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140 Series Differential Pressure Gauge

Mid-West Model 140 is suited for use on dissimilar fluids, wet gas or fluids with a high concentration of solids. Accuracy ±2 % full-scale ascending.

Consult the attached pdf for full specifications. Contact Teltherm for technical assistance.
Features include:
Total separation of high and low pressures by a convoluted elastomer diaphragm.
Sensor magnetically coupled to the indicating pointer and optional switches.
Sensor housing available in aluminum, brass, or 316 stainless steel.
Ranges from 0-50" H20 thru 0-100 psid (160 mbar ~ 7 bar)
Working pressures to 3000 psig (200 bar) depending on housing material.
Available with square root dials for flow measurement.
2½ " or 4½ " Plastic Dial Assemblies
3½ " or 4½ " Anodized Aluminum Dial Assemblies
Over-range protection to full rated working pressures.
Hermetically sealed reed switches (1 or 2)
Available in either NEMA 4X or NEMA 7 (GSA Listed) enclosures with external set point adjustment access.
Panel or pipe mounting capabilities.

Accuracy ±3-2-3 % Full Scale (0-15 psid thru 100 psid) ascending.
(ASME B40.1 Grade B)
±5% Full Scale 0-50" H20 to 0-400" H20 ascending. (ASME B40.1 Grade D)

The Model 140 "Delta Meter" is available with either one or two hermetically sealed reed switches for either high alarm, low alarm or both.
Switches can be set to activate/deactivate on rising or falling pressure.
CSA Listed Explosion Proof enclosures with SPOT or SPST switches rated Class I, Groups C & 0, Class II, Groups E, F, & G are available.


If you are not sure what you are after or are in a hurry, call us today and talk to an expert on industrial instruments.

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+64 9 633 0040
5 / 343 Church Street | Onehunga
Auckland 1061, New Zealand