Sierra For over thirty years Hoffer Flow Controls has been designing and manufacturing quality turbine flowmeters and related process instrumentation. Their initial experience was in the field of cryogenic flow measurement. The key feature in the high precision turbine flowmeter that differentiates them from other turbine flowmeters is the hybrid ceramic ball bearings.
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Click Photo for Spec Sheet Description Accuracy Flow Range Liquid Max. Pressures/Temperatures Features
HO Liquid
HO liquid

Turbine flowmeter with 316 stainless steel body, providing a pulse output, for liquid service, 1/4" to 12". Ceramic bearings.

0.24-17 up to 3028-56775 litres/min. Overrange 150% intermittent.

Any non abrasive, chemical compatible clean liquid.

0.5% reading - linearity. 0.25% reading - typical. 0.1% repeatability (0.05% typical).

Pressures up to 500 bar for higher see HO Autoclave and WingNut, temperature from -270 to +230C +450C optional.

Simple construction with only one moving part and pulse output. MS, male NPT threaded, ANSI flange connections standard, wafer fit available.

HO Gas
HO Gas

Turbine flowmeter with 316 stainless steel body, providing a pulse output, for gas service, 1/4" to 12". Ceramic bearings.

0.15-3.5 up to 200-12000 ACF/min. Overrange 150% intermittent. 4 different blade angles.

Any non abrasive, chemical compatible clean gas.

1% reading - linearity density dependent. 0.25% repeatability (over specific range).

Pressures up to 500 bar, temperature from -270 to +177C +204C optional.

Simple construction with only one moving part and pulse output. MS, male NPT threaded, ANSI flange connections standard, wafer fit available.

HO API for liquid
HO API

Turbine flowmeter with 316 stainless steel body, providing a pulse output, for liquid service, 3/4" to 12". Ceramic bearings.

13.6 to 56775 litres/min. Overrange 150% intermittent.

Any non abrasive, chemical compatible clean liquid. Accuracy quoted for sg 1 and 1cSt.

0.25% reading - linearity. 0.5% reading - extended max flow range. 0.15% reading - premium linearity over reduced range. 0.02% repeatability

Pressures up to 500 bar, temperature from -270 to +230C +450C optional.

Simple construction with only one moving part and pulse output. MS, male NPT threaded, ANSI flange connections standard, wafer fit available.

HO Sanitary
HO Sanitary

Turbine flowmeter with 316 stainless steel body, providing a pulse output, for liquid service, 1/4" to 3". Ceramic bearings. 3-A Sanitary standard 28-03.

1.3 to 2460 litres/min. Overrange 150% intermittent.

Any non abrasive, chemical compatible clean liquid.

0.5% or better reading - linearity. 0.1% or better repeatability

Pressures up to 300psig up to 37C, sensors available for temperature from -270 to +230C +450C optional.

Simple construction with only one moving part and pulse output. Ladish Tr-Clover Tri-Clamp standard.

HO Autoclave
HO Autoclave

Turbine flowmeter with 316 stainless steel body, providing a pulse output, for liquid service, 1/4" to 3/4". Ceramic bearings. Autoclave male thread.

0.24 to 132 litres/min. Overrange 150% intermittent.

Any non abrasive, chemical compatible clean liquid.

0.5% reading - linearity. 0.25% reading - typical. 0.1% repeatability (0.05% typical).

Pressures 10,000, 15,000 & 20,000 psi, temperature from -270 to +230C +450C optional.

Simple construction with only one moving part and pulse output. 3/4" & 1" Autoclave male thread standard.

Wing Nut Liquid
Wing Nut Liquid

Wing Nut High Pressure flowmeter with 4130 stainless steel body, providing a pulse output, for liquid service. Ceramic bearings. Savage or FMC Wing Nut fitting

15 to 4000 litres/min. Overrange 150% intermittent. Other ranges available

Any non abrasive, chemical compatible clean liquid.

0.5% reading - linearity. 0.25% reading - typical. 0.1% repeatability.

Pressures 15,000 psi, temperature from -270 to +230C.

Simple construction with only one moving part and pulse output. 1 to 3" size, for Water, Liquid Carbon Dioxide and Cement/Sand Slurry.

Wing Nut Gas
Wing Nut Gas

Wing Nut High Pressure flowmeter with 4130 stainless steel body, providing a pulse output, for gas service. Ceramic bearings. Savage or FMC Wing Nut fitting.

Consult factory

Any non abrasive, chemical compatible clean gas.

1% reading - linearity. 0.25% repeatability.

Pressures 15,000 psi, temperature from -270 to +177C.

Simple construction with only one moving part and pulse output. 1 to 3" size, typically for oil well fracturing with Nitrogen gas.