Dwyer DTFF - Manual

Series DTFF Variable-Area Flowmeter for Low Flow Rates
Specifications - Installation and Operating Instructions
Bulletin F-DTFF
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
SPECIFICATIONS
Service: Compatible gases & liquids & oils.
Wetted Materials:
Body: 316 SS;
Spring: 302 SS;
Range spring: 302 SS;
Magnet: PTFE-coated;
Orifice piston: Acetal;
Diaphragm: Fluoroelastomer.
Temperature Limit: -22 to 200°F (-30 to 93°C).
Pressure Limit: 3000 psig (200 bar).
Accuracy: Liquid/oil calibration: ±2% FS; Air calibration: ±5% FS.
Repeatability: ±1% FS.
Size: Diameter dial face 2.5˝ (63.5 mm).
Process Connections: 1/4˝ female NPT.
Weight: 4 lb (1.81 kg).
The Series DTFF Fixed-Orifice Flowmeter for Low Flow Rates
measures water, oil, or air flow rates with great accuracy at an
affordable price. Rugged stainless steel construction ensures great
compatibility and is an excellent choice for high line pressure
applications, with a maximum pressure of 3000 psig (200 bar). This is all
without sacrificing the sensitivity required for low flow measurements.
With a wide variety of flow ranges available, the Series DTFF can be
used with many different applications all at an economical price.
Calibration
All Series DTFF Fixed-Orifice Flowmeter for Low Flow Rates are
calibrated at the factory for mounting in the horizontal position and
should be installed that way for maximum accuracy.
The unit will normally retain its accuracy tolerance for the useful life of
the device. If you want to check the accuracy, do so only with
instruments of certified accuracy. Do not attempt to check accuracy with
other flowmeters piped in series. Even minor variations in piping and
back pressure can cause significant differences in indication. If in doubt,
return the flowmeter to the factory for a calibration check.
1-1/2
[38.10]
3/4
[19.05]
11/16
[17.53]
2
[50.80]
1-1/2
[38.10]
1/4˝ NPT
INLET & OUTLET
1-31/64
[37.59]
1-7/8
[47.75] 2-11/32
[59.44]
1/4˝ NPT PROCESS CONNECTION
Ø2-59/64
[74.17]
1
[25.40]
Calibration
Water
Water
Water
Water
Water
Water
Water
Water
Water
Oil
Oil
Oil
Oil
Oil
Oil
Oil
Oil
Oil
Air
Model
DTFF-1S-2W
DTFF-1S-4W
DTFF-1S-5W
DTFF-1S-8W
DTFF-1S-10W
DTFF-1S-15W
DTFF-1S-20W
DTFF-1S-25W
DTFF-1S-40W
DTFF-1S-2O
DTFF-1S-4O
DTFF-1S-5O
DTFF-1S-8O
DTFF-1S-10O
DTFF-1S-15O
DTFF-1S-20O
DTFF-1S-25O
DTFF-1S-40O
DTFF-1S-5A
Range
0 to 2 GPH
0 to 4 GPH
0 to 5 GPH
0 to 8 GPH
0 to 10 GPH
0 to 15 GPH
0 to 20 GPH
0 to 25 GPH
0 to 40 GPH
0 to 2 GPH
0 to 4 GPH
0 to 5 GPH
0 to 8 GPH
0 to 10 GPH
0 to 15 GPH
0 to 20 GPH
0 to 25 GPH
0 to 40 GPH
1.5 to 5 SCFM
F-DTFF_SSS-1000 4/4/12 9:44 AM Page 1