Digital Pressure Test Gauge (ADT685)
Additel

Additel 685 Digital Pressure Gauge

Model ADT685

Color-touchscreen digital pressure gauge with IP67 304 SS housing, built-in barometer (gauge, absolute, and barometric from one unit), optional intrinsically safe 685Ex, ranges to 60,000 psi, and accuracy to 0.01% FS — from $1,865.

From $1,865.00list price

Pick your exact configuration in the ordering table below to add it to your cart.

Same-day response on quotes. ISO/IEC 17025 accredited calibration available.

Overview

The Additel 685 is a digital pressure test gauge for field and laboratory work. A 3.4-inch color capacitive touchscreen with a replaceable tempered-glass protector replaces the traditional button pad, and the IP67 stainless housing is built for wet, dusty, and drop-prone environments. Ranges run from vacuum and low differential through 60,000 psi (4,200 bar). Accuracy options are 0.01% FS, 0.02% FS, 0.05% FS, or 0.1% of reading (0.02% FS from 0–20% of range, then 0.1% RD). An intrinsically safe ADT685Ex (ATEX II 1G Ex ia IIC T4 Ga, CSA) is available for hazardous areas. From $1,865.

Every 685 includes a built-in barometer certified to 55 Pa, so one instrument reads gauge pressure, absolute pressure, or barometric/atmospheric pressure from a menu selection. Gauge, compound, absolute, differential, and dedicated barometric ranges are available. USB Type-C and Bluetooth are standard; optional RS-232, RS-485, and 4–20 mA output (not on 685Ex) plus onboard data logging (10 million records) cover documenting work. The Additel Link mobile app monitors the gauge from a phone or tablet.

Three AA alkaline batteries typically run about 1,500 hours. Every unit ships with an ISO 17025 accredited calibration certificate with data, a rubber boot, three AA batteries, and a USB-C cable. Configure range, accuracy, port, units, data logging, and communications from the ordering table — thousands of combinations, priced from $1,865.

Specifications

Pressure
RangesVacuum / differential through 60,000 psi (4,200 bar)
Accuracy0.01% FS, 0.02% FS, 0.05% FS, or 0.1% RD (0.02% FS from 0–20% of range)
Gauge typesGauge, compound, absolute, differential, and barometric
Built-in barometer55 Pa (every model reads gauge or absolute)
Dedicated barometric60–110 kPa; 55 Pa (BP) or 22 Pa (BPH)
UnitsPa, kPa, MPa, psi, bar, mbar, kgf/cm², inH2O, mmH2O, inHg, mmHg, plus 3 custom
Display
Screen3.4-inch color capacitive touchscreen (5½ digits), replaceable tempered-glass protector
Resolution / rate5½ digits; 3 rdg/s default (10/s to 1/20 s)
Communication
StandardUSB Type-C and Bluetooth (BLE)
OptionalRS-232, RS-485, and 4–20 mA (not on 685Ex)
AppAdditel Link mobile app for remote monitoring
Data logging
Optional DL10 million records; date, time, pressure, and temperature; 0.1–9999.9 s interval
Hazardous area
685ExATEX II 1G Ex ia IIC T4 Ga; CSA; CE
Power
BatteryThree AA alkaline; typically 1,500 hours; optional 5 VDC adapter (not on 685Ex)
Enclosure
Ingress / durabilityIP67; 304 SS case; 5 g vibration; 8 g / 11 ms shock
Size / weight4.65 × 1.77 × 7.01 in (118 × 42 × 178 mm); 1.50 lb (0.68 kg)
Environment
TemperatureCompensated and operating 14 to 122°F (−10 to 50°C)
Compliance
MarksCE, UKCA (685); ATEX / CSA / CE (685Ex)
General
CalibrationISO 17025 accredited calibration with data included
Warranty1 year
Starting priceFrom $1,865

Videos

ADT685 Digital Pressure Gauges — Intro
Additel 685/686/673 — Product details & differences
Additel 685/686/673 — Screen durability
Additel 685 Link

Documents

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Ordering information

14,702 ordering models available - showing 100, use the filter to narrow down.

