Time Electronics 7090 Pneumatic Calibration Hand Pump - Manual (Page 2)

2
7090 User Manual 2
1.
Introduction
The 7090 pneumatic calibration hand pump is designed for ease of use to provide a source
of both pressure and vacuum for checking the calibration of gauges, pressure switches,
transmitters and recorders. The large comfortable handles with grips moulded into the
design make it easy to control the pump whilst pumping up to pressure. The dual o-rings on
all pistons ensure leak free operation.
Specification
Output Range: -0.95 to 40 bar ( -13.78 to +600 psi).
Media: Air and compatible gases only.
Gauge Port: ¼” BSP with ¼” NPT adaptor fitted.
Process (UUT) Port: 1/8” BSP with 1/8” NPT adaptor and plug fitted.
Materials: Stainless steel fittings, anodized aluminium housing,
plastic/rubber handles, nitrile o-rings.
Weight: 0.91kg.
• 7090 hand pump
Contents
• 1 meter of 6/4mm hose
• Selection of 5 fittings
• Carry case
• Manual
2.
Operational Notes
1 Ensure all units under test are disconnected from process pressures before connecting
the pump.
2 Do not exceed the maximum pressure rating; this is 41 bar (600 psi).
3 The 7090 is supplied with ¼” and 1/8” BSP ports. For use with NPT fittings the supplied
adaptors must be fitted.
4 Use only bonded washers to seal the male adaptors/fittings. Screw down hand tight, and
then fully tighten with a spanner. Do not over-tighten, this could strip thread. PTFE tape
or thread sealant may be used with female adaptors.
5 The 7090 uses a Schrader valve to vent. This means that the vent valve is fully open or
closed several turns from the end of travel. Over tightening does not increase the
effectiveness of the seal.
6 Do not use with liquids.
All Time Electronics' instruments are subject to continuous development and improvement and in
consequence may incorporate minor detail changes from the information contained herein.