Series 7000 Inline Thermal Mass Flow Switch

Inline flow switches are available in sizes from 1/4″ pipe through 4″ pipe and are provided with threaded male NPT ends as the standard mounting style. Optional end mounting styles may be specified.

Description

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Series 7000 Flow Switch

The Inline style thermal mass flow switch assembly includes the flow sensing element, temperature sensing element, bridge amplifier/signal output board, transmitter enclo­sure, and flow section. The flow section is typically specified to match the user’s flow conduit and is plumbed directly in the flow line. This design has the sensing elements mounted directly in the flow section for exposure to the process flow.

Inline flow switches are available in sizes from 1/4″ pipe through 4″ pipe and are provided with threaded male NPT ends as the standard mounting style. Optional end mounting styles may be specified, such as tube ends, tube end fittings, butt weld ends, flanged end configurations, etc. as required. Pipe sizes in excess of 4″ require insertion style thermal mass flow switches.

All of EPI’s flow switches have two single-pole, double-throw relays for Hi/Hi, Lo/Lo and Hi/Lo capability. The contact closure is 5 amps @ 24 VDC and 115 VAC. Two LEDs are provided for verification that the Hi or Lo alarm has been triggered. The standard configuration has 316 Stainless Steel wetted parts (Hastelloy & Monel are also available) for a rugged, cleanable instrument designed for use in applications where corrosion, abrasion, high pressure or rough handling may be expected

Approvals:
No Agency Certifications

Signal output                                                              
Relay contact, high & low,
6 Amp @ 24 Volts DC or 250 Volts AC (Class “A”   Insulation)

Trip point accuracy                                                      
+/‑ 1.0% of Set Point 

Repeatability                                                               
+/‑ 0.5% of Range

Sensor response time (Metal)                                       
1 second

Signal response time                                                   
Set to 1 second

Turn down ratio                                                          
100:1 minimum

Electronics temperature range                                     
0‑50°C (32‑122°F)

Gas temperature range                                               
0‑200°C (32‑392°F)

Gas temperature effect                                                
.01% /°C for gas

Pressure rating maximum:                                                    
500 PSI 

Power requirements                                                    
User supplied 24 VDC, @ 250mA Max.
120 VAC 50/60 Hz (optional)

Flow switch enclosure                                                  
NEMA 4, Class 1, Div 1 Groups B, C and D

Wetted materials                                                         
316SS, ceramic, glass, epoxy

NIST traceable calibration                                           
Optional for Gas

Calibration Standard (Gas)                                          
70 °F & 29.92″ Hg
(Air = .075 lb./cubic foot)

NOTE: Specifications subject to change without notice. 

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