Warnings and cautions
Low pressure gauges can very easily be over pressured if not careful.
Please take caution when applying pressures.
Do not exceed the safety pressure limit of 1000 psi (70bar).
This pump is not designed to be used in explosive or corrosive
environments.
Do not switch between pressure and vacuum mode under pressure.
Over tightening connectors may cause damage.
Store the pump in dry and non-corrosive environments.
Additel is not liable for any safety problems or damages caused bymisuse or incorrect operation.
All moisture and contaminants should be cleaned out of the liquid
isolator before creating a vacuum. This is accomplished by venting
the pump when at high pressure.
For the least risk in contamination of the reference gauge, the DUT
should be installed to the pressure port which is closest to the ventvalve.

Specification

ADT914

Handheld Pneumatic Pressure Test Pump
User's Manual[Version number:1409V12]
Please download the latest version from www.additel.com

Pressure range: 95% vacuum to 375 psi ( 25 bar )Temperature: 0~50 ℃
Humidity: < 85%RH
Adjusting fineness: 10 Pa ( 0.1 mbar )Safety pressure: < 1000 psi ( 70 bar )Pressure media: Air
Size: Height: 5.12'' ( 130 mm );Base: 9.45'' ( 240 mm ) x 4.72'' ( 120 mm )Weight: 3.3 lb ( 1.5 kg )Configuration & Air routine
2

1

3

4

1 - Quick connector

Air routine

2 - Vent valve3（clockwise to close/ counterclockwise to open）

3 - Isolation valve（isolates the calibration volumn from pressurizing system）

4 - Hand pump

72

5 - Fine adjust handle（clockwise to increase pressure）

4

6 - Security bolt pin（use it to ensure safety）

7 65

7 - Pressure/vacuum (P/V) selector

5（Postive pressure: pull it out; Vacuum: push it in）

Troubleshooting
ProblemSolution

Cause

Hand pump will not generate pressure The isolation valve is not open.

Open the isolation valve.

A. Vent valve is not closed.

Close the vent valve.

It is difficult to increase pressure B. The O-ring seal is loose or damaged.

Hard to use the fine adjust

It is difficult to turn the quick connectors

Replace the O-ring seal.

C. P/V selector is in the wrong position.

Pressure: pull the P/V selector out; Vacuum: push the P/V selector in.

A. The isolation valve is not closed.

Close the isolation valve.

B. The gauges are not tightened.

Tighten the reference gauge or the gauge under test.

C. The O-ring seal is damaged.

Replace the O-ring seal.

D. The thread surface is not smooth.

Use Teflon tape on the thread and turn it in tight.

E. The connector is mismatched to the gauge pressure port.

Use the correct adapter.

F. Dust or contaminants are blocking the pressure flow

Repeat pressurizing the pump several times and then suddenly vent which will push any contaminants out.

A. Too much force was previously applied.

Secure the quick connection with less force.

B. The threads have no lubrication.

Apply lubrication to the threads.

O-Rings for pressure connector

P/N

Size

Connector

1611300004

4X1.5

M10X1, 1/8BSP, 1/8NPT

1611300220

6.5X3

M20X1.5, 1/2BSP, 1/2NPT

1611300024

6X2

M14X1.5, 1/4BSP, 1/4NPT, 3/8BSP

Basic Operation
Connection

A

DIGITAL PRESSURE CALIBRATOR

UnitsA0255075100SW
SWVmACOMVmACOM

24V

24V

Pressure Gaugekpressure switch

dial gauge

Vent
Zeroing shouldbe operated
under thiscondition only.

B

pressure transmitter

Pre-pressure

Increasing pressureand fine adjustment

CUnitsUnitsAAA
0255075

D

DIGITAL PRESSURE CALIBRATORDIGITAL PRESSURE CALIBRATORDIGITAL PRESSURE CALIBRATOR

Units

flexible hose

7550250Pressure Gauge

100

Pressure Gauge

100

7550250100⑤ push down to

Pressure Gauge

open

pre-pressurize todesired value or untilpressurization stops① close, do not use too much force④ close, do not use too much force③ openit to the mid② set
position of its travel

opento higher② Pressurizepressure by turning
the handle andmake fineadjustments①
push the security bolt pin inDecreasing pressure

EVacuum pressures

FRepeat Vacuum pressure

DIGITAL PRESSURE CALIBRATORDIGITAL PRESSURE CALIBRATORDIGITAL PRESSURE CALIBRATOR

Units
Units

A0.06

A
0255075

Pressure Gauge

1000255075② fine adjust

pull out ②

Units

0.04

A

Vacuum Gauge

100(0～6）MPa

it slowly to get the desired① openvalue, and close!

G080.02- 0.1

00

pull up to achieve the⑤ desired value

2550750.060.04

Vacuum Gauge

100080.02- 0.10up to achieve② pulldesired value

it must be open when
④ close（butselect the pressure/vacuum）① open① open③
push in to select the vacuum position

Decreasing vacuum pressures

HDIGITAL PRESSURE CALIBRATOR

Units

A0.060.04

Vacuum Gauge
0255075

100080.02- 0.10Remark:it slowly to get the desired② openvalue, and close!
① close③ fine adjust

A: Additel has made a concerted effort to provide complete and current
information for the proper use of the equipment. The productspecifications and other information contained this manual are subject
to change without notice.
B: Above pictures are just for reference.

Additel Corporation, USA
www.additel.com