Product Details

Multi-Parameter Panel-Mount Controller for Humidity, Voltage, and Current Monitoring with Relay Output

The Voltage/Current Humidity Controller is a compact, multi-parameter digital monitoring and control instrument that combines high-accuracy humidity sensing with simultaneous voltage and current measurement in a single panel-mounted device — providing industrial facilities, electrical panels, and process environments with a unified monitoring and control solution for three critical environmental and electrical parameters from one display unit. With its potential-free relay output, wide input voltage range, and high-precision sensing specifications, this controller is the versatile, space-efficient solution for applications where humidity, voltage, and current must all be monitored and controlled from a single, cost-effective panel instrument.

Humidity control in industrial and electrical environments is a critical preventive maintenance discipline. Excess moisture inside electrical distribution panels, control cabinets, machine enclosures, and precision instrument housings causes condensation on circuit boards and electrical components, accelerates metal corrosion, degrades insulation resistance, and ultimately leads to electrical faults, equipment failure, and unplanned downtime. The humidity controller monitors relative humidity continuously and activates a relay output to drive a panel heater, dehumidifier, or ventilation fan when humidity rises above the set threshold — maintaining the interior environment within the safe operating range before condensation can cause damage.

The controller's humidity measurement specification — 10 to 96% RH with ±1% accuracy — provides both the broad measurement range needed to monitor from dry desert-climate installations to high-humidity tropical environments, and the measurement precision needed to make accurate set-point decisions that keep the controlled environment reliably within specification. At ±1% accuracy, the humidity reading is precise enough to operate meaningful control hysteresis without unnecessary relay chatter, while ensuring that the setpoint is maintained within a tight band that genuinely protects the equipment.

Simultaneous voltage and current monitoring expands the controller's utility beyond humidity management into the domain of electrical system monitoring. The integrated current measurement via an isolated CT (current transformer) allows the controller to track load current without direct insertion into the power circuit — a safe, non-invasive measurement method that is practical for retrofitting into existing panel installations without rewiring. Voltage monitoring across the wide 24–240 V input range covers both 24 V DC control circuit monitoring and 230 V AC mains circuit monitoring from the same instrument, making the controller applicable across the full spectrum of industrial electrical panel voltages.

The potential-free (volt-free) relay output rated at 5 A provides maximum flexibility in the controller's application, as the relay contacts are independent of the supply voltage and can be used to switch any load circuit at any voltage within the relay's rating — connecting the controller to panel heaters, warning indicators, BMS inputs, ventilation actuators, or any other control device appropriate to the installation. The compact panel-mount format with digital display enables installation in standard DIN rail or panel cutout positions without consuming disproportionate panel space.

For industrial panel builders, electrical engineers, and facilities maintenance teams who need a reliable, multi-parameter monitoring and control instrument for humidity management and electrical monitoring in a single compact device, the Voltage/Current Humidity Controller delivers the sensing accuracy, relay control capability, and installation flexibility that industrial panel environment protection requires.

Key Features

• High-accuracy humidity sensing: 10–96% RH range at ±1% measurement accuracy
• Isolated CT current measurement for safe, non-invasive panel current monitoring
• Simultaneous voltage monitoring across wide 24–240 V AC/DC input range
• Potential-free 5 A relay output for panel heaters, ventilation, or BMS integration
• Compact panel-mount digital display for DIN rail or panel cutout installation