The Series 6512000 Portable Pneumatic Calibrator is a pressure-vacuum test stand wholly contained
Design and Construction The Series 6512000 Portable Pneumatic Calibrator is a pressure-vacuum test stand wholly contained in a carrying case. The front panel accommodates the precision pressure gauge, all pressure connections, two air-regulator controls, and a selector valve. With the selector valve, three different test pressures can be applied individually to the gauge. A fourth selector setting vents the gauge to atmosphere.
The precision pressure gauge has a Ni-Span C, capsule-type pressure element which gives excellent temperature stability and speed of response. An almost frictionless mechanical linkage amplifies capsule movement and transmits it to the pointer. Although highly sensitive and accurate, the mechanism is built to withstand the handling normally associated with on-site calibration of pneumatic instrumentation.
A filter on the air supply keeps oil and moisture out. Two regulators apply known pressures to the devices under test. The connection block has 1¼8 inch female-pipe threaded connections. Small gauges can be threaded directly into the block; or as with larger instruments, connected by flexible tubing.
The scale contains two sets of calibrations: -100 to 0 to 850 inches of water and -3.6 to 0 to 30.6 psi.
Clear, Accurate Readout Sharply defined graduations, a 45-inch scale length over two pointer revolutions, and a knife edge pointer to facilitate precise readouts. All scale calibrations are individually plotted and hand marked to produce a dial custom fitted to the pressure element and mechanism of that gauge.
Engineered for Performance The gauge housing is heavy cast aluminum with a tempered glass dial cover. A built-in pressure-relief valve has a dumping capacity which protects the case against overpressure to 10 times the maximum pressure rating. A separate pressure-relief valve protects the capsule mechanism. The gauge is mounted inside the carrying case on rubber-padded shock mounts. The carrying case is constructed of strong but lightweight molded ABS that flexes to absorb shock from impact.
The Portable Pneumatic Calibrator weighs only 20 lbs. and is only slightly larger than an attache case. The easy portability, simple set-up and the versatile capabilities of this unit extends its usefulness for service in the field. Its portability saves the time and expense of shop calibration.
An Extra Measure of Accuracy All Portable Pneumatic Calibrators are subjected to rigorous and extensive testing. Each has to perform at better than the rated accuracy (0.1% of full scale) to be accepted. It’s accurate enough to double as a shop standard.
Calibration Traceable to NIST Calibration is with primary standards which are directly traceable to the National Institute of Standards and Technology.
Applications
Gauge Pressure: Test pressure is applied to the capsule through the appropriate P connection; the case is open to atmosphere through S
Differential Pressure: High test pressure is applied to the capsule through the appropriate P connection. Low test pressure is applied to the case through S
Absolute Pressure: Test pressure is applied to the capsule through the appropriate P connection and the case is continuously subjected to full vacuum through S
Vacuum: The capsule is open to atmosphere through connection P; the case is connected to test vacuum at S
Positive and Negative Pressures: Test pressure is applied to the capsule through the appropriate P connection and the case is open to atmosphere through S
Calibrator Applications
Calibration of Pressure Transmitters
Calibration of Gauges, Indicators & Recorders
Calibration of Differential Pressure Transmitters
Calibration of Ratio Relay
Calibration of Typical Stacked Diaphragn pneumatic controller
SPECIFICATIONS
Range and Calibration
On the dial, the outer scale reads -100 to 0 to 850 inches of water with graduations every 1.0 inch; the inner scale reads -3.6 to 0 to 30.6 psi with graduations every 0.05 psi.
Accuracy
0.1% full scale
Repeatability
0.03% of full scale
Sensitivity
0.01% of full scale
Hysteresis
0.1% of full scale
Readability
0.02% of full scale
Temperature effect
Maximum is 0.1% of full scale per 10 C change from 25 C
Scale Length
45 inches through 2 pointer revolutions
Overpressure Protection
A pressure relief valve protects the mechanism (capsule); pressure up to 90 psi will not damage the mechanism or affect accuracy. A built-in relief valve and a flow restricter protect the case from pressures up to 10 times the case rating of 35 psig. This valve is an emergency-protective device only
Maximum Case Leak Rate
Will not exceed 1.03 x 10 7 std cc/sec. or 0.018 psi/hr
Inlet manifold to pressure gauge: aluminum; brass polyethylene; copper; steel; glass wool; carbon; Buna N
Gauge Case
Anodized aluminum with tempered glass dial cover
Carrying Case
ABS plastic 171/2 in. x 12 in. x 71/2 in.
Accessories
6 adapters for 1/8" pipe thread to 1/4" plastic tubing, 20 ft. of 1/4" OD plastic tubing, instruction book, sheet with summary of important instructions
Modifications
Other ranges (to 0-100 psi) and other units of calibration including metric (SI) units, are available at extra cost
Shipping Weight
50 lbs. (20 lbs. net)
Note: Calibrator is for use with non-corrosive gases. It should not be used with liquids.
CAT NO.
MODEL
DEscRIPTION
AVAIL
PRICE
WT555600
65-120 (6512000)
PNEUMATIC PRESSURE CALIBRATOR
Yes
6,792,660
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