The Wahl DP Series Differential Pressure Transducers / Transmitters are extremely reliable, small and lightweight piezoresistive pressure sensors in a compact, rugged, all 304 stainless steel housing and sensor, rated at IP67.
Appropriate for harsh environments, outdoor monitoring or in applications where dust and particulate matter may exist, they utilize silicon sensors resistant to shock, vibration, EMI/RFI and wide temperature variations.
Principle of OperationMonnit Differential Pressure Sensor measures the pressure difference between two ports. When viewing the sensor from the top, the right inlet port is the positive or high side pressure input. When the pressure on this port is greater than the left port the sensor produces a positive pressure reading. When the pressure is greater on the left port the sensor produces a negative pressure reading.Example Interfacing
Features of Monnit ALTA Sensors
*Actual range may vary depending on environment. **Battery life is determined by sensor reporting frequency and other variables. Other power options are also available. |



ALTA Commercial AA Wireless Differential Pressure SensorTechnical Specifications
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| Supply Voltage | 2.0-3.8 VDC (3.0-3.8 VDC using power supply) * |
| Current Consumption | 0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (MCU idle), 2.5 mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio TX mode) |
| Operating temperature range (board circuitry and batteries) | -18°C to 55°C (0°F to 130°F) using alkaline -40°C to 85°C (-40°F to 185°F) using lithium ** |
| Lead Tubing Length | 3 ft. (91.5 cm.) DW-0026-02 Tubing |
| Pressure Range | -500 Pa to 500 Pa |
| Allowable overpressure | 100 kPa |
| Accuracy | 3% of reading ± 0.1 Pa |
| Temperature Measurement Range | -40°C to 85°C (-40°F to +185°F) |
| Temperature Accuracy | ± 2°C (-10°C to +60°C) ± 3°C (-40°C to +85°C) |
| Datalogging | Up to 512 sensor messages |
| Wireless Range | 1,200+ ft non-line-of-sight |
| Security | Encrypt-RF ® (256-bit key exchange and AES-128 CTR) |
| Weight | 3.7 ounces |
| Certifications | 900 MHz product; FCC ID: ZTL-G2SC1 and IC: 9794A-G2SC1. 868 and 433 MHz product tested and found to comply with: EN 300 220-2 V3.1.1 (2017-02), EN 300 220-2 V3.1.1 (2017-02) and EN 60950 |
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* Hardware cannot withstand negative voltage. Please take care when connecting a power device. ** At temperatures above 100°C, it is possible for the board circuitry to lose programmed memory. |
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ALTA Industrial Wireless Different Pressure SensorTechnical Specifications
|
|
| Supply Voltage | 2.0-3.8 VDC (3.0-3.8 VDC using power supply) * |
| Current Consumption | 0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (MCU idle), 2.5 mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio TX mode) |
| Operating temperature range (board circuitry and battery) | -40°C to +85°C (-40°F to +185°F) ** |
| Pressure Range | -500 to 500 Pa |
| Lead Tubing Length | 3 ft. (91.5 cm.) DW-0026-02 Tubing |
| Allowable Overpressure | 100 kPa |
| Accuracy | 3% of reading ± 0.1 Pa |
| Temperature Measurement Range | -40°C to 85°C (-40°F to +185°F) |
| Temperature Accuracy | ± 2°C (-10°C to +60°C) ± 3°C (-40°C to +85°C) |
| Datalogging | Up to 512 sensor messages |
| Wireless Range | 1,200+ ft non-line-of-sight |
| Security | Encrypt-RF ® (256-bit key exchange and AES-128 CTR) |
| Weight | 4.7 ounces |
| Certifications | 900 MHz product; FCC ID: ZTL-G2SC1 and IC: 9794A-G2SC1. 868 and 433 MHz product tested and found to comply with: EN 300 220-2 V3.1.1 (2017-02), EN 300 220-2 V3.1.1 (2017-02) and EN 60950 |
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* Hardware cannot withstand negative voltage. Please take care when connecting a power device. ** At temperatures above 100°C, it is possible for the board circuitry to lose programmed memory |
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