ModelDescriptionList Price
ADT685-01-CP100-BAR-BDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/4BSP M$4,979.00
ADT685-01-CP100-BAR-B2Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/2BSP M$4,979.00
ADT685-01-CP100-BAR-B2-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/2BSP M, w/ RS232$5,110.00
ADT685-01-CP100-BAR-B-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/4BSP M, w/ RS232$5,110.00
ADT685-01-CP100-BAR-B2-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/2BSP M, w/ Data Logging$5,245.00
ADT685-01-CP100-BAR-B2-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/2BSP M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP100-BAR-B-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/4BSP M, w/ Data Logging$5,245.00
ADT685-01-CP100-BAR-B-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/4BSP M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP100-BAR-MDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, M20X1.5 M$4,979.00
ADT685-01-CP100-BAR-M-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, M20X1.5 M, w/ RS232$5,110.00
ADT685-01-CP100-BAR-M-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, M20X1.5 M, w/ Data Logging$5,245.00
ADT685-01-CP100-BAR-M-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, M20X1.5 M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP100-BAR-NDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/4NPT M$4,979.00
ADT685-01-CP100-BAR-N2Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/2NPT M$4,979.00
ADT685-01-CP100-BAR-N2-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/2NPT M, w/ RS232$5,110.00
ADT685-01-CP100-BAR-N-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/4NPT M, w/ RS232$5,110.00
ADT685-01-CP100-BAR-N2-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/2NPT M, w/ Data Logging$5,245.00
ADT685-01-CP100-BAR-N2-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/2NPT M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP100-BAR-N-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/4NPT M, w/ Data Logging$5,245.00
ADT685-01-CP100-BAR-N-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 7 bar, compound pressure, 1/4NPT M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP100-PSI-BDigital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/4BSP M$4,979.00
ADT685-01-CP100-PSI-B2Digital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/2BSP M$4,979.00
ADT685-01-CP100-PSI-B2-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/2BSP M, w/ RS232$5,110.00
ADT685-01-CP100-PSI-B-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/4BSP M, w/ RS232$5,110.00
ADT685-01-CP100-PSI-B2-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/2BSP M, w/ Data Logging$5,245.00
ADT685-01-CP100-PSI-B2-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/2BSP M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP100-PSI-B-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/4BSP M, w/ Data Logging$5,245.00
ADT685-01-CP100-PSI-B-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/4BSP M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP100-PSI-MDigital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, M20X1.5 M$4,979.00
ADT685-01-CP100-PSI-M-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, M20X1.5 M, w/ RS232$5,110.00
ADT685-01-CP100-PSI-M-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, M20X1.5 M, w/ Data Logging$5,245.00
ADT685-01-CP100-PSI-M-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, M20X1.5 M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP100-PSI-NDigital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/4NPT M$4,979.00
ADT685-01-CP100-PSI-N2Digital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/2NPT M$4,979.00
ADT685-01-CP100-PSI-N2-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/2NPT M, w/ RS232$5,110.00
ADT685-01-CP100-PSI-N-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/4NPT M, w/ RS232$5,110.00
ADT685-01-CP100-PSI-N2-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/2NPT M, w/ Data Logging$5,245.00
ADT685-01-CP100-PSI-N2-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/2NPT M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP100-PSI-N-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/4NPT M, w/ Data Logging$5,245.00
ADT685-01-CP100-PSI-N-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -15 to 100 psi, compound pressure, 1/4NPT M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP10-BAR-BDigital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/4BSP M$4,979.00
ADT685-01-CP10-BAR-B2Digital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/2BSP M$4,979.00
ADT685-01-CP10-BAR-B2-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/2BSP M, w/ RS232$5,110.00
ADT685-01-CP10-BAR-B-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/4BSP M, w/ RS232$5,110.00
ADT685-01-CP10-BAR-B2-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/2BSP M, w/ Data Logging$5,245.00
ADT685-01-CP10-BAR-B2-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/2BSP M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP10-BAR-B-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/4BSP M, w/ Data Logging$5,245.00
ADT685-01-CP10-BAR-B-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/4BSP M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP10-BAR-MDigital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, M20X1.5 M$4,979.00
ADT685-01-CP10-BAR-M-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, M20X1.5 M, w/ RS232$5,110.00
ADT685-01-CP10-BAR-M-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, M20X1.5 M, w/ Data Logging$5,245.00
ADT685-01-CP10-BAR-M-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, M20X1.5 M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP10-BAR-NDigital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/4NPT M$4,979.00
ADT685-01-CP10-BAR-N2Digital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/2NPT M$4,979.00
ADT685-01-CP10-BAR-N2-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/2NPT M, w/ RS232$5,110.00
ADT685-01-CP10-BAR-N-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/4NPT M, w/ RS232$5,110.00
ADT685-01-CP10-BAR-N2-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/2NPT M, w/ Data Logging$5,245.00
ADT685-01-CP10-BAR-N2-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/2NPT M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP10-BAR-N-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/4NPT M, w/ Data Logging$5,245.00
ADT685-01-CP10-BAR-N-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -700 to 700 mbar, compound pressure, 1/4NPT M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP10-PSI-BDigital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/4BSP M$4,979.00
ADT685-01-CP10-PSI-B2Digital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/2BSP M$4,979.00
ADT685-01-CP10-PSI-B2-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/2BSP M, w/ RS232$5,110.00
ADT685-01-CP10-PSI-B-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/4BSP M, w/ RS232$5,110.00
ADT685-01-CP10-PSI-B2-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/2BSP M, w/ Data Logging$5,245.00
ADT685-01-CP10-PSI-B2-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/2BSP M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP10-PSI-B-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/4BSP M, w/ Data Logging$5,245.00
ADT685-01-CP10-PSI-B-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/4BSP M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP10-PSI-MDigital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, M20X1.5 M$4,979.00
ADT685-01-CP10-PSI-M-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, M20X1.5 M, w/ RS232$5,110.00
ADT685-01-CP10-PSI-M-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, M20X1.5 M, w/ Data Logging$5,245.00
ADT685-01-CP10-PSI-M-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, M20X1.5 M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP10-PSI-NDigital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/4NPT M$4,979.00
ADT685-01-CP10-PSI-N2Digital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/2NPT M$4,979.00
ADT685-01-CP10-PSI-N2-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/2NPT M, w/ RS232$5,110.00
ADT685-01-CP10-PSI-N-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/4NPT M, w/ RS232$5,110.00
ADT685-01-CP10-PSI-N2-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/2NPT M, w/ Data Logging$5,245.00
ADT685-01-CP10-PSI-N2-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/2NPT M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP10-PSI-N-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/4NPT M, w/ Data Logging$5,245.00
ADT685-01-CP10-PSI-N-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -10 to 10 psi, compound pressure, 1/4NPT M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP150-BAR-BDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/4BSP M$4,979.00
ADT685-01-CP150-BAR-B2Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/2BSP M$4,979.00
ADT685-01-CP150-BAR-B2-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/2BSP M, w/ RS232$5,110.00
ADT685-01-CP150-BAR-B-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/4BSP M, w/ RS232$5,110.00
ADT685-01-CP150-BAR-B2-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/2BSP M, w/ Data Logging$5,245.00
ADT685-01-CP150-BAR-B2-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/2BSP M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP150-BAR-B-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/4BSP M, w/ Data Logging$5,245.00
ADT685-01-CP150-BAR-B-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/4BSP M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP150-BAR-MDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, M20X1.5 M$4,979.00
ADT685-01-CP150-BAR-M-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, M20X1.5 M, w/ RS232$5,110.00
ADT685-01-CP150-BAR-M-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, M20X1.5 M, w/ Data Logging$5,245.00
ADT685-01-CP150-BAR-M-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, M20X1.5 M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP150-BAR-NDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/4NPT M$4,979.00
ADT685-01-CP150-BAR-N2Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/2NPT M$4,979.00
ADT685-01-CP150-BAR-N2-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/2NPT M, w/ RS232$5,110.00
ADT685-01-CP150-BAR-N-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/4NPT M, w/ RS232$5,110.00
ADT685-01-CP150-BAR-N2-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/2NPT M, w/ Data Logging$5,245.00
ADT685-01-CP150-BAR-N2-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/2NPT M, w/ Data Logging and w/ RS232$5,379.00
ADT685-01-CP150-BAR-N-DLDigital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/4NPT M, w/ Data Logging$5,245.00
ADT685-01-CP150-BAR-N-DL-232Digital Pressure Test Gauge, ADT685, 0.01%FS, -1 to 10 bar, compound pressure, 1/4NPT M, w/ Data Logging and w/ RS232$5,379.00