Precision Test Gauges

Precision,Test,Gauges The 3D Precision Test Gauges are certified for industrial and laboratory pressure transfer measurement in the U.S. and worldwide.

Incorporating 3D Instruments' well known expertise in test gauge design and application, the Precision Test Gauge provides unsurpassed long term accuracy. The dial face design comes directly from 3D experience with the practical use of high resolution pressure calibration in the laboratory and the field.

Utilizing a highly sensitive Ni-Span C Bourdon tube, the Precision Test Gauges are virtually unaffected by temperature variations. This obsoletes the need for an expensive add-on temperature compensation device. The Bourdon rube material offers a superior spring rate varying only 0.02% from -25 degrees F (-32 degrees C) to + 125 degrees F (+52 degrees C).

With the 3D Precision Test Gauges there is no need for preliminary pressure cycling. All materials used are selected to be corrosion resistant. All gauges are supplied with a bleed port, and Bronze bushings are used ensuring low friction and long term precision in extreme applications involving dust, vibration and temperature variation.

The gauge dial uses 3D instruments well known anti-glare soft green with mirror anti-parallax band, and white outer ring for maximum user resolution. This system has proven practical advantages for technicians and engineers.

All Precision Test Gauges dials are linear and interchangeable in the field for the same pressure range. The advantage of using the Ni-Span C Bourdon tube and the resulting low hysteresis is that the Precision Test Gauges are not individually matched to a non-linear dial. This makes field repair and calibration not only a possibility but a relatively easy task performed with exactness and facility by instrument technicians in real world situations.

3D Instruments, already the major force in mechanical field test gauge pressure instruments, is proud to supply the best available Precision Test Gauge for your high accuracy applications.

Features:

High accuracy 0.1% of span

Repeatability 0.02% of span

Hysteresis 0.1% of span (or less)

Inherent temperature compensation

from: -25 degrees F (-32 degrees C) to +125 degrees F (+52 degrees C)

120% full scale pressure with no calibration shift

200% full scale pressure without damage

Corrosion resistant materials

Linear dials, span micro-adjust and zero reference adjust allow component replacement and simplify recalibration

Easy reading high resolution 3D dial in soft green and white with a mirror band to eliminate parallax error

5 year warranty

Specifications:

Precision Test Gauge Accuracy - 0.1% of span This accuracy statement includes repeatability, linearity and hysteresis, obtained by calibration with pressure standards traceable to N.I.S.T.

Calibration Points - 12 points up scale and 12 down scale

Overpressure - 120% of span without calibration shift 200% of span without damage

Repeatability - 0.02% of span

Hysteresis - .1% span or less

Measure Fluid - gauges are calibrated with air (up to 1,000 psi) or distilled water (up to 10,000 psi). Other fluids compatible with Ni Span C, 300 series stainless steel ad Buna-N may be used. Gauges may be oxygen cleaned.

Needle Movement - 310 degrees

Temperature - 25 degrees F (-32 degrees C) to 125 degrees F (+52 degrees C) operating ambient

Warranty - 5 years

The lowest full scale pressure is 15 psi ( 1bar ), the highest full scale pressure is 10,000 psi (660 bar) or the equivalent in other pressure units. These ranges are available in PSIG, PSIA, INCHES OF MERCURY, and MILLIMETERS OF MERCURY. Other ranges and pressure units are available on request.

Gauge Diameter	Model Number	Standard Fittings (1)	Mounting	Net Weight (lbs.)	Shipping Weight (lbs.)
7	25x19	Bottom	*Stem	4(1.8 kg)	11(5.0 kg)
8.5	25x16	Lower Back	Panel	5(2.2 kg)	12(5.5 kg)
12	25x17	Lower Back	Panel	7(3.2 kg)	14(6.4kg)
16	25x18	Lower Back	Panel	12(5.5 kg)	20(9.0 kg)

Code	Standard Range	Increments	Subdivisions	Gauge Diameter

15	0-15 psi	750	.02	7,8.5,12
0	0	1500	.01	16
21	30 psi	600	.05	7,8.5,12
0	0	1500	.02	16
22	60 psi	600	.10	7,8.5,12
0	0	1200	.05	16
23	100 psi	1000	.1	All
24	150 psi	750	.2	7,8.5,12
0	0	1500	.1	16
25	200 psi	10000	.2	All
26	300 psi	600	.5	7,8.5,12
0	0	1500	.2	16
51	400 psi	800	.5	All
27	500 psi	1000	.5	All
28	600 psi	600	1	7,8.5,12
0	0	1200	.5	16
53	800 psi	800	1	All
29	1000 psi	1000	1	All
31	1500 psi	750	2	7,8.5,12
0	0	1500	1	16
32	2000 psi	1000	2	All
33	3000 psi	600	5	7,8.5,12
0	0	1500	2	16
34	4000 psi	800	5	All
35	5000 psi	1000	5	All
36	6000 psi	600	10	7,8.5,12
0	0	1200	5	16
37	8000 psi	800	10	All
38	10,000 psi	1000	10	All
VACUUM
15 (AAU)	15-0 psi	750	.02	7,8.5,12
0	0	1500	.01	16
15	30-0 in/hg	600	.05	7,8.5,12
0	0	1500	.02	16
15 (AAQ)	800-0 mm/hg	800	1	All

Ordering Information:

3D 1/10% Precision Test Gauges can be ordered by building a part number as follows:

Example:

25	5	1	6	28	E	2	1
Dial Gauge	(5) Pressure (1) Compound (2) Vacuum	0.10% Accuracy Span	Diameter (9) 7" (6) 8.5" (7) 12" (8) 16"	Range Code	1/4" NPTF	Flange Front, Fitting Back (no flange, bottom fitting code "5" is standard for 7" dial size)	Black Case

Resources

Data Sheet

Precision Test Gauges Catalogue

Product Manual