ValuMass™ 400 Inline Thermal Mass Flow Meter

Series 400 ValuMass™ flow meters offer a lower cost option for many flow applications with the high value associated with all of EPI’s flow measurement instrumentation.

AC power or remote display use additional enclosures. See drawings.

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Below is our standard Integral configuration with one enclosure.

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Below is our AC powered configuration with our Integral enclosure and additional enclosure for AC power.

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Below is our remote enclosure configuration which includes two enclosures.

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Below is our remote enclosure with additional enclosure for AC power. DC power does not require the 3rd enclosure.

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Series 400 ValuMass Flowmeters

Low Cost / High Value

Our ValuMass™  Series 400 offer another lower cost option for many flow applications with the high value associated with all of EPI’s flow measurement instrumentation.

ValuMass™ flowmeters include a robust feature set: 0 – 5, 10 VDC, 4 – 20mA, RS485 Modbus RTU and optional 0 – 1 kHz outputs (proportional to the gas mass flow rate); an RS232C port; 16-bit linearization technology for flow rate accuracy; a fully programmable relay; and rugged construction of 316/316L stainless steel wetted parts. An optional 2-line, 16-character backlit LCD displays the flow rate and the elapsed total readouts.

ValuMass™ inline and insertion flowmeters accommodate virtually all installation requirements. The Series 400 inline style flow­meters are available for line sizes from ¼” to 2”. The 3 ½” long flow sections have MNPT ends as standard for easy mounting in the process line. Other end fittings are available. ValuMass™ flowmeters accept 24VDC, 115VAC or 230VAC input power as specified at the time of purchase.

CE Mark

Accuracy, including linearity (Ref.: 21°C)
±(1% of Reading + 0.5% of Full Scale + GTC)

± 0.2% of Full Scale

Linear Signal Output
Software Controlled 0 – 5 or 0 – 10VDC (Flow and Temperature)
4 – 20 mA (Flow and Temperature),
RS485 Modbus RTU (Flow Rate/Total, Temperature)
Optional 0 – 1 kHz  (proportional to flow for total/counter)

Sensor response time
1 second to 63% of final value

Turn down ratio
100:1 @ 15 SFPM (.076 NMPS) Minimum Reading

Electronics PCB temperature range
-40° to 158°F (-40° to +70°C)

Gas temperature range
-40°–392°F (-40°–200°C)

Pressure Rating Maximum:
Insertion Flowmeters
500 PSIG (Stainless Steel ferrule)
25 PSIG (Teflon™ ferrule), 250 PSIG with Locking collar & safety cable.

Input Power Requirement
24 VDC @ 250mA
115 VAC 50/60 Hz 100mA optional
230 VAC 50/60 Hz 50mA optional

Transmitter Power Requirements
5 Watts or less

Relay Output Rating
1 Amp @ 30VDC (33W) (2 Relays, 1 if Freq. Out needed)

RS-232C, RS485 Modbus RTU

Optional 2-lines, 16 characters per line, backlit LCD
(No Keypad)

Wetted Materials
316 & 316L Stainless Steel

Standard Temperature & Pressure (STP)
70°F & 29.92″ Hg (Air = 0.075 Lbs. / FT3)

NIST Traceable Calibration

Enclosure Rating
NEMA 4X (IP66)

NOTE: Specifications subject to change without notice.