The Rate-Master® Flowmeter line of direct reading precision flowmeters incorporates many unique user features at moderate cost. These low cost flowmeters are ideal for general use.

DH3 Digihelic Differential Pressure Controller is a 3 in 1 instrument possessing a digital display gage, control relay switches, a transmitter with current output all packed in the popular Photohelic gage style housing.

3 features allows the reduction of several instruments with one product, saving inventory, installation time and money.

LThe Digihelic controller is the ideal instrument for pressure, velocity and flow applications, achieving a 1% full scale accuracy on ranges down to the extremely low 0.25" w.c. to 2.5" w.c. full scale. Ranges of 5" w.c. and greater maintain 0.5% F.S. accuracy. Bi-directional ranges are also available.

DH3 Digihelic® controller allows the selection of pressure, velocity or volumetric flow operation in several commonly used engineering units. 2 SPDT control relays with adjustable deadbands are provided along with a scalable 4-20 mA process output.
APPLICATIONS

Dust collection bag filters

SCFM flow in ducts

Filter status

Static pressures in ducts or buildings

Damper control

Fan control

SEE Detail for PDF for further specifications.

DH3 Digihelic Differential Pressure Controller is a 3 in 1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output all packed in the popular Photohelic gage style housing.

3 features allows the reduction of several instruments with one product, saving inventory, installation time and money.

LThe Digihelic controller is the ideal instrument for pressure, velocity and flow applications, achieving a 1% full scale accuracy on ranges down to the extremely low 0.25" w.c. to 2.5" w.c. full scale. Ranges of 5" w.c. and greater maintain 0.5% F.S. accuracy. Bi-directional ranges are also available.

DH3 Digihelic controller allows the selection of pressure, velocity or volumetric flow operation in several commonly used engineering units. 2 SPDT control relays with adjustable deadbands are provided along with a scalable 4-20 mA process output. APPLICATIONS

Dust collection bag filters

SCFM flow in ducts

Filter status

Static pressures in ducts or buildings

Damper control

Fan control

Dwyer's Digihelic® Controller just got better with the New Series DHII Differential Pressure Controller. The DHII takes all the fabulous features of the standard Digihelic® Pressure Controller and packages them in a robust NEMA 4 (IP66) housing with Large, Bright LCD. SEE DETAIL FOR FURTHER INFORMATION. The idea instrument for pressure, velocity, and flow applications.

Digital Mass Flow Controller-Provides flow with valve control. Programmable, RS485 Interface, up to 500 psig, ±1% Accuracy. Features an auto tune function to optimize control response for a specific gas under actual process conditions

Gas Mass Flow Meter Flow Range up to 1000 l/min, Pressures up to 500 psi, NIST Traceable. Actual gas flow is displayed in engineering units on a 3-1/2 digit, 90° tiltable LCD readout. Units can be used with Series GFT Flow Totalizer for applications requiring totalization. Series GFM includes a NIST traceable certificate.

Gas Mass Flow Meter Flow Range up to 1000 l/min, Pressures up to 500 psi, NIST Traceable. Actual gas flow is displayed in engineering units on a 3-1/2 digit, 90° tiltable LCD readout. Units can be used with Series GFT Flow Totalizer for applications requiring totalization. Series GFM includes a NIST traceable certificate.

Intrinsically Safe Differential Pressure Transmitter For Hazardous Zone Pressure and Flow Applications

The ISDP Differential Pressure Transmitter provides a 4-20 mA process output, a robust NEMA 4X enclosure, plus a large LCD display that can be programmed to read in pressure, velocity or flow. The ISDP offers simplified programming via a Menu key that enables the user to select: security level; English or Metric engineering units; pressure, velocity or flow operation, K-factor for use with various Pilot tubes and flow sensors, circular or rectangular duct size for volumetric flow operation plus many more. The Series ISDP Differential Pressure Transmitter is powered on its two wire loop with 10-35 VDC via its integral M-12 four pin male connector. The ISDP provides a 0.5% full scale accuracy on ranges from 0.25" w.c. to 100" w.c. as well as bi-directional models up to 10" w.c. These features make the Series ISDP Differential Pressure Transmitter the ideal instrument for monitoring pressures or air flows in hazardous zones having a Class I Div. I Groups A, B, C, D; Class II Div. I Groups E, F, G; Class III Div. I ratings.

The New LFM Series Flowmeters are made of injection molded, heat and chemically resistant polycarbonate bodies and fittings. Series LFM flowmeters have dual scales measuring in both GPM and LPM with 5% accuracy. A textured background on the body enhances scale readability. Standard in-line models come with 1/2" male NPT connections for LFMA, LFMB & LFMC; 3/4" male NPT connections for LFMD; 1" male NPT connections for LFME; and 2" male NPT connections for LFMF. Panel mount installation is available with 90° elbow fittings that include panel lock nuts. Various other fittings are available.

CAUTION: Series LFM Flowmeters are for indoor use only or areas without direct sunlight. Polycarbonate is adversely affected by ultraviolet light.

Dwyer's MMA flowmeter is suitable for both gas and liquid applications. It can be configured by the user with the parts provided to have non-removable top or bottom from mounted metering valves or no valve at all. 2" scales which combined with precision molding, enables highly repeatable readings to be made to within ±4% accuracy. The MMA is practically unbreakable, mounts easily, and is easy to read. Two 5/16" OD mounting-connection tubes permit quick push-on connection of rubber or plastic tubing.