Process Calibrators
Calibration
73
1. Remove two-wire test lead from the 717 Calibrator and carefully attach the pressure
fitting of the deadweight tester to the pressure jack on the 717 Calibrator.
Note
The use of TEFLON tape at the pressure fittings strengthens the seal.
2. The lower display shows rAnGE. This is an indication to choose the correct model of
the 717 Calibrator. Choose the correct range. The appropriate range for the 717 is as
follows:
717 1G (1)
717 30G (30)
717 100G (100)
717 300G (300)
717 500G (500)
717 1000G (1000)
717 1500G (1500)
717 3000G (3000)
717 5000G (5000)
The upper display shows 30, which is the default pressure range. Pressing
(≤ version
2.0) changes the sensor range to 100 PSI, pressing
changes it back to 30 PSI. For a ≥
version 3.0 push to uprange, hold to down range. Match the displayed range to the
measurement range of the 717.
3. After selecting the proper range, push
on the 717 Calibrator.
4. Vent the system to ambient air to ensure 0.00 PSI.
5. The lower display indicates C 0 PSI and the upper display indicates the current
reading. When the unit is vented (step 5) the upper display will read 0.00 ±
approximately 10 % of full scale. When
is pressed, the lower display indicates
the next pressure to apply. Apply the requested pressure that shows on the lower
display and when the upper reading is stable, push
. Repeat this until CHEC
appears on the display.
6. The CHEC mode allows for a quick check of the calibration constants that have just
been stored. Changes to the applied pressure reflect on the display. Push
to
continue. The unit will then reset power.
7. The 717 Calibrator is now out of the CAL mode and into the normal mode of
operation. Carefully vent all pressure, push to turn the calibrator off, and
disconnect all pressure fittings.
717 Calibration (V4.0 and Later)
mA Measure
1. Hold down and on the 717. Push and release .
2. The display shows CAL xxx, while and are pushed. xxx is a number that
shows you the number of times the 717 has gone through the calibration adjustment.
When and are released, PASS is shown.
3. A password is necessary to get in to calibration mode. The password is 817. Record
the most significant digit first. The password is shown below PASS. Use to
increase the number shown, to decrease it. When the necessary digit is shown,
push to go to the next digit, or the password check. If the password entry is
correct, the 717 goes to the CAL mode. If the password is incorrect, BAD PASS
shows on the display and the 717 changes back to normal operation mode.
4. In the CAL mode the upper display shows an uncalibrated indication. This indication
is approximately ±10 % of full scale of the applied reading. When is pushed, the
calibration value is calculated relative to this indication. The lower display shows the
function and point that you are to calibrate.
1.888.610.7664 sales@GlobalTestSupply.com
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