Easy method to check polarity
Full one year warranty High output
Acceleration noise canceling
configuration
Designed For Easy Mounting
The MP-25 is a high output, pressure sensitive detector for use in swamps, rivers, bans and transition zones.
The MP-25 is transformer-coupled and has 8 piezoelectric crystals connected in an acceleration-canceling arrangement with each crystal operating in the high sensitivity bender mode. The crystals and transformer are permanently molded in a durable polyurethane case. This sealed unit has a thermoplastic resin outer case with easy access ports for polarity testing. The Sidewinder version does not have the outer case.
The MP-25 Sidewinder version is designed for easy mounting to bay cable and reduction of leader cable stress. Its tapered design positions the leader flush with the cable thereby greatly reducing the friction in this area as the hydrophone travels through the squirter.
Anchor slots have been provided for tie wrapping the hydrophone to the bay cable thus facilitating the process of taping the unit to the cable.
MP-25-250 MP-25-350 MP-25-656
Natural Frequency } 15 : * 10 Hz
Voltage Sensitivity } 1.5 dB : 14 Volts/Bar (MP-25-250), 10 Volts/Bar (MP-25-350), 8 Volts/Bar (MP-25-656)
Impedance : 250 Ohms
DC Resistance } 10% : 160 Ohms
Operating Temperature Range : 0-35C
Operational Depth : 1-250 ft (.30-76 m) (MP-25-250), 1-350 ft (.30-107 m) (MP-25-350), 1-656 ft (.30-200 m) (MP-25-656)
Dimensions: Without Outer Case With Outer Case Sidewinder
Length: 4.75 in (12.07 cm) (MP-25-250 w/o Outer Case), 5.50 in (13.97 cm) (MP-25-350 w/ Outer Case), 6.60 in (16.76 cm) (MP-25-656 Side Winder)
Diameter: 2.00 in (5.08 cm) (MP-25-250 w/o Outer Case), 2.40 in (6.10 cm) (MP-25-350 w/ Outer Case),2.00 in (5.08 cm) (MP-25-656 Side Winder)
Weight: .52 lbs (236 g)(MP-25-250 w/o Outer Case), .77 lbs (349 g)(MP-25-350 w/ Outer Case), .58 lbs (263 g)(MP-25-656 Side Winder)
Chart for Hydrophone Response Curve Output VS. Frequency: MP-25-250, MP-25-656
Standard Cable Sizes : .275 in (0.7cm, MP-25-250), .310 in (0.79cm, MP-25-350), .400 in (1.02 cm, MP-25-656)
* Other frequencies available