JH640-420

Long Range Surveillance Thermal Imager

The JH640-420 thermal security camera is equipped with a high-end 640×512 MWIR cooled sensor and a 21–420mm continuous zoom lens, allowing for clear identification of targets at long distances. It can be used independently for long-range surveillance or integrated into border or coastal EO/IR systems, making it ideal for extended monitoring applications.

Technical Specifications

Detector
Detector	Cooled FPA MCT
Resolution	640×512, 15μm
Spectral Band	3.7–4.8μm
NETD	18mk@25°C
Cooling	Stirling Cooler
Cool Down Time	8min @ 25°C
Lens
Focal Length	21–420mm Continuous Zoom
F Number	4
FOV	1.31° (H) × 1.05° (V) – 25.19° (H) × 20.96° (V)
Auto Focus	Yes
Image Presentation
Video Output	PAL
Frame Frequency	50Hz (100Hz available on request)
Digital Video	LVDS
Brightness & Contrast	Auto / Manual
Calibration	Manual / Background Calibration
Polarity	BH / WH
E-Zoom	×2, ×4
Reticle Display	ON / OFF
Reticle Position	Adjustable
Image Enhancement	Yes
Image Flip	Vertical / Horizontal
Communication Control	RS422
Power Specification
Power Supply	DC24~36V (with polarity protection)
Power Consumption	≤10W @ 25°C
Environmental Specification
Operating Temperature	-32°C ~ +60°C
Storage Temperature	-40°C ~ +70°C
Vibration Test	GJB150.16-86 / MIL-STD-810F-514.5
Shock Test	GJB 150.18-96 / MIL-STD-810F-516.4
High Temperature Test	GJB150.3-86 / MIL-STD-810F-501.4
Low Temperature Test	GJB150.4-86 / MIL-STD-810F-502.4
Physical Specification
Weight	≤3kg
Dimensions	304mm × 134mm × 132mm
Color	Oxide Black

 

 

Polyvinyl Alcohol(PVA)

PVA has good water solubility, it has high glue rate and viscosity.

Polyvinyl Alcohol(PVA),Polyanionic Cellulose -HV,Polyanionic Cellulose -LV,Sodium Carboxymethyl Cellulose-HV

Santo Chemical Limited , https://www.santchem.com