Thank you for purchasing a GaugeCalHP™ Pressure Comparator from Crystal Engineering. The GaugeCalHP is a self-contained, precision hydraulic pressure
comparator intended for the calibration of pressure gauges rated up to 15
or oil.
Using this comparator for calibration is much faster than deadweight testers and most automated pressure controllers. The GaugeCalHP is so quick and easy
to use, it is ideal for calibrating those low cost gauges that are often overlooked for ISO9000 compliance.
In fact, you can calibrate most gauges, transmitters, pressure safety valves, sensors, and switches in less than ten minutes (5 to 10 test points, increasing and
decreasing pressure) using the methods described in this manual.
The GaugeCalHP hydraulic comparator may be ordered as part of a Pump System, complete with a Crystal Pressure Indicator. GaugeCalHP Pump Systems
include the most commonly used pressure ttings, seals, etc. All packaged in a carrying case with custom insert.
Spend a few minutes to read this manual and learn how you can get the most benet from your GaugeCalHP.
Note:
We recommend using one of the following indicators with the GaugeCalHP.
000 psi / 1000 bar / 100 MPa. You may ll the GaugeCalHP with your choice of water
Overview 1
nVision Reference Recorder 30 Series Pressure CalibratorXP2i Digital Pressure Gauge
MP F15K-1/4 FPTCPF Female to 1/4" NPT Female Fitting
*
MPF-1/4BSPF
MPF-1/8MPT
MPF-CA P
60 R1201/4” Bonded Seals
5102Fine Adjust (installed)
1351Test Leads; Red & Black, including clips
5249
60I10 4Pack Tape (1 roll)
5101Rolling Waterproof Carrying Case
*
These ttings are rated to 10 000 psi/100 bar.
**
The MPF-1/8MPT ttings and 1351 Test Leads are included only with Pump Systems for the 30 Series Calibrator.
CPF Female to 1/4" BSP Female Fitting
*
1/8” MPT Fitting (for 30 Serie s Calibrator)
*
CPF Female Cap Fitting
Protective Vinyl Cap
**
(GaugeCalHP)
**
(
2 )
(
2 )
(
5 )
(
4 )
Hydraulic Fluid
GaugeCalHP comparators are only available delivered empty. You will still need to specify what uid type you are going to use (for example; GOX for Oil or GWX for Water).
Ordering a Pump System
Any GaugeCalHP Pump System may be ordered with or without a reference indicator. The table below provides an explanation of the Pump System ordering
scheme when ordering a system without an indicator. For details on ordering the Pump Systems with an indicator, see the indicator datasheet.
The GaugeCalHP includes rubber feet that stabilize the unit up to 5000 psi. At pressures above 5000 psi, the force required to rotate the handle may cause the
base of the comparator to lift. One of two methods may be used to mount the GaugeCalHP to a bench or table.
X
Using the Mounting Brackets
1 Loosen the mounting bracket screws.
2
Rotate the brackets, then slide them over the front of your table (max thickness of 1.75”).
Tighten the mounting bracket screws.
3
Rotate the mounting brackets… then slide them over the front of your table.
Note: To ensure the comparator is mounted securely, grip and compress the brackets to the underside of the table while tightening the mounting screws.
X
Install Onto a Table
Order the optional Table Mount Kit (P/N 5191) to bolt to a table.
1 Loosely tighten (3 turns only) the reference to the connection manifold.
Note:
If the reference will not t because you have a large device under test, turn the pivoting manifold to create extra space.
Shown with a Quick Test Fitting (not included).
2 Bleed the system of remaining air by turning the reservoir knob clockwise until uid drips out of the CPF weep hole on the base of the reference and on the
connection tting.
Operating Instructions 9
Turn the reservoir knob… until uid drips from the CPF weep hole.
We recommend that you exercise the device under test by applying the full scale pressure one or more times.
4
To apply pressure… Turn the handle in a clockwise direction.
To decrease pressure… Turn the handle in a counter-clockwise direction.
5
After decreasing the pressure to zero, recheck the uid level in the reservoir and rezero the reference, if necessary. You will notice that the application of
pressure is non-linear, therefore pressure increases at a more rapid rate at higher pressures.
6 Turn the handle clockwise until the approximate pressure is obtained.
Allow time for the adiabatic eect to stabilize.
7
8
Use the ne adjust knob to obtain the exact pressure.
9 Compare the pressure on the device under test to the pressure displayed on the reference, and record the reading.
Operating Instructions 11
Checking the accuracy of an analog pressure gauge against the display of the reference.
An alternative method eliminates the time required to wait for thermal pressure stability. This method works with the Crystal XP2i and nVision, but not with
the 30 Series.
1
Set the reference to detect peaks and clear any stored peak value.
Slowly increase pressure to the rst major graduation on the device under test (or to the rst calibration point).
2
Increase pressure slowly, so that you don’t overshoot the mark (or point).
The maximum pressure displayed on the reference will be the pressure that was applied—even if actual pressure drops again immediately.
Record the peak reading and continue to the next test point or mark.
3
If you are also checking the gauge for hysteresis, the procedure is the same, except that you start at full scale and set the reference for the peak low. Elimi
nating the time required to wait for thermal equilibrium, signicantly shortens the amount of time it takes to calibrate a gauge.
To automatically collect the readings directly from the reference, use FastCalXP calibration software.
Note:
X
To vent the system
Turn the handle counter-clockwise until it stops.
