HONDEX PS-7/PS-7A ULTRASONIC DEPTH SOUNDER - PORTABLE WATER-DEPTH MEASUREMENT SYSTEM
PRODUCT OVERVIEW
The Hondex PS-7 and contemporary PS-7A are compact, battery-powered ultrasonic depth-measurement instruments serving boat fishing, diving, civil surveying, and marine exploration applications. The pocket-sized form factor (190g) enables single-handed operation across diverse water environments. Simple operation (sensor activation followed by brief switch engagement) requires minimal training. The 50m waterproof rating (IPX8) enables confident submerged measurement and wet-hand operation. Integrated LCD backlight ensures readability across low-light diving and nighttime environments.
KEY SPECIFICATIONS
| Item |
Specification |
| Model |
PS-7 / PS-7A |
| Frequency |
200kHz |
| Directional Angle |
24° |
| Measurement Range |
0.6m–80m (bottom composition and environmental variables apply) |
| Display |
7-segment LCD (LED backlight) |
| Waterproof Rating |
50m (IPX8 equivalent) |
| Power Source |
DC 9V (006P alkaline battery ×1) |
| Battery Life |
~500+ measurements |
| Dimensions |
42mm diameter × 198mm length |
| Weight |
~190g (including battery) |
KEY FEATURES
- Ultra-Compact Portability: 190g weight and pocket-sized form enable effortless field deployment
- Integrated Sensor: Built-in transducer eliminates accessory requirements (standard PS-7A configuration)
- Simple Operation: Minimal-procedure activation (sensor positioning + brief switch engagement) enables intuitive use
- 50m Waterproof Rating: IPX8 certification enables submerged measurement and wet-hand operation
- Extended Range: 0.6m–80m measurement capability addresses diverse water-depth applications
- LED-Backlit Display: 7-segment LCD ensures readability across low-light and nighttime environments
- Extended Battery Life: 500+ measurement capability supports extended field sessions
MODEL VARIANTS
PS-7A (Standard Integrated):
- Built-in transducer at unit tip
- Ideal for direct water-surface measurement from boat railings
- Optimized for diver-hand operation at depth
- Compact form factor without cable encumbrance
PS-7A FL (Float Sensor Configuration):
- 10-meter extension cable enabling remote sensor deployment
- Float-equipped sensor capsule remains water-surface-tethered
- Optimal for elevated platforms (dock, bridge, high embankment)
- Enables continuous measurement during vessel transit
APPLICATIONS
- Boat Fishing: Real-time depth determination for fish-location optimization
- Diving Operations: Underwater depth assessment for dive-site characterization and underwater topography mapping
- Civil Engineering Survey: Rapid depth measurement for construction planning and site assessment
- Marine Research: Water-depth documentation for oceanographic and environmental studies
- Infrastructure Inspection: Bridge-approach and dock-vicinity depth assessment
- Underwater Archaeology: Depth profiling for submerged-site characterization
OPERATIONAL CHARACTERISTICS
- Rapid Measurement Cycles: Brief sensor activation enables quick successive depth assessments
- Directional Sensitivity: 24° beam angle provides focused bottom detection
- Backlit Display: Visible readability across daylight and low-light environments
- Temperature Range: Standard operating temperature -10°C to +50°C (battery dependent)
- Environmental Compensation: Bottom-composition variation affects maximum-range performance
PERFORMANCE CONSIDERATIONS
- Bottom-Composition Sensitivity: Soft sediment, vegetation, and thermocline layers affect measurement accuracy
- Beam Angle: 24° directional cone means significant slant measurement at extreme angles
- Range Limitation: 80m maximum represents practical limit (diminishing accuracy at extreme depths)
- Battery Management: Alkaline 006P battery supports consistent operation across 500+ measurement cycles
LIMITATIONS & REALISTIC EXPECTATIONS
- Environmental Variables: Water composition, turbidity, and temperature stratification affect measurement reliability
- Directional Beam: 24° cone requires careful sensor orientation for accurate vertical-depth assessment
- Battery Type: 006P alkaline cells require sourcing (not universal availability in all regions)
- Depth-Range Specificity: Extreme-depth measurements (>60m) experience increasing uncertainty
- Accuracy Tolerance: ±5% accuracy standard across measurement range
RECOMMENDED USERS
Professional fishing guides and boat operators, recreational anglers optimizing fish-location strategies, diving-operation specialists, civil engineers conducting rapid site assessments, marine surveyors, environmental researchers, archaeological diving teams, water-infrastructure inspectors.
MANUFACTURER HERITAGE
Hondex represents 50+ years of Japanese marine-electronics innovation, establishing depth-sounder leadership across recreational and professional marine applications. The PS-7/PS-7A reflects professional understanding that compact, reliable depth measurement directly enables effective marine operations—providing portable alternatives to elaborate professional surveying infrastructure while maintaining measurement integrity across diverse water environments and diving applications.