Additel ADT 681 Specifications

Additel 681
Digital Pressure Gauges

Pressure ranges to 60,000 psi (4,200 bar)

0.02%, 0.05%, 0.1%, 0.2% FS or 0.1%RD accuracy

% pressure indication with fan-shaped graph scale
for visual reference

Fully temperature compensated accuracy

Panel mount gauges are available

Pressure / Process Calibration Equipment

01

Intrinsically safe version (681IS)

Data logging option

IP67 rated (681IS)

OVERVIEW

With advanced microprocessor technology and state-of-the-art silicon pressure sensors, the 681 series digital
pressure gauges provide an accurate, reliable, and economic solution for a wide range of pressure applications.
They are loaded with functionality and remarkably easy to use. To reach the best performance, every silicon
pressure sensor in our gauges is specially aged, tested and screened before assembly. At Additel, fully temperature
compensated accuracy means every sensor is pressure tested at several environmental temperatures from

-10°C to 50°C. With this test data individual coefcients are generated and stored in the gauge characterizing its

performance over the full temperature compensated range. And now the ADT681IS comes with an IP67 rating
meaning it is dust resistant and water proof, submersible in 1 meter of water.

Designed to fit your need

Additel pressure gauges give you the widest variety of sensor choices on the market. Whether you require low
inches of water measurement or very high pressure measurement, we have a gauge that will meet your need. We
offer sensors which are ±1 inH
Do your applications require you to measure both positive and vacuum pressure? Our compound gauges do not

compromise accuracy and provides you with the same high accuracy specication on both positive and vacuum

pressures. We offer a wide variety up to 300 psi (20 bar). If you need a higher range, just contact us and we can

likely customize one to meet your need. We also offer absolute pressure sensors to 5K psi (350 bar) and a full

range of differential pressure sensors from ±1 inH

pressure gauge to use in hazardous areas? Our certied (ATEX, CSA US & IECEx) intrinsically safe models (681IS)
are designed for pressure measurement in hazardous areas.

If you need to panel mount our sensors, we offer the option (see ordering information) for a back-mounted pressure

port and gauge housing designed to t in a panel. And most recently, we've added the option to do stand-alone data

logging with the 681. Now you can record more than 21,000 records internal to the 681 series. Each record includes
date, time, pressure and temperature readings. Download the logged data with our free Additel/Land software or
you can purchase our Additel/Log II for real-time logging and data analysis. The 681 series digital pressure gauges
are unmatched in performance and reliability. Best of all, they are very affordable.

FEATURES

Pressure ranges to 60,000 psi (4,200 bar)

0.02% full scale accuracy (681-02)

0.05% full scale accuracy (681-05)

0.1% full scale accuracy (681-10)

0.2% full scale accuracy (681-20)

0.1% reading scale accuracy (681-RD)

IP67 rated: Submersible in 1 meter of water(681IS)

Fully temperature compensated accuracy from
14°F to 122°F (-10°C to 50°C)

Up to eleven selectable pressure units

Large, easy to read display with 5-digit resolution

Phone: [phone] Fax: [phone] Email: [e-mail]

New Ranges to 60,000 psi (4,200 bar)

Gauge pressure Differential pressure

O (±2.5 mbar) to 60K psi (4,200 bar) and everything in between.

2

O (±2.5 mbar) to ±300 inH2O (±700 mbar). Are you looking for a

2

Backlit display

% pressure indication with fan-shaped graph scale for
visual reference

Display ash warning when pressure over 120% of FS

Bottom mount or panel mount

ATEX certied intrinsically safe (Model 681IS)

ISO17025 accredited calibration with data(included)

9V battery power or AC adapter (optional)

Data logging to 21,843 records (includes date, time,
pressure and temperature)

Corporate Headquarters

2900 Saturn St #B
Brea, CA 92821, USA

Salt Lake City Office

1364 West State Rd. Suite 101
Pleasant Grove, UT 84062, USA

SPECIFICATIONS

Model ADT681 ADT681IS

Description

Intrinsic Safety

&

European Compliance

681(IS)-02 : 0.02% of full scale

Accuracy

(For detailed accuracy, please

see pressure range table)

Pressure / Process Calibration Equipment

Gauge Types

Fan-shaped Graph Scale

Display

Pressure Units

Environmental

Pressure Port

Power

Enclosure

Compliance

Data Logging

(Available on with data logging

option ADT681-...-DL)

Communication

Warranty

[1] FS = -14.5 psi
[2] Applicable ADT681-RD-CPX

681(IS)-05 : 0.05% of full scale

681(IS)-10 : 0.1% of full scale

681(IS)-20 : 0.2% of full scale

681(IS)-RD: 0% to 20% of Range: 0.02% of full scale 20% to 110% of Range: 0.1% of reading

Vacuum: 0.25% of full scale

Gauge pressure, compound pressure, absolute pressure, differential pressure, barometric pressure

Similar to analog dials, including pressure swing, % indication with fan-shaped graph scale for visual reference, low/high

alarm.

Description: 5 full digit FSTN LCD

Display rate: 3 readings per second (Default setting).

Adjustable from 10 readings per second to 1 reading every ten seconds

Numeral display height: 16.5mm (0.65")

Pa, kPa, MPa, psi, bar, mbar, kgf/cm2, inH2O@4°C mmH2O@4°C, inHg@0°C, mmHg@0°C

Compensated Temperature: 14°F to 122°F (-10°C to 50°C)

Operating Temperature: 14°F to 122°F (-10°C to 50°C)

Storage Temperature: -4°F to 158°F (-20°C to 70°C)

Humidity: <95%

≤15,000 psi: 1/4NPT male, 1/2NPT male, 1/4BSP male, 1/2BSP male, M20×1.5 male

>15,000 psi: 1/4HP female or 1/4HP male

*1/4HP female: Autoclave F-250-C, 9/16" - 18 UNF-2B

*1/4HP male: Autoclave M-250-C, 9/16" - 18 UNF-2A

Differential Pressure: 0.236 inch (Ø6 mm) test hose

Other connections available per request

Battery: One 9V alkaline battery (included)

Battery life:

1. High power mode: 320 hours

2. Low power mode: 300 hours (10 readings/s), 600 hours (3 reading/s), or 4000 hours (1 reading/10s)

Power auto-off: 60 minutes power auto-off. Auto-off may be disable

External power: 110/220V external power adapter (optional)

Case material: Aluminum alloy

Wetted parts: 316L SS

Dimension: Ø110mm X 35mm depth X 176mm height (panel mount gauge: Ø140mm X 86mm depth)

Weight: 0.6kg

Protection Level: IP67(available for 681IS GP15-60K)

Vibration: 5g (20-2000 Hz)

Shock Resistance: 100g/11ms

Data storage: 21,843 records (each record includes date, time, pressure and temperature)

Rate: user-selectable from 1 to 99,999 second intervals

RS232 *(Do not use the RS-232 connector in a hazardous atmosphere)

1 year

Digital Pressure Gauge Intrinsically Safe Digital Pressure Gauge

CE marked

CE marked

[1][2]

ATEX certied intrinsically safe

II 1G EX ia IIC T4 Ga

TUR 16.0023X

02

Phone: [phone] Fax: [phone] Email: [e-mail]

Corporate Headquarters

2900 Saturn St #B
Brea, CA 92821, USA

Salt Lake City Office

1364 West State Rd. Suite 101
Pleasant Grove, UT 84062, USA