Vacuum Use
X
To Generate Vacuum
1 Loosen the reference indicator about 3 turns counter-clockwise.
2
Turn the handle clockwise and verify that uid is dripping out of the CPF weep hole into the drip tray. Continue to turn the handle until it stops.
3
Tighten the reference.
4
Rotate the handle counter-clockwise to generate a vacuum.
You can generate up to -12.5 psi.
Be aware that the system will vent during the last inch of travel.
Additional NPT si zes available in non-CPF MP a dapters
MPF-1/8QTF1/8" Quick Test NPT Female
MPF-1/4QTF1/4" Quick Test NPT Female
MPF-1/4FPT1/4" NPT Female
MPF-1/2QTF1/2" Quick Test NPT Female
Additional NPT si zes available in non-CPF MP a dapters
MPF-1/8BSPFG 1/8" Female
MPF-1/4BSPFG 1/4" Female
MPF-3/8BSPFG 3/8" Female
MPF-1/2BSPFG 1/2" Female
MPF-5/16TRMfor Foxboro, Rosem ount, & Yokogawa
MPF-1/4TRMfor Ho neywell
MPF-1/4TBM1/4" Tube Male
MPF-3/8TBM3/8" Tube Male
MPF-1/2TBM1/2" Tube Male
MPF-MPFFemale to Female
MPF-MPFTUT-Union (Female)
MPF-MPFBULKBulkhead (Female to Female)
MPF-CAPCap
MPF-M20QTFM20 x 1.5 Quick Test Female
MPF-M20X1.5FM20 x 1.5 Female
MPF-QCNQuick-Connect Nut
MPF-AN4MAN4 Male
1/4" NPT Male
10
10
10
10
10
10
10
5
10
10
10
10
5
5
5
10
10
10
10
5
10
5
5
Medium Pressure FEMALE to NPT FEMALE
Medium Pressure FEMALE to NPT MALE
Medium Pressure MALE to NPT FEMALE
Medium Pressure MALE to NPT MALE
5
5
5
300 bar/5000 psi
10
700 bar/10 000 psi
15
1000 bar/15000 psi
(Non-CPF MP ttings require wrench tightening.)
45011/8 NPT
47151/4 NPT
45023/8 NPT
4503
47141/4 NPT
44943/8 NPT
44951/2 NPT
44963/4 NPT
44971/8 NPT
44981/4 NPT
44993/8 NPT
45001/2 NPT
46981/4 NPT
44923/8 NPT
44931/2 NPT
1/2 NPT
15
15
15
15
15
15
15
10
15
15
15
15
15
15
15
* These parts are includ ed with the pump. All other pa rts are supplied as p art of a pump system, or m ay be ordered separate ly. All BSP connections requ ire bonded seals.
Problem: Pressure cannot be generated correctly, or set pressure does not remain stable.
X
Solutions:
• Check that all adapters and pressure ttings have been tightened suciently to eliminate leaks.
• Conrm test uid does not contain air (air in the uid can increase adiabatic eects). You may have to adjust the pressure a few times before the
pressure is stable enough for calibration.
• Adiabatic and thermodynamic eects may be aecting the pressure reading. High pressure hydraulic systems are sensitive to temperature and move-
This eect will disappear after a period of time.
ments.
If the pressure is still not stabilizing, the system may be in need of service. Please contact your local distributor for advice.
Note: Always readjust the pressure after 5 to 10 minutes to allow time for settling of above eects.
MAINTENANCE
Users should/must carry out the following cleaning procedures when required:
Standard exterior cleaning
Heavily soiled cleaning
Reservoir
. . . . . . . . . . . . . . . . . . . . . . . . Can be removed for easy cleaning. Turn the GaugeCalHP onto its side and loosen the two screws holding the reservoir in
To clean the clear acrylic reservoir tube use a soft cloth or soap and water only. Never use chemical cleaners.
. . . . . . . Clean using a soft, damp cloth.
. . . . . . . . . . . The instrument may also be cleaned using isopropyl alcohol when heavily soiled.
place. Slide the screws through the hole and quickly remove the reservoir as uid may leak out of the bottom.
Please complete the Return Material Authorization (RMA) form to generate an authorization number and provide return instructions.
WARRANTY
Crystal Engineering Corporation warrants the GaugeCalHP Comparator to be free from defects in material and workmanship under normal use and service for
one (1) year from date of purchase to the original purchaser. It does not apply to batteries or when the product has been misused, altered or damaged by ac-
cident or abnormal conditions of operation.
rystal Engineering will, at our option, repair or replace the defective device free of charge and the device will be returned, transportation prepaid. However, if
C
we determine the failure was caused by misuse, alteration, accident or abnormal condition of operation, you will be billed for the repair.
CRYSTAL ENGINEERING CORPORATION MAKES NO WARRANTY OTHER THAN THE LIMITED WARRANTY STATED ABOVE. ALL WARRANTIES, INCLUDING IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE, ARE LIMITED TO A PERIOD OF ONE (1) YEAR FROM THE DATE OF PURCHASE.
CRYSTAL ENGINEERING SHALL NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT, TORT OR OTHERWISE.
Note:
(USA only) Some states do not allow limitations of implied warranties or the exclusion of incidental or consequential damages, so the above limita-
tions or exclusions may not apply to you. This warranty gives you specic legal rights and you may have other rights which vary from state to state.