Dwyer Test Equipment – Erik Prayoga

Dwyer TR-7-UB Safe-T-Ground

Erik Prayoga — Tue, 23 Jun 2026 02:18:51 +0000

Dwyer TR-7-UB Safe-T-Ground is an explosion-proof, hazardous location device with a temperature range of -13 to 104°F (-25 to 40°C). It operates on 105-125 VAC 60 Hz power, consuming 7.75 watts with lights and 1.75 watts without. Its enclosure is made of 356-T6 cast aluminum alloy, with a DPDT electrical rating of 10 amps at 125 VAC 60 Hz. It has a 3/4" NPT conduit connection, measures 6-5/8" W x 10-3/8" H x 5-5/8" D, and is equipped with 7/16" mounting lugs and a terminal strip for wiring. Grounding is facilitated by two supplied grounding studs. A molded polyethylene contactor with berylium copper contact clips and a retractable 16-2 type SO coiled cable (extending up to 16') complete the package.

Specifications

Component	Ground Control
(Instrument-Sensor) Temperature Range	-13 – 104°F/-25 – 40°C
(Instrument-Sensor) Supply Voltage	105-125 VAC
(Instrument-Sensor) Supply Voltage	220-240 VAC
Manufacturer	Dwyer Instruments

Features

Audible alarm and LED status indicators

Explosion-proof housing

Dwyer TR-7-U Safe-T-Ground

Erik Prayoga — Tue, 23 Jun 2026 02:18:50 +0000

Dwyer TR-7-U Safe-T-Ground is an explosion-proof device designed for hazardous locations. It has a temperature range of -13 to 104°F (-25 to 40°C) and operates on 105-125 VAC. The housing is made of durable cast aluminum alloy, and the electrical rating is DPDT, 10 amps, 125 VAC, 60 Hz. It features a 3/4" NPT conduit connection and has dimensions of 6-5/8" W x 10-3/8" H x 5-5/8" D. The installation is facilitated by 7/16" mounting lugs, and the wiring is done via a terminal strip. The device comes with grounding studs and a contactor with a 16-2 type SO coiled cable.

Specifications

Component	Ground Control
(Instrument-Sensor) Temperature Range	-13 – 104°F/-25 – 40°C
(Instrument-Sensor) Supply Voltage	105-125 VAC
(Instrument-Sensor) Supply Voltage	220-240 VAC
Manufacturer	Dwyer Instruments

Features

Audible alarm and LED status indicators

Explosion-proof housing

Dwyer A-SAH-BK Smart Air Hood® Balancing Instrument

Erik Prayoga — Tue, 23 Jun 2026 02:18:50 +0000

Dwyer A-SAH-BK is a Smart Air Hood® Balancing Instrument that measures air flow in supply and exhaust systems. It operates on a 3.6V lithium-ion battery or 4 AA alkaline batteries. With a response time of 1 second and a resolution of 1 CFM, it offers accurate airflow readings. Made of polypropylene, it has a flow range of 40-2000 CFM for supply and 80-2000 CFM for exhaust. It uses Wi-Fi direct low energy wireless technology and is compatible with the SMART Air Hood® application software. It provides accurate readings with an accuracy of ±3% +7 CFM. Units of measurement include CFM, m3/h, and l/s.

Specifications

(Instrument-Sensor) Application	Air
(Instrument-Sensor) Supply Voltage	AA Battery
Component	Balancing Instrument
Manufacturer	Dwyer Instruments

Dwyer A-SAH-14S Smart Air Hood® Balancing Instrument

Erik Prayoga — Tue, 23 Jun 2026 02:18:49 +0000

Dwyer A-SAH-14S Smart Air Hood® Balancing Instrument is a wireless device with a fast 1-second response time and a resolution of 1 CFM. It operates on a 3.6V lithium-ion battery or (4) AA alkaline batteries and is made of durable polypropylene. With a flow range of 40 to 2000 CFM, it accurately measures air supply and exhaust. Compatible with Wi-Fi direct low energy wireless technology, it requires the SMART Air Hood® application software for use. Accuracy is within ±3% of reading, and various units (CFM, m3/h, l/s) are supported.

Specifications

(Instrument-Sensor) Application	Air
(Instrument-Sensor) Supply Voltage	AA Battery
Component	Balancing Instrument
Manufacturer	Dwyer Instruments

Dwyer TR-7-UXB Safe-T-Ground

Erik Prayoga — Tue, 23 Jun 2026 02:18:48 +0000

Dwyer TR-7-UXB Safe-T-Ground is a compact, explosion-proof device designed for hazardous locations. It features an electrical rating of DPDT, 10 amps, 125 VAC, 60 Hz contact rating, and is made of durable 356-T6 cast aluminum alloy (copper free) housing. The temperature range is -13 to 104°F (-25 to 40°C) and it requires a power supply of 105-125 VAC 60 Hz with 7.75 watts (with light) or 1.75 watts (without lights). It also offers an optional power supply of 220-240 VAC, 50/60 Hz. The dimensions are 6-5/8" W x 10-3/8" H x 5-5/8" D and it has a 3/4" NPT conduit connection. The installation is easy with 7/16" mounting lugs and an integrally cast terminal strip for wiring. The Safe-T-Ground comes with 2 grounding studs and a molded polyethylene contactor (grounding clamp) with berylium copper contact clips. It also includes a 16-2 type SO coiled cable that retracts to 3' and extends to 16'.

Specifications

Component	Ground Control
(Instrument-Sensor) Temperature Range	-13 – 104°F/-25 – 40°C
(Instrument-Sensor) Supply Voltage	105-125 VAC
(Instrument-Sensor) Supply Voltage	220-240 VAC
Manufacturer	Dwyer Instruments

Features

Audible alarm and LED status indicators

Explosion-proof housing

Dwyer TR-7-B Safe-T-Ground

Erik Prayoga — Tue, 23 Jun 2026 02:18:48 +0000

Dwyer TR-7-B Safe-T-Ground is an explosion-proof product designed for hazardous locations. It has a temperature range of -13 to 104°F (-25 to 40°C) and operates at a power requirement of 105-125 VAC. The 356-T6 cast aluminum alloy housing and 3/4" NPT conduit connection provide durability. The electrical rating is DPDT, 10 amps, 125 VAC, 60 Hz. Installation is easy with 7/16" mounting lugs and a terminal strip for wiring. The product also includes grounding studs and a contactor with a 16-2 type SO coiled cable.

Specifications

Component	Ground Control
(Instrument-Sensor) Temperature Range	-13 – 104°F/-25 – 40°C
(Instrument-Sensor) Supply Voltage	105-125 VAC
(Instrument-Sensor) Supply Voltage	220-240 VAC
Manufacturer	Dwyer Instruments

Features

Audible alarm and LED status indicators

Explosion-proof housing

Dwyer TR-7-XB Safe-T-Ground

Erik Prayoga — Tue, 23 Jun 2026 02:18:46 +0000

Dwyer TR-7-XB Safe-T-Ground is designed for hazardous locations. It has a temperature range of -13 to 104°F (-25 to 40°C) and can operate on 105-125 VAC, 60 Hz power. The explosion-proof enclosure is made of 356-T6 cast aluminum alloy. It has a DPDT electrical rating of 10 amps, 125 VAC, 60 Hz. It has a 3/4" NPT conduit connection and dimensions of 6-5/8" W x 10-3/8" H x 5-5/8" D. It requires a 7/16" mounting lugs installation and has a terminal strip wiring. It comes with 2 grounding studs. The contactor (grounding clamp) is made of molded polyethylene with berylium copper contact clips. The included 16-2 type SO coiled cable can retract to 3' and extend to 16'. Optional 220-240 VAC, 50/60 Hz power is also available.

Specifications

Component	Ground Control
(Instrument-Sensor) Temperature Range	-13 – 104°F/-25 – 40°C
(Instrument-Sensor) Supply Voltage	105-125 VAC
(Instrument-Sensor) Supply Voltage	220-240 VAC
Manufacturer	Dwyer Instruments

Features

Audible alarm and LED status indicators

Explosion-proof housing

Dwyer A-SAH-24S Smart Air Hood® Balancing Instrument

Erik Prayoga — Tue, 23 Jun 2026 02:18:46 +0000

Dwyer A-SAH-24S is a Smart Air Hood® Balancing Instrument designed for air flow measurement. It operates on a 3.6V NCR18650B MH12210 lithium-ion battery (included) or (4) 1.5V AA alkaline batteries (not included). With a quick 1-second response time and 1 CFM resolution, it can accurately measure air flow ranging from 40 to 2000 CFM (68 to 3398 m3/h) for supply and 80 to 2000 CFM (136 to 3398 m3/h) for exhaust. It uses Wi-Fi direct low energy wireless technology and supports the SMART Air Hood® application software, available only with the factory supplied test instrument. Made of polypropylene material, it ensures durability. The accuracy is >40 CFM, with a ±3% reading ±7 CFM (11.9 m3/hr) (3.3 l/s) accuracy. Operating in CFM, m3/h, and l/s units, it is an efficient and reliable tool for air flow measurement in air systems.

Specifications

(Instrument-Sensor) Application	Air
(Instrument-Sensor) Supply Voltage	AA Battery
Component	Balancing Instrument
Manufacturer	Dwyer Instruments

Dwyer DL71 Differential pressure data logger

Erik Prayoga — Tue, 23 Jun 2026 02:18:45 +0000

Differential pressure data logger, range ±1" w.c. (2.5 mbar).

Specifications

Component	Data Logger
Manufacturer	Dwyer Instruments

Features

Monitor and Record low differential pressures and temperature with the Model DL7 Differential Pressure Data Logger

Unit includes an on-board thermistor for ambient temperature measurement

Sampling rates are user selectable from 0.04 s to 8 hrs with First-in first-out or Fill-then-stop sampling options

Loggers can store up to 21,500 readings and operate totally independently from any external power supply with built-in lithium battery

Use Model DL200 Windows® software (sold separately) to quickly program the logger or upload data to a computer

The Series DL7 logger is ideal for monitoring air duct velocity, testing and balancing HVAC systems, or verifying room pressure.

Dwyer DL75 Differential pressure data logger

Erik Prayoga — Tue, 23 Jun 2026 02:18:45 +0000

Differential pressure data logger, range ±5" w.c. (12.4 mbar).

Specifications

Component	Data Logger
Manufacturer	Dwyer Instruments

Features

Monitor and Record low differential pressures and temperature with the Model DL7 Differential Pressure Data Logger

Unit includes an on-board thermistor for ambient temperature measurement

Sampling rates are user selectable from 0.04 s to 8 hrs with First-in first-out or Fill-then-stop sampling options

Loggers can store up to 21,500 readings and operate totally independently from any external power supply with built-in lithium battery

Use Model DL200 Windows® software (sold separately) to quickly program the logger or upload data to a computer

The Series DL7 logger is ideal for monitoring air duct velocity, testing and balancing HVAC systems, or verifying room pressure.