Zone 0, II 1G T4 0°C ≤ Ta ≤ 50°C ATEX EC Type Examination
Protect from freezing liquid

Hazardous Location Specifications: (Option IS & LED)

Contact Rating:

Vmax = 28V, Imax = 110mA, Pmax = 1.2W, Ci = 0uF, Li = 0uH

CSA / NRTLc: AEx ia IIC: Class I, Division I, Groups A, B, C & D
Class II, Division I, Groups E, F & G

KEMA: Ex ia IIC: Zone 0, II 1G T4 0°C ≤ Ta ≤ 50°C ATEX EC Type Examination

source link Selecting a Flow Switch

Select a switch with a maximum flow range greater than the required switch point. Best performance at minimum pressure drop occurs at approximately 50% of maximum flow range.

Select a) body size, b) end connections, c) material, d) maximum flow rate, e) options (if required) and f) number of switches.

A) BODY SIZE
pipe size at the meter inlet. Select from Standard Flow Ranges and Sizes

http://sullivanbrospainting.com/commercial-services-2 B) SERIES (end connections)
1 – threaded units provided with FNPT connections standard. FBSP parallel threads available on request for bronze meters.
2 – wafer units mount between any standard 150 or 300 class flanges (or international equivalent).

C) MATERIAL
1 = Bronze 3 = Stainless steel (316)

keppra 100mg/ml uk D) FLOW RATE
(maximum) – Select from Standard Flow Ranges and Sizes, page 2. Prefix full scale with “M” for metric units.

E) OPTIONS
Select from table of Options. Note: For gas service, select option I and specify gas being ———measured, inlet temperature and pressure

F) NUMBER OF SWITCHES
1S2 – One single pole double throw switch 2S2 – Two single pole double throw switches

G) IS – Intrinsic Safe Approval (Included w / 1S2 or 2S2 Only).

H) LED – Light Emitting Diode (optional no charge).

 

SpecificationsStandardOptional
Maximum Pressure400 psig, (28.1 kg/cm2)
Maximum Temperature212u00b0F (100u00b0C)350u00b0F (177u00b0C)
Minimum Temperature-30u00b0F (-34u00b0C)nProtect from freezing liquids-80u00b0F (-62u00b0C)
Pressure Drop5 psig at max flown1.2 psig at 50% of max flow
HousingPolycarbonateAluminum
Pressure CellAluminum, hard anodized
BodyBronze316SS or Monel
BellowsBronze316SS, Monel or Inconel
Gear MovementBronze316SS
Reed Switches 
Setabilityu00b15% FS.
Repeatabilityu00b11% FS.
Hysteresis7 to 13% FS.
Contact Rating3 watts
Voltage100 vdc u2013 max.
Current250mA max. switching 250mA max. switching 1.0 Amp max. carry