Model PT-1 Pressure Tester
APPLICATION
• For calibration, test and measurement
applications requiring very high accuracy secondary transfer standards
FEATURES
• Simultaneously display the output of
two pressure sensors, two RTD’s or
one of each
• 12 standard user selectable engineering units and one custom value.
• Dedicated front panel buttons to set
zero, check max/min values, adjust
measurement damping, select either or
both ports for standard display, additive or differential display, print the display and configure the RS232 output.
All front panel features are accessible
via the RS232 port for remote configuration or data acquisition
The PT indicator is an extremely versatile pressure measurement and test
instrument. Each PT indicator provides
the ability to select any of twelve factory
programmed engineering units, monitor
and display minimum and maximum pressure values, program damping, tare out
displayed measurement values and communicate over the standard RS232 interface. In addition to a broad variety of
pressure ranges and types, the PT indicator can be supplied with temperature
input modules.
These modules provide compatibility
with platinum RTD Pt100 or Pt1000
probes. The modules accommodate 2, 3
and 4 wire configurations. All these capabilities are accessible through easy-to-follow keypad functions as well as over the
RS232 interface.
Optional features such as the addition of
a second sensor assembly, a backlit display or a built-in rechargeable battery
pack make the PT indicator the ideal
measurement tool for most major pressure measurement applications.

BULLETIN APT-1

All specifications are subject to change without notice.
All sales subject to standard terms and conditions.
© Ashcroft Inc. 2013 04/2013

PRODUCT SPECIFICATIONS
Accuracy:

±0.1% of span
±0.025% of span
±0.05% of span
Optional Special Calibration:
Eliminates temperature error from 20° to 120°F.
Calibration: (Traceable to N.I.S.T.)
Recalibration: Complete recalibration can be
accomplished over instrument RS232 interface.
Zero and span can be accomplished via front
panel keypad.
Resolution: ±0.002% of span (max)
Repeatability: (typical)
±0.01% of span (all psi ranges)
±0.01% of span, (ranges of 1˝ through 200˝ H2O)
±0.02% of span, (ranges below 1˝ H2O)
Pressure Types: gauge (sealed gauge over 300 psi),
absolute, compound, differential and vacuum (as
noted in range chart)
Temperature Effect (zero & span): ±0.004% per °F
from a reference temperature of 70 ±3 °F
Operating Temperature Range:
32-120° F (0 to +49° C)
Temperature Compensation Range:
20-120° F (–7 to +49° C)
Storage Temperature:
–4 to +158° F (–20 to +70° C)
Warm up:
5 minutes to rated accuracy
30 minutes to complete stability
Media (compatability):
PPM1 Sensor Type: Clean, dry, non-conductive,
non-corrosive gas
PPM2 Sensor Type: Any medium compatible
with 316SS
Overpressure:
Inches of H2O ranges
50 psi positive, 15 psi negative psi ranges
200% for ranges of 5 through 1000 psi
150% for ranges of 1500 psi and above
The front panel keypad provides access to the
following standard features:
• Push button zero adjust
• Engineering unit select (12 standard)
• Push button tare function
• Push button max/min memory recall
• Pressure/temperature port select (left, right, both)
• Port addition, subtraction (for DP calculation)
• Selectable dampening of input pressure
• Serial output – port configuration
• Display hold
• Push button print
Display: Liquid crystal
Display Size: 2 line, 0.38 inch height per line, 16
alpha or numeric characters/line (max)
Display Update: 100 ms
Pressure Connection: 1⁄8 NPT internal
Dimensions: 7.72˝ x 6˝ x 2.95˝ (l x w x h)
Panel Cutout: 5.4˝ x 2.68˝ (w x h)
Weight: Will vary based on sensor type and number
of sensors installed. Total weight less than 4 lbs
with 2 sensors and battery option.
Case Material: High Impact ABS, black
Power Requirements:
Standard: ac adapter provided for operation off
standard 110 Vdc, 60 Hz supply

Ashcroft Inc., 250 East Main Street, Stratford, CT 06614 USA
Tel: 203-378-8281 • Fax: 203-385-0408
email: info@ashcroft.com • www.ashcroft .com