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Keanley KL-3500 Data Logger

Updated:2025-03-13

Brand: Keanley
Model: KL-3500
Description: The KL-3500 is specifically designed for SDI-12 protocol and DDI mode sensors, as well as RS485, RS232, analog, and pulse sensors. The data logger features 12 connection ports (6 sensor ports, 2 power
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Product Details

Product Description for Keanley KL-3500 Data Logger:：

User Manual

The KL-3500 is specifically designed for SDI-12 protocol and DDI mode sensors, as well as RS485, RS232, analog, and pulse sensors. The data logger features 12 connection ports (6 sensor ports, 2 powered 485 ports, 2 powered 232 ports, 1 barometric pressure/temperature port, and 1 Beidou data port). Please refer to the port descriptions in the software interface for details. It includes one 2P 3.81mm terminal block power supply port, one TYPE-C port (for both power and communication), one power button, and five status indicator lights (LED1 for Beidou status, LED2 for 4G status, LED3 for operational status, LED4 for Bluetooth status, LED5 for charging status). There are two antenna connectors (for 4G communication and Beidou). The upper section houses a battery compartment for 6 AA Ni-MH or alkaline batteries.

Port Indicator Description

Labeling Diagram

Device Connection Diagram

Connection Diagram (A) Placeholder

Connection Diagram (B) Placeholder

Product Specifications

Sensor Logging Interval	5 minutes to 12 hours (average or cumulative value of 1-minute sensor readings)
Sensor Reporting Interval	Configurable interval for uploading data to the cloud
Timing	Automatic and on-demand synchronization; GPS, 4G communication data
Computer Communication	Standard USB cable, USB-A to Type-C
Internet Data Download	SSL/TLS encryption
4G Communication	4G Specifications: LTE Cat1 full-network support. Includes a built-in patch card while reserving a SIM card slot. IPEX Gen1 antenna connector. Supports 4G rod/magnetic mount antennas. Shipped with a built-in patch antenna according to requirements.
Mobile Communication	Bluetooth 5.2, supports Bluetooth Low Energy protocol
BeiDou/GPS Communication	Type: Supports single-system positioning for BDS/GPS/QZSS/GLONASS satellite navigation systems, as well as multi-system combined positioning in any combination, enabling precise navigation and timing. Update: Daily automatic and manual on-demand. Accuracy: ±2.5 meters under clear sky view. Time to First Fix: <60s. Low Power Consumption: 25mA@3.3V during continuous operation.
Dimensions	154.6mm (L) × 109mm (W) × 45mm (H)
Enclosure Material	Impact-resistant sheet metal alloy enclosure
Chassis Power Port	1 (2P 3.81mm connector)
Chassis Interface	3.5mm 3-pole headphone jack / 4P socket with 3.81mm pitch
Sensor Input Port	SDI-12 sensor, 1-5V analog input, digital switch input, RS-232, RS-485.
Sensor Port Type	3.5mm stereo plug connector / 4P plug with power for RS-232 and RS-485 terminals
485 Input Port	2 (4P 3.81mm connector with power supply)
232 Input Port	2 (4P 3.81mm connector with power supply)
Memory Type	Non-volatile flash memory; retains all data after power loss
Data Storage	256M (>132,096 records, depending on configuration)
Battery Capacity	6 AA rechargeable Ni-MH or alkaline batteries
Battery Life	Alkaline: 3-12 months, depending on configuration / Ni-MH: Over 3 years via USB charging
Operating Temperature Range	-40°C to 60°C