DHT Series
HIGH-TEMP DUAL-ELEMENT TRANSDUCERs
Specifications
| DHT-400 | DHT-410 | |
| Frequency | 5 MHz (Nominal) | 7.5 MHz (Nominal) |
| Delay Roof Angle | 5 Degree (10 degree included) | 5 Degree (10 degree included) |
| Connector Type | MD #10-32 (2x) or MCX (2x) | MD #10-32 (2x) or MCX (2x) |
| Contact Diameter | 0.440″ (11.2 mm) | 0.283″ (7.2mm) |
| Min. and Max Thickness (Steel) | Min.: 0.040″ (1.0 mm), Max: 10″ (254 mm) | Min: 0.028″ (0.7 mm), Max: 4″ (102 mm) |
| Continuous Use Temperature | 400°F (204°C) | 200°F (93°C) |
| Maximum Contact Temperature | 932°F (500°C) Intermittent | 300°F (149°C) Intermittent |
| Duty Cycle | 50% at 10 Seconds (max recommended) | 50% at 10 seconds (max recommended) |
| Cable Options | 5 ft. (1.52m) standard & armored cable | 5 ft. (1.52m) standard & armored cable |
| Cable Connector Options | Lemo-00, Olympus- & Krautkramer-style gauge | Lemo-00, Olympus- & Krautkramer-style gauge |
| Compatible Instruments | 38DL PLUS, 37DL PLUS, 36DL PLUS, DMS GO, All Flaw Detectors | 38DL PLUS, 37DL PLUS, 36DL PLUS, DMS GO, All Flaw Detectors |
| DHT-400 Case | Delivered in hard-shell case for field use | Delivered in hard-shell case for field use |
Part Numbers
| Transducer | Kits | |||||
|---|---|---|---|---|---|---|
| Connector Type | DHT-400 | DHT-410 | Lemo-00 Connector (Standard) | Olympus Probe Recognition Connector (Standard | BNC connector (Standard) | Lemo-00 Connector (Armored) |
| MD Connector | 00-012543 | 00-013256 | 01-030180 | 01-030182 | 01-013870 | 01-013872 |
| MCX Connector | 00-030003 | 00-013365 | 01-030181 | 01-030183 | 01-013871 | 01-013873 |
| Standard Cable Options (5ft) | Armored Cable Options (5ft) | ||||||
|---|---|---|---|---|---|---|---|
| Lemo-00 Connector | BNC Connector | Olympus Probe Recognition Connector – DHT-400 | Olympus Probe Recognition Connector – DHT-410 | Lemo-00 Connector | Olympus Probe Recognition Connector – DHT-400 | Olympus Probe Recognition Connector – DHT-410 | |
| MD Connector | 07-010245 | 07-036032 | 07-010246 | 07-010112 | 07-036033 | 07-036034 | 07-010114 |
| MCX Connector | 07-036036 | 07-036038 | 07-036037 | 07-010113 | 07-036039 | 07-036040 | 07-010115 |
Case Dimensions
DHT-400 Series High-Temp Transducers
The SensorScan DHT series of ultrasonic transducers are general-purpose sensors for measuring the remaining wall thickness on rough metal ID and OD surfaces due to corrosion and/or erosion. These transducers can be used intermittently (50% duty cycle) over a wide temperature range from 0 to 932°F (-17.8 to 500°C) and continuously from 0 to 400°F (-17.8 to 204°C) depending on the transducer.
Typical applications include its use with common digital thickness gauges or flaw detectors on boiler/furnace tubes, pipes, tanks, vessels, structures and other safety-critical components at power plants, refineries, mid- and up-stream oil & gas assets, and chemical facilities.
Typical Applications
- Thickness gauging on rough or corroded surfaces
- For applications up to 932°F (500°C)
- Thickness gauging on pitted, curved, and irregular surfaces
Backwall Signal from 1″ Steel Block
DHT-400
DHT-410
RF Waveform Image (Left) and Frequency Spectrum (Right)
Thermal-Cycle Testing
DHT-400: 400°F Heat Up at 932°F
DHT-410: 200°F Heat Up at 300°F
