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

watch 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.

http://ezeta.com/index.php?option=com_k2 A) BODY SIZE
pipe size at the meter inlet. Select from Standard Flow Ranges and Sizes

source link 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)

buy lamisil